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freebsd/contrib/gcc/calls.c

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Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Convert function calls to rtl insns, for GNU C compiler.
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998
1999, 2000, 2001 Free Software Foundation, Inc.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
This file is part of GCC.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
You should have received a copy of the GNU General Public License
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#include "config.h"
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#include "system.h"
#include "rtl.h"
#include "tree.h"
#include "flags.h"
#include "expr.h"
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#include "libfuncs.h"
#include "function.h"
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#include "regs.h"
#include "toplev.h"
#include "output.h"
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#include "tm_p.h"
#include "timevar.h"
#include "sbitmap.h"
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#if !defined FUNCTION_OK_FOR_SIBCALL
#define FUNCTION_OK_FOR_SIBCALL(DECL) 1
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Decide whether a function's arguments should be processed
from first to last or from last to first.
They should if the stack and args grow in opposite directions, but
only if we have push insns. */
#ifdef PUSH_ROUNDING
#if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#define PUSH_ARGS_REVERSED PUSH_ARGS
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#endif
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifndef PUSH_ARGS_REVERSED
#define PUSH_ARGS_REVERSED 0
#endif
#ifndef STACK_POINTER_OFFSET
#define STACK_POINTER_OFFSET 0
#endif
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Like PREFERRED_STACK_BOUNDARY but in units of bytes, not bits. */
#define STACK_BYTES (PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Data structure and subroutines used within expand_call. */
struct arg_data
{
/* Tree node for this argument. */
tree tree_value;
/* Mode for value; TYPE_MODE unless promoted. */
enum machine_mode mode;
/* Current RTL value for argument, or 0 if it isn't precomputed. */
rtx value;
/* Initially-compute RTL value for argument; only for const functions. */
rtx initial_value;
/* Register to pass this argument in, 0 if passed on stack, or an
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
PARALLEL if the arg is to be copied into multiple non-contiguous
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
registers. */
rtx reg;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Register to pass this argument in when generating tail call sequence.
This is not the same register as for normal calls on machines with
register windows. */
rtx tail_call_reg;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* If REG was promoted from the actual mode of the argument expression,
indicates whether the promotion is sign- or zero-extended. */
int unsignedp;
/* Number of registers to use. 0 means put the whole arg in registers.
Also 0 if not passed in registers. */
int partial;
/* Non-zero if argument must be passed on stack.
Note that some arguments may be passed on the stack
even though pass_on_stack is zero, just because FUNCTION_ARG says so.
pass_on_stack identifies arguments that *cannot* go in registers. */
int pass_on_stack;
/* Offset of this argument from beginning of stack-args. */
struct args_size offset;
/* Similar, but offset to the start of the stack slot. Different from
OFFSET if this arg pads downward. */
struct args_size slot_offset;
/* Size of this argument on the stack, rounded up for any padding it gets,
parts of the argument passed in registers do not count.
If REG_PARM_STACK_SPACE is defined, then register parms
are counted here as well. */
struct args_size size;
/* Location on the stack at which parameter should be stored. The store
has already been done if STACK == VALUE. */
rtx stack;
/* Location on the stack of the start of this argument slot. This can
differ from STACK if this arg pads downward. This location is known
to be aligned to FUNCTION_ARG_BOUNDARY. */
rtx stack_slot;
/* Place that this stack area has been saved, if needed. */
rtx save_area;
/* If an argument's alignment does not permit direct copying into registers,
copy in smaller-sized pieces into pseudos. These are stored in a
block pointed to by this field. The next field says how many
word-sized pseudos we made. */
rtx *aligned_regs;
int n_aligned_regs;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* The amount that the stack pointer needs to be adjusted to
force alignment for the next argument. */
struct args_size alignment_pad;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
};
/* A vector of one char per byte of stack space. A byte if non-zero if
the corresponding stack location has been used.
This vector is used to prevent a function call within an argument from
clobbering any stack already set up. */
static char *stack_usage_map;
/* Size of STACK_USAGE_MAP. */
static int highest_outgoing_arg_in_use;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* A bitmap of virtual-incoming stack space. Bit is set if the corresponding
stack location's tail call argument has been already stored into the stack.
This bitmap is used to prevent sibling call optimization if function tries
to use parent's incoming argument slots when they have been already
overwritten with tail call arguments. */
static sbitmap stored_args_map;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* stack_arg_under_construction is nonzero when an argument may be
initialized with a constructor call (including a C function that
returns a BLKmode struct) and expand_call must take special action
to make sure the object being constructed does not overlap the
argument list for the constructor call. */
int stack_arg_under_construction;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static int calls_function PARAMS ((tree, int));
static int calls_function_1 PARAMS ((tree, int));
/* Nonzero if this is a call to a `const' function. */
#define ECF_CONST 1
/* Nonzero if this is a call to a `volatile' function. */
#define ECF_NORETURN 2
/* Nonzero if this is a call to malloc or a related function. */
#define ECF_MALLOC 4
/* Nonzero if it is plausible that this is a call to alloca. */
#define ECF_MAY_BE_ALLOCA 8
/* Nonzero if this is a call to a function that won't throw an exception. */
#define ECF_NOTHROW 16
/* Nonzero if this is a call to setjmp or a related function. */
#define ECF_RETURNS_TWICE 32
/* Nonzero if this is a call to `longjmp'. */
#define ECF_LONGJMP 64
/* Nonzero if this is a syscall that makes a new process in the image of
the current one. */
#define ECF_FORK_OR_EXEC 128
#define ECF_SIBCALL 256
/* Nonzero if this is a call to "pure" function (like const function,
but may read memory. */
#define ECF_PURE 512
/* Nonzero if this is a call to a function that returns with the stack
pointer depressed. */
#define ECF_SP_DEPRESSED 1024
/* Nonzero if this call is known to always return. */
#define ECF_ALWAYS_RETURN 2048
/* Create libcall block around the call. */
#define ECF_LIBCALL_BLOCK 4096
static void emit_call_1 PARAMS ((rtx, tree, tree, HOST_WIDE_INT,
HOST_WIDE_INT, HOST_WIDE_INT, rtx,
rtx, int, rtx, int));
static void precompute_register_parameters PARAMS ((int,
struct arg_data *,
int *));
static int store_one_arg PARAMS ((struct arg_data *, rtx, int, int,
int));
static void store_unaligned_arguments_into_pseudos PARAMS ((struct arg_data *,
int));
static int finalize_must_preallocate PARAMS ((int, int,
struct arg_data *,
struct args_size *));
static void precompute_arguments PARAMS ((int, int,
struct arg_data *));
static int compute_argument_block_size PARAMS ((int,
struct args_size *,
int));
static void initialize_argument_information PARAMS ((int,
struct arg_data *,
struct args_size *,
int, tree, tree,
CUMULATIVE_ARGS *,
int, rtx *, int *,
int *, int *));
static void compute_argument_addresses PARAMS ((struct arg_data *,
rtx, int));
static rtx rtx_for_function_call PARAMS ((tree, tree));
static void load_register_parameters PARAMS ((struct arg_data *,
int, rtx *, int));
static rtx emit_library_call_value_1 PARAMS ((int, rtx, rtx,
enum libcall_type,
enum machine_mode,
int, va_list));
static int special_function_p PARAMS ((tree, int));
static int flags_from_decl_or_type PARAMS ((tree));
static rtx try_to_integrate PARAMS ((tree, tree, rtx,
int, tree, rtx));
static int check_sibcall_argument_overlap_1 PARAMS ((rtx));
static int check_sibcall_argument_overlap PARAMS ((rtx, struct arg_data *));
static int combine_pending_stack_adjustment_and_call
PARAMS ((int, struct args_size *, int));
#ifdef REG_PARM_STACK_SPACE
static rtx save_fixed_argument_area PARAMS ((int, rtx, int *, int *));
static void restore_fixed_argument_area PARAMS ((rtx, rtx, int, int));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* If WHICH is 1, return 1 if EXP contains a call to the built-in function
`alloca'.
If WHICH is 0, return 1 if EXP contains a call to any function.
Actually, we only need return 1 if evaluating EXP would require pushing
arguments on the stack, but that is too difficult to compute, so we just
assume any function call might require the stack. */
static tree calls_function_save_exprs;
static int
calls_function (exp, which)
tree exp;
int which;
{
int val;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
calls_function_save_exprs = 0;
val = calls_function_1 (exp, which);
calls_function_save_exprs = 0;
return val;
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Recursive function to do the work of above function. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static int
calls_function_1 (exp, which)
tree exp;
int which;
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
enum tree_code code = TREE_CODE (exp);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int class = TREE_CODE_CLASS (code);
int length = first_rtl_op (code);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* If this code is language-specific, we don't know what it will do. */
if ((int) code >= NUM_TREE_CODES)
return 1;
switch (code)
{
case CALL_EXPR:
if (which == 0)
return 1;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
else if ((TREE_CODE (TREE_TYPE (TREE_TYPE (TREE_OPERAND (exp, 0))))
== FUNCTION_TYPE)
&& (TYPE_RETURNS_STACK_DEPRESSED
(TREE_TYPE (TREE_TYPE (TREE_OPERAND (exp, 0))))))
return 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else if (TREE_CODE (TREE_OPERAND (exp, 0)) == ADDR_EXPR
&& (TREE_CODE (TREE_OPERAND (TREE_OPERAND (exp, 0), 0))
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
== FUNCTION_DECL)
&& (special_function_p (TREE_OPERAND (TREE_OPERAND (exp, 0), 0),
0)
& ECF_MAY_BE_ALLOCA))
return 1;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case CONSTRUCTOR:
{
tree tem;
for (tem = CONSTRUCTOR_ELTS (exp); tem != 0; tem = TREE_CHAIN (tem))
if (calls_function_1 (TREE_VALUE (tem), which))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
return 1;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
case SAVE_EXPR:
if (SAVE_EXPR_RTL (exp) != 0)
return 0;
if (value_member (exp, calls_function_save_exprs))
return 0;
calls_function_save_exprs = tree_cons (NULL_TREE, exp,
calls_function_save_exprs);
return (TREE_OPERAND (exp, 0) != 0
&& calls_function_1 (TREE_OPERAND (exp, 0), which));
case BLOCK:
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
tree local;
tree subblock;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
for (local = BLOCK_VARS (exp); local; local = TREE_CHAIN (local))
if (DECL_INITIAL (local) != 0
&& calls_function_1 (DECL_INITIAL (local), which))
return 1;
for (subblock = BLOCK_SUBBLOCKS (exp);
subblock;
subblock = TREE_CHAIN (subblock))
if (calls_function_1 (subblock, which))
return 1;
}
return 0;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case TREE_LIST:
for (; exp != 0; exp = TREE_CHAIN (exp))
if (calls_function_1 (TREE_VALUE (exp), which))
return 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
return 0;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
default:
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Only expressions, references, and blocks can contain calls. */
if (! IS_EXPR_CODE_CLASS (class) && class != 'r' && class != 'b')
return 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
for (i = 0; i < length; i++)
if (TREE_OPERAND (exp, i) != 0
&& calls_function_1 (TREE_OPERAND (exp, i), which))
return 1;
return 0;
}
/* Force FUNEXP into a form suitable for the address of a CALL,
and return that as an rtx. Also load the static chain register
if FNDECL is a nested function.
CALL_FUSAGE points to a variable holding the prospective
CALL_INSN_FUNCTION_USAGE information. */
rtx
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
prepare_call_address (funexp, fndecl, call_fusage, reg_parm_seen, sibcallp)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rtx funexp;
tree fndecl;
rtx *call_fusage;
int reg_parm_seen;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int sibcallp;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
rtx static_chain_value = 0;
funexp = protect_from_queue (funexp, 0);
if (fndecl != 0)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Get possible static chain value for nested function in C. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static_chain_value = lookup_static_chain (fndecl);
/* Make a valid memory address and copy constants thru pseudo-regs,
but not for a constant address if -fno-function-cse. */
if (GET_CODE (funexp) != SYMBOL_REF)
/* If we are using registers for parameters, force the
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
function address into a register now. */
funexp = ((SMALL_REGISTER_CLASSES && reg_parm_seen)
? force_not_mem (memory_address (FUNCTION_MODE, funexp))
: memory_address (FUNCTION_MODE, funexp));
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
else if (! sibcallp)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
#ifndef NO_FUNCTION_CSE
if (optimize && ! flag_no_function_cse)
#ifdef NO_RECURSIVE_FUNCTION_CSE
if (fndecl != current_function_decl)
#endif
funexp = force_reg (Pmode, funexp);
#endif
}
if (static_chain_value != 0)
{
emit_move_insn (static_chain_rtx, static_chain_value);
if (GET_CODE (static_chain_rtx) == REG)
use_reg (call_fusage, static_chain_rtx);
}
return funexp;
}
/* Generate instructions to call function FUNEXP,
and optionally pop the results.
The CALL_INSN is the first insn generated.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
FNDECL is the declaration node of the function. This is given to the
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
macro RETURN_POPS_ARGS to determine whether this function pops its own args.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
FUNTYPE is the data type of the function. This is given to the macro
RETURN_POPS_ARGS to determine whether this function pops its own args.
We used to allow an identifier for library functions, but that doesn't
work when the return type is an aggregate type and the calling convention
says that the pointer to this aggregate is to be popped by the callee.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
STACK_SIZE is the number of bytes of arguments on the stack,
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
ROUNDED_STACK_SIZE is that number rounded up to
PREFERRED_STACK_BOUNDARY; zero if the size is variable. This is
both to put into the call insn and to generate explicit popping
code if necessary.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
STRUCT_VALUE_SIZE is the number of bytes wanted in a structure value.
It is zero if this call doesn't want a structure value.
NEXT_ARG_REG is the rtx that results from executing
FUNCTION_ARG (args_so_far, VOIDmode, void_type_node, 1)
just after all the args have had their registers assigned.
This could be whatever you like, but normally it is the first
arg-register beyond those used for args in this call,
or 0 if all the arg-registers are used in this call.
It is passed on to `gen_call' so you can put this info in the call insn.
VALREG is a hard register in which a value is returned,
or 0 if the call does not return a value.
OLD_INHIBIT_DEFER_POP is the value that `inhibit_defer_pop' had before
the args to this call were processed.
We restore `inhibit_defer_pop' to that value.
CALL_FUSAGE is either empty or an EXPR_LIST of USE expressions that
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
denote registers used by the called function. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static void
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
emit_call_1 (funexp, fndecl, funtype, stack_size, rounded_stack_size,
struct_value_size, next_arg_reg, valreg, old_inhibit_defer_pop,
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
call_fusage, ecf_flags)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rtx funexp;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree fndecl ATTRIBUTE_UNUSED;
tree funtype ATTRIBUTE_UNUSED;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
HOST_WIDE_INT stack_size ATTRIBUTE_UNUSED;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
HOST_WIDE_INT rounded_stack_size;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
HOST_WIDE_INT struct_value_size ATTRIBUTE_UNUSED;
rtx next_arg_reg ATTRIBUTE_UNUSED;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rtx valreg;
int old_inhibit_defer_pop;
rtx call_fusage;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int ecf_flags;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
rtx rounded_stack_size_rtx = GEN_INT (rounded_stack_size);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rtx call_insn;
int already_popped = 0;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
HOST_WIDE_INT n_popped = RETURN_POPS_ARGS (fndecl, funtype, stack_size);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#if defined (HAVE_call) && defined (HAVE_call_value)
rtx struct_value_size_rtx;
struct_value_size_rtx = GEN_INT (struct_value_size);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Ensure address is valid. SYMBOL_REF is already valid, so no need,
and we don't want to load it into a register as an optimization,
because prepare_call_address already did it if it should be done. */
if (GET_CODE (funexp) != SYMBOL_REF)
funexp = memory_address (FUNCTION_MODE, funexp);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#if defined (HAVE_sibcall_pop) && defined (HAVE_sibcall_value_pop)
if ((ecf_flags & ECF_SIBCALL)
&& HAVE_sibcall_pop && HAVE_sibcall_value_pop
&& (n_popped > 0 || stack_size == 0))
{
rtx n_pop = GEN_INT (n_popped);
rtx pat;
/* If this subroutine pops its own args, record that in the call insn
if possible, for the sake of frame pointer elimination. */
if (valreg)
pat = GEN_SIBCALL_VALUE_POP (valreg,
gen_rtx_MEM (FUNCTION_MODE, funexp),
rounded_stack_size_rtx, next_arg_reg,
n_pop);
else
pat = GEN_SIBCALL_POP (gen_rtx_MEM (FUNCTION_MODE, funexp),
rounded_stack_size_rtx, next_arg_reg, n_pop);
emit_call_insn (pat);
already_popped = 1;
}
else
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#if defined (HAVE_call_pop) && defined (HAVE_call_value_pop)
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2002-02-01 18:16:02 +00:00
/* If the target has "call" or "call_value" insns, then prefer them
if no arguments are actually popped. If the target does not have
"call" or "call_value" insns, then we must use the popping versions
even if the call has no arguments to pop. */
Enlist the FreeBSD-CURRENT users as testers of GCC 2.95.3 Release Candidate #1
2001-01-03 17:16:04 +00:00
#if defined (HAVE_call) && defined (HAVE_call_value)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (HAVE_call && HAVE_call_value && HAVE_call_pop && HAVE_call_value_pop
&& n_popped > 0 && ! (ecf_flags & ECF_SP_DEPRESSED))
#else
if (HAVE_call_pop && HAVE_call_value_pop)
Enlist the FreeBSD-CURRENT users as testers of GCC 2.95.3 Release Candidate #1
2001-01-03 17:16:04 +00:00
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
rtx n_pop = GEN_INT (n_popped);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rtx pat;
/* If this subroutine pops its own args, record that in the call insn
if possible, for the sake of frame pointer elimination. */
if (valreg)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
pat = GEN_CALL_VALUE_POP (valreg,
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
gen_rtx_MEM (FUNCTION_MODE, funexp),
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
rounded_stack_size_rtx, next_arg_reg, n_pop);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
pat = GEN_CALL_POP (gen_rtx_MEM (FUNCTION_MODE, funexp),
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
rounded_stack_size_rtx, next_arg_reg, n_pop);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
emit_call_insn (pat);
already_popped = 1;
}
else
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#if defined (HAVE_sibcall) && defined (HAVE_sibcall_value)
if ((ecf_flags & ECF_SIBCALL)
&& HAVE_sibcall && HAVE_sibcall_value)
{
if (valreg)
emit_call_insn (GEN_SIBCALL_VALUE (valreg,
gen_rtx_MEM (FUNCTION_MODE, funexp),
rounded_stack_size_rtx,
next_arg_reg, NULL_RTX));
else
emit_call_insn (GEN_SIBCALL (gen_rtx_MEM (FUNCTION_MODE, funexp),
rounded_stack_size_rtx, next_arg_reg,
struct_value_size_rtx));
}
else
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#endif
#if defined (HAVE_call) && defined (HAVE_call_value)
if (HAVE_call && HAVE_call_value)
{
if (valreg)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_call_insn (GEN_CALL_VALUE (valreg,
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
gen_rtx_MEM (FUNCTION_MODE, funexp),
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
rounded_stack_size_rtx, next_arg_reg,
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
NULL_RTX));
else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_call_insn (GEN_CALL (gen_rtx_MEM (FUNCTION_MODE, funexp),
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
rounded_stack_size_rtx, next_arg_reg,
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
struct_value_size_rtx));
}
else
#endif
abort ();
/* Find the CALL insn we just emitted. */
for (call_insn = get_last_insn ();
call_insn && GET_CODE (call_insn) != CALL_INSN;
call_insn = PREV_INSN (call_insn))
;
if (! call_insn)
abort ();
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Mark memory as used for "pure" function call. */
if (ecf_flags & ECF_PURE)
call_fusage
= gen_rtx_EXPR_LIST
(VOIDmode,
gen_rtx_USE (VOIDmode,
gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (VOIDmode))),
call_fusage);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Put the register usage information on the CALL. If there is already
some usage information, put ours at the end. */
if (CALL_INSN_FUNCTION_USAGE (call_insn))
{
rtx link;
for (link = CALL_INSN_FUNCTION_USAGE (call_insn); XEXP (link, 1) != 0;
link = XEXP (link, 1))
;
XEXP (link, 1) = call_fusage;
}
else
CALL_INSN_FUNCTION_USAGE (call_insn) = call_fusage;
/* If this is a const call, then set the insn's unchanging bit. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (ecf_flags & (ECF_CONST | ECF_PURE))
CONST_OR_PURE_CALL_P (call_insn) = 1;
/* If this call can't throw, attach a REG_EH_REGION reg note to that
effect. */
if (ecf_flags & ECF_NOTHROW)
REG_NOTES (call_insn) = gen_rtx_EXPR_LIST (REG_EH_REGION, const0_rtx,
REG_NOTES (call_insn));
if (ecf_flags & ECF_NORETURN)
REG_NOTES (call_insn) = gen_rtx_EXPR_LIST (REG_NORETURN, const0_rtx,
REG_NOTES (call_insn));
if (ecf_flags & ECF_ALWAYS_RETURN)
REG_NOTES (call_insn) = gen_rtx_EXPR_LIST (REG_ALWAYS_RETURN, const0_rtx,
REG_NOTES (call_insn));
if (ecf_flags & ECF_RETURNS_TWICE)
{
REG_NOTES (call_insn) = gen_rtx_EXPR_LIST (REG_SETJMP, const0_rtx,
REG_NOTES (call_insn));
current_function_calls_setjmp = 1;
}
SIBLING_CALL_P (call_insn) = ((ecf_flags & ECF_SIBCALL) != 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Restore this now, so that we do defer pops for this call's args
if the context of the call as a whole permits. */
inhibit_defer_pop = old_inhibit_defer_pop;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (n_popped > 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
if (!already_popped)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
CALL_INSN_FUNCTION_USAGE (call_insn)
= gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_CLOBBER (VOIDmode, stack_pointer_rtx),
CALL_INSN_FUNCTION_USAGE (call_insn));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
rounded_stack_size -= n_popped;
rounded_stack_size_rtx = GEN_INT (rounded_stack_size);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
stack_pointer_delta -= n_popped;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (!ACCUMULATE_OUTGOING_ARGS)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If returning from the subroutine does not automatically pop the args,
we need an instruction to pop them sooner or later.
Perhaps do it now; perhaps just record how much space to pop later.
If returning from the subroutine does pop the args, indicate that the
stack pointer will be changed. */
if (rounded_stack_size != 0)
{
if (ecf_flags & ECF_SP_DEPRESSED)
/* Just pretend we did the pop. */
stack_pointer_delta -= rounded_stack_size;
else if (flag_defer_pop && inhibit_defer_pop == 0
&& ! (ecf_flags & (ECF_CONST | ECF_PURE)))
pending_stack_adjust += rounded_stack_size;
else
adjust_stack (rounded_stack_size_rtx);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* When we accumulate outgoing args, we must avoid any stack manipulations.
Restore the stack pointer to its original value now. Usually
ACCUMULATE_OUTGOING_ARGS targets don't get here, but there are exceptions.
On i386 ACCUMULATE_OUTGOING_ARGS can be enabled on demand, and
popping variants of functions exist as well.
??? We may optimize similar to defer_pop above, but it is
probably not worthwhile.
??? It will be worthwhile to enable combine_stack_adjustments even for
such machines. */
else if (n_popped)
anti_adjust_stack (GEN_INT (n_popped));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Determine if the function identified by NAME and FNDECL is one with
special properties we wish to know about.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
For example, if the function might return more than one time (setjmp), then
set RETURNS_TWICE to a nonzero value.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Similarly set LONGJMP for if the function is in the longjmp family.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Set MALLOC for any of the standard memory allocation functions which
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
allocate from the heap.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Set MAY_BE_ALLOCA for any memory allocation function that might allocate
space from the stack such as alloca. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static int
special_function_p (fndecl, flags)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree fndecl;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int flags;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! (flags & ECF_MALLOC)
&& fndecl && DECL_NAME (fndecl)
&& IDENTIFIER_LENGTH (DECL_NAME (fndecl)) <= 17
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Exclude functions not at the file scope, or not `extern',
since they are not the magic functions we would otherwise
think they are. */
&& DECL_CONTEXT (fndecl) == NULL_TREE && TREE_PUBLIC (fndecl))
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
const char *name = IDENTIFIER_POINTER (DECL_NAME (fndecl));
const char *tname = name;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* We assume that alloca will always be called by name. It
makes no sense to pass it as a pointer-to-function to
anything that does not understand its behavior. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (((IDENTIFIER_LENGTH (DECL_NAME (fndecl)) == 6
&& name[0] == 'a'
&& ! strcmp (name, "alloca"))
|| (IDENTIFIER_LENGTH (DECL_NAME (fndecl)) == 16
&& name[0] == '_'
&& ! strcmp (name, "__builtin_alloca"))))
flags |= ECF_MAY_BE_ALLOCA;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Disregard prefix _, __ or __x. */
if (name[0] == '_')
{
if (name[1] == '_' && name[2] == 'x')
tname += 3;
else if (name[1] == '_')
tname += 2;
else
tname += 1;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (tname[0] == 's')
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if ((tname[1] == 'e'
&& (! strcmp (tname, "setjmp")
|| ! strcmp (tname, "setjmp_syscall")))
|| (tname[1] == 'i'
&& ! strcmp (tname, "sigsetjmp"))
|| (tname[1] == 'a'
&& ! strcmp (tname, "savectx")))
flags |= ECF_RETURNS_TWICE;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (tname[1] == 'i'
&& ! strcmp (tname, "siglongjmp"))
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
flags |= ECF_LONGJMP;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
else if ((tname[0] == 'q' && tname[1] == 's'
&& ! strcmp (tname, "qsetjmp"))
|| (tname[0] == 'v' && tname[1] == 'f'
&& ! strcmp (tname, "vfork")))
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
flags |= ECF_RETURNS_TWICE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
else if (tname[0] == 'l' && tname[1] == 'o'
&& ! strcmp (tname, "longjmp"))
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
flags |= ECF_LONGJMP;
else if ((tname[0] == 'f' && tname[1] == 'o'
&& ! strcmp (tname, "fork"))
/* Linux specific: __clone. check NAME to insist on the
leading underscores, to avoid polluting the ISO / POSIX
namespace. */
|| (name[0] == '_' && name[1] == '_'
&& ! strcmp (tname, "clone"))
|| (tname[0] == 'e' && tname[1] == 'x' && tname[2] == 'e'
&& tname[3] == 'c' && (tname[4] == 'l' || tname[4] == 'v')
&& (tname[5] == '\0'
|| ((tname[5] == 'p' || tname[5] == 'e')
&& tname[6] == '\0'))))
flags |= ECF_FORK_OR_EXEC;
/* Do not add any more malloc-like functions to this list,
instead mark them as malloc functions using the malloc attribute.
Note, realloc is not suitable for attribute malloc since
it may return the same address across multiple calls.
C++ operator new is not suitable because it is not required
to return a unique pointer; indeed, the standard placement new
just returns its argument. */
else if (TYPE_MODE (TREE_TYPE (TREE_TYPE (fndecl))) == Pmode
&& (! strcmp (tname, "malloc")
|| ! strcmp (tname, "calloc")
|| ! strcmp (tname, "strdup")))
flags |= ECF_MALLOC;
}
return flags;
}
/* Return nonzero when tree represent call to longjmp. */
int
setjmp_call_p (fndecl)
tree fndecl;
{
return special_function_p (fndecl, 0) & ECF_RETURNS_TWICE;
}
/* Detect flags (function attributes) from the function decl or type node. */
static int
flags_from_decl_or_type (exp)
tree exp;
{
int flags = 0;
tree type = exp;
/* ??? We can't set IS_MALLOC for function types? */
if (DECL_P (exp))
{
type = TREE_TYPE (exp);
/* The function exp may have the `malloc' attribute. */
if (DECL_P (exp) && DECL_IS_MALLOC (exp))
flags |= ECF_MALLOC;
/* The function exp may have the `pure' attribute. */
if (DECL_P (exp) && DECL_IS_PURE (exp))
flags |= ECF_PURE | ECF_LIBCALL_BLOCK;
if (TREE_NOTHROW (exp))
flags |= ECF_NOTHROW;
}
if (TREE_READONLY (exp) && ! TREE_THIS_VOLATILE (exp))
flags |= ECF_CONST | ECF_LIBCALL_BLOCK;
if (TREE_THIS_VOLATILE (exp))
flags |= ECF_NORETURN;
/* Mark if the function returns with the stack pointer depressed. We
cannot consider it pure or constant in that case. */
if (TREE_CODE (type) == FUNCTION_TYPE && TYPE_RETURNS_STACK_DEPRESSED (type))
{
flags |= ECF_SP_DEPRESSED;
flags &= ~(ECF_PURE | ECF_CONST | ECF_LIBCALL_BLOCK);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return flags;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Precompute all register parameters as described by ARGS, storing values
into fields within the ARGS array.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
NUM_ACTUALS indicates the total number elements in the ARGS array.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Set REG_PARM_SEEN if we encounter a register parameter. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
precompute_register_parameters (num_actuals, args, reg_parm_seen)
int num_actuals;
struct arg_data *args;
int *reg_parm_seen;
{
int i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
*reg_parm_seen = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
for (i = 0; i < num_actuals; i++)
if (args[i].reg != 0 && ! args[i].pass_on_stack)
{
*reg_parm_seen = 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (args[i].value == 0)
{
push_temp_slots ();
args[i].value = expand_expr (args[i].tree_value, NULL_RTX,
VOIDmode, 0);
preserve_temp_slots (args[i].value);
pop_temp_slots ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* ANSI doesn't require a sequence point here,
but PCC has one, so this will avoid some problems. */
emit_queue ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If we are to promote the function arg to a wider mode,
do it now. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (args[i].mode != TYPE_MODE (TREE_TYPE (args[i].tree_value)))
args[i].value
= convert_modes (args[i].mode,
TYPE_MODE (TREE_TYPE (args[i].tree_value)),
args[i].value, args[i].unsignedp);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If the value is expensive, and we are inside an appropriately
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
short loop, put the value into a pseudo and then put the pseudo
into the hard reg.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
For small register classes, also do this if this call uses
register parameters. This is to avoid reload conflicts while
loading the parameters registers. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if ((! (GET_CODE (args[i].value) == REG
|| (GET_CODE (args[i].value) == SUBREG
&& GET_CODE (SUBREG_REG (args[i].value)) == REG)))
&& args[i].mode != BLKmode
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
&& rtx_cost (args[i].value, SET) > COSTS_N_INSNS (1)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
&& ((SMALL_REGISTER_CLASSES && *reg_parm_seen)
|| preserve_subexpressions_p ()))
args[i].value = copy_to_mode_reg (args[i].mode, args[i].value);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef REG_PARM_STACK_SPACE
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* The argument list is the property of the called routine and it
may clobber it. If the fixed area has been used for previous
parameters, we must save and restore it. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static rtx
save_fixed_argument_area (reg_parm_stack_space, argblock,
low_to_save, high_to_save)
int reg_parm_stack_space;
rtx argblock;
int *low_to_save;
int *high_to_save;
{
int i;
rtx save_area = NULL_RTX;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Compute the boundary of the that needs to be saved, if any. */
#ifdef ARGS_GROW_DOWNWARD
for (i = 0; i < reg_parm_stack_space + 1; i++)
#else
for (i = 0; i < reg_parm_stack_space; i++)
#endif
{
if (i >= highest_outgoing_arg_in_use
|| stack_usage_map[i] == 0)
continue;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (*low_to_save == -1)
*low_to_save = i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
*high_to_save = i;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (*low_to_save >= 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int num_to_save = *high_to_save - *low_to_save + 1;
enum machine_mode save_mode
= mode_for_size (num_to_save * BITS_PER_UNIT, MODE_INT, 1);
rtx stack_area;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If we don't have the required alignment, must do this in BLKmode. */
if ((*low_to_save & (MIN (GET_MODE_SIZE (save_mode),
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
BIGGEST_ALIGNMENT / UNITS_PER_WORD) - 1)))
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
save_mode = BLKmode;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#ifdef ARGS_GROW_DOWNWARD
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
stack_area
= gen_rtx_MEM (save_mode,
memory_address (save_mode,
plus_constant (argblock,
- *high_to_save)));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#else
stack_area = gen_rtx_MEM (save_mode,
memory_address (save_mode,
plus_constant (argblock,
*low_to_save)));
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
set_mem_align (stack_area, PARM_BOUNDARY);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (save_mode == BLKmode)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
save_area = assign_stack_temp (BLKmode, num_to_save, 0);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Cannot use emit_block_move here because it can be done by a
library call which in turn gets into this place again and deadly
infinite recursion happens. */
move_by_pieces (validize_mem (save_area), stack_area, num_to_save,
PARM_BOUNDARY);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
else
{
save_area = gen_reg_rtx (save_mode);
emit_move_insn (save_area, stack_area);
}
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return save_area;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
restore_fixed_argument_area (save_area, argblock, high_to_save, low_to_save)
rtx save_area;
rtx argblock;
int high_to_save;
int low_to_save;
{
enum machine_mode save_mode = GET_MODE (save_area);
#ifdef ARGS_GROW_DOWNWARD
rtx stack_area
= gen_rtx_MEM (save_mode,
memory_address (save_mode,
plus_constant (argblock,
- high_to_save)));
#else
rtx stack_area
= gen_rtx_MEM (save_mode,
memory_address (save_mode,
plus_constant (argblock,
low_to_save)));
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (save_mode != BLKmode)
emit_move_insn (stack_area, save_area);
else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Cannot use emit_block_move here because it can be done by a library
call which in turn gets into this place again and deadly infinite
recursion happens. */
move_by_pieces (stack_area, validize_mem (save_area),
high_to_save - low_to_save + 1, PARM_BOUNDARY);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#endif /* REG_PARM_STACK_SPACE */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If any elements in ARGS refer to parameters that are to be passed in
registers, but not in memory, and whose alignment does not permit a
direct copy into registers. Copy the values into a group of pseudos
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
which we will later copy into the appropriate hard registers.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Pseudos for each unaligned argument will be stored into the array
args[argnum].aligned_regs. The caller is responsible for deallocating
the aligned_regs array if it is nonzero. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
store_unaligned_arguments_into_pseudos (args, num_actuals)
struct arg_data *args;
int num_actuals;
{
int i, j;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
for (i = 0; i < num_actuals; i++)
if (args[i].reg != 0 && ! args[i].pass_on_stack
&& args[i].mode == BLKmode
&& (TYPE_ALIGN (TREE_TYPE (args[i].tree_value))
< (unsigned int) MIN (BIGGEST_ALIGNMENT, BITS_PER_WORD)))
{
int bytes = int_size_in_bytes (TREE_TYPE (args[i].tree_value));
int big_endian_correction = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
args[i].n_aligned_regs
= args[i].partial ? args[i].partial
: (bytes + (UNITS_PER_WORD - 1)) / UNITS_PER_WORD;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
args[i].aligned_regs = (rtx *) xmalloc (sizeof (rtx)
* args[i].n_aligned_regs);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Structures smaller than a word are aligned to the least
significant byte (to the right). On a BYTES_BIG_ENDIAN machine,
this means we must skip the empty high order bytes when
calculating the bit offset. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (BYTES_BIG_ENDIAN
&& !FUNCTION_ARG_REG_LITTLE_ENDIAN
&& bytes < UNITS_PER_WORD)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
big_endian_correction = (BITS_PER_WORD - (bytes * BITS_PER_UNIT));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
for (j = 0; j < args[i].n_aligned_regs; j++)
{
rtx reg = gen_reg_rtx (word_mode);
rtx word = operand_subword_force (args[i].value, j, BLKmode);
int bitsize = MIN (bytes * BITS_PER_UNIT, BITS_PER_WORD);
args[i].aligned_regs[j] = reg;
/* There is no need to restrict this code to loading items
in TYPE_ALIGN sized hunks. The bitfield instructions can
load up entire word sized registers efficiently.
??? This may not be needed anymore.
We use to emit a clobber here but that doesn't let later
passes optimize the instructions we emit. By storing 0 into
the register later passes know the first AND to zero out the
bitfield being set in the register is unnecessary. The store
of 0 will be deleted as will at least the first AND. */
emit_move_insn (reg, const0_rtx);
bytes -= bitsize / BITS_PER_UNIT;
store_bit_field (reg, bitsize, big_endian_correction, word_mode,
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
extract_bit_field (word, bitsize, 0, 1, NULL_RTX,
word_mode, word_mode,
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
BITS_PER_WORD),
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
BITS_PER_WORD);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
}
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Fill in ARGS_SIZE and ARGS array based on the parameters found in
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
ACTPARMS.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
NUM_ACTUALS is the total number of parameters.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
N_NAMED_ARGS is the total number of named arguments.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
FNDECL is the tree code for the target of this call (if known)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
ARGS_SO_FAR holds state needed by the target to know where to place
the next argument.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
REG_PARM_STACK_SPACE is the number of bytes of stack space reserved
for arguments which are passed in registers.
OLD_STACK_LEVEL is a pointer to an rtx which olds the old stack level
and may be modified by this routine.
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
OLD_PENDING_ADJ, MUST_PREALLOCATE and FLAGS are pointers to integer
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
flags which may may be modified by this routine. */
static void
initialize_argument_information (num_actuals, args, args_size, n_named_args,
actparms, fndecl, args_so_far,
reg_parm_stack_space, old_stack_level,
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
old_pending_adj, must_preallocate,
ecf_flags)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int num_actuals ATTRIBUTE_UNUSED;
struct arg_data *args;
struct args_size *args_size;
int n_named_args ATTRIBUTE_UNUSED;
tree actparms;
tree fndecl;
CUMULATIVE_ARGS *args_so_far;
int reg_parm_stack_space;
rtx *old_stack_level;
int *old_pending_adj;
int *must_preallocate;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int *ecf_flags;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
/* 1 if scanning parms front to back, -1 if scanning back to front. */
int inc;
/* Count arg position in order args appear. */
int argpos;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct args_size alignment_pad;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int i;
tree p;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
args_size->constant = 0;
args_size->var = 0;
/* In this loop, we consider args in the order they are written.
We fill up ARGS from the front or from the back if necessary
so that in any case the first arg to be pushed ends up at the front. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (PUSH_ARGS_REVERSED)
{
i = num_actuals - 1, inc = -1;
/* In this case, must reverse order of args
so that we compute and push the last arg first. */
}
else
{
i = 0, inc = 1;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* I counts args in order (to be) pushed; ARGPOS counts in order written. */
for (p = actparms, argpos = 0; p; p = TREE_CHAIN (p), i += inc, argpos++)
{
tree type = TREE_TYPE (TREE_VALUE (p));
int unsignedp;
enum machine_mode mode;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
args[i].tree_value = TREE_VALUE (p);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Replace erroneous argument with constant zero. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (type == error_mark_node || !COMPLETE_TYPE_P (type))
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
args[i].tree_value = integer_zero_node, type = integer_type_node;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If TYPE is a transparent union, pass things the way we would
pass the first field of the union. We have already verified that
the modes are the same. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (TREE_CODE (type) == UNION_TYPE && TYPE_TRANSPARENT_UNION (type))
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
type = TREE_TYPE (TYPE_FIELDS (type));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Decide where to pass this arg.
args[i].reg is nonzero if all or part is passed in registers.
args[i].partial is nonzero if part but not all is passed in registers,
and the exact value says how many words are passed in registers.
args[i].pass_on_stack is nonzero if the argument must at least be
computed on the stack. It may then be loaded back into registers
if args[i].reg is nonzero.
These decisions are driven by the FUNCTION_... macros and must agree
with those made by function.c. */
/* See if this argument should be passed by invisible reference. */
if ((TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST
&& contains_placeholder_p (TYPE_SIZE (type)))
|| TREE_ADDRESSABLE (type)
#ifdef FUNCTION_ARG_PASS_BY_REFERENCE
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
|| FUNCTION_ARG_PASS_BY_REFERENCE (*args_so_far, TYPE_MODE (type),
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
type, argpos < n_named_args)
#endif
)
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* If we're compiling a thunk, pass through invisible
references instead of making a copy. */
if (current_function_is_thunk
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#ifdef FUNCTION_ARG_CALLEE_COPIES
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
|| (FUNCTION_ARG_CALLEE_COPIES (*args_so_far, TYPE_MODE (type),
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
type, argpos < n_named_args)
/* If it's in a register, we must make a copy of it too. */
/* ??? Is this a sufficient test? Is there a better one? */
&& !(TREE_CODE (args[i].tree_value) == VAR_DECL
&& REG_P (DECL_RTL (args[i].tree_value)))
&& ! TREE_ADDRESSABLE (type))
#endif
)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* C++ uses a TARGET_EXPR to indicate that we want to make a
new object from the argument. If we are passing by
invisible reference, the callee will do that for us, so we
can strip off the TARGET_EXPR. This is not always safe,
but it is safe in the only case where this is a useful
optimization; namely, when the argument is a plain object.
In that case, the frontend is just asking the backend to
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
make a bitwise copy of the argument. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (TREE_CODE (args[i].tree_value) == TARGET_EXPR
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
&& (DECL_P (TREE_OPERAND (args[i].tree_value, 1)))
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
&& ! REG_P (DECL_RTL (TREE_OPERAND (args[i].tree_value, 1))))
args[i].tree_value = TREE_OPERAND (args[i].tree_value, 1);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
args[i].tree_value = build1 (ADDR_EXPR,
build_pointer_type (type),
args[i].tree_value);
type = build_pointer_type (type);
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
else if (TREE_CODE (args[i].tree_value) == TARGET_EXPR)
{
/* In the V3 C++ ABI, parameters are destroyed in the caller.
We implement this by passing the address of the temporary
rather than expanding it into another allocated slot. */
args[i].tree_value = build1 (ADDR_EXPR,
build_pointer_type (type),
args[i].tree_value);
type = build_pointer_type (type);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
{
/* We make a copy of the object and pass the address to the
function being called. */
rtx copy;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (!COMPLETE_TYPE_P (type)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
|| TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST
|| (flag_stack_check && ! STACK_CHECK_BUILTIN
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
&& (0 < compare_tree_int (TYPE_SIZE_UNIT (type),
STACK_CHECK_MAX_VAR_SIZE))))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
/* This is a variable-sized object. Make space on the stack
for it. */
rtx size_rtx = expr_size (TREE_VALUE (p));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (*old_stack_level == 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
emit_stack_save (SAVE_BLOCK, old_stack_level, NULL_RTX);
*old_pending_adj = pending_stack_adjust;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
pending_stack_adjust = 0;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
copy = gen_rtx_MEM (BLKmode,
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
allocate_dynamic_stack_space
(size_rtx, NULL_RTX, TYPE_ALIGN (type)));
set_mem_attributes (copy, type, 1);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
copy = assign_temp (type, 0, 1, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
store_expr (args[i].tree_value, copy, 0);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
*ecf_flags &= ~(ECF_CONST | ECF_PURE | ECF_LIBCALL_BLOCK);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
args[i].tree_value = build1 (ADDR_EXPR,
build_pointer_type (type),
make_tree (type, copy));
type = build_pointer_type (type);
}
}
mode = TYPE_MODE (type);
unsignedp = TREE_UNSIGNED (type);
#ifdef PROMOTE_FUNCTION_ARGS
mode = promote_mode (type, mode, &unsignedp, 1);
#endif
args[i].unsignedp = unsignedp;
args[i].mode = mode;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
args[i].reg = FUNCTION_ARG (*args_so_far, mode, type,
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
argpos < n_named_args);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef FUNCTION_INCOMING_ARG
/* If this is a sibling call and the machine has register windows, the
register window has to be unwinded before calling the routine, so
arguments have to go into the incoming registers. */
args[i].tail_call_reg = FUNCTION_INCOMING_ARG (*args_so_far, mode, type,
argpos < n_named_args);
#else
args[i].tail_call_reg = args[i].reg;
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#ifdef FUNCTION_ARG_PARTIAL_NREGS
if (args[i].reg)
args[i].partial
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
= FUNCTION_ARG_PARTIAL_NREGS (*args_so_far, mode, type,
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
argpos < n_named_args);
#endif
args[i].pass_on_stack = MUST_PASS_IN_STACK (mode, type);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If FUNCTION_ARG returned a (parallel [(expr_list (nil) ...) ...]),
it means that we are to pass this arg in the register(s) designated
by the PARALLEL, but also to pass it in the stack. */
if (args[i].reg && GET_CODE (args[i].reg) == PARALLEL
&& XEXP (XVECEXP (args[i].reg, 0, 0), 0) == 0)
args[i].pass_on_stack = 1;
/* If this is an addressable type, we must preallocate the stack
since we must evaluate the object into its final location.
If this is to be passed in both registers and the stack, it is simpler
to preallocate. */
if (TREE_ADDRESSABLE (type)
|| (args[i].pass_on_stack && args[i].reg != 0))
*must_preallocate = 1;
/* If this is an addressable type, we cannot pre-evaluate it. Thus,
we cannot consider this function call constant. */
if (TREE_ADDRESSABLE (type))
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*ecf_flags &= ~ECF_LIBCALL_BLOCK;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Compute the stack-size of this argument. */
if (args[i].reg == 0 || args[i].partial != 0
|| reg_parm_stack_space > 0
|| args[i].pass_on_stack)
locate_and_pad_parm (mode, type,
#ifdef STACK_PARMS_IN_REG_PARM_AREA
1,
#else
args[i].reg != 0,
#endif
fndecl, args_size, &args[i].offset,
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&args[i].size, &alignment_pad);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#ifndef ARGS_GROW_DOWNWARD
args[i].slot_offset = *args_size;
#endif
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args[i].alignment_pad = alignment_pad;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If a part of the arg was put into registers,
don't include that part in the amount pushed. */
if (reg_parm_stack_space == 0 && ! args[i].pass_on_stack)
args[i].size.constant -= ((args[i].partial * UNITS_PER_WORD)
/ (PARM_BOUNDARY / BITS_PER_UNIT)
* (PARM_BOUNDARY / BITS_PER_UNIT));
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Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Update ARGS_SIZE, the total stack space for args so far. */
args_size->constant += args[i].size.constant;
if (args[i].size.var)
{
ADD_PARM_SIZE (*args_size, args[i].size.var);
}
/* Since the slot offset points to the bottom of the slot,
we must record it after incrementing if the args grow down. */
#ifdef ARGS_GROW_DOWNWARD
args[i].slot_offset = *args_size;
args[i].slot_offset.constant = -args_size->constant;
if (args_size->var)
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SUB_PARM_SIZE (args[i].slot_offset, args_size->var);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#endif
/* Increment ARGS_SO_FAR, which has info about which arg-registers
have been used, etc. */
FUNCTION_ARG_ADVANCE (*args_so_far, TYPE_MODE (type), type,
argpos < n_named_args);
}
}
/* Update ARGS_SIZE to contain the total size for the argument block.
Return the original constant component of the argument block's size.
REG_PARM_STACK_SPACE holds the number of bytes of stack space reserved
for arguments passed in registers. */
static int
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compute_argument_block_size (reg_parm_stack_space, args_size,
preferred_stack_boundary)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int reg_parm_stack_space;
struct args_size *args_size;
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int preferred_stack_boundary ATTRIBUTE_UNUSED;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
int unadjusted_args_size = args_size->constant;
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/* For accumulate outgoing args mode we don't need to align, since the frame
will be already aligned. Align to STACK_BOUNDARY in order to prevent
backends from generating misaligned frame sizes. */
if (ACCUMULATE_OUTGOING_ARGS && preferred_stack_boundary > STACK_BOUNDARY)
preferred_stack_boundary = STACK_BOUNDARY;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Compute the actual size of the argument block required. The variable
and constant sizes must be combined, the size may have to be rounded,
and there may be a minimum required size. */
if (args_size->var)
{
args_size->var = ARGS_SIZE_TREE (*args_size);
args_size->constant = 0;
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preferred_stack_boundary /= BITS_PER_UNIT;
if (preferred_stack_boundary > 1)
{
/* We don't handle this case yet. To handle it correctly we have
to add the delta, round and subtract the delta.
Currently no machine description requires this support. */
if (stack_pointer_delta & (preferred_stack_boundary - 1))
abort ();
args_size->var = round_up (args_size->var, preferred_stack_boundary);
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (reg_parm_stack_space > 0)
{
args_size->var
= size_binop (MAX_EXPR, args_size->var,
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ssize_int (reg_parm_stack_space));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#ifndef OUTGOING_REG_PARM_STACK_SPACE
/* The area corresponding to register parameters is not to count in
the size of the block we need. So make the adjustment. */
args_size->var
= size_binop (MINUS_EXPR, args_size->var,
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ssize_int (reg_parm_stack_space));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#endif
}
}
else
{
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preferred_stack_boundary /= BITS_PER_UNIT;
if (preferred_stack_boundary < 1)
preferred_stack_boundary = 1;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
args_size->constant = (((args_size->constant
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+ stack_pointer_delta
+ preferred_stack_boundary - 1)
/ preferred_stack_boundary
* preferred_stack_boundary)
- stack_pointer_delta);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
args_size->constant = MAX (args_size->constant,
reg_parm_stack_space);
#ifdef MAYBE_REG_PARM_STACK_SPACE
if (reg_parm_stack_space == 0)
args_size->constant = 0;
#endif
#ifndef OUTGOING_REG_PARM_STACK_SPACE
args_size->constant -= reg_parm_stack_space;
#endif
}
return unadjusted_args_size;
}
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/* Precompute parameters as needed for a function call.
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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FLAGS is mask of ECF_* constants.
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
NUM_ACTUALS is the number of arguments.
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2002-02-01 18:16:02 +00:00
ARGS is an array containing information for each argument; this
routine fills in the INITIAL_VALUE and VALUE fields for each
precomputed argument. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
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precompute_arguments (flags, num_actuals, args)
int flags;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int num_actuals;
struct arg_data *args;
{
int i;
/* If this function call is cse'able, precompute all the parameters.
Note that if the parameter is constructed into a temporary, this will
cause an additional copy because the parameter will be constructed
into a temporary location and then copied into the outgoing arguments.
If a parameter contains a call to alloca and this function uses the
stack, precompute the parameter. */
/* If we preallocated the stack space, and some arguments must be passed
on the stack, then we must precompute any parameter which contains a
function call which will store arguments on the stack.
Otherwise, evaluating the parameter may clobber previous parameters
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2002-02-01 18:16:02 +00:00
which have already been stored into the stack. (we have code to avoid
such case by saving the outgoing stack arguments, but it results in
worse code) */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
for (i = 0; i < num_actuals; i++)
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if ((flags & ECF_LIBCALL_BLOCK)
|| calls_function (args[i].tree_value, !ACCUMULATE_OUTGOING_ARGS))
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
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enum machine_mode mode;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If this is an addressable type, we cannot pre-evaluate it. */
if (TREE_ADDRESSABLE (TREE_TYPE (args[i].tree_value)))
abort ();
push_temp_slots ();
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2002-02-01 18:16:02 +00:00
args[i].value
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
= expand_expr (args[i].tree_value, NULL_RTX, VOIDmode, 0);
preserve_temp_slots (args[i].value);
pop_temp_slots ();
/* ANSI doesn't require a sequence point here,
but PCC has one, so this will avoid some problems. */
emit_queue ();
args[i].initial_value = args[i].value
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= protect_from_queue (args[i].value, 0);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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mode = TYPE_MODE (TREE_TYPE (args[i].tree_value));
if (mode != args[i].mode)
{
args[i].value
= convert_modes (args[i].mode, mode,
args[i].value, args[i].unsignedp);
#ifdef PROMOTE_FOR_CALL_ONLY
/* CSE will replace this only if it contains args[i].value
pseudo, so convert it down to the declared mode using
a SUBREG. */
if (GET_CODE (args[i].value) == REG
&& GET_MODE_CLASS (args[i].mode) == MODE_INT)
{
args[i].initial_value
= gen_lowpart_SUBREG (mode, args[i].value);
SUBREG_PROMOTED_VAR_P (args[i].initial_value) = 1;
SUBREG_PROMOTED_UNSIGNED_P (args[i].initial_value)
= args[i].unsignedp;
}
#endif
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
}
/* Given the current state of MUST_PREALLOCATE and information about
arguments to a function call in NUM_ACTUALS, ARGS and ARGS_SIZE,
compute and return the final value for MUST_PREALLOCATE. */
static int
finalize_must_preallocate (must_preallocate, num_actuals, args, args_size)
int must_preallocate;
int num_actuals;
struct arg_data *args;
struct args_size *args_size;
{
/* See if we have or want to preallocate stack space.
If we would have to push a partially-in-regs parm
before other stack parms, preallocate stack space instead.
If the size of some parm is not a multiple of the required stack
alignment, we must preallocate.
If the total size of arguments that would otherwise create a copy in
a temporary (such as a CALL) is more than half the total argument list
size, preallocation is faster.
Another reason to preallocate is if we have a machine (like the m88k)
where stack alignment is required to be maintained between every
pair of insns, not just when the call is made. However, we assume here
that such machines either do not have push insns (and hence preallocation
would occur anyway) or the problem is taken care of with
PUSH_ROUNDING. */
if (! must_preallocate)
{
int partial_seen = 0;
int copy_to_evaluate_size = 0;
int i;
for (i = 0; i < num_actuals && ! must_preallocate; i++)
{
if (args[i].partial > 0 && ! args[i].pass_on_stack)
partial_seen = 1;
else if (partial_seen && args[i].reg == 0)
must_preallocate = 1;
if (TYPE_MODE (TREE_TYPE (args[i].tree_value)) == BLKmode
&& (TREE_CODE (args[i].tree_value) == CALL_EXPR
|| TREE_CODE (args[i].tree_value) == TARGET_EXPR
|| TREE_CODE (args[i].tree_value) == COND_EXPR
|| TREE_ADDRESSABLE (TREE_TYPE (args[i].tree_value))))
copy_to_evaluate_size
+= int_size_in_bytes (TREE_TYPE (args[i].tree_value));
}
if (copy_to_evaluate_size * 2 >= args_size->constant
&& args_size->constant > 0)
must_preallocate = 1;
}
return must_preallocate;
}
/* If we preallocated stack space, compute the address of each argument
and store it into the ARGS array.
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We need not ensure it is a valid memory address here; it will be
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
validized when it is used.
ARGBLOCK is an rtx for the address of the outgoing arguments. */
static void
compute_argument_addresses (args, argblock, num_actuals)
struct arg_data *args;
rtx argblock;
int num_actuals;
{
if (argblock)
{
rtx arg_reg = argblock;
int i, arg_offset = 0;
if (GET_CODE (argblock) == PLUS)
arg_reg = XEXP (argblock, 0), arg_offset = INTVAL (XEXP (argblock, 1));
for (i = 0; i < num_actuals; i++)
{
rtx offset = ARGS_SIZE_RTX (args[i].offset);
rtx slot_offset = ARGS_SIZE_RTX (args[i].slot_offset);
rtx addr;
/* Skip this parm if it will not be passed on the stack. */
if (! args[i].pass_on_stack && args[i].reg != 0)
continue;
if (GET_CODE (offset) == CONST_INT)
addr = plus_constant (arg_reg, INTVAL (offset));
else
addr = gen_rtx_PLUS (Pmode, arg_reg, offset);
addr = plus_constant (addr, arg_offset);
args[i].stack = gen_rtx_MEM (args[i].mode, addr);
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set_mem_attributes (args[i].stack,
TREE_TYPE (args[i].tree_value), 1);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (GET_CODE (slot_offset) == CONST_INT)
addr = plus_constant (arg_reg, INTVAL (slot_offset));
else
addr = gen_rtx_PLUS (Pmode, arg_reg, slot_offset);
addr = plus_constant (addr, arg_offset);
args[i].stack_slot = gen_rtx_MEM (args[i].mode, addr);
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2002-02-01 18:16:02 +00:00
set_mem_attributes (args[i].stack_slot,
TREE_TYPE (args[i].tree_value), 1);
/* Function incoming arguments may overlap with sibling call
outgoing arguments and we cannot allow reordering of reads
from function arguments with stores to outgoing arguments
of sibling calls. */
set_mem_alias_set (args[i].stack, 0);
set_mem_alias_set (args[i].stack_slot, 0);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
}
}
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2002-02-01 18:16:02 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Given a FNDECL and EXP, return an rtx suitable for use as a target address
in a call instruction.
FNDECL is the tree node for the target function. For an indirect call
FNDECL will be NULL_TREE.
EXP is the CALL_EXPR for this call. */
static rtx
rtx_for_function_call (fndecl, exp)
tree fndecl;
tree exp;
{
rtx funexp;
/* Get the function to call, in the form of RTL. */
if (fndecl)
{
/* If this is the first use of the function, see if we need to
make an external definition for it. */
if (! TREE_USED (fndecl))
{
assemble_external (fndecl);
TREE_USED (fndecl) = 1;
}
/* Get a SYMBOL_REF rtx for the function address. */
funexp = XEXP (DECL_RTL (fndecl), 0);
}
else
/* Generate an rtx (probably a pseudo-register) for the address. */
{
rtx funaddr;
push_temp_slots ();
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funaddr = funexp
= expand_expr (TREE_OPERAND (exp, 0), NULL_RTX, VOIDmode, 0);
pop_temp_slots (); /* FUNEXP can't be BLKmode. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
emit_queue ();
}
return funexp;
}
/* Do the register loads required for any wholly-register parms or any
parms which are passed both on the stack and in a register. Their
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expressions were already evaluated.
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Mark all register-parms as living through the call, putting these USE
insns in the CALL_INSN_FUNCTION_USAGE field. */
static void
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2002-02-01 18:16:02 +00:00
load_register_parameters (args, num_actuals, call_fusage, flags)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct arg_data *args;
int num_actuals;
rtx *call_fusage;
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2002-02-01 18:16:02 +00:00
int flags;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
int i, j;
#ifdef LOAD_ARGS_REVERSED
for (i = num_actuals - 1; i >= 0; i--)
#else
for (i = 0; i < num_actuals; i++)
#endif
{
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2002-02-01 18:16:02 +00:00
rtx reg = ((flags & ECF_SIBCALL)
? args[i].tail_call_reg : args[i].reg);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int partial = args[i].partial;
int nregs;
if (reg)
{
/* Set to non-negative if must move a word at a time, even if just
one word (e.g, partial == 1 && mode == DFmode). Set to -1 if
we just use a normal move insn. This value can be zero if the
argument is a zero size structure with no fields. */
nregs = (partial ? partial
: (TYPE_MODE (TREE_TYPE (args[i].tree_value)) == BLKmode
? ((int_size_in_bytes (TREE_TYPE (args[i].tree_value))
+ (UNITS_PER_WORD - 1)) / UNITS_PER_WORD)
: -1));
/* Handle calls that pass values in multiple non-contiguous
locations. The Irix 6 ABI has examples of this. */
if (GET_CODE (reg) == PARALLEL)
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emit_group_load (reg, args[i].value,
int_size_in_bytes (TREE_TYPE (args[i].tree_value)));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If simple case, just do move. If normal partial, store_one_arg
has already loaded the register for us. In all other cases,
load the register(s) from memory. */
else if (nregs == -1)
emit_move_insn (reg, args[i].value);
/* If we have pre-computed the values to put in the registers in
the case of non-aligned structures, copy them in now. */
else if (args[i].n_aligned_regs != 0)
for (j = 0; j < args[i].n_aligned_regs; j++)
emit_move_insn (gen_rtx_REG (word_mode, REGNO (reg) + j),
args[i].aligned_regs[j]);
else if (partial == 0 || args[i].pass_on_stack)
move_block_to_reg (REGNO (reg),
validize_mem (args[i].value), nregs,
args[i].mode);
/* Handle calls that pass values in multiple non-contiguous
locations. The Irix 6 ABI has examples of this. */
if (GET_CODE (reg) == PARALLEL)
use_group_regs (call_fusage, reg);
else if (nregs == -1)
use_reg (call_fusage, reg);
else
use_regs (call_fusage, REGNO (reg), nregs == 0 ? 1 : nregs);
}
}
}
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2002-02-01 18:16:02 +00:00
/* Try to integrate function. See expand_inline_function for documentation
about the parameters. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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2002-02-01 18:16:02 +00:00
static rtx
try_to_integrate (fndecl, actparms, target, ignore, type, structure_value_addr)
tree fndecl;
tree actparms;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
rtx target;
int ignore;
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2002-02-01 18:16:02 +00:00
tree type;
rtx structure_value_addr;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
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2002-02-01 18:16:02 +00:00
rtx temp;
rtx before_call;
int i;
rtx old_stack_level = 0;
int reg_parm_stack_space = 0;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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2002-02-01 18:16:02 +00:00
#ifdef REG_PARM_STACK_SPACE
#ifdef MAYBE_REG_PARM_STACK_SPACE
reg_parm_stack_space = MAYBE_REG_PARM_STACK_SPACE;
#else
reg_parm_stack_space = REG_PARM_STACK_SPACE (fndecl);
#endif
#endif
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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2002-02-01 18:16:02 +00:00
before_call = get_last_insn ();
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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timevar_push (TV_INTEGRATION);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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2002-02-01 18:16:02 +00:00
temp = expand_inline_function (fndecl, actparms, target,
ignore, type,
structure_value_addr);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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2002-02-01 18:16:02 +00:00
timevar_pop (TV_INTEGRATION);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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2002-02-01 18:16:02 +00:00
/* If inlining succeeded, return. */
if (temp != (rtx) (size_t) - 1)
{
if (ACCUMULATE_OUTGOING_ARGS)
{
/* If the outgoing argument list must be preserved, push
the stack before executing the inlined function if it
makes any calls. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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for (i = reg_parm_stack_space - 1; i >= 0; i--)
if (i < highest_outgoing_arg_in_use && stack_usage_map[i] != 0)
break;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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if (stack_arg_under_construction || i >= 0)
{
rtx first_insn
= before_call ? NEXT_INSN (before_call) : get_insns ();
rtx insn = NULL_RTX, seq;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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/* Look for a call in the inline function code.
If DECL_SAVED_INSNS (fndecl)->outgoing_args_size is
nonzero then there is a call and it is not necessary
to scan the insns. */
if (DECL_SAVED_INSNS (fndecl)->outgoing_args_size == 0)
for (insn = first_insn; insn; insn = NEXT_INSN (insn))
if (GET_CODE (insn) == CALL_INSN)
break;
if (insn)
{
/* Reserve enough stack space so that the largest
argument list of any function call in the inline
function does not overlap the argument list being
evaluated. This is usually an overestimate because
allocate_dynamic_stack_space reserves space for an
outgoing argument list in addition to the requested
space, but there is no way to ask for stack space such
that an argument list of a certain length can be
safely constructed.
Add the stack space reserved for register arguments, if
any, in the inline function. What is really needed is the
largest value of reg_parm_stack_space in the inline
function, but that is not available. Using the current
value of reg_parm_stack_space is wrong, but gives
correct results on all supported machines. */
int adjust = (DECL_SAVED_INSNS (fndecl)->outgoing_args_size
+ reg_parm_stack_space);
start_sequence ();
emit_stack_save (SAVE_BLOCK, &old_stack_level, NULL_RTX);
allocate_dynamic_stack_space (GEN_INT (adjust),
NULL_RTX, BITS_PER_UNIT);
seq = get_insns ();
end_sequence ();
emit_insns_before (seq, first_insn);
emit_stack_restore (SAVE_BLOCK, old_stack_level, NULL_RTX);
}
}
}
/* If the result is equivalent to TARGET, return TARGET to simplify
checks in store_expr. They can be equivalent but not equal in the
case of a function that returns BLKmode. */
if (temp != target && rtx_equal_p (temp, target))
return target;
return temp;
}
/* If inlining failed, mark FNDECL as needing to be compiled
separately after all. If function was declared inline,
give a warning. */
if (DECL_INLINE (fndecl) && warn_inline && !flag_no_inline
&& optimize > 0 && !TREE_ADDRESSABLE (fndecl))
{
warning_with_decl (fndecl, "inlining failed in call to `%s'");
warning ("called from here");
}
mark_addressable (fndecl);
return (rtx) (size_t) - 1;
}
/* We need to pop PENDING_STACK_ADJUST bytes. But, if the arguments
wouldn't fill up an even multiple of PREFERRED_UNIT_STACK_BOUNDARY
bytes, then we would need to push some additional bytes to pad the
arguments. So, we compute an adjust to the stack pointer for an
amount that will leave the stack under-aligned by UNADJUSTED_ARGS_SIZE
bytes. Then, when the arguments are pushed the stack will be perfectly
aligned. ARGS_SIZE->CONSTANT is set to the number of bytes that should
be popped after the call. Returns the adjustment. */
static int
combine_pending_stack_adjustment_and_call (unadjusted_args_size,
args_size,
preferred_unit_stack_boundary)
int unadjusted_args_size;
struct args_size *args_size;
int preferred_unit_stack_boundary;
{
/* The number of bytes to pop so that the stack will be
under-aligned by UNADJUSTED_ARGS_SIZE bytes. */
HOST_WIDE_INT adjustment;
/* The alignment of the stack after the arguments are pushed, if we
just pushed the arguments without adjust the stack here. */
HOST_WIDE_INT unadjusted_alignment;
unadjusted_alignment
= ((stack_pointer_delta + unadjusted_args_size)
% preferred_unit_stack_boundary);
/* We want to get rid of as many of the PENDING_STACK_ADJUST bytes
as possible -- leaving just enough left to cancel out the
UNADJUSTED_ALIGNMENT. In other words, we want to ensure that the
PENDING_STACK_ADJUST is non-negative, and congruent to
-UNADJUSTED_ALIGNMENT modulo the PREFERRED_UNIT_STACK_BOUNDARY. */
/* Begin by trying to pop all the bytes. */
unadjusted_alignment
= (unadjusted_alignment
- (pending_stack_adjust % preferred_unit_stack_boundary));
adjustment = pending_stack_adjust;
/* Push enough additional bytes that the stack will be aligned
after the arguments are pushed. */
if (preferred_unit_stack_boundary > 1)
{
if (unadjusted_alignment > 0)
adjustment -= preferred_unit_stack_boundary - unadjusted_alignment;
else
adjustment += unadjusted_alignment;
}
/* Now, sets ARGS_SIZE->CONSTANT so that we pop the right number of
bytes after the call. The right number is the entire
PENDING_STACK_ADJUST less our ADJUSTMENT plus the amount required
by the arguments in the first place. */
args_size->constant
= pending_stack_adjust - adjustment + unadjusted_args_size;
return adjustment;
}
/* Scan X expression if it does not dereference any argument slots
we already clobbered by tail call arguments (as noted in stored_args_map
bitmap).
Return non-zero if X expression dereferences such argument slots,
zero otherwise. */
static int
check_sibcall_argument_overlap_1 (x)
rtx x;
{
RTX_CODE code;
int i, j;
unsigned int k;
const char *fmt;
if (x == NULL_RTX)
return 0;
code = GET_CODE (x);
if (code == MEM)
{
if (XEXP (x, 0) == current_function_internal_arg_pointer)
i = 0;
else if (GET_CODE (XEXP (x, 0)) == PLUS
&& XEXP (XEXP (x, 0), 0) ==
current_function_internal_arg_pointer
&& GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT)
i = INTVAL (XEXP (XEXP (x, 0), 1));
else
return 0;
#ifdef ARGS_GROW_DOWNWARD
i = -i - GET_MODE_SIZE (GET_MODE (x));
#endif
for (k = 0; k < GET_MODE_SIZE (GET_MODE (x)); k++)
if (i + k < stored_args_map->n_bits
&& TEST_BIT (stored_args_map, i + k))
return 1;
return 0;
}
/* Scan all subexpressions. */
fmt = GET_RTX_FORMAT (code);
for (i = 0; i < GET_RTX_LENGTH (code); i++, fmt++)
{
if (*fmt == 'e')
{
if (check_sibcall_argument_overlap_1 (XEXP (x, i)))
return 1;
}
else if (*fmt == 'E')
{
for (j = 0; j < XVECLEN (x, i); j++)
if (check_sibcall_argument_overlap_1 (XVECEXP (x, i, j)))
return 1;
}
}
return 0;
}
/* Scan sequence after INSN if it does not dereference any argument slots
we already clobbered by tail call arguments (as noted in stored_args_map
bitmap). Add stack slots for ARG to stored_args_map bitmap afterwards.
Return non-zero if sequence after INSN dereferences such argument slots,
zero otherwise. */
static int
check_sibcall_argument_overlap (insn, arg)
rtx insn;
struct arg_data *arg;
{
int low, high;
if (insn == NULL_RTX)
insn = get_insns ();
else
insn = NEXT_INSN (insn);
for (; insn; insn = NEXT_INSN (insn))
if (INSN_P (insn)
&& check_sibcall_argument_overlap_1 (PATTERN (insn)))
break;
#ifdef ARGS_GROW_DOWNWARD
low = -arg->slot_offset.constant - arg->size.constant;
#else
low = arg->slot_offset.constant;
#endif
for (high = low + arg->size.constant; low < high; low++)
SET_BIT (stored_args_map, low);
return insn != NULL_RTX;
}
/* Generate all the code for a function call
and return an rtx for its value.
Store the value in TARGET (specified as an rtx) if convenient.
If the value is stored in TARGET then TARGET is returned.
If IGNORE is nonzero, then we ignore the value of the function call. */
rtx
expand_call (exp, target, ignore)
tree exp;
rtx target;
int ignore;
{
/* Nonzero if we are currently expanding a call. */
static int currently_expanding_call = 0;
/* List of actual parameters. */
tree actparms = TREE_OPERAND (exp, 1);
/* RTX for the function to be called. */
rtx funexp;
/* Sequence of insns to perform a tail recursive "call". */
rtx tail_recursion_insns = NULL_RTX;
/* Sequence of insns to perform a normal "call". */
rtx normal_call_insns = NULL_RTX;
/* Sequence of insns to perform a tail recursive "call". */
rtx tail_call_insns = NULL_RTX;
/* Data type of the function. */
tree funtype;
/* Declaration of the function being called,
or 0 if the function is computed (not known by name). */
tree fndecl = 0;
rtx insn;
int try_tail_call = 1;
int try_tail_recursion = 1;
int pass;
/* Register in which non-BLKmode value will be returned,
or 0 if no value or if value is BLKmode. */
rtx valreg;
/* Address where we should return a BLKmode value;
0 if value not BLKmode. */
rtx structure_value_addr = 0;
/* Nonzero if that address is being passed by treating it as
an extra, implicit first parameter. Otherwise,
it is passed by being copied directly into struct_value_rtx. */
int structure_value_addr_parm = 0;
/* Size of aggregate value wanted, or zero if none wanted
or if we are using the non-reentrant PCC calling convention
or expecting the value in registers. */
HOST_WIDE_INT struct_value_size = 0;
/* Nonzero if called function returns an aggregate in memory PCC style,
by returning the address of where to find it. */
int pcc_struct_value = 0;
/* Number of actual parameters in this call, including struct value addr. */
int num_actuals;
/* Number of named args. Args after this are anonymous ones
and they must all go on the stack. */
int n_named_args;
/* Vector of information about each argument.
Arguments are numbered in the order they will be pushed,
not the order they are written. */
struct arg_data *args;
/* Total size in bytes of all the stack-parms scanned so far. */
struct args_size args_size;
struct args_size adjusted_args_size;
/* Size of arguments before any adjustments (such as rounding). */
int unadjusted_args_size;
/* Data on reg parms scanned so far. */
CUMULATIVE_ARGS args_so_far;
/* Nonzero if a reg parm has been scanned. */
int reg_parm_seen;
/* Nonzero if this is an indirect function call. */
/* Nonzero if we must avoid push-insns in the args for this call.
If stack space is allocated for register parameters, but not by the
caller, then it is preallocated in the fixed part of the stack frame.
So the entire argument block must then be preallocated (i.e., we
ignore PUSH_ROUNDING in that case). */
int must_preallocate = !PUSH_ARGS;
/* Size of the stack reserved for parameter registers. */
int reg_parm_stack_space = 0;
/* Address of space preallocated for stack parms
(on machines that lack push insns), or 0 if space not preallocated. */
rtx argblock = 0;
/* Mask of ECF_ flags. */
int flags = 0;
/* Nonzero if this is a call to an inline function. */
int is_integrable = 0;
#ifdef REG_PARM_STACK_SPACE
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Define the boundary of the register parm stack space that needs to be
save, if any. */
int low_to_save = -1, high_to_save;
rtx save_area = 0; /* Place that it is saved */
#endif
int initial_highest_arg_in_use = highest_outgoing_arg_in_use;
char *initial_stack_usage_map = stack_usage_map;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int old_stack_arg_under_construction = 0;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
rtx old_stack_level = 0;
int old_pending_adj = 0;
int old_inhibit_defer_pop = inhibit_defer_pop;
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2002-02-01 18:16:02 +00:00
int old_stack_allocated;
rtx call_fusage;
tree p = TREE_OPERAND (exp, 0);
int i;
/* The alignment of the stack, in bits. */
HOST_WIDE_INT preferred_stack_boundary;
/* The alignment of the stack, in bytes. */
HOST_WIDE_INT preferred_unit_stack_boundary;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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2002-02-01 18:16:02 +00:00
/* See if this is "nothrow" function call. */
if (TREE_NOTHROW (exp))
flags |= ECF_NOTHROW;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* See if we can find a DECL-node for the actual function.
As a result, decide whether this is a call to an integrable function. */
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2002-02-01 18:16:02 +00:00
fndecl = get_callee_fndecl (exp);
if (fndecl)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
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2002-02-01 18:16:02 +00:00
if (!flag_no_inline
&& fndecl != current_function_decl
&& DECL_INLINE (fndecl)
&& DECL_SAVED_INSNS (fndecl)
&& DECL_SAVED_INSNS (fndecl)->inlinable)
is_integrable = 1;
else if (! TREE_ADDRESSABLE (fndecl))
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* In case this function later becomes inlinable,
record that there was already a non-inline call to it.
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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2002-02-01 18:16:02 +00:00
Use abstraction instead of setting TREE_ADDRESSABLE
directly. */
if (DECL_INLINE (fndecl) && warn_inline && !flag_no_inline
&& optimize > 0)
{
warning_with_decl (fndecl, "can't inline call to `%s'");
warning ("called from here");
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
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2002-02-01 18:16:02 +00:00
mark_addressable (fndecl);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
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2002-02-01 18:16:02 +00:00
flags |= flags_from_decl_or_type (fndecl);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
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2002-02-01 18:16:02 +00:00
/* If we don't have specific function to call, see if we have a
attributes set in the type. */
else
flags |= flags_from_decl_or_type (TREE_TYPE (TREE_TYPE (p)));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#ifdef REG_PARM_STACK_SPACE
#ifdef MAYBE_REG_PARM_STACK_SPACE
reg_parm_stack_space = MAYBE_REG_PARM_STACK_SPACE;
#else
reg_parm_stack_space = REG_PARM_STACK_SPACE (fndecl);
#endif
#endif
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#ifndef OUTGOING_REG_PARM_STACK_SPACE
if (reg_parm_stack_space > 0 && PUSH_ARGS)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
must_preallocate = 1;
#endif
/* Warn if this value is an aggregate type,
regardless of which calling convention we are using for it. */
if (warn_aggregate_return && AGGREGATE_TYPE_P (TREE_TYPE (exp)))
warning ("function call has aggregate value");
/* Set up a place to return a structure. */
/* Cater to broken compilers. */
if (aggregate_value_p (exp))
{
/* This call returns a big structure. */
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2002-02-01 18:16:02 +00:00
flags &= ~(ECF_CONST | ECF_PURE | ECF_LIBCALL_BLOCK);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#ifdef PCC_STATIC_STRUCT_RETURN
{
pcc_struct_value = 1;
/* Easier than making that case work right. */
if (is_integrable)
{
/* In case this is a static function, note that it has been
used. */
if (! TREE_ADDRESSABLE (fndecl))
mark_addressable (fndecl);
is_integrable = 0;
}
}
#else /* not PCC_STATIC_STRUCT_RETURN */
{
struct_value_size = int_size_in_bytes (TREE_TYPE (exp));
if (target && GET_CODE (target) == MEM)
structure_value_addr = XEXP (target, 0);
else
{
/* For variable-sized objects, we must be called with a target
specified. If we were to allocate space on the stack here,
we would have no way of knowing when to free it. */
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rtx d = assign_temp (TREE_TYPE (exp), 1, 1, 1);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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mark_temp_addr_taken (d);
structure_value_addr = XEXP (d, 0);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
target = 0;
}
}
#endif /* not PCC_STATIC_STRUCT_RETURN */
}
/* If called function is inline, try to integrate it. */
if (is_integrable)
{
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rtx temp = try_to_integrate (fndecl, actparms, target,
ignore, TREE_TYPE (exp),
structure_value_addr);
if (temp != (rtx) (size_t) - 1)
return temp;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
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2002-02-01 18:16:02 +00:00
/* Figure out the amount to which the stack should be aligned. */
preferred_stack_boundary = PREFERRED_STACK_BOUNDARY;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Operand 0 is a pointer-to-function; get the type of the function. */
funtype = TREE_TYPE (TREE_OPERAND (exp, 0));
if (! POINTER_TYPE_P (funtype))
abort ();
funtype = TREE_TYPE (funtype);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* See if this is a call to a function that can return more than once
or a call to longjmp or malloc. */
flags |= special_function_p (fndecl, flags);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (flags & ECF_MAY_BE_ALLOCA)
current_function_calls_alloca = 1;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If struct_value_rtx is 0, it means pass the address
as if it were an extra parameter. */
if (structure_value_addr && struct_value_rtx == 0)
{
/* If structure_value_addr is a REG other than
virtual_outgoing_args_rtx, we can use always use it. If it
is not a REG, we must always copy it into a register.
If it is virtual_outgoing_args_rtx, we must copy it to another
register in some cases. */
rtx temp = (GET_CODE (structure_value_addr) != REG
|| (ACCUMULATE_OUTGOING_ARGS
&& stack_arg_under_construction
&& structure_value_addr == virtual_outgoing_args_rtx)
? copy_addr_to_reg (structure_value_addr)
: structure_value_addr);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
actparms
= tree_cons (error_mark_node,
make_tree (build_pointer_type (TREE_TYPE (funtype)),
temp),
actparms);
structure_value_addr_parm = 1;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Count the arguments and set NUM_ACTUALS. */
for (p = actparms, num_actuals = 0; p; p = TREE_CHAIN (p))
num_actuals++;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Compute number of named args.
Normally, don't include the last named arg if anonymous args follow.
We do include the last named arg if STRICT_ARGUMENT_NAMING is nonzero.
(If no anonymous args follow, the result of list_length is actually
one too large. This is harmless.)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
If PRETEND_OUTGOING_VARARGS_NAMED is set and STRICT_ARGUMENT_NAMING is
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
zero, this machine will be able to place unnamed args that were
passed in registers into the stack. So treat all args as named.
This allows the insns emitting for a specific argument list to be
independent of the function declaration.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
If PRETEND_OUTGOING_VARARGS_NAMED is not set, we do not have any
reliable way to pass unnamed args in registers, so we must force
them into memory. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if ((STRICT_ARGUMENT_NAMING
|| ! PRETEND_OUTGOING_VARARGS_NAMED)
&& TYPE_ARG_TYPES (funtype) != 0)
n_named_args
= (list_length (TYPE_ARG_TYPES (funtype))
/* Don't include the last named arg. */
- (STRICT_ARGUMENT_NAMING ? 0 : 1)
/* Count the struct value address, if it is passed as a parm. */
+ structure_value_addr_parm);
else
/* If we know nothing, treat all args as named. */
n_named_args = num_actuals;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Start updating where the next arg would go.
On some machines (such as the PA) indirect calls have a different
calling convention than normal calls. The last argument in
INIT_CUMULATIVE_ARGS tells the backend if this is an indirect call
or not. */
INIT_CUMULATIVE_ARGS (args_so_far, funtype, NULL_RTX, (fndecl == 0));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Make a vector to hold all the information about each arg. */
args = (struct arg_data *) alloca (num_actuals * sizeof (struct arg_data));
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
memset ((char *) args, 0, num_actuals * sizeof (struct arg_data));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Build up entries in the ARGS array, compute the size of the
arguments into ARGS_SIZE, etc. */
initialize_argument_information (num_actuals, args, &args_size,
n_named_args, actparms, fndecl,
&args_so_far, reg_parm_stack_space,
&old_stack_level, &old_pending_adj,
&must_preallocate, &flags);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (args_size.var)
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If this function requires a variable-sized argument list, don't
try to make a cse'able block for this call. We may be able to
do this eventually, but it is too complicated to keep track of
what insns go in the cse'able block and which don't. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
flags &= ~ECF_LIBCALL_BLOCK;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
must_preallocate = 1;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Now make final decision about preallocating stack space. */
must_preallocate = finalize_must_preallocate (must_preallocate,
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
num_actuals, args,
&args_size);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If the structure value address will reference the stack pointer, we
must stabilize it. We don't need to do this if we know that we are
not going to adjust the stack pointer in processing this call. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (structure_value_addr
&& (reg_mentioned_p (virtual_stack_dynamic_rtx, structure_value_addr)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
|| reg_mentioned_p (virtual_outgoing_args_rtx,
structure_value_addr))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
&& (args_size.var
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
|| (!ACCUMULATE_OUTGOING_ARGS && args_size.constant)))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
structure_value_addr = copy_to_reg (structure_value_addr);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Tail calls can make things harder to debug, and we're traditionally
pushed these optimizations into -O2. Don't try if we're already
expanding a call, as that means we're an argument. Don't try if
there's cleanups, as we know there's code to follow the call.
If rtx_equal_function_value_matters is false, that means we've
finished with regular parsing. Which means that some of the
machinery we use to generate tail-calls is no longer in place.
This is most often true of sjlj-exceptions, which we couldn't
tail-call to anyway. */
if (currently_expanding_call++ != 0
|| !flag_optimize_sibling_calls
|| !rtx_equal_function_value_matters
|| any_pending_cleanups (1)
|| args_size.var)
try_tail_call = try_tail_recursion = 0;
/* Tail recursion fails, when we are not dealing with recursive calls. */
if (!try_tail_recursion
|| TREE_CODE (TREE_OPERAND (exp, 0)) != ADDR_EXPR
|| TREE_OPERAND (TREE_OPERAND (exp, 0), 0) != current_function_decl)
try_tail_recursion = 0;
/* Rest of purposes for tail call optimizations to fail. */
if (
#ifdef HAVE_sibcall_epilogue
!HAVE_sibcall_epilogue
#else
1
#endif
|| !try_tail_call
/* Doing sibling call optimization needs some work, since
structure_value_addr can be allocated on the stack.
It does not seem worth the effort since few optimizable
sibling calls will return a structure. */
|| structure_value_addr != NULL_RTX
/* If the register holding the address is a callee saved
register, then we lose. We have no way to prevent that,
so we only allow calls to named functions. */
/* ??? This could be done by having the insn constraints
use a register class that is all call-clobbered. Any
reload insns generated to fix things up would appear
before the sibcall_epilogue. */
|| fndecl == NULL_TREE
|| (flags & (ECF_RETURNS_TWICE | ECF_LONGJMP))
|| TREE_THIS_VOLATILE (fndecl)
|| !FUNCTION_OK_FOR_SIBCALL (fndecl)
/* If this function requires more stack slots than the current
function, we cannot change it into a sibling call. */
|| args_size.constant > current_function_args_size
/* If the callee pops its own arguments, then it must pop exactly
the same number of arguments as the current function. */
|| RETURN_POPS_ARGS (fndecl, funtype, args_size.constant)
!= RETURN_POPS_ARGS (current_function_decl,
TREE_TYPE (current_function_decl),
current_function_args_size))
try_tail_call = 0;
if (try_tail_call || try_tail_recursion)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int end, inc;
actparms = NULL_TREE;
/* Ok, we're going to give the tail call the old college try.
This means we're going to evaluate the function arguments
up to three times. There are two degrees of badness we can
encounter, those that can be unsaved and those that can't.
(See unsafe_for_reeval commentary for details.)
Generate a new argument list. Pass safe arguments through
unchanged. For the easy badness wrap them in UNSAVE_EXPRs.
For hard badness, evaluate them now and put their resulting
rtx in a temporary VAR_DECL.
initialize_argument_information has ordered the array for the
order to be pushed, and we must remember this when reconstructing
the original argument order. */
if (PUSH_ARGS_REVERSED)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
inc = 1;
i = 0;
end = num_actuals;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
else
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
inc = -1;
i = num_actuals - 1;
end = -1;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (; i != end; i += inc)
{
switch (unsafe_for_reeval (args[i].tree_value))
{
case 0: /* Safe. */
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case 1: /* Mildly unsafe. */
args[i].tree_value = unsave_expr (args[i].tree_value);
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
case 2: /* Wildly unsafe. */
{
tree var = build_decl (VAR_DECL, NULL_TREE,
TREE_TYPE (args[i].tree_value));
SET_DECL_RTL (var,
expand_expr (args[i].tree_value, NULL_RTX,
VOIDmode, EXPAND_NORMAL));
args[i].tree_value = var;
}
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
default:
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* We need to build actparms for optimize_tail_recursion. We can
safely trash away TREE_PURPOSE, since it is unused by this
function. */
if (try_tail_recursion)
actparms = tree_cons (NULL_TREE, args[i].tree_value, actparms);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Expanding one of those dangerous arguments could have added
cleanups, but otherwise give it a whirl. */
if (any_pending_cleanups (1))
try_tail_call = try_tail_recursion = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Generate a tail recursion sequence when calling ourselves. */
if (try_tail_recursion)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* We want to emit any pending stack adjustments before the tail
recursion "call". That way we know any adjustment after the tail
recursion call can be ignored if we indeed use the tail recursion
call expansion. */
int save_pending_stack_adjust = pending_stack_adjust;
int save_stack_pointer_delta = stack_pointer_delta;
/* Emit any queued insns now; otherwise they would end up in
only one of the alternates. */
emit_queue ();
/* Use a new sequence to hold any RTL we generate. We do not even
know if we will use this RTL yet. The final decision can not be
made until after RTL generation for the entire function is
complete. */
start_sequence ();
/* If expanding any of the arguments creates cleanups, we can't
do a tailcall. So, we'll need to pop the pending cleanups
list. If, however, all goes well, and there are no cleanups
then the call to expand_start_target_temps will have no
effect. */
expand_start_target_temps ();
if (optimize_tail_recursion (actparms, get_last_insn ()))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (any_pending_cleanups (1))
try_tail_call = try_tail_recursion = 0;
else
tail_recursion_insns = get_insns ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
expand_end_target_temps ();
end_sequence ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Restore the original pending stack adjustment for the sibling and
normal call cases below. */
pending_stack_adjust = save_pending_stack_adjust;
stack_pointer_delta = save_stack_pointer_delta;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (profile_arc_flag && (flags & ECF_FORK_OR_EXEC))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* A fork duplicates the profile information, and an exec discards
it. We can't rely on fork/exec to be paired. So write out the
profile information we have gathered so far, and clear it. */
/* ??? When Linux's __clone is called with CLONE_VM set, profiling
is subject to race conditions, just as with multithreaded
programs. */
emit_library_call (gen_rtx_SYMBOL_REF (Pmode, "__bb_fork_func"),
LCT_ALWAYS_RETURN,
VOIDmode, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Ensure current function's preferred stack boundary is at least
what we need. We don't have to increase alignment for recursive
functions. */
if (cfun->preferred_stack_boundary < preferred_stack_boundary
&& fndecl != current_function_decl)
cfun->preferred_stack_boundary = preferred_stack_boundary;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
preferred_unit_stack_boundary = preferred_stack_boundary / BITS_PER_UNIT;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
function_call_count++;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* We want to make two insn chains; one for a sibling call, the other
for a normal call. We will select one of the two chains after
initial RTL generation is complete. */
for (pass = 0; pass < 2; pass++)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int sibcall_failure = 0;
/* We want to emit any pending stack adjustments before the tail
recursion "call". That way we know any adjustment after the tail
recursion call can be ignored if we indeed use the tail recursion
call expansion. */
int save_pending_stack_adjust = 0;
int save_stack_pointer_delta = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rtx insns;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx before_call, next_arg_reg;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (pass == 0)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! try_tail_call)
continue;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Emit any queued insns now; otherwise they would end up in
only one of the alternates. */
emit_queue ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* State variables we need to save and restore between
iterations. */
save_pending_stack_adjust = pending_stack_adjust;
save_stack_pointer_delta = stack_pointer_delta;
}
if (pass)
flags &= ~ECF_SIBCALL;
else
flags |= ECF_SIBCALL;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Other state variables that we must reinitialize each time
through the loop (that are not initialized by the loop itself). */
argblock = 0;
call_fusage = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Start a new sequence for the normal call case.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
From this point on, if the sibling call fails, we want to set
sibcall_failure instead of continuing the loop. */
start_sequence ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (pass == 0)
{
/* We know at this point that there are not currently any
pending cleanups. If, however, in the process of evaluating
the arguments we were to create some, we'll need to be
able to get rid of them. */
expand_start_target_temps ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Don't let pending stack adjusts add up to too much.
Also, do all pending adjustments now if there is any chance
this might be a call to alloca or if we are expanding a sibling
call sequence or if we are calling a function that is to return
with stack pointer depressed. */
if (pending_stack_adjust >= 32
|| (pending_stack_adjust > 0
&& (flags & (ECF_MAY_BE_ALLOCA | ECF_SP_DEPRESSED)))
|| pass == 0)
do_pending_stack_adjust ();
/* When calling a const function, we must pop the stack args right away,
so that the pop is deleted or moved with the call. */
if (pass && (flags & ECF_LIBCALL_BLOCK))
NO_DEFER_POP;
/* Push the temporary stack slot level so that we can free any
temporaries we make. */
push_temp_slots ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef FINAL_REG_PARM_STACK_SPACE
reg_parm_stack_space = FINAL_REG_PARM_STACK_SPACE (args_size.constant,
args_size.var);
#endif
/* Precompute any arguments as needed. */
if (pass)
precompute_arguments (flags, num_actuals, args);
/* Now we are about to start emitting insns that can be deleted
if a libcall is deleted. */
if (pass && (flags & (ECF_LIBCALL_BLOCK | ECF_MALLOC)))
start_sequence ();
adjusted_args_size = args_size;
/* Compute the actual size of the argument block required. The variable
and constant sizes must be combined, the size may have to be rounded,
and there may be a minimum required size. When generating a sibcall
pattern, do not round up, since we'll be re-using whatever space our
caller provided. */
unadjusted_args_size
= compute_argument_block_size (reg_parm_stack_space,
&adjusted_args_size,
(pass == 0 ? 0
: preferred_stack_boundary));
old_stack_allocated = stack_pointer_delta - pending_stack_adjust;
/* The argument block when performing a sibling call is the
incoming argument block. */
if (pass == 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
argblock = virtual_incoming_args_rtx;
stored_args_map = sbitmap_alloc (args_size.constant);
sbitmap_zero (stored_args_map);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If we have no actual push instructions, or shouldn't use them,
make space for all args right now. */
else if (adjusted_args_size.var != 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (old_stack_level == 0)
{
emit_stack_save (SAVE_BLOCK, &old_stack_level, NULL_RTX);
old_pending_adj = pending_stack_adjust;
pending_stack_adjust = 0;
/* stack_arg_under_construction says whether a stack arg is
being constructed at the old stack level. Pushing the stack
gets a clean outgoing argument block. */
old_stack_arg_under_construction = stack_arg_under_construction;
stack_arg_under_construction = 0;
}
argblock = push_block (ARGS_SIZE_RTX (adjusted_args_size), 0, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
else
{
/* Note that we must go through the motions of allocating an argument
block even if the size is zero because we may be storing args
in the area reserved for register arguments, which may be part of
the stack frame. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int needed = adjusted_args_size.constant;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Store the maximum argument space used. It will be pushed by
the prologue (if ACCUMULATE_OUTGOING_ARGS, or stack overflow
checking). */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (needed > current_function_outgoing_args_size)
current_function_outgoing_args_size = needed;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (must_preallocate)
{
if (ACCUMULATE_OUTGOING_ARGS)
{
/* Since the stack pointer will never be pushed, it is
possible for the evaluation of a parm to clobber
something we have already written to the stack.
Since most function calls on RISC machines do not use
the stack, this is uncommon, but must work correctly.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Therefore, we save any area of the stack that was already
written and that we are using. Here we set up to do this
by making a new stack usage map from the old one. The
actual save will be done by store_one_arg.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Another approach might be to try to reorder the argument
evaluations to avoid this conflicting stack usage. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifndef OUTGOING_REG_PARM_STACK_SPACE
/* Since we will be writing into the entire argument area,
the map must be allocated for its entire size, not just
the part that is the responsibility of the caller. */
needed += reg_parm_stack_space;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef ARGS_GROW_DOWNWARD
highest_outgoing_arg_in_use = MAX (initial_highest_arg_in_use,
needed + 1);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
highest_outgoing_arg_in_use = MAX (initial_highest_arg_in_use,
needed);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
stack_usage_map
= (char *) alloca (highest_outgoing_arg_in_use);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (initial_highest_arg_in_use)
memcpy (stack_usage_map, initial_stack_usage_map,
initial_highest_arg_in_use);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (initial_highest_arg_in_use != highest_outgoing_arg_in_use)
memset (&stack_usage_map[initial_highest_arg_in_use], 0,
(highest_outgoing_arg_in_use
- initial_highest_arg_in_use));
needed = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* The address of the outgoing argument list must not be
copied to a register here, because argblock would be left
pointing to the wrong place after the call to
allocate_dynamic_stack_space below. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
argblock = virtual_outgoing_args_rtx;
}
else
{
if (inhibit_defer_pop == 0)
{
/* Try to reuse some or all of the pending_stack_adjust
to get this space. */
needed
= (combine_pending_stack_adjustment_and_call
(unadjusted_args_size,
&adjusted_args_size,
preferred_unit_stack_boundary));
/* combine_pending_stack_adjustment_and_call computes
an adjustment before the arguments are allocated.
Account for them and see whether or not the stack
needs to go up or down. */
needed = unadjusted_args_size - needed;
if (needed < 0)
{
/* We're releasing stack space. */
/* ??? We can avoid any adjustment at all if we're
already aligned. FIXME. */
pending_stack_adjust = -needed;
do_pending_stack_adjust ();
needed = 0;
}
else
/* We need to allocate space. We'll do that in
push_block below. */
pending_stack_adjust = 0;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Special case this because overhead of `push_block' in
this case is non-trivial. */
if (needed == 0)
argblock = virtual_outgoing_args_rtx;
else
argblock = push_block (GEN_INT (needed), 0, 0);
/* We only really need to call `copy_to_reg' in the case
where push insns are going to be used to pass ARGBLOCK
to a function call in ARGS. In that case, the stack
pointer changes value from the allocation point to the
call point, and hence the value of
VIRTUAL_OUTGOING_ARGS_RTX changes as well. But might
as well always do it. */
argblock = copy_to_reg (argblock);
/* The save/restore code in store_one_arg handles all
cases except one: a constructor call (including a C
function returning a BLKmode struct) to initialize
an argument. */
if (stack_arg_under_construction)
{
#ifndef OUTGOING_REG_PARM_STACK_SPACE
rtx push_size = GEN_INT (reg_parm_stack_space
+ adjusted_args_size.constant);
#else
rtx push_size = GEN_INT (adjusted_args_size.constant);
#endif
if (old_stack_level == 0)
{
emit_stack_save (SAVE_BLOCK, &old_stack_level,
NULL_RTX);
old_pending_adj = pending_stack_adjust;
pending_stack_adjust = 0;
/* stack_arg_under_construction says whether a stack
arg is being constructed at the old stack level.
Pushing the stack gets a clean outgoing argument
block. */
old_stack_arg_under_construction
= stack_arg_under_construction;
stack_arg_under_construction = 0;
/* Make a new map for the new argument list. */
stack_usage_map = (char *)
alloca (highest_outgoing_arg_in_use);
memset (stack_usage_map, 0, highest_outgoing_arg_in_use);
highest_outgoing_arg_in_use = 0;
}
allocate_dynamic_stack_space (push_size, NULL_RTX,
BITS_PER_UNIT);
}
/* If argument evaluation might modify the stack pointer,
copy the address of the argument list to a register. */
for (i = 0; i < num_actuals; i++)
if (args[i].pass_on_stack)
{
argblock = copy_addr_to_reg (argblock);
break;
}
}
}
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
compute_argument_addresses (args, argblock, num_actuals);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If we push args individually in reverse order, perform stack alignment
before the first push (the last arg). */
if (PUSH_ARGS_REVERSED && argblock == 0
&& adjusted_args_size.constant != unadjusted_args_size)
{
/* When the stack adjustment is pending, we get better code
by combining the adjustments. */
if (pending_stack_adjust
&& ! (flags & ECF_LIBCALL_BLOCK)
&& ! inhibit_defer_pop)
{
pending_stack_adjust
= (combine_pending_stack_adjustment_and_call
(unadjusted_args_size,
&adjusted_args_size,
preferred_unit_stack_boundary));
do_pending_stack_adjust ();
}
else if (argblock == 0)
anti_adjust_stack (GEN_INT (adjusted_args_size.constant
- unadjusted_args_size));
}
/* Now that the stack is properly aligned, pops can't safely
be deferred during the evaluation of the arguments. */
NO_DEFER_POP;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
funexp = rtx_for_function_call (fndecl, exp);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Figure out the register where the value, if any, will come back. */
valreg = 0;
if (TYPE_MODE (TREE_TYPE (exp)) != VOIDmode
&& ! structure_value_addr)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (pcc_struct_value)
valreg = hard_function_value (build_pointer_type (TREE_TYPE (exp)),
fndecl, (pass == 0));
else
valreg = hard_function_value (TREE_TYPE (exp), fndecl, (pass == 0));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Precompute all register parameters. It isn't safe to compute anything
once we have started filling any specific hard regs. */
precompute_register_parameters (num_actuals, args, &reg_parm_seen);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef REG_PARM_STACK_SPACE
/* Save the fixed argument area if it's part of the caller's frame and
is clobbered by argument setup for this call. */
if (ACCUMULATE_OUTGOING_ARGS && pass)
save_area = save_fixed_argument_area (reg_parm_stack_space, argblock,
&low_to_save, &high_to_save);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Now store (and compute if necessary) all non-register parms.
These come before register parms, since they can require block-moves,
which could clobber the registers used for register parms.
Parms which have partial registers are not stored here,
but we do preallocate space here if they want that. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = 0; i < num_actuals; i++)
if (args[i].reg == 0 || args[i].pass_on_stack)
{
rtx before_arg = get_last_insn ();
if (store_one_arg (&args[i], argblock, flags,
adjusted_args_size.var != 0,
reg_parm_stack_space)
|| (pass == 0
&& check_sibcall_argument_overlap (before_arg,
&args[i])))
sibcall_failure = 1;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If we have a parm that is passed in registers but not in memory
and whose alignment does not permit a direct copy into registers,
make a group of pseudos that correspond to each register that we
will later fill. */
if (STRICT_ALIGNMENT)
store_unaligned_arguments_into_pseudos (args, num_actuals);
/* Now store any partially-in-registers parm.
This is the last place a block-move can happen. */
if (reg_parm_seen)
for (i = 0; i < num_actuals; i++)
if (args[i].partial != 0 && ! args[i].pass_on_stack)
{
rtx before_arg = get_last_insn ();
if (store_one_arg (&args[i], argblock, flags,
adjusted_args_size.var != 0,
reg_parm_stack_space)
|| (pass == 0
&& check_sibcall_argument_overlap (before_arg,
&args[i])))
sibcall_failure = 1;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If we pushed args in forward order, perform stack alignment
after pushing the last arg. */
if (!PUSH_ARGS_REVERSED && argblock == 0)
anti_adjust_stack (GEN_INT (adjusted_args_size.constant
- unadjusted_args_size));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If register arguments require space on the stack and stack space
was not preallocated, allocate stack space here for arguments
passed in registers. */
#ifdef OUTGOING_REG_PARM_STACK_SPACE
if (!ACCUMULATE_OUTGOING_ARGS
&& must_preallocate == 0 && reg_parm_stack_space > 0)
anti_adjust_stack (GEN_INT (reg_parm_stack_space));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Pass the function the address in which to return a
structure value. */
if (pass != 0 && structure_value_addr && ! structure_value_addr_parm)
{
emit_move_insn (struct_value_rtx,
force_reg (Pmode,
force_operand (structure_value_addr,
NULL_RTX)));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (GET_CODE (struct_value_rtx) == REG)
use_reg (&call_fusage, struct_value_rtx);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
funexp = prepare_call_address (funexp, fndecl, &call_fusage,
reg_parm_seen, pass == 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
load_register_parameters (args, num_actuals, &call_fusage, flags);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Perform postincrements before actually calling the function. */
emit_queue ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Save a pointer to the last insn before the call, so that we can
later safely search backwards to find the CALL_INSN. */
before_call = get_last_insn ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Set up next argument register. For sibling calls on machines
with register windows this should be the incoming register. */
#ifdef FUNCTION_INCOMING_ARG
if (pass == 0)
next_arg_reg = FUNCTION_INCOMING_ARG (args_so_far, VOIDmode,
void_type_node, 1);
else
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
next_arg_reg = FUNCTION_ARG (args_so_far, VOIDmode,
void_type_node, 1);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* All arguments and registers used for the call must be set up by
now! */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Stack must be properly aligned now. */
if (pass && stack_pointer_delta % preferred_unit_stack_boundary)
abort ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Generate the actual call instruction. */
emit_call_1 (funexp, fndecl, funtype, unadjusted_args_size,
adjusted_args_size.constant, struct_value_size,
next_arg_reg, valreg, old_inhibit_defer_pop, call_fusage,
flags);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Verify that we've deallocated all the stack we used. */
if (pass
&& old_stack_allocated != stack_pointer_delta - pending_stack_adjust)
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If call is cse'able, make appropriate pair of reg-notes around it.
Test valreg so we don't crash; may safely ignore `const'
if return type is void. Disable for PARALLEL return values, because
we have no way to move such values into a pseudo register. */
if (pass && (flags & ECF_LIBCALL_BLOCK))
{
rtx insns;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (valreg == 0 || GET_CODE (valreg) == PARALLEL)
{
insns = get_insns ();
end_sequence ();
emit_insns (insns);
}
else
{
rtx note = 0;
rtx temp = gen_reg_rtx (GET_MODE (valreg));
/* Mark the return value as a pointer if needed. */
if (TREE_CODE (TREE_TYPE (exp)) == POINTER_TYPE)
mark_reg_pointer (temp,
TYPE_ALIGN (TREE_TYPE (TREE_TYPE (exp))));
/* Construct an "equal form" for the value which mentions all the
arguments in order as well as the function name. */
for (i = 0; i < num_actuals; i++)
note = gen_rtx_EXPR_LIST (VOIDmode,
args[i].initial_value, note);
note = gen_rtx_EXPR_LIST (VOIDmode, funexp, note);
insns = get_insns ();
end_sequence ();
if (flags & ECF_PURE)
note = gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_USE (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))),
note);
emit_libcall_block (insns, temp, valreg, note);
valreg = temp;
}
}
else if (pass && (flags & ECF_MALLOC))
{
rtx temp = gen_reg_rtx (GET_MODE (valreg));
rtx last, insns;
/* The return value from a malloc-like function is a pointer. */
if (TREE_CODE (TREE_TYPE (exp)) == POINTER_TYPE)
mark_reg_pointer (temp, BIGGEST_ALIGNMENT);
emit_move_insn (temp, valreg);
/* The return value from a malloc-like function can not alias
anything else. */
last = get_last_insn ();
REG_NOTES (last) =
gen_rtx_EXPR_LIST (REG_NOALIAS, temp, REG_NOTES (last));
/* Write out the sequence. */
insns = get_insns ();
end_sequence ();
emit_insns (insns);
valreg = temp;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* For calls to `setjmp', etc., inform flow.c it should complain
if nonvolatile values are live. For functions that cannot return,
inform flow that control does not fall through. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if ((flags & (ECF_NORETURN | ECF_LONGJMP)) || pass == 0)
{
/* The barrier must be emitted
immediately after the CALL_INSN. Some ports emit more
than just a CALL_INSN above, so we must search for it here. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx last = get_last_insn ();
while (GET_CODE (last) != CALL_INSN)
{
last = PREV_INSN (last);
/* There was no CALL_INSN? */
if (last == before_call)
abort ();
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_barrier_after (last);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (flags & ECF_LONGJMP)
current_function_calls_longjmp = 1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If this function is returning into a memory location marked as
readonly, it means it is initializing that location. But we normally
treat functions as not clobbering such locations, so we need to
specify that this one does. */
if (target != 0 && GET_CODE (target) == MEM
&& structure_value_addr != 0 && RTX_UNCHANGING_P (target))
emit_insn (gen_rtx_CLOBBER (VOIDmode, target));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If value type not void, return an rtx for the value. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If there are cleanups to be called, don't use a hard reg as target.
We need to double check this and see if it matters anymore. */
if (any_pending_cleanups (1))
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (target && REG_P (target)
&& REGNO (target) < FIRST_PSEUDO_REGISTER)
target = 0;
sibcall_failure = 1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (TYPE_MODE (TREE_TYPE (exp)) == VOIDmode
|| ignore)
target = const0_rtx;
else if (structure_value_addr)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (target == 0 || GET_CODE (target) != MEM)
{
target
= gen_rtx_MEM (TYPE_MODE (TREE_TYPE (exp)),
memory_address (TYPE_MODE (TREE_TYPE (exp)),
structure_value_addr));
set_mem_attributes (target, exp, 1);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
else if (pcc_struct_value)
{
/* This is the special C++ case where we need to
know what the true target was. We take care to
never use this value more than once in one expression. */
target = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (exp)),
copy_to_reg (valreg));
set_mem_attributes (target, exp, 1);
}
/* Handle calls that return values in multiple non-contiguous locations.
The Irix 6 ABI has examples of this. */
else if (GET_CODE (valreg) == PARALLEL)
{
if (target == 0)
{
/* This will only be assigned once, so it can be readonly. */
tree nt = build_qualified_type (TREE_TYPE (exp),
(TYPE_QUALS (TREE_TYPE (exp))
| TYPE_QUAL_CONST));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
target = assign_temp (nt, 0, 1, 1);
preserve_temp_slots (target);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (! rtx_equal_p (target, valreg))
emit_group_store (target, valreg,
int_size_in_bytes (TREE_TYPE (exp)));
/* We can not support sibling calls for this case. */
sibcall_failure = 1;
}
else if (target
&& GET_MODE (target) == TYPE_MODE (TREE_TYPE (exp))
&& GET_MODE (target) == GET_MODE (valreg))
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* TARGET and VALREG cannot be equal at this point because the
latter would not have REG_FUNCTION_VALUE_P true, while the
former would if it were referring to the same register.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
If they refer to the same register, this move will be a no-op,
except when function inlining is being done. */
emit_move_insn (target, valreg);
}
else if (TYPE_MODE (TREE_TYPE (exp)) == BLKmode)
{
target = copy_blkmode_from_reg (target, valreg, TREE_TYPE (exp));
/* We can not support sibling calls for this case. */
sibcall_failure = 1;
}
else
target = copy_to_reg (valreg);
#ifdef PROMOTE_FUNCTION_RETURN
/* If we promoted this return value, make the proper SUBREG. TARGET
might be const0_rtx here, so be careful. */
if (GET_CODE (target) == REG
&& TYPE_MODE (TREE_TYPE (exp)) != BLKmode
&& GET_MODE (target) != TYPE_MODE (TREE_TYPE (exp)))
{
tree type = TREE_TYPE (exp);
int unsignedp = TREE_UNSIGNED (type);
int offset = 0;
/* If we don't promote as expected, something is wrong. */
if (GET_MODE (target)
!= promote_mode (type, TYPE_MODE (type), &unsignedp, 1))
abort ();
if ((WORDS_BIG_ENDIAN || BYTES_BIG_ENDIAN)
&& GET_MODE_SIZE (GET_MODE (target))
> GET_MODE_SIZE (TYPE_MODE (type)))
{
offset = GET_MODE_SIZE (GET_MODE (target))
- GET_MODE_SIZE (TYPE_MODE (type));
if (! BYTES_BIG_ENDIAN)
offset = (offset / UNITS_PER_WORD) * UNITS_PER_WORD;
else if (! WORDS_BIG_ENDIAN)
offset %= UNITS_PER_WORD;
}
target = gen_rtx_SUBREG (TYPE_MODE (type), target, offset);
SUBREG_PROMOTED_VAR_P (target) = 1;
SUBREG_PROMOTED_UNSIGNED_P (target) = unsignedp;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If size of args is variable or this was a constructor call for a stack
argument, restore saved stack-pointer value. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (old_stack_level && ! (flags & ECF_SP_DEPRESSED))
{
emit_stack_restore (SAVE_BLOCK, old_stack_level, NULL_RTX);
pending_stack_adjust = old_pending_adj;
stack_arg_under_construction = old_stack_arg_under_construction;
highest_outgoing_arg_in_use = initial_highest_arg_in_use;
stack_usage_map = initial_stack_usage_map;
sibcall_failure = 1;
}
else if (ACCUMULATE_OUTGOING_ARGS && pass)
{
#ifdef REG_PARM_STACK_SPACE
if (save_area)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
restore_fixed_argument_area (save_area, argblock,
high_to_save, low_to_save);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If we saved any argument areas, restore them. */
for (i = 0; i < num_actuals; i++)
if (args[i].save_area)
{
enum machine_mode save_mode = GET_MODE (args[i].save_area);
rtx stack_area
= gen_rtx_MEM (save_mode,
memory_address (save_mode,
XEXP (args[i].stack_slot, 0)));
if (save_mode != BLKmode)
emit_move_insn (stack_area, args[i].save_area);
else
emit_block_move (stack_area,
validize_mem (args[i].save_area),
GEN_INT (args[i].size.constant));
}
highest_outgoing_arg_in_use = initial_highest_arg_in_use;
stack_usage_map = initial_stack_usage_map;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If this was alloca, record the new stack level for nonlocal gotos.
Check for the handler slots since we might not have a save area
for non-local gotos. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if ((flags & ECF_MAY_BE_ALLOCA) && nonlocal_goto_handler_slots != 0)
emit_stack_save (SAVE_NONLOCAL, &nonlocal_goto_stack_level, NULL_RTX);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
pop_temp_slots ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Free up storage we no longer need. */
for (i = 0; i < num_actuals; ++i)
if (args[i].aligned_regs)
free (args[i].aligned_regs);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (pass == 0)
{
/* Undo the fake expand_start_target_temps we did earlier. If
there had been any cleanups created, we've already set
sibcall_failure. */
expand_end_target_temps ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
insns = get_insns ();
end_sequence ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (pass == 0)
{
tail_call_insns = insns;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Restore the pending stack adjustment now that we have
finished generating the sibling call sequence. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
pending_stack_adjust = save_pending_stack_adjust;
stack_pointer_delta = save_stack_pointer_delta;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Prepare arg structure for next iteration. */
for (i = 0; i < num_actuals; i++)
{
args[i].value = 0;
args[i].aligned_regs = 0;
args[i].stack = 0;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
sbitmap_free (stored_args_map);
}
else
normal_call_insns = insns;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If something prevents making this a sibling call,
zero out the sequence. */
if (sibcall_failure)
tail_call_insns = NULL_RTX;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* The function optimize_sibling_and_tail_recursive_calls doesn't
handle CALL_PLACEHOLDERs inside other CALL_PLACEHOLDERs. This
can happen if the arguments to this function call an inline
function who's expansion contains another CALL_PLACEHOLDER.
If there are any C_Ps in any of these sequences, replace them
with their normal call. */
for (insn = normal_call_insns; insn; insn = NEXT_INSN (insn))
if (GET_CODE (insn) == CALL_INSN
&& GET_CODE (PATTERN (insn)) == CALL_PLACEHOLDER)
replace_call_placeholder (insn, sibcall_use_normal);
for (insn = tail_call_insns; insn; insn = NEXT_INSN (insn))
if (GET_CODE (insn) == CALL_INSN
&& GET_CODE (PATTERN (insn)) == CALL_PLACEHOLDER)
replace_call_placeholder (insn, sibcall_use_normal);
for (insn = tail_recursion_insns; insn; insn = NEXT_INSN (insn))
if (GET_CODE (insn) == CALL_INSN
&& GET_CODE (PATTERN (insn)) == CALL_PLACEHOLDER)
replace_call_placeholder (insn, sibcall_use_normal);
/* If this was a potential tail recursion site, then emit a
CALL_PLACEHOLDER with the normal and the tail recursion streams.
One of them will be selected later. */
if (tail_recursion_insns || tail_call_insns)
{
/* The tail recursion label must be kept around. We could expose
its use in the CALL_PLACEHOLDER, but that creates unwanted edges
and makes determining true tail recursion sites difficult.
So we set LABEL_PRESERVE_P here, then clear it when we select
one of the call sequences after rtl generation is complete. */
if (tail_recursion_insns)
LABEL_PRESERVE_P (tail_recursion_label) = 1;
emit_call_insn (gen_rtx_CALL_PLACEHOLDER (VOIDmode, normal_call_insns,
tail_call_insns,
tail_recursion_insns,
tail_recursion_label));
}
else
emit_insns (normal_call_insns);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
currently_expanding_call--;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If this function returns with the stack pointer depressed, ensure
this block saves and restores the stack pointer, show it was
changed, and adjust for any outgoing arg space. */
if (flags & ECF_SP_DEPRESSED)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
clear_pending_stack_adjust ();
emit_insn (gen_rtx (CLOBBER, VOIDmode, stack_pointer_rtx));
emit_move_insn (virtual_stack_dynamic_rtx, stack_pointer_rtx);
save_stack_pointer ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return target;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Output a library call to function FUN (a SYMBOL_REF rtx).
The RETVAL parameter specifies whether return value needs to be saved, other
parameters are documented in the emit_library_call function below. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
static rtx
emit_library_call_value_1 (retval, orgfun, value, fn_type, outmode, nargs, p)
int retval;
rtx orgfun;
rtx value;
enum libcall_type fn_type;
enum machine_mode outmode;
int nargs;
va_list p;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
/* Total size in bytes of all the stack-parms scanned so far. */
struct args_size args_size;
/* Size of arguments before any adjustments (such as rounding). */
struct args_size original_args_size;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int argnum;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rtx fun;
int inc;
int count;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct args_size alignment_pad;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rtx argblock = 0;
CUMULATIVE_ARGS args_so_far;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
struct arg
{
rtx value;
enum machine_mode mode;
rtx reg;
int partial;
struct args_size offset;
struct args_size size;
rtx save_area;
};
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
struct arg *argvec;
int old_inhibit_defer_pop = inhibit_defer_pop;
rtx call_fusage = 0;
rtx mem_value = 0;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx valreg;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
int pcc_struct_value = 0;
int struct_value_size = 0;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int flags;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
int reg_parm_stack_space = 0;
int needed;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx before_call;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef REG_PARM_STACK_SPACE
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Define the boundary of the register parm stack space that needs to be
save, if any. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int low_to_save = -1, high_to_save = 0;
rtx save_area = 0; /* Place that it is saved. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
/* Size of the stack reserved for parameter registers. */
int initial_highest_arg_in_use = highest_outgoing_arg_in_use;
char *initial_stack_usage_map = stack_usage_map;
#ifdef REG_PARM_STACK_SPACE
#ifdef MAYBE_REG_PARM_STACK_SPACE
reg_parm_stack_space = MAYBE_REG_PARM_STACK_SPACE;
#else
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
reg_parm_stack_space = REG_PARM_STACK_SPACE ((tree) 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* By default, library functions can not throw. */
flags = ECF_NOTHROW;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
switch (fn_type)
{
case LCT_NORMAL:
break;
case LCT_CONST:
flags |= ECF_CONST;
break;
case LCT_PURE:
flags |= ECF_PURE;
break;
case LCT_CONST_MAKE_BLOCK:
flags |= ECF_CONST | ECF_LIBCALL_BLOCK;
break;
case LCT_PURE_MAKE_BLOCK:
flags |= ECF_PURE | ECF_LIBCALL_BLOCK;
break;
case LCT_NORETURN:
flags |= ECF_NORETURN;
break;
case LCT_THROW:
flags = ECF_NORETURN;
break;
case LCT_ALWAYS_RETURN:
flags = ECF_ALWAYS_RETURN;
break;
case LCT_RETURNS_TWICE:
flags = ECF_RETURNS_TWICE;
break;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
fun = orgfun;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Ensure current function's preferred stack boundary is at least
what we need. */
if (cfun->preferred_stack_boundary < PREFERRED_STACK_BOUNDARY)
cfun->preferred_stack_boundary = PREFERRED_STACK_BOUNDARY;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* If this kind of value comes back in memory,
decide where in memory it should come back. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (outmode != VOIDmode && aggregate_value_p (type_for_mode (outmode, 0)))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
#ifdef PCC_STATIC_STRUCT_RETURN
rtx pointer_reg
= hard_function_value (build_pointer_type (type_for_mode (outmode, 0)),
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
0, 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
mem_value = gen_rtx_MEM (outmode, pointer_reg);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
pcc_struct_value = 1;
if (value == 0)
value = gen_reg_rtx (outmode);
#else /* not PCC_STATIC_STRUCT_RETURN */
struct_value_size = GET_MODE_SIZE (outmode);
if (value != 0 && GET_CODE (value) == MEM)
mem_value = value;
else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
mem_value = assign_temp (type_for_mode (outmode, 0), 0, 1, 1);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#endif
/* This call returns a big structure. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
flags &= ~(ECF_CONST | ECF_PURE | ECF_LIBCALL_BLOCK);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
/* ??? Unfinished: must pass the memory address as an argument. */
/* Copy all the libcall-arguments out of the varargs data
and into a vector ARGVEC.
Compute how to pass each argument. We only support a very small subset
of the full argument passing conventions to limit complexity here since
library functions shouldn't have many args. */
argvec = (struct arg *) alloca ((nargs + 1) * sizeof (struct arg));
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
memset ((char *) argvec, 0, (nargs + 1) * sizeof (struct arg));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef INIT_CUMULATIVE_LIBCALL_ARGS
INIT_CUMULATIVE_LIBCALL_ARGS (args_so_far, outmode, fun);
#else
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
INIT_CUMULATIVE_ARGS (args_so_far, NULL_TREE, fun, 0);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
args_size.constant = 0;
args_size.var = 0;
count = 0;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Now we are about to start emitting insns that can be deleted
if a libcall is deleted. */
if (flags & ECF_LIBCALL_BLOCK)
start_sequence ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
push_temp_slots ();
/* If there's a structure value address to be passed,
either pass it in the special place, or pass it as an extra argument. */
if (mem_value && struct_value_rtx == 0 && ! pcc_struct_value)
{
rtx addr = XEXP (mem_value, 0);
nargs++;
/* Make sure it is a reasonable operand for a move or push insn. */
if (GET_CODE (addr) != REG && GET_CODE (addr) != MEM
&& ! (CONSTANT_P (addr) && LEGITIMATE_CONSTANT_P (addr)))
addr = force_operand (addr, NULL_RTX);
argvec[count].value = addr;
argvec[count].mode = Pmode;
argvec[count].partial = 0;
argvec[count].reg = FUNCTION_ARG (args_so_far, Pmode, NULL_TREE, 1);
#ifdef FUNCTION_ARG_PARTIAL_NREGS
if (FUNCTION_ARG_PARTIAL_NREGS (args_so_far, Pmode, NULL_TREE, 1))
abort ();
#endif
locate_and_pad_parm (Pmode, NULL_TREE,
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef STACK_PARMS_IN_REG_PARM_AREA
1,
#else
argvec[count].reg != 0,
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
NULL_TREE, &args_size, &argvec[count].offset,
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
&argvec[count].size, &alignment_pad);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (argvec[count].reg == 0 || argvec[count].partial != 0
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
|| reg_parm_stack_space > 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
args_size.constant += argvec[count].size.constant;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
FUNCTION_ARG_ADVANCE (args_so_far, Pmode, (tree) 0, 1);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
count++;
}
for (; count < nargs; count++)
{
rtx val = va_arg (p, rtx);
enum machine_mode mode = va_arg (p, enum machine_mode);
/* We cannot convert the arg value to the mode the library wants here;
must do it earlier where we know the signedness of the arg. */
if (mode == BLKmode
|| (GET_MODE (val) != mode && GET_MODE (val) != VOIDmode))
abort ();
/* On some machines, there's no way to pass a float to a library fcn.
Pass it as a double instead. */
#ifdef LIBGCC_NEEDS_DOUBLE
if (LIBGCC_NEEDS_DOUBLE && mode == SFmode)
val = convert_modes (DFmode, SFmode, val, 0), mode = DFmode;
#endif
/* There's no need to call protect_from_queue, because
either emit_move_insn or emit_push_insn will do that. */
/* Make sure it is a reasonable operand for a move or push insn. */
if (GET_CODE (val) != REG && GET_CODE (val) != MEM
&& ! (CONSTANT_P (val) && LEGITIMATE_CONSTANT_P (val)))
val = force_operand (val, NULL_RTX);
#ifdef FUNCTION_ARG_PASS_BY_REFERENCE
if (FUNCTION_ARG_PASS_BY_REFERENCE (args_so_far, mode, NULL_TREE, 1))
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx slot;
int must_copy = 1
#ifdef FUNCTION_ARG_CALLEE_COPIES
&& ! FUNCTION_ARG_CALLEE_COPIES (args_so_far, mode,
NULL_TREE, 1)
#endif
;
if (GET_MODE (val) == MEM && ! must_copy)
slot = val;
else if (must_copy)
{
slot = assign_temp (type_for_mode (mode, 0), 0, 1, 1);
emit_move_insn (slot, val);
}
else
{
tree type = type_for_mode (mode, 0);
slot = gen_rtx_MEM (mode,
expand_expr (build1 (ADDR_EXPR,
build_pointer_type
(type),
make_tree (type, val)),
NULL_RTX, VOIDmode, 0));
}
call_fusage = gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_USE (VOIDmode, slot),
call_fusage);
if (must_copy)
call_fusage = gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_CLOBBER (VOIDmode,
slot),
call_fusage);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
mode = Pmode;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
val = force_operand (XEXP (slot, 0), NULL_RTX);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
#endif
argvec[count].value = val;
argvec[count].mode = mode;
argvec[count].reg = FUNCTION_ARG (args_so_far, mode, NULL_TREE, 1);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#ifdef FUNCTION_ARG_PARTIAL_NREGS
argvec[count].partial
= FUNCTION_ARG_PARTIAL_NREGS (args_so_far, mode, NULL_TREE, 1);
#else
argvec[count].partial = 0;
#endif
locate_and_pad_parm (mode, NULL_TREE,
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef STACK_PARMS_IN_REG_PARM_AREA
1,
#else
argvec[count].reg != 0,
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
NULL_TREE, &args_size, &argvec[count].offset,
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
&argvec[count].size, &alignment_pad);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (argvec[count].size.var)
abort ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
if (reg_parm_stack_space == 0 && argvec[count].partial)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
argvec[count].size.constant -= argvec[count].partial * UNITS_PER_WORD;
if (argvec[count].reg == 0 || argvec[count].partial != 0
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
|| reg_parm_stack_space > 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
args_size.constant += argvec[count].size.constant;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
FUNCTION_ARG_ADVANCE (args_so_far, mode, (tree) 0, 1);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#ifdef FINAL_REG_PARM_STACK_SPACE
reg_parm_stack_space = FINAL_REG_PARM_STACK_SPACE (args_size.constant,
args_size.var);
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* If this machine requires an external definition for library
functions, write one out. */
assemble_external_libcall (fun);
original_args_size = args_size;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
args_size.constant = (((args_size.constant
+ stack_pointer_delta
+ STACK_BYTES - 1)
/ STACK_BYTES
* STACK_BYTES)
- stack_pointer_delta);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
args_size.constant = MAX (args_size.constant,
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
reg_parm_stack_space);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#ifndef OUTGOING_REG_PARM_STACK_SPACE
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
args_size.constant -= reg_parm_stack_space;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#endif
if (args_size.constant > current_function_outgoing_args_size)
current_function_outgoing_args_size = args_size.constant;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (ACCUMULATE_OUTGOING_ARGS)
{
/* Since the stack pointer will never be pushed, it is possible for
the evaluation of a parm to clobber something we have already
written to the stack. Since most function calls on RISC machines
do not use the stack, this is uncommon, but must work correctly.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Therefore, we save any area of the stack that was already written
and that we are using. Here we set up to do this by making a new
stack usage map from the old one.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Another approach might be to try to reorder the argument
evaluations to avoid this conflicting stack usage. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
needed = args_size.constant;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#ifndef OUTGOING_REG_PARM_STACK_SPACE
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Since we will be writing into the entire argument area, the
map must be allocated for its entire size, not just the part that
is the responsibility of the caller. */
needed += reg_parm_stack_space;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
#ifdef ARGS_GROW_DOWNWARD
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
highest_outgoing_arg_in_use = MAX (initial_highest_arg_in_use,
needed + 1);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
highest_outgoing_arg_in_use = MAX (initial_highest_arg_in_use,
needed);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
stack_usage_map = (char *) alloca (highest_outgoing_arg_in_use);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (initial_highest_arg_in_use)
memcpy (stack_usage_map, initial_stack_usage_map,
initial_highest_arg_in_use);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (initial_highest_arg_in_use != highest_outgoing_arg_in_use)
memset (&stack_usage_map[initial_highest_arg_in_use], 0,
highest_outgoing_arg_in_use - initial_highest_arg_in_use);
needed = 0;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* We must be careful to use virtual regs before they're instantiated,
and real regs afterwards. Loop optimization, for example, can create
new libcalls after we've instantiated the virtual regs, and if we
use virtuals anyway, they won't match the rtl patterns. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (virtuals_instantiated)
argblock = plus_constant (stack_pointer_rtx, STACK_POINTER_OFFSET);
else
argblock = virtual_outgoing_args_rtx;
}
else
{
if (!PUSH_ARGS)
argblock = push_block (GEN_INT (args_size.constant), 0, 0);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* If we push args individually in reverse order, perform stack alignment
before the first push (the last arg). */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (argblock == 0 && PUSH_ARGS_REVERSED)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
anti_adjust_stack (GEN_INT (args_size.constant
- original_args_size.constant));
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (PUSH_ARGS_REVERSED)
{
inc = -1;
argnum = nargs - 1;
}
else
{
inc = 1;
argnum = 0;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef REG_PARM_STACK_SPACE
if (ACCUMULATE_OUTGOING_ARGS)
{
/* The argument list is the property of the called routine and it
may clobber it. If the fixed area has been used for previous
parameters, we must save and restore it.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Here we compute the boundary of the that needs to be saved, if any. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#ifdef ARGS_GROW_DOWNWARD
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (count = 0; count < reg_parm_stack_space + 1; count++)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (count = 0; count < reg_parm_stack_space; count++)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
{
if (count >= highest_outgoing_arg_in_use
|| stack_usage_map[count] == 0)
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (low_to_save == -1)
low_to_save = count;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
high_to_save = count;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (low_to_save >= 0)
{
int num_to_save = high_to_save - low_to_save + 1;
enum machine_mode save_mode
= mode_for_size (num_to_save * BITS_PER_UNIT, MODE_INT, 1);
rtx stack_area;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If we don't have the required alignment, must do this in BLKmode. */
if ((low_to_save & (MIN (GET_MODE_SIZE (save_mode),
BIGGEST_ALIGNMENT / UNITS_PER_WORD) - 1)))
save_mode = BLKmode;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#ifdef ARGS_GROW_DOWNWARD
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
stack_area = gen_rtx_MEM (save_mode,
memory_address (save_mode,
plus_constant (argblock,
-high_to_save)));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
stack_area = gen_rtx_MEM (save_mode,
memory_address (save_mode,
plus_constant (argblock,
low_to_save)));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (save_mode == BLKmode)
{
save_area = assign_stack_temp (BLKmode, num_to_save, 0);
set_mem_align (save_area, PARM_BOUNDARY);
emit_block_move (validize_mem (save_area), stack_area,
GEN_INT (num_to_save));
}
else
{
save_area = gen_reg_rtx (save_mode);
emit_move_insn (save_area, stack_area);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
}
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Push the args that need to be pushed. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* ARGNUM indexes the ARGVEC array in the order in which the arguments
are to be pushed. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
for (count = 0; count < nargs; count++, argnum += inc)
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
enum machine_mode mode = argvec[argnum].mode;
rtx val = argvec[argnum].value;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rtx reg = argvec[argnum].reg;
int partial = argvec[argnum].partial;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int lower_bound = 0, upper_bound = 0, i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (! (reg != 0 && partial == 0))
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (ACCUMULATE_OUTGOING_ARGS)
{
/* If this is being stored into a pre-allocated, fixed-size,
stack area, save any previous data at that location. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#ifdef ARGS_GROW_DOWNWARD
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* stack_slot is negative, but we want to index stack_usage_map
with positive values. */
upper_bound = -argvec[argnum].offset.constant + 1;
lower_bound = upper_bound - argvec[argnum].size.constant;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
lower_bound = argvec[argnum].offset.constant;
upper_bound = lower_bound + argvec[argnum].size.constant;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = lower_bound; i < upper_bound; i++)
if (stack_usage_map[i]
/* Don't store things in the fixed argument area at this
point; it has already been saved. */
&& i > reg_parm_stack_space)
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (i != upper_bound)
{
/* We need to make a save area. See what mode we can make
it. */
enum machine_mode save_mode
= mode_for_size (argvec[argnum].size.constant
* BITS_PER_UNIT,
MODE_INT, 1);
rtx stack_area
= gen_rtx_MEM
(save_mode,
memory_address
(save_mode,
plus_constant (argblock,
argvec[argnum].offset.constant)));
argvec[argnum].save_area = gen_reg_rtx (save_mode);
emit_move_insn (argvec[argnum].save_area, stack_area);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
emit_push_insn (val, mode, NULL_TREE, NULL_RTX, 0, partial, reg, 0,
argblock, GEN_INT (argvec[argnum].offset.constant),
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
reg_parm_stack_space, ARGS_SIZE_RTX (alignment_pad));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Now mark the segment we just used. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (ACCUMULATE_OUTGOING_ARGS)
for (i = lower_bound; i < upper_bound; i++)
stack_usage_map[i] = 1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
NO_DEFER_POP;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
/* If we pushed args in forward order, perform stack alignment
after pushing the last arg. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (argblock == 0 && !PUSH_ARGS_REVERSED)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
anti_adjust_stack (GEN_INT (args_size.constant
- original_args_size.constant));
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (PUSH_ARGS_REVERSED)
argnum = nargs - 1;
else
argnum = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
fun = prepare_call_address (fun, NULL_TREE, &call_fusage, 0, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Now load any reg parms into their regs. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* ARGNUM indexes the ARGVEC array in the order in which the arguments
are to be pushed. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
for (count = 0; count < nargs; count++, argnum += inc)
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx val = argvec[argnum].value;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rtx reg = argvec[argnum].reg;
int partial = argvec[argnum].partial;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Handle calls that pass values in multiple non-contiguous
locations. The PA64 has examples of this for library calls. */
if (reg != 0 && GET_CODE (reg) == PARALLEL)
emit_group_load (reg, val, GET_MODE_SIZE (GET_MODE (val)));
else if (reg != 0 && partial == 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
emit_move_insn (reg, val);
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
NO_DEFER_POP;
}
/* Any regs containing parms remain in use through the call. */
for (count = 0; count < nargs; count++)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
{
rtx reg = argvec[count].reg;
if (reg != 0 && GET_CODE (reg) == PARALLEL)
use_group_regs (&call_fusage, reg);
else if (reg != 0)
use_reg (&call_fusage, reg);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Pass the function the address in which to return a structure value. */
if (mem_value != 0 && struct_value_rtx != 0 && ! pcc_struct_value)
{
emit_move_insn (struct_value_rtx,
force_reg (Pmode,
force_operand (XEXP (mem_value, 0),
NULL_RTX)));
if (GET_CODE (struct_value_rtx) == REG)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
use_reg (&call_fusage, struct_value_rtx);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
/* Don't allow popping to be deferred, since then
cse'ing of library calls could delete a call and leave the pop. */
NO_DEFER_POP;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
valreg = (mem_value == 0 && outmode != VOIDmode
? hard_libcall_value (outmode) : NULL_RTX);
/* Stack must be properly aligned now. */
if (stack_pointer_delta & (PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT - 1))
abort ();
before_call = get_last_insn ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* We pass the old value of inhibit_defer_pop + 1 to emit_call_1, which
will set inhibit_defer_pop to that value. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* The return type is needed to decide how many bytes the function pops.
Signedness plays no role in that, so for simplicity, we pretend it's
always signed. We also assume that the list of arguments passed has
no impact, so we pretend it is unknown. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_call_1 (fun,
get_identifier (XSTR (orgfun, 0)),
build_function_type (outmode == VOIDmode ? void_type_node
: type_for_mode (outmode, 0), NULL_TREE),
original_args_size.constant, args_size.constant,
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct_value_size,
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
FUNCTION_ARG (args_so_far, VOIDmode, void_type_node, 1),
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
valreg,
old_inhibit_defer_pop + 1, call_fusage, flags);
/* For calls to `setjmp', etc., inform flow.c it should complain
if nonvolatile values are live. For functions that cannot return,
inform flow that control does not fall through. */
if (flags & (ECF_NORETURN | ECF_LONGJMP))
{
/* The barrier note must be emitted
immediately after the CALL_INSN. Some ports emit more than
just a CALL_INSN above, so we must search for it here. */
rtx last = get_last_insn ();
while (GET_CODE (last) != CALL_INSN)
{
last = PREV_INSN (last);
/* There was no CALL_INSN? */
if (last == before_call)
abort ();
}
emit_barrier_after (last);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Now restore inhibit_defer_pop to its actual original value. */
OK_DEFER_POP;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If call is cse'able, make appropriate pair of reg-notes around it.
Test valreg so we don't crash; may safely ignore `const'
if return type is void. Disable for PARALLEL return values, because
we have no way to move such values into a pseudo register. */
if (flags & ECF_LIBCALL_BLOCK)
{
rtx insns;
if (valreg == 0 || GET_CODE (valreg) == PARALLEL)
{
insns = get_insns ();
end_sequence ();
emit_insns (insns);
}
else
{
rtx note = 0;
rtx temp = gen_reg_rtx (GET_MODE (valreg));
int i;
/* Construct an "equal form" for the value which mentions all the
arguments in order as well as the function name. */
for (i = 0; i < nargs; i++)
note = gen_rtx_EXPR_LIST (VOIDmode, argvec[i].value, note);
note = gen_rtx_EXPR_LIST (VOIDmode, fun, note);
insns = get_insns ();
end_sequence ();
if (flags & ECF_PURE)
note = gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_USE (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))),
note);
emit_libcall_block (insns, temp, valreg, note);
valreg = temp;
}
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
pop_temp_slots ();
/* Copy the value to the right place. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (outmode != VOIDmode && retval)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
if (mem_value)
{
if (value == 0)
value = mem_value;
if (value != mem_value)
emit_move_insn (value, mem_value);
}
else if (value != 0)
emit_move_insn (value, hard_libcall_value (outmode));
else
value = hard_libcall_value (outmode);
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (ACCUMULATE_OUTGOING_ARGS)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#ifdef REG_PARM_STACK_SPACE
if (save_area)
{
enum machine_mode save_mode = GET_MODE (save_area);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#ifdef ARGS_GROW_DOWNWARD
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx stack_area
= gen_rtx_MEM (save_mode,
memory_address (save_mode,
plus_constant (argblock,
- high_to_save)));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx stack_area
= gen_rtx_MEM (save_mode,
memory_address (save_mode,
plus_constant (argblock, low_to_save)));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
set_mem_align (stack_area, PARM_BOUNDARY);
if (save_mode != BLKmode)
emit_move_insn (stack_area, save_area);
else
emit_block_move (stack_area, validize_mem (save_area),
GEN_INT (high_to_save - low_to_save + 1));
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If we saved any argument areas, restore them. */
for (count = 0; count < nargs; count++)
if (argvec[count].save_area)
{
enum machine_mode save_mode = GET_MODE (argvec[count].save_area);
rtx stack_area
= gen_rtx_MEM (save_mode,
memory_address
(save_mode,
plus_constant (argblock,
argvec[count].offset.constant)));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
emit_move_insn (stack_area, argvec[count].save_area);
}
highest_outgoing_arg_in_use = initial_highest_arg_in_use;
stack_usage_map = initial_stack_usage_map;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
return value;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
}
/* Output a library call to function FUN (a SYMBOL_REF rtx)
(emitting the queue unless NO_QUEUE is nonzero),
for a value of mode OUTMODE,
with NARGS different arguments, passed as alternating rtx values
and machine_modes to convert them to.
The rtx values should have been passed through protect_from_queue already.
FN_TYPE should be LCT_NORMAL for `normal' calls, LCT_CONST for `const'
calls, LCT_PURE for `pure' calls, LCT_CONST_MAKE_BLOCK for `const' calls
which should be enclosed in REG_LIBCALL/REG_RETVAL notes,
LCT_PURE_MAKE_BLOCK for `purep' calls which should be enclosed in
REG_LIBCALL/REG_RETVAL notes with extra (use (memory (scratch)),
or other LCT_ value for other types of library calls. */
void
emit_library_call VPARAMS((rtx orgfun, enum libcall_type fn_type,
enum machine_mode outmode, int nargs, ...))
{
VA_OPEN (p, nargs);
VA_FIXEDARG (p, rtx, orgfun);
VA_FIXEDARG (p, int, fn_type);
VA_FIXEDARG (p, enum machine_mode, outmode);
VA_FIXEDARG (p, int, nargs);
emit_library_call_value_1 (0, orgfun, NULL_RTX, fn_type, outmode, nargs, p);
VA_CLOSE (p);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Like emit_library_call except that an extra argument, VALUE,
comes second and says where to store the result.
(If VALUE is zero, this function chooses a convenient way
to return the value.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
This function returns an rtx for where the value is to be found.
If VALUE is nonzero, VALUE is returned. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx
emit_library_call_value VPARAMS((rtx orgfun, rtx value,
enum libcall_type fn_type,
enum machine_mode outmode, int nargs, ...))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
rtx result;
VA_OPEN (p, nargs);
VA_FIXEDARG (p, rtx, orgfun);
VA_FIXEDARG (p, rtx, value);
VA_FIXEDARG (p, int, fn_type);
VA_FIXEDARG (p, enum machine_mode, outmode);
VA_FIXEDARG (p, int, nargs);
result = emit_library_call_value_1 (1, orgfun, value, fn_type, outmode,
nargs, p);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
VA_CLOSE (p);
return result;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
/* Store a single argument for a function call
into the register or memory area where it must be passed.
*ARG describes the argument value and where to pass it.
ARGBLOCK is the address of the stack-block for all the arguments,
or 0 on a machine where arguments are pushed individually.
MAY_BE_ALLOCA nonzero says this could be a call to `alloca'
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
so must be careful about how the stack is used.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
VARIABLE_SIZE nonzero says that this was a variable-sized outgoing
argument stack. This is used if ACCUMULATE_OUTGOING_ARGS to indicate
that we need not worry about saving and restoring the stack.
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
FNDECL is the declaration of the function we are calling.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Return non-zero if this arg should cause sibcall failure,
zero otherwise. */
static int
store_one_arg (arg, argblock, flags, variable_size, reg_parm_stack_space)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
struct arg_data *arg;
rtx argblock;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int flags;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int variable_size ATTRIBUTE_UNUSED;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
int reg_parm_stack_space;
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
tree pval = arg->tree_value;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rtx reg = 0;
int partial = 0;
int used = 0;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int i, lower_bound = 0, upper_bound = 0;
int sibcall_failure = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (TREE_CODE (pval) == ERROR_MARK)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Push a new temporary level for any temporaries we make for
this argument. */
push_temp_slots ();
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (ACCUMULATE_OUTGOING_ARGS && !(flags & ECF_SIBCALL))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If this is being stored into a pre-allocated, fixed-size, stack area,
save any previous data at that location. */
if (argblock && ! variable_size && arg->stack)
{
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#ifdef ARGS_GROW_DOWNWARD
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* stack_slot is negative, but we want to index stack_usage_map
with positive values. */
if (GET_CODE (XEXP (arg->stack_slot, 0)) == PLUS)
upper_bound = -INTVAL (XEXP (XEXP (arg->stack_slot, 0), 1)) + 1;
else
upper_bound = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
lower_bound = upper_bound - arg->size.constant;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (GET_CODE (XEXP (arg->stack_slot, 0)) == PLUS)
lower_bound = INTVAL (XEXP (XEXP (arg->stack_slot, 0), 1));
else
lower_bound = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
upper_bound = lower_bound + arg->size.constant;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#endif
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
for (i = lower_bound; i < upper_bound; i++)
if (stack_usage_map[i]
/* Don't store things in the fixed argument area at this point;
it has already been saved. */
&& i > reg_parm_stack_space)
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (i != upper_bound)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* We need to make a save area. See what mode we can make it. */
enum machine_mode save_mode
= mode_for_size (arg->size.constant * BITS_PER_UNIT, MODE_INT, 1);
rtx stack_area
= gen_rtx_MEM (save_mode,
memory_address (save_mode,
XEXP (arg->stack_slot, 0)));
if (save_mode == BLKmode)
{
tree ot = TREE_TYPE (arg->tree_value);
tree nt = build_qualified_type (ot, (TYPE_QUALS (ot)
| TYPE_QUAL_CONST));
arg->save_area = assign_temp (nt, 0, 1, 1);
preserve_temp_slots (arg->save_area);
emit_block_move (validize_mem (arg->save_area), stack_area,
expr_size (arg->tree_value));
}
else
{
arg->save_area = gen_reg_rtx (save_mode);
emit_move_insn (arg->save_area, stack_area);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* Now that we have saved any slots that will be overwritten by this
store, mark all slots this store will use. We must do this before
we actually expand the argument since the expansion itself may
trigger library calls which might need to use the same stack slot. */
if (argblock && ! variable_size && arg->stack)
for (i = lower_bound; i < upper_bound; i++)
stack_usage_map[i] = 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* If this isn't going to be placed on both the stack and in registers,
set up the register and number of words. */
if (! arg->pass_on_stack)
reg = arg->reg, partial = arg->partial;
if (reg != 0 && partial == 0)
/* Being passed entirely in a register. We shouldn't be called in
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
this case. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
abort ();
/* If this arg needs special alignment, don't load the registers
here. */
if (arg->n_aligned_regs != 0)
reg = 0;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* If this is being passed partially in a register, we can't evaluate
it directly into its stack slot. Otherwise, we can. */
if (arg->value == 0)
{
/* stack_arg_under_construction is nonzero if a function argument is
being evaluated directly into the outgoing argument list and
expand_call must take special action to preserve the argument list
if it is called recursively.
For scalar function arguments stack_usage_map is sufficient to
determine which stack slots must be saved and restored. Scalar
arguments in general have pass_on_stack == 0.
If this argument is initialized by a function which takes the
address of the argument (a C++ constructor or a C function
returning a BLKmode structure), then stack_usage_map is
insufficient and expand_call must push the stack around the
function call. Such arguments have pass_on_stack == 1.
Note that it is always safe to set stack_arg_under_construction,
but this generates suboptimal code if set when not needed. */
if (arg->pass_on_stack)
stack_arg_under_construction++;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
arg->value = expand_expr (pval,
(partial
|| TYPE_MODE (TREE_TYPE (pval)) != arg->mode)
? NULL_RTX : arg->stack,
VOIDmode, 0);
/* If we are promoting object (or for any other reason) the mode
doesn't agree, convert the mode. */
if (arg->mode != TYPE_MODE (TREE_TYPE (pval)))
arg->value = convert_modes (arg->mode, TYPE_MODE (TREE_TYPE (pval)),
arg->value, arg->unsignedp);
if (arg->pass_on_stack)
stack_arg_under_construction--;
}
/* Don't allow anything left on stack from computation
of argument to alloca. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if (flags & ECF_MAY_BE_ALLOCA)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
do_pending_stack_adjust ();
if (arg->value == arg->stack)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
/* If the value is already in the stack slot, we are done. */
;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else if (arg->mode != BLKmode)
{
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int size;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Argument is a scalar, not entirely passed in registers.
(If part is passed in registers, arg->partial says how much
and emit_push_insn will take care of putting it there.)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Push it, and if its size is less than the
amount of space allocated to it,
also bump stack pointer by the additional space.
Note that in C the default argument promotions
will prevent such mismatches. */
size = GET_MODE_SIZE (arg->mode);
/* Compute how much space the push instruction will push.
On many machines, pushing a byte will advance the stack
pointer by a halfword. */
#ifdef PUSH_ROUNDING
size = PUSH_ROUNDING (size);
#endif
used = size;
/* Compute how much space the argument should get:
round up to a multiple of the alignment for arguments. */
if (none != FUNCTION_ARG_PADDING (arg->mode, TREE_TYPE (pval)))
used = (((size + PARM_BOUNDARY / BITS_PER_UNIT - 1)
/ (PARM_BOUNDARY / BITS_PER_UNIT))
* (PARM_BOUNDARY / BITS_PER_UNIT));
/* This isn't already where we want it on the stack, so put it there.
This can either be done with push or copy insns. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
emit_push_insn (arg->value, arg->mode, TREE_TYPE (pval), NULL_RTX, 0,
partial, reg, used - size, argblock,
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2002-02-01 18:16:02 +00:00
ARGS_SIZE_RTX (arg->offset), reg_parm_stack_space,
ARGS_SIZE_RTX (arg->alignment_pad));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
else
{
/* BLKmode, at least partly to be pushed. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int excess;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rtx size_rtx;
/* Pushing a nonscalar.
If part is passed in registers, PARTIAL says how much
and emit_push_insn will take care of putting it there. */
/* Round its size up to a multiple
of the allocation unit for arguments. */
if (arg->size.var != 0)
{
excess = 0;
size_rtx = ARGS_SIZE_RTX (arg->size);
}
else
{
/* PUSH_ROUNDING has no effect on us, because
emit_push_insn for BLKmode is careful to avoid it. */
excess = (arg->size.constant - int_size_in_bytes (TREE_TYPE (pval))
+ partial * UNITS_PER_WORD);
size_rtx = expr_size (pval);
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
if ((flags & ECF_SIBCALL) && GET_CODE (arg->value) == MEM)
{
/* emit_push_insn might not work properly if arg->value and
argblock + arg->offset areas overlap. */
rtx x = arg->value;
int i = 0;
if (XEXP (x, 0) == current_function_internal_arg_pointer
|| (GET_CODE (XEXP (x, 0)) == PLUS
&& XEXP (XEXP (x, 0), 0) ==
current_function_internal_arg_pointer
&& GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT))
{
if (XEXP (x, 0) != current_function_internal_arg_pointer)
i = INTVAL (XEXP (XEXP (x, 0), 1));
/* expand_call should ensure this */
if (arg->offset.var || GET_CODE (size_rtx) != CONST_INT)
abort ();
if (arg->offset.constant > i)
{
if (arg->offset.constant < i + INTVAL (size_rtx))
sibcall_failure = 1;
}
else if (arg->offset.constant < i)
{
if (i < arg->offset.constant + INTVAL (size_rtx))
sibcall_failure = 1;
}
}
}
/* Special handling is required if part of the parameter lies in the
register parameter area. The argument may be copied into the stack
slot using memcpy(), but the original contents of the register
parameter area will be restored after the memcpy() call.
To ensure that the part that lies in the register parameter area
is copied correctly, we emit a separate push for that part. This
push should be small enough to avoid a call to memcpy(). */
#ifndef STACK_PARMS_IN_REG_PARM_AREA
if (arg->reg && arg->pass_on_stack)
#else
if (1)
#endif
{
if (arg->offset.constant < reg_parm_stack_space && arg->offset.var)
error ("variable offset is passed partially in stack and in reg");
else if (arg->offset.constant < reg_parm_stack_space && arg->size.var)
error ("variable size is passed partially in stack and in reg");
else if (arg->offset.constant < reg_parm_stack_space
&& ((arg->offset.constant + arg->size.constant)
> reg_parm_stack_space))
{
rtx size_rtx1 = GEN_INT (reg_parm_stack_space - arg->offset.constant);
emit_push_insn (arg->value, arg->mode, TREE_TYPE (pval), size_rtx1,
TYPE_ALIGN (TREE_TYPE (pval)), partial, reg,
excess, argblock, ARGS_SIZE_RTX (arg->offset),
reg_parm_stack_space,
ARGS_SIZE_RTX (arg->alignment_pad));
}
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
emit_push_insn (arg->value, arg->mode, TREE_TYPE (pval), size_rtx,
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
TYPE_ALIGN (TREE_TYPE (pval)), partial, reg, excess,
argblock, ARGS_SIZE_RTX (arg->offset),
reg_parm_stack_space,
ARGS_SIZE_RTX (arg->alignment_pad));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
/* Unless this is a partially-in-register argument, the argument is now
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
in the stack.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
??? Note that this can change arg->value from arg->stack to
arg->stack_slot and it matters when they are not the same.
It isn't totally clear that this is correct in all cases. */
if (partial == 0)
arg->value = arg->stack_slot;
/* Once we have pushed something, pops can't safely
be deferred during the rest of the arguments. */
NO_DEFER_POP;
/* ANSI doesn't require a sequence point here,
but PCC has one, so this will avoid some problems. */
emit_queue ();
/* Free any temporary slots made in processing this argument. Show
that we might have taken the address of something and pushed that
as an operand. */
preserve_temp_slots (NULL_RTX);
free_temp_slots ();
pop_temp_slots ();
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
return sibcall_failure;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
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