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2343 lines
86 KiB
C
2343 lines
86 KiB
C
/* Register Transfer Language (RTL) definitions for GCC
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Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
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1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifndef GCC_RTL_H
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#define GCC_RTL_H
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struct function;
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#include "machmode.h"
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#include "input.h"
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#undef FFS /* Some systems predefine this symbol; don't let it interfere. */
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#undef FLOAT /* Likewise. */
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#undef ABS /* Likewise. */
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#undef PC /* Likewise. */
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/* Value used by some passes to "recognize" noop moves as valid
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instructions. */
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#define NOOP_MOVE_INSN_CODE INT_MAX
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/* Register Transfer Language EXPRESSIONS CODES */
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#define RTX_CODE enum rtx_code
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enum rtx_code {
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#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
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#include "rtl.def" /* rtl expressions are documented here */
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#undef DEF_RTL_EXPR
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LAST_AND_UNUSED_RTX_CODE}; /* A convenient way to get a value for
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NUM_RTX_CODE.
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Assumes default enum value assignment. */
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#define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE)
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/* The cast here, saves many elsewhere. */
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extern const unsigned char rtx_length[NUM_RTX_CODE];
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#define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)])
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extern const char * const rtx_name[NUM_RTX_CODE];
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#define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)])
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extern const char * const rtx_format[NUM_RTX_CODE];
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#define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)])
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extern const char rtx_class[NUM_RTX_CODE];
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#define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)])
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extern const unsigned char rtx_size[NUM_RTX_CODE];
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extern const unsigned char rtx_next[NUM_RTX_CODE];
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/* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label
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relative to which the offsets are calculated, as explained in rtl.def. */
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typedef struct
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{
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/* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */
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unsigned min_align: 8;
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/* Flags: */
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unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */
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unsigned min_after_vec: 1; /* minimum address target label is
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after the ADDR_DIFF_VEC. */
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unsigned max_after_vec: 1; /* maximum address target label is
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after the ADDR_DIFF_VEC. */
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unsigned min_after_base: 1; /* minimum address target label is
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after BASE. */
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unsigned max_after_base: 1; /* maximum address target label is
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after BASE. */
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/* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */
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unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */
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unsigned : 2;
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unsigned scale : 8;
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} addr_diff_vec_flags;
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/* Structure used to describe the attributes of a MEM. These are hashed
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so MEMs that the same attributes share a data structure. This means
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they cannot be modified in place. If any element is nonzero, it means
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the value of the corresponding attribute is unknown. */
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/* ALIGN and SIZE are the alignment and size of the MEM itself,
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while EXPR can describe a larger underlying object, which might have a
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stricter alignment; OFFSET is the offset of the MEM within that object. */
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typedef struct mem_attrs GTY(())
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{
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HOST_WIDE_INT alias; /* Memory alias set. */
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tree expr; /* expr corresponding to MEM. */
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rtx offset; /* Offset from start of DECL, as CONST_INT. */
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rtx size; /* Size in bytes, as a CONST_INT. */
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unsigned int align; /* Alignment of MEM in bits. */
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} mem_attrs;
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/* Structure used to describe the attributes of a REG in similar way as
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mem_attrs does for MEM above. */
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typedef struct reg_attrs GTY(())
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{
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tree decl; /* decl corresponding to REG. */
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HOST_WIDE_INT offset; /* Offset from start of DECL. */
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} reg_attrs;
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/* Common union for an element of an rtx. */
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union rtunion_def
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{
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int rtint;
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unsigned int rtuint;
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const char *rtstr;
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rtx rtx;
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rtvec rtvec;
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enum machine_mode rttype;
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addr_diff_vec_flags rt_addr_diff_vec_flags;
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struct cselib_val_struct *rt_cselib;
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struct bitmap_head_def *rtbit;
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tree rttree;
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struct basic_block_def *bb;
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mem_attrs *rtmem;
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reg_attrs *rtreg;
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};
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typedef union rtunion_def rtunion;
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/* RTL expression ("rtx"). */
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struct rtx_def GTY((chain_next ("RTX_NEXT (&%h)"),
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chain_prev ("RTX_PREV (&%h)")))
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{
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/* The kind of expression this is. */
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ENUM_BITFIELD(rtx_code) code: 16;
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/* The kind of value the expression has. */
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ENUM_BITFIELD(machine_mode) mode : 8;
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/* 1 in a MEM if we should keep the alias set for this mem unchanged
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when we access a component.
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1 in a CALL_INSN if it is a sibling call.
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1 in a SET that is for a return.
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In a CODE_LABEL, part of the two-bit alternate entry field. */
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unsigned int jump : 1;
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/* In a CODE_LABEL, part of the two-bit alternate entry field.
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1 in a MEM if it cannot trap. */
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unsigned int call : 1;
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/* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere.
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1 in a SUBREG if it references an unsigned object whose mode has been
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from a promoted to a wider mode.
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1 in a SYMBOL_REF if it addresses something in the per-function
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constants pool.
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1 in a CALL_INSN, NOTE, or EXPR_LIST for a const or pure call.
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1 in a JUMP_INSN, CALL_INSN, or INSN of an annulling branch. */
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unsigned int unchanging : 1;
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/* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
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1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
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if it has been deleted.
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1 in a REG expression if corresponds to a variable declared by the user,
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0 for an internally generated temporary.
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1 in a SUBREG with a negative value.
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1 in a LABEL_REF or in a REG_LABEL note for a non-local label.
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In a SYMBOL_REF, this flag is used for machine-specific purposes. */
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unsigned int volatil : 1;
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/* 1 in a MEM referring to a field of an aggregate.
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0 if the MEM was a variable or the result of a * operator in C;
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1 if it was the result of a . or -> operator (on a struct) in C.
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1 in a REG if the register is used only in exit code a loop.
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1 in a SUBREG expression if was generated from a variable with a
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promoted mode.
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1 in a CODE_LABEL if the label is used for nonlocal gotos
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and must not be deleted even if its count is zero.
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1 in a LABEL_REF if this is a reference to a label outside the
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current loop.
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1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled
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together with the preceding insn. Valid only within sched.
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1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and
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from the target of a branch. Valid from reorg until end of compilation;
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cleared before used.
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1 in an INSN, JUMP_INSN or CALL_INSN or related rtx if this insn is
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dead code. Valid only during dead-code elimination phase; cleared
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before use. */
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unsigned int in_struct : 1;
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/* At the end of RTL generation, 1 if this rtx is used. This is used for
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copying shared structure. See `unshare_all_rtl'.
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In a REG, this is not needed for that purpose, and used instead
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in `leaf_renumber_regs_insn'.
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1 in a SYMBOL_REF, means that emit_library_call
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has used it as the function. */
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unsigned int used : 1;
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/* Nonzero if this rtx came from procedure integration.
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1 in a REG or PARALLEL means this rtx refers to the return value
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of the current function.
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1 in a SYMBOL_REF if the symbol is weak. */
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unsigned integrated : 1;
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/* 1 in an INSN or a SET if this rtx is related to the call frame,
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either changing how we compute the frame address or saving and
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restoring registers in the prologue and epilogue.
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1 in a MEM if the MEM refers to a scalar, rather than a member of
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an aggregate.
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1 in a REG if the register is a pointer.
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1 in a SYMBOL_REF if it addresses something in the per-function
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constant string pool. */
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unsigned frame_related : 1;
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/* The first element of the operands of this rtx.
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The number of operands and their types are controlled
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by the `code' field, according to rtl.def. */
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union u {
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rtunion fld[1];
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HOST_WIDE_INT hwint[1];
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} GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u;
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};
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/* The size in bytes of an rtx header (code, mode and flags). */
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#define RTX_HDR_SIZE offsetof (struct rtx_def, u)
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/* The size in bytes of an rtx with code CODE. */
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#define RTX_SIZE(CODE) rtx_size[CODE]
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#define NULL_RTX (rtx) 0
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/* The "next" and "previous" RTX, relative to this one. */
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#define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \
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: *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)]))
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/* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed.
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*/
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#define RTX_PREV(X) ((GET_CODE (X) == INSN \
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|| GET_CODE (X) == CALL_INSN \
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|| GET_CODE (X) == JUMP_INSN \
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|| GET_CODE (X) == NOTE \
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|| GET_CODE (X) == BARRIER \
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|| GET_CODE (X) == CODE_LABEL) \
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&& PREV_INSN (X) != NULL \
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&& NEXT_INSN (PREV_INSN (X)) == X \
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? PREV_INSN (X) : NULL)
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/* Define macros to access the `code' field of the rtx. */
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#define GET_CODE(RTX) ((enum rtx_code) (RTX)->code)
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#define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE))
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#define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode)
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#define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE))
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/* RTL vector. These appear inside RTX's when there is a need
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for a variable number of things. The principle use is inside
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PARALLEL expressions. */
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struct rtvec_def GTY(()) {
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int num_elem; /* number of elements */
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rtx GTY ((length ("%h.num_elem"))) elem[1];
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};
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#define NULL_RTVEC (rtvec) 0
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#define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem)
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#define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM))
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/* Predicate yielding nonzero iff X is an rtl for a register. */
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#define REG_P(X) (GET_CODE (X) == REG)
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/* Predicate yielding nonzero iff X is a label insn. */
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#define LABEL_P(X) (GET_CODE (X) == CODE_LABEL)
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/* Predicate yielding nonzero iff X is a jump insn. */
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#define JUMP_P(X) (GET_CODE (X) == JUMP_INSN)
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/* Predicate yielding nonzero iff X is a note insn. */
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#define NOTE_P(X) (GET_CODE (X) == NOTE)
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/* Predicate yielding nonzero iff X is a barrier insn. */
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#define BARRIER_P(X) (GET_CODE (X) == BARRIER)
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/* Predicate yielding nonzero iff X is a data for a jump table. */
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#define JUMP_TABLE_DATA_P(INSN) \
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(JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \
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GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC))
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/* 1 if X is a constant value that is an integer. */
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#define CONSTANT_P(X) \
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(GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \
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|| GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST_DOUBLE \
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|| GET_CODE (X) == CONST || GET_CODE (X) == HIGH \
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|| GET_CODE (X) == CONST_VECTOR \
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|| GET_CODE (X) == CONSTANT_P_RTX)
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/* General accessor macros for accessing the fields of an rtx. */
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#if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
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/* The bit with a star outside the statement expr and an & inside is
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so that N can be evaluated only once. */
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#define RTL_CHECK1(RTX, N, C1) __extension__ \
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(*({ rtx const _rtx = (RTX); const int _n = (N); \
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const enum rtx_code _code = GET_CODE (_rtx); \
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if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
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rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
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__FUNCTION__); \
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if (GET_RTX_FORMAT(_code)[_n] != C1) \
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rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \
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__FUNCTION__); \
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&_rtx->u.fld[_n]; }))
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#define RTL_CHECK2(RTX, N, C1, C2) __extension__ \
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(*({ rtx const _rtx = (RTX); const int _n = (N); \
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const enum rtx_code _code = GET_CODE (_rtx); \
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if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
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rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
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__FUNCTION__); \
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if (GET_RTX_FORMAT(_code)[_n] != C1 \
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&& GET_RTX_FORMAT(_code)[_n] != C2) \
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rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \
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__FUNCTION__); \
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&_rtx->u.fld[_n]; }))
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#define RTL_CHECKC1(RTX, N, C) __extension__ \
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(*({ rtx const _rtx = (RTX); const int _n = (N); \
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if (GET_CODE (_rtx) != (C)) \
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rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
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__FUNCTION__); \
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&_rtx->u.fld[_n]; }))
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#define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \
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(*({ rtx const _rtx = (RTX); const int _n = (N); \
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const enum rtx_code _code = GET_CODE (_rtx); \
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if (_code != (C1) && _code != (C2)) \
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rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \
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__FUNCTION__); \
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&_rtx->u.fld[_n]; }))
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#define RTVEC_ELT(RTVEC, I) __extension__ \
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(*({ rtvec const _rtvec = (RTVEC); const int _i = (I); \
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if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \
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rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \
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__FUNCTION__); \
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&_rtvec->elem[_i]; }))
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#define XWINT(RTX, N) __extension__ \
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(*({ rtx const _rtx = (RTX); const int _n = (N); \
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const enum rtx_code _code = GET_CODE (_rtx); \
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if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \
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rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \
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__FUNCTION__); \
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if (GET_RTX_FORMAT(_code)[_n] != 'w') \
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rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \
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__FUNCTION__); \
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&_rtx->u.hwint[_n]; }))
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|
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#define XCWINT(RTX, N, C) __extension__ \
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(*({ rtx const _rtx = (RTX); \
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||
if (GET_CODE (_rtx) != (C)) \
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rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \
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||
__FUNCTION__); \
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||
&_rtx->u.hwint[N]; }))
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||
|
||
extern void rtl_check_failed_bounds (rtx, int, const char *, int,
|
||
const char *)
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ATTRIBUTE_NORETURN;
|
||
extern void rtl_check_failed_type1 (rtx, int, int, const char *, int,
|
||
const char *)
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||
ATTRIBUTE_NORETURN;
|
||
extern void rtl_check_failed_type2 (rtx, int, int, int, const char *,
|
||
int, const char *)
|
||
ATTRIBUTE_NORETURN;
|
||
extern void rtl_check_failed_code1 (rtx, enum rtx_code, const char *,
|
||
int, const char *)
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||
ATTRIBUTE_NORETURN;
|
||
extern void rtl_check_failed_code2 (rtx, enum rtx_code, enum rtx_code,
|
||
const char *, int, const char *)
|
||
ATTRIBUTE_NORETURN;
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||
extern void rtvec_check_failed_bounds (rtvec, int, const char *, int,
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||
const char *)
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||
ATTRIBUTE_NORETURN;
|
||
|
||
#else /* not ENABLE_RTL_CHECKING */
|
||
|
||
#define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N])
|
||
#define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N])
|
||
#define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N])
|
||
#define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N])
|
||
#define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I])
|
||
#define XWINT(RTX, N) ((RTX)->u.hwint[N])
|
||
#define XCWINT(RTX, N, C) ((RTX)->u.hwint[N])
|
||
|
||
#endif
|
||
|
||
/* General accessor macros for accessing the flags of an rtx. */
|
||
|
||
/* Access an individual rtx flag, with no checking of any kind. */
|
||
#define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG)
|
||
|
||
#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007)
|
||
#define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \
|
||
({ rtx const _rtx = (RTX); \
|
||
if (GET_CODE(_rtx) != C1) \
|
||
rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
|
||
__FUNCTION__); \
|
||
_rtx; })
|
||
|
||
#define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \
|
||
({ rtx const _rtx = (RTX); \
|
||
if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2) \
|
||
rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
|
||
__FUNCTION__); \
|
||
_rtx; })
|
||
|
||
#define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \
|
||
({ rtx const _rtx = (RTX); \
|
||
if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
|
||
&& GET_CODE(_rtx) != C3) \
|
||
rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
|
||
__FUNCTION__); \
|
||
_rtx; })
|
||
|
||
#define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \
|
||
({ rtx const _rtx = (RTX); \
|
||
if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
|
||
&& GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4) \
|
||
rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
|
||
__FUNCTION__); \
|
||
_rtx; })
|
||
|
||
#define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \
|
||
({ rtx const _rtx = (RTX); \
|
||
if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
|
||
&& GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
|
||
&& GET_CODE(_rtx) != C5) \
|
||
rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
|
||
__FUNCTION__); \
|
||
_rtx; })
|
||
|
||
#define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \
|
||
__extension__ \
|
||
({ rtx const _rtx = (RTX); \
|
||
if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
|
||
&& GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
|
||
&& GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6) \
|
||
rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \
|
||
__FUNCTION__); \
|
||
_rtx; })
|
||
|
||
#define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \
|
||
__extension__ \
|
||
({ rtx const _rtx = (RTX); \
|
||
if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
|
||
&& GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
|
||
&& GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \
|
||
&& GET_CODE(_rtx) != C7) \
|
||
rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
|
||
__FUNCTION__); \
|
||
_rtx; })
|
||
|
||
#define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) \
|
||
__extension__ \
|
||
({ rtx const _rtx = (RTX); \
|
||
if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \
|
||
&& GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \
|
||
&& GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \
|
||
&& GET_CODE(_rtx) != C7 && GET_CODE(_rtx) != C8) \
|
||
rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \
|
||
__FUNCTION__); \
|
||
_rtx; })
|
||
|
||
extern void rtl_check_failed_flag (const char *, rtx, const char *,
|
||
int, const char *)
|
||
ATTRIBUTE_NORETURN
|
||
;
|
||
|
||
#else /* not ENABLE_RTL_FLAG_CHECKING */
|
||
|
||
#define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX)
|
||
#define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX)
|
||
#define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX)
|
||
#define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX)
|
||
#define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX)
|
||
#define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX)
|
||
#define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX)
|
||
#define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) (RTX)
|
||
#endif
|
||
|
||
#define CLEAR_RTX_FLAGS(RTX) \
|
||
do { \
|
||
rtx const _rtx = (RTX); \
|
||
_rtx->call = 0; \
|
||
_rtx->frame_related = 0; \
|
||
_rtx->in_struct = 0; \
|
||
_rtx->integrated = 0; \
|
||
_rtx->jump = 0; \
|
||
_rtx->unchanging = 0; \
|
||
_rtx->used = 0; \
|
||
_rtx->volatil = 0; \
|
||
} while (0)
|
||
|
||
#define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rtint)
|
||
#define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rtstr)
|
||
#define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rtx)
|
||
#define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rtvec)
|
||
#define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rttype)
|
||
#define XBITMAP(RTX, N) (RTL_CHECK1 (RTX, N, 'b').rtbit)
|
||
#define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rttree)
|
||
#define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').bb)
|
||
#define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rtstr)
|
||
|
||
#define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M)
|
||
#define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N))
|
||
|
||
/* These are like XINT, etc. except that they expect a '0' field instead
|
||
of the normal type code. */
|
||
|
||
#define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtint)
|
||
#define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtuint)
|
||
#define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtstr)
|
||
#define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtx)
|
||
#define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtvec)
|
||
#define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rttype)
|
||
#define X0BITMAP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rtbit)
|
||
#define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rttree)
|
||
#define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').bb)
|
||
#define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags)
|
||
#define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib)
|
||
#define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rtmem)
|
||
#define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rtreg)
|
||
|
||
/* Access a '0' field with any type. */
|
||
#define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0')
|
||
|
||
#define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtint)
|
||
#define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtuint)
|
||
#define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtstr)
|
||
#define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtx)
|
||
#define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtvec)
|
||
#define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rttype)
|
||
#define XCBITMAP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rtbit)
|
||
#define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rttree)
|
||
#define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).bb)
|
||
#define XCADVFLAGS(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_addr_diff_vec_flags)
|
||
#define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib)
|
||
|
||
#define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M)
|
||
#define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C))
|
||
|
||
#define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rtx)
|
||
|
||
/* ACCESS MACROS for particular fields of insns. */
|
||
|
||
/* Determines whether X is an insn. */
|
||
#define INSN_P(X) (GET_RTX_CLASS (GET_CODE(X)) == 'i')
|
||
|
||
/* Holds a unique number for each insn.
|
||
These are not necessarily sequentially increasing. */
|
||
#define INSN_UID(INSN) XINT (INSN, 0)
|
||
|
||
/* Chain insns together in sequence. */
|
||
#define PREV_INSN(INSN) XEXP (INSN, 1)
|
||
#define NEXT_INSN(INSN) XEXP (INSN, 2)
|
||
|
||
#define BLOCK_FOR_INSN(INSN) XBBDEF (INSN, 3)
|
||
#define INSN_LOCATOR(INSN) XINT (INSN, 4)
|
||
/* The body of an insn. */
|
||
#define PATTERN(INSN) XEXP (INSN, 5)
|
||
|
||
/* Code number of instruction, from when it was recognized.
|
||
-1 means this instruction has not been recognized yet. */
|
||
#define INSN_CODE(INSN) XINT (INSN, 6)
|
||
|
||
/* Set up in flow.c; empty before then.
|
||
Holds a chain of INSN_LIST rtx's whose first operands point at
|
||
previous insns with direct data-flow connections to this one.
|
||
That means that those insns set variables whose next use is in this insn.
|
||
They are always in the same basic block as this insn. */
|
||
#define LOG_LINKS(INSN) XEXP(INSN, 7)
|
||
|
||
#define RTX_INTEGRATED_P(RTX) \
|
||
(RTL_FLAG_CHECK8("RTX_INTEGRATED_P", (RTX), INSN, CALL_INSN, \
|
||
JUMP_INSN, INSN_LIST, BARRIER, CODE_LABEL, CONST, \
|
||
NOTE)->integrated)
|
||
#define RTX_UNCHANGING_P(RTX) \
|
||
(RTL_FLAG_CHECK3("RTX_UNCHANGING_P", (RTX), REG, MEM, CONCAT)->unchanging)
|
||
#define RTX_FRAME_RELATED_P(RTX) \
|
||
(RTL_FLAG_CHECK5("RTX_FRAME_RELATED_P", (RTX), INSN, CALL_INSN, \
|
||
JUMP_INSN, BARRIER, SET)->frame_related)
|
||
|
||
/* 1 if RTX is an insn that has been deleted. */
|
||
#define INSN_DELETED_P(RTX) \
|
||
(RTL_FLAG_CHECK6("INSN_DELETED_P", (RTX), INSN, CALL_INSN, JUMP_INSN, \
|
||
CODE_LABEL, BARRIER, NOTE)->volatil)
|
||
|
||
/* 1 if RTX is a call to a const or pure function. */
|
||
#define CONST_OR_PURE_CALL_P(RTX) \
|
||
(RTL_FLAG_CHECK3("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN, NOTE, \
|
||
EXPR_LIST)->unchanging)
|
||
|
||
/* 1 if RTX is a call_insn for a sibling call. */
|
||
#define SIBLING_CALL_P(RTX) \
|
||
(RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
|
||
|
||
/* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
|
||
#define INSN_ANNULLED_BRANCH_P(RTX) \
|
||
(RTL_FLAG_CHECK3("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN, INSN)->unchanging)
|
||
|
||
/* 1 if RTX is an insn that is dead code. Valid only for dead-code
|
||
elimination phase. */
|
||
#define INSN_DEAD_CODE_P(RTX) \
|
||
(RTL_FLAG_CHECK3("INSN_DEAD_CODE_P", (RTX), INSN, CALL_INSN, JUMP_INSN)->in_struct)
|
||
|
||
/* 1 if RTX is an insn in a delay slot and is from the target of the branch.
|
||
If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be
|
||
executed if the branch is taken. For annulled branches with this bit
|
||
clear, the insn should be executed only if the branch is not taken. */
|
||
#define INSN_FROM_TARGET_P(RTX) \
|
||
(RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct)
|
||
|
||
#define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4)
|
||
|
||
#define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0)
|
||
|
||
/* Holds a list of notes on what this insn does to various REGs.
|
||
It is a chain of EXPR_LIST rtx's, where the second operand is the
|
||
chain pointer and the first operand is the REG being described.
|
||
The mode field of the EXPR_LIST contains not a real machine mode
|
||
but a value from enum reg_note. */
|
||
|
||
#define REG_NOTES(INSN) XEXP(INSN, 8)
|
||
|
||
/* Don't forget to change reg_note_name in rtl.c. */
|
||
enum reg_note
|
||
{
|
||
/* The value in REG dies in this insn (i.e., it is not needed past
|
||
this insn). If REG is set in this insn, the REG_DEAD note may,
|
||
but need not, be omitted. */
|
||
REG_DEAD = 1,
|
||
|
||
/* The REG is autoincremented or autodecremented. */
|
||
REG_INC,
|
||
|
||
/* Describes the insn as a whole; it says that the insn sets a register
|
||
to a constant value or to be equivalent to a memory address. If the
|
||
register is spilled to the stack then the constant value should be
|
||
substituted for it. The contents of the REG_EQUIV is the constant
|
||
value or memory address, which may be different from the source of
|
||
the SET although it has the same value. A REG_EQUIV note may also
|
||
appear on an insn which copies a register parameter to a pseudo-register,
|
||
if there is a memory address which could be used to hold that
|
||
pseudo-register throughout the function. */
|
||
REG_EQUIV,
|
||
|
||
/* Like REG_EQUIV except that the destination is only momentarily equal
|
||
to the specified rtx. Therefore, it cannot be used for substitution;
|
||
but it can be used for cse. */
|
||
REG_EQUAL,
|
||
|
||
/* This insn copies the return-value of a library call out of the hard reg
|
||
for return values. This note is actually an INSN_LIST and it points to
|
||
the first insn involved in setting up arguments for the call. flow.c
|
||
uses this to delete the entire library call when its result is dead. */
|
||
REG_RETVAL,
|
||
|
||
/* The inverse of REG_RETVAL: it goes on the first insn of the library call
|
||
and points at the one that has the REG_RETVAL. This note is also an
|
||
INSN_LIST. */
|
||
REG_LIBCALL,
|
||
|
||
/* The register is always nonnegative during the containing loop. This is
|
||
used in branches so that decrement and branch instructions terminating
|
||
on zero can be matched. There must be an insn pattern in the md file
|
||
named `decrement_and_branch_until_zero' or else this will never be added
|
||
to any instructions. */
|
||
REG_NONNEG,
|
||
|
||
/* There is no conflict *after this insn* between the register in the note
|
||
and the destination of this insn. */
|
||
REG_NO_CONFLICT,
|
||
|
||
/* Identifies a register set in this insn and never used. */
|
||
REG_UNUSED,
|
||
|
||
/* REG_CC_SETTER and REG_CC_USER link a pair of insns that set and use CC0,
|
||
respectively. Normally, these are required to be consecutive insns, but
|
||
we permit putting a cc0-setting insn in the delay slot of a branch as
|
||
long as only one copy of the insn exists. In that case, these notes
|
||
point from one to the other to allow code generation to determine what
|
||
any require information and to properly update CC_STATUS. These notes
|
||
are INSN_LISTs. */
|
||
REG_CC_SETTER, REG_CC_USER,
|
||
|
||
/* Points to a CODE_LABEL. Used by non-JUMP_INSNs to say that the
|
||
CODE_LABEL contained in the REG_LABEL note is used by the insn.
|
||
This note is an INSN_LIST. */
|
||
REG_LABEL,
|
||
|
||
/* REG_DEP_ANTI and REG_DEP_OUTPUT are used in LOG_LINKS to represent
|
||
write-after-read and write-after-write dependencies respectively.
|
||
Data dependencies, which are the only type of LOG_LINK created by
|
||
flow, are represented by a 0 reg note kind. */
|
||
REG_DEP_ANTI, REG_DEP_OUTPUT,
|
||
|
||
/* REG_BR_PROB is attached to JUMP_INSNs and CALL_INSNs.
|
||
It has an integer value. For jumps, it is the probability that this is a
|
||
taken branch. For calls, it is the probability that this call won't
|
||
return. */
|
||
REG_BR_PROB,
|
||
|
||
/* REG_VALUE_PROFILE is attached when the profile is read in to an insn
|
||
before that the code to profile the value is inserted. It contains
|
||
the results of profiling. */
|
||
REG_VALUE_PROFILE,
|
||
|
||
/* Attached to a call insn; indicates that the call is malloc-like and
|
||
that the pointer returned cannot alias anything else. */
|
||
REG_NOALIAS,
|
||
|
||
/* Used to optimize rtl generated by dynamic stack allocations for targets
|
||
where SETJMP_VIA_SAVE_AREA is true. */
|
||
REG_SAVE_AREA,
|
||
|
||
/* REG_BR_PRED is attached to JUMP_INSNs and CALL_INSNSs. It contains
|
||
CONCAT of two integer value. First specifies the branch predictor
|
||
that added the note, second specifies the predicted hitrate of branch
|
||
in the same format as REG_BR_PROB note uses. */
|
||
REG_BR_PRED,
|
||
|
||
/* Attached to insns that are RTX_FRAME_RELATED_P, but are too complex
|
||
for DWARF to interpret what they imply. The attached rtx is used
|
||
instead of intuition. */
|
||
REG_FRAME_RELATED_EXPR,
|
||
|
||
/* Indicates that REG holds the exception context for the function.
|
||
This context is shared by inline functions, so the code to acquire
|
||
the real exception context is delayed until after inlining. */
|
||
REG_EH_CONTEXT,
|
||
|
||
/* Indicates what exception region an INSN belongs in. This is used to
|
||
indicate what region to which a call may throw. REGION 0 indicates
|
||
that a call cannot throw at all. REGION -1 indicates that it cannot
|
||
throw, nor will it execute a non-local goto. */
|
||
REG_EH_REGION,
|
||
|
||
/* Used by haifa-sched to save NOTE_INSN notes across scheduling. */
|
||
REG_SAVE_NOTE,
|
||
|
||
/* Indicates that this insn (which is part of the prologue) computes
|
||
a value which might not be used later, and if so it's OK to delete
|
||
the insn. Normally, deleting any insn in the prologue is an error.
|
||
At present the parameter is unused and set to (const_int 0). */
|
||
REG_MAYBE_DEAD,
|
||
|
||
/* Indicates that a call does not return. */
|
||
REG_NORETURN,
|
||
|
||
/* Indicates that an indirect jump is a non-local goto instead of a
|
||
computed goto. */
|
||
REG_NON_LOCAL_GOTO,
|
||
|
||
/* This kind of note is generated at each to `setjmp',
|
||
and similar functions that can return twice. */
|
||
REG_SETJMP,
|
||
|
||
/* Indicate calls that always returns. */
|
||
REG_ALWAYS_RETURN,
|
||
|
||
/* Indicate that the memory load references a vtable. The expression
|
||
is of the form (plus (symbol_ref vtable_sym) (const_int offset)). */
|
||
REG_VTABLE_REF
|
||
};
|
||
|
||
/* The base value for branch probability notes. */
|
||
#define REG_BR_PROB_BASE 10000
|
||
|
||
/* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
|
||
#define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
|
||
#define PUT_REG_NOTE_KIND(LINK, KIND) \
|
||
PUT_MODE (LINK, (enum machine_mode) (KIND))
|
||
|
||
/* Names for REG_NOTE's in EXPR_LIST insn's. */
|
||
|
||
extern const char * const reg_note_name[];
|
||
#define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)])
|
||
|
||
/* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of
|
||
USE and CLOBBER expressions.
|
||
USE expressions list the registers filled with arguments that
|
||
are passed to the function.
|
||
CLOBBER expressions document the registers explicitly clobbered
|
||
by this CALL_INSN.
|
||
Pseudo registers can not be mentioned in this list. */
|
||
#define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 9)
|
||
|
||
/* The label-number of a code-label. The assembler label
|
||
is made from `L' and the label-number printed in decimal.
|
||
Label numbers are unique in a compilation. */
|
||
#define CODE_LABEL_NUMBER(INSN) XINT (INSN, 6)
|
||
|
||
#define LINE_NUMBER NOTE
|
||
|
||
/* In a NOTE that is a line number, this is a string for the file name that the
|
||
line is in. We use the same field to record block numbers temporarily in
|
||
NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts
|
||
between ints and pointers if we use a different macro for the block number.)
|
||
*/
|
||
|
||
/* Opaque data. */
|
||
#define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 4, NOTE)
|
||
#define NOTE_SOURCE_FILE(INSN) XCSTR (INSN, 4, NOTE)
|
||
#define NOTE_BLOCK(INSN) XCTREE (INSN, 4, NOTE)
|
||
#define NOTE_EH_HANDLER(INSN) XCINT (INSN, 4, NOTE)
|
||
#define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 4, NOTE)
|
||
#define NOTE_EXPECTED_VALUE(INSN) XCEXP (INSN, 4, NOTE)
|
||
#define NOTE_PREDICTION(INSN) XCINT (INSN, 4, NOTE)
|
||
#define NOTE_PRECONDITIONED(INSN) XCINT (INSN, 4, NOTE)
|
||
|
||
/* In a NOTE that is a line number, this is the line number.
|
||
Other kinds of NOTEs are identified by negative numbers here. */
|
||
#define NOTE_LINE_NUMBER(INSN) XCINT (INSN, 5, NOTE)
|
||
|
||
/* Nonzero if INSN is a note marking the beginning of a basic block. */
|
||
#define NOTE_INSN_BASIC_BLOCK_P(INSN) \
|
||
(GET_CODE (INSN) == NOTE \
|
||
&& NOTE_LINE_NUMBER (INSN) == NOTE_INSN_BASIC_BLOCK)
|
||
|
||
/* Algorithm and flags for prediction. */
|
||
#define NOTE_PREDICTION_ALG(INSN) (XCINT(INSN, 4, NOTE)>>8)
|
||
#define NOTE_PREDICTION_FLAGS(INSN) (XCINT(INSN, 4, NOTE)&0xff)
|
||
#define NOTE_PREDICT(ALG,FLAGS) ((ALG<<8)+(FLAGS))
|
||
|
||
/* Codes that appear in the NOTE_LINE_NUMBER field
|
||
for kinds of notes that are not line numbers.
|
||
|
||
Notice that we do not try to use zero here for any of
|
||
the special note codes because sometimes the source line
|
||
actually can be zero! This happens (for example) when we
|
||
are generating code for the per-translation-unit constructor
|
||
and destructor routines for some C++ translation unit.
|
||
|
||
If you should change any of the following values, or if you
|
||
should add a new value here, don't forget to change the
|
||
note_insn_name array in rtl.c. */
|
||
|
||
enum insn_note
|
||
{
|
||
/* Keep all of these numbers negative. Adjust as needed. */
|
||
NOTE_INSN_BIAS = -100,
|
||
|
||
/* This note is used to get rid of an insn
|
||
when it isn't safe to patch the insn out of the chain. */
|
||
NOTE_INSN_DELETED,
|
||
|
||
/* These are used to mark the beginning and end of a lexical block.
|
||
See NOTE_BLOCK, identify_blocks and reorder_blocks. */
|
||
NOTE_INSN_BLOCK_BEG,
|
||
NOTE_INSN_BLOCK_END,
|
||
|
||
/* These mark the extremes of a loop. */
|
||
NOTE_INSN_LOOP_BEG,
|
||
NOTE_INSN_LOOP_END,
|
||
|
||
/* Generated at the place in a loop that `continue' jumps to. */
|
||
NOTE_INSN_LOOP_CONT,
|
||
/* Generated at the start of a duplicated exit test. */
|
||
NOTE_INSN_LOOP_VTOP,
|
||
|
||
/* Generated at the end of a conditional at the top of the loop.
|
||
This is used to perform a lame form of loop rotation in lieu
|
||
of actually understanding the loop structure. The note is
|
||
discarded after rotation is complete. */
|
||
NOTE_INSN_LOOP_END_TOP_COND,
|
||
|
||
/* This kind of note is generated at the end of the function body,
|
||
just before the return insn or return label. In an optimizing
|
||
compilation it is deleted by the first jump optimization, after
|
||
enabling that optimizer to determine whether control can fall
|
||
off the end of the function body without a return statement. */
|
||
NOTE_INSN_FUNCTION_END,
|
||
|
||
/* This marks the point immediately after the last prologue insn. */
|
||
NOTE_INSN_PROLOGUE_END,
|
||
|
||
/* This marks the point immediately prior to the first epilogue insn. */
|
||
NOTE_INSN_EPILOGUE_BEG,
|
||
|
||
/* Generated in place of user-declared labels when they are deleted. */
|
||
NOTE_INSN_DELETED_LABEL,
|
||
|
||
/* This note indicates the start of the real body of the function,
|
||
i.e. the point just after all of the parms have been moved into
|
||
their homes, etc. */
|
||
NOTE_INSN_FUNCTION_BEG,
|
||
|
||
/* These note where exception handling regions begin and end.
|
||
Uses NOTE_EH_HANDLER to identify the region in question. */
|
||
NOTE_INSN_EH_REGION_BEG,
|
||
NOTE_INSN_EH_REGION_END,
|
||
|
||
/* Generated whenever a duplicate line number note is output. For example,
|
||
one is output after the end of an inline function, in order to prevent
|
||
the line containing the inline call from being counted twice in gcov. */
|
||
NOTE_INSN_REPEATED_LINE_NUMBER,
|
||
|
||
/* Record the struct for the following basic block. Uses NOTE_BASIC_BLOCK. */
|
||
NOTE_INSN_BASIC_BLOCK,
|
||
|
||
/* Record the expected value of a register at a location. Uses
|
||
NOTE_EXPECTED_VALUE; stored as (eq (reg) (const_int)). */
|
||
NOTE_INSN_EXPECTED_VALUE,
|
||
|
||
/* Record a prediction. Uses NOTE_PREDICTION. */
|
||
NOTE_INSN_PREDICTION,
|
||
|
||
NOTE_INSN_MAX
|
||
};
|
||
|
||
/* Names for NOTE insn's other than line numbers. */
|
||
|
||
extern const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS];
|
||
#define GET_NOTE_INSN_NAME(NOTE_CODE) \
|
||
(note_insn_name[(NOTE_CODE) - (int) NOTE_INSN_BIAS])
|
||
|
||
/* The name of a label, in case it corresponds to an explicit label
|
||
in the input source code. */
|
||
#define LABEL_NAME(RTX) XCSTR (RTX, 7, CODE_LABEL)
|
||
|
||
/* In jump.c, each label contains a count of the number
|
||
of LABEL_REFs that point at it, so unused labels can be deleted. */
|
||
#define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL)
|
||
|
||
/* Labels carry a two-bit field composed of the ->jump and ->call
|
||
bits. This field indicates whether the label is an alternate
|
||
entry point, and if so, what kind. */
|
||
enum label_kind
|
||
{
|
||
LABEL_NORMAL = 0, /* ordinary label */
|
||
LABEL_STATIC_ENTRY, /* alternate entry point, not exported */
|
||
LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */
|
||
LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */
|
||
};
|
||
|
||
#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007)
|
||
|
||
/* Retrieve the kind of LABEL. */
|
||
#define LABEL_KIND(LABEL) __extension__ \
|
||
({ rtx const _label = (LABEL); \
|
||
if (GET_CODE (_label) != CODE_LABEL) \
|
||
rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \
|
||
__FUNCTION__); \
|
||
(enum label_kind) ((_label->jump << 1) | _label->call); })
|
||
|
||
/* Set the kind of LABEL. */
|
||
#define SET_LABEL_KIND(LABEL, KIND) do { \
|
||
rtx _label = (LABEL); \
|
||
unsigned int _kind = (KIND); \
|
||
if (GET_CODE (_label) != CODE_LABEL) \
|
||
rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \
|
||
__FUNCTION__); \
|
||
_label->jump = ((_kind >> 1) & 1); \
|
||
_label->call = (_kind & 1); \
|
||
} while (0)
|
||
|
||
#else
|
||
|
||
/* Retrieve the kind of LABEL. */
|
||
#define LABEL_KIND(LABEL) \
|
||
((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call))
|
||
|
||
/* Set the kind of LABEL. */
|
||
#define SET_LABEL_KIND(LABEL, KIND) do { \
|
||
rtx _label = (LABEL); \
|
||
unsigned int _kind = (KIND); \
|
||
_label->jump = ((_kind >> 1) & 1); \
|
||
_label->call = (_kind & 1); \
|
||
} while (0)
|
||
|
||
#endif /* rtl flag checking */
|
||
|
||
#define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL)
|
||
|
||
/* The original regno this ADDRESSOF was built for. */
|
||
#define ADDRESSOF_REGNO(RTX) XCUINT (RTX, 1, ADDRESSOF)
|
||
|
||
/* The variable in the register we took the address of. */
|
||
#define ADDRESSOF_DECL(RTX) XCTREE (RTX, 2, ADDRESSOF)
|
||
|
||
/* In jump.c, each JUMP_INSN can point to a label that it can jump to,
|
||
so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can
|
||
be decremented and possibly the label can be deleted. */
|
||
#define JUMP_LABEL(INSN) XCEXP (INSN, 9, JUMP_INSN)
|
||
|
||
/* Once basic blocks are found in flow.c,
|
||
each CODE_LABEL starts a chain that goes through
|
||
all the LABEL_REFs that jump to that label.
|
||
The chain eventually winds up at the CODE_LABEL: it is circular. */
|
||
#define LABEL_REFS(LABEL) XCEXP (LABEL, 5, CODE_LABEL)
|
||
|
||
/* This is the field in the LABEL_REF through which the circular chain
|
||
of references to a particular label is linked.
|
||
This chain is set up in flow.c. */
|
||
|
||
#define LABEL_NEXTREF(REF) XCEXP (REF, 1, LABEL_REF)
|
||
|
||
/* Once basic blocks are found in flow.c,
|
||
Each LABEL_REF points to its containing instruction with this field. */
|
||
|
||
#define CONTAINING_INSN(RTX) XCEXP (RTX, 2, LABEL_REF)
|
||
|
||
/* For a REG rtx, REGNO extracts the register number. ORIGINAL_REGNO holds
|
||
the number the register originally had; for a pseudo register turned into
|
||
a hard reg this will hold the old pseudo register number. */
|
||
|
||
#define REGNO(RTX) XCUINT (RTX, 0, REG)
|
||
#define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1)
|
||
|
||
/* 1 if RTX is a reg or parallel that is the current function's return
|
||
value. */
|
||
#define REG_FUNCTION_VALUE_P(RTX) \
|
||
(RTL_FLAG_CHECK2("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->integrated)
|
||
|
||
/* 1 if RTX is a reg that corresponds to a variable declared by the user. */
|
||
#define REG_USERVAR_P(RTX) \
|
||
(RTL_FLAG_CHECK1("REG_USERVAR_P", (RTX), REG)->volatil)
|
||
|
||
/* 1 if RTX is a reg that holds a pointer value. */
|
||
#define REG_POINTER(RTX) \
|
||
(RTL_FLAG_CHECK1("REG_POINTER", (RTX), REG)->frame_related)
|
||
|
||
/* 1 if the given register REG corresponds to a hard register. */
|
||
#define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG)))
|
||
|
||
/* 1 if the given register number REG_NO corresponds to a hard register. */
|
||
#define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER)
|
||
|
||
/* For a CONST_INT rtx, INTVAL extracts the integer. */
|
||
|
||
#define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT)
|
||
|
||
/* For a CONST_DOUBLE:
|
||
For a DImode, there are two integers CONST_DOUBLE_LOW is the
|
||
low-order word and ..._HIGH the high-order.
|
||
For a float, there is a REAL_VALUE_TYPE structure, and
|
||
CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */
|
||
#define CONST_DOUBLE_LOW(r) XCWINT (r, 0, CONST_DOUBLE)
|
||
#define CONST_DOUBLE_HIGH(r) XCWINT (r, 1, CONST_DOUBLE)
|
||
#define CONST_DOUBLE_REAL_VALUE(r) ((struct real_value *)&CONST_DOUBLE_LOW(r))
|
||
|
||
/* For a CONST_VECTOR, return element #n. */
|
||
#define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR)
|
||
|
||
/* For a CONST_VECTOR, return the number of elements in a vector. */
|
||
#define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR)
|
||
|
||
/* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of.
|
||
SUBREG_BYTE extracts the byte-number. */
|
||
|
||
#define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG)
|
||
#define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG)
|
||
|
||
/* in rtlanal.c */
|
||
extern unsigned int subreg_lsb (rtx);
|
||
extern unsigned int subreg_regno_offset (unsigned int, enum machine_mode,
|
||
unsigned int, enum machine_mode);
|
||
extern bool subreg_offset_representable_p (unsigned int, enum machine_mode,
|
||
unsigned int, enum machine_mode);
|
||
extern unsigned int subreg_regno (rtx);
|
||
|
||
/* 1 if RTX is a subreg containing a reg that is already known to be
|
||
sign- or zero-extended from the mode of the subreg to the mode of
|
||
the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the
|
||
extension.
|
||
|
||
When used as a LHS, is means that this extension must be done
|
||
when assigning to SUBREG_REG. */
|
||
|
||
#define SUBREG_PROMOTED_VAR_P(RTX) \
|
||
(RTL_FLAG_CHECK1("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct)
|
||
|
||
#define SUBREG_PROMOTED_UNSIGNED_SET(RTX, VAL) \
|
||
do { \
|
||
rtx const _rtx = RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_SET", (RTX), SUBREG); \
|
||
if ((VAL) < 0) \
|
||
_rtx->volatil = 1; \
|
||
else { \
|
||
_rtx->volatil = 0; \
|
||
_rtx->unchanging = (VAL); \
|
||
} \
|
||
} while (0)
|
||
#define SUBREG_PROMOTED_UNSIGNED_P(RTX) \
|
||
((RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) \
|
||
? -1 : (RTX)->unchanging)
|
||
|
||
/* Access various components of an ASM_OPERANDS rtx. */
|
||
|
||
#define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS)
|
||
#define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS)
|
||
#define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS)
|
||
#define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS)
|
||
#define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS)
|
||
#define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS)
|
||
#define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS)
|
||
#define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \
|
||
XCVECEXP (RTX, 4, N, ASM_OPERANDS)
|
||
#define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \
|
||
XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0)
|
||
#define ASM_OPERANDS_INPUT_MODE(RTX, N) \
|
||
GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS))
|
||
#define ASM_OPERANDS_SOURCE_FILE(RTX) XCSTR (RTX, 5, ASM_OPERANDS)
|
||
#define ASM_OPERANDS_SOURCE_LINE(RTX) XCINT (RTX, 6, ASM_OPERANDS)
|
||
|
||
/* 1 if RTX is a mem and we should keep the alias set for this mem
|
||
unchanged when we access a component. Set to 1, or example, when we
|
||
are already in a non-addressable component of an aggregate. */
|
||
#define MEM_KEEP_ALIAS_SET_P(RTX) \
|
||
(RTL_FLAG_CHECK1("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump)
|
||
|
||
/* 1 if RTX is a mem or asm_operand for a volatile reference. */
|
||
#define MEM_VOLATILE_P(RTX) \
|
||
(RTL_FLAG_CHECK3("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \
|
||
ASM_INPUT)->volatil)
|
||
|
||
/* 1 if RTX is a mem that refers to an aggregate, either to the
|
||
aggregate itself of to a field of the aggregate. If zero, RTX may
|
||
or may not be such a reference. */
|
||
#define MEM_IN_STRUCT_P(RTX) \
|
||
(RTL_FLAG_CHECK1("MEM_IN_STRUCT_P", (RTX), MEM)->in_struct)
|
||
|
||
/* 1 if RTX is a mem that refers to a scalar. If zero, RTX may or may
|
||
not refer to a scalar. */
|
||
#define MEM_SCALAR_P(RTX) \
|
||
(RTL_FLAG_CHECK1("MEM_SCALAR_P", (RTX), MEM)->frame_related)
|
||
|
||
/* 1 if RTX is a mem that cannot trap. */
|
||
#define MEM_NOTRAP_P(RTX) \
|
||
(RTL_FLAG_CHECK1("MEM_NOTRAP_P", (RTX), MEM)->call)
|
||
|
||
/* If VAL is nonzero, set MEM_IN_STRUCT_P and clear MEM_SCALAR_P in
|
||
RTX. Otherwise, vice versa. Use this macro only when you are
|
||
*sure* that you know that the MEM is in a structure, or is a
|
||
scalar. VAL is evaluated only once. */
|
||
#define MEM_SET_IN_STRUCT_P(RTX, VAL) \
|
||
do { \
|
||
if (VAL) \
|
||
{ \
|
||
MEM_IN_STRUCT_P (RTX) = 1; \
|
||
MEM_SCALAR_P (RTX) = 0; \
|
||
} \
|
||
else \
|
||
{ \
|
||
MEM_IN_STRUCT_P (RTX) = 0; \
|
||
MEM_SCALAR_P (RTX) = 1; \
|
||
} \
|
||
} while (0)
|
||
|
||
/* The memory attribute block. We provide access macros for each value
|
||
in the block and provide defaults if none specified. */
|
||
#define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1)
|
||
|
||
/* The register attribute block. We provide access macros for each value
|
||
in the block and provide defaults if none specified. */
|
||
#define REG_ATTRS(RTX) X0REGATTR (RTX, 2)
|
||
|
||
/* For a MEM rtx, the alias set. If 0, this MEM is not in any alias
|
||
set, and may alias anything. Otherwise, the MEM can only alias
|
||
MEMs in a conflicting alias set. This value is set in a
|
||
language-dependent manner in the front-end, and should not be
|
||
altered in the back-end. These set numbers are tested with
|
||
alias_sets_conflict_p. */
|
||
#define MEM_ALIAS_SET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->alias)
|
||
|
||
/* For a MEM rtx, the decl it is known to refer to, if it is known to
|
||
refer to part of a DECL. It may also be a COMPONENT_REF. */
|
||
#define MEM_EXPR(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->expr)
|
||
|
||
/* For a MEM rtx, the offset from the start of MEM_EXPR, if known, as a
|
||
RTX that is always a CONST_INT. */
|
||
#define MEM_OFFSET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->offset)
|
||
|
||
/* For a MEM rtx, the size in bytes of the MEM, if known, as an RTX that
|
||
is always a CONST_INT. */
|
||
#define MEM_SIZE(RTX) \
|
||
(MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->size \
|
||
: GET_MODE (RTX) != BLKmode ? GEN_INT (GET_MODE_SIZE (GET_MODE (RTX))) \
|
||
: 0)
|
||
|
||
/* For a MEM rtx, the alignment in bits. We can use the alignment of the
|
||
mode as a default when STRICT_ALIGNMENT, but not if not. */
|
||
#define MEM_ALIGN(RTX) \
|
||
(MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->align \
|
||
: (STRICT_ALIGNMENT && GET_MODE (RTX) != BLKmode \
|
||
? GET_MODE_ALIGNMENT (GET_MODE (RTX)) : BITS_PER_UNIT))
|
||
|
||
/* For a REG rtx, the decl it is known to refer to, if it is known to
|
||
refer to part of a DECL. */
|
||
#define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl)
|
||
|
||
/* For a MEM rtx, the offset from the start of MEM_DECL, if known, as a
|
||
RTX that is always a CONST_INT. */
|
||
#define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset)
|
||
|
||
/* Copy the attributes that apply to memory locations from RHS to LHS. */
|
||
#define MEM_COPY_ATTRIBUTES(LHS, RHS) \
|
||
(MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \
|
||
MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \
|
||
MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \
|
||
MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \
|
||
RTX_UNCHANGING_P (LHS) = RTX_UNCHANGING_P (RHS), \
|
||
MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \
|
||
MEM_ATTRS (LHS) = MEM_ATTRS (RHS))
|
||
|
||
/* 1 if RTX is a label_ref to a label outside the loop containing the
|
||
reference. */
|
||
#define LABEL_OUTSIDE_LOOP_P(RTX) \
|
||
(RTL_FLAG_CHECK1("LABEL_OUTSIDE_LOOP_P", (RTX), LABEL_REF)->in_struct)
|
||
|
||
/* 1 if RTX is a label_ref for a nonlocal label. */
|
||
/* Likewise in an expr_list for a reg_label note. */
|
||
#define LABEL_REF_NONLOCAL_P(RTX) \
|
||
(RTL_FLAG_CHECK2("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF, \
|
||
REG_LABEL)->volatil)
|
||
|
||
/* 1 if RTX is a code_label that should always be considered to be needed. */
|
||
#define LABEL_PRESERVE_P(RTX) \
|
||
(RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct)
|
||
|
||
/* 1 if RTX is a reg that is used only in an exit test of a loop. */
|
||
#define REG_LOOP_TEST_P(RTX) \
|
||
(RTL_FLAG_CHECK1("REG_LOOP_TEST_P", (RTX), REG)->in_struct)
|
||
|
||
/* During sched, 1 if RTX is an insn that must be scheduled together
|
||
with the preceding insn. */
|
||
#define SCHED_GROUP_P(RTX) \
|
||
(RTL_FLAG_CHECK3("SCHED_GROUP_P", (RTX), INSN, JUMP_INSN, CALL_INSN \
|
||
)->in_struct)
|
||
|
||
/* For a SET rtx, SET_DEST is the place that is set
|
||
and SET_SRC is the value it is set to. */
|
||
#define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER)
|
||
#define SET_SRC(RTX) XCEXP(RTX, 1, SET)
|
||
#define SET_IS_RETURN_P(RTX) \
|
||
(RTL_FLAG_CHECK1("SET_IS_RETURN_P", (RTX), SET)->jump)
|
||
|
||
/* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */
|
||
#define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF)
|
||
#define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF)
|
||
|
||
/* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base
|
||
conditionally executing the code on, COND_EXEC_CODE is the code
|
||
to execute if the condition is true. */
|
||
#define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC)
|
||
#define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC)
|
||
|
||
/* 1 if RTX is a symbol_ref that addresses this function's rtl
|
||
constants pool. */
|
||
#define CONSTANT_POOL_ADDRESS_P(RTX) \
|
||
(RTL_FLAG_CHECK1("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging)
|
||
|
||
/* 1 if RTX is a symbol_ref that addresses a value in the file's
|
||
tree constant pool. This information is private to varasm.c. */
|
||
#define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \
|
||
(RTL_FLAG_CHECK1("TREE_CONSTANT_POOL_ADDRESS_P", \
|
||
(RTX), SYMBOL_REF)->frame_related)
|
||
|
||
/* Used if RTX is a symbol_ref, for machine-specific purposes. */
|
||
#define SYMBOL_REF_FLAG(RTX) \
|
||
(RTL_FLAG_CHECK1("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil)
|
||
|
||
/* 1 if RTX is a symbol_ref that has been the library function in
|
||
emit_library_call. */
|
||
#define SYMBOL_REF_USED(RTX) \
|
||
(RTL_FLAG_CHECK1("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used)
|
||
|
||
/* 1 if RTX is a symbol_ref for a weak symbol. */
|
||
#define SYMBOL_REF_WEAK(RTX) \
|
||
(RTL_FLAG_CHECK1("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->integrated)
|
||
|
||
/* The tree (decl or constant) associated with the symbol, or null. */
|
||
#define SYMBOL_REF_DECL(RTX) X0TREE ((RTX), 2)
|
||
|
||
/* A set of flags on a symbol_ref that are, in some respects, redundant with
|
||
information derivable from the tree decl associated with this symbol.
|
||
Except that we build a *lot* of SYMBOL_REFs that aren't associated with a
|
||
decl. In some cases this is a bug. But beyond that, it's nice to cache
|
||
this information to avoid recomputing it. Finally, this allows space for
|
||
the target to store more than one bit of information, as with
|
||
SYMBOL_REF_FLAG. */
|
||
#define SYMBOL_REF_FLAGS(RTX) X0INT ((RTX), 1)
|
||
|
||
/* These flags are common enough to be defined for all targets. They
|
||
are computed by the default version of targetm.encode_section_info. */
|
||
|
||
/* Set if this symbol is a function. */
|
||
#define SYMBOL_FLAG_FUNCTION (1 << 0)
|
||
#define SYMBOL_REF_FUNCTION_P(RTX) \
|
||
((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0)
|
||
/* Set if targetm.binds_local_p is true. */
|
||
#define SYMBOL_FLAG_LOCAL (1 << 1)
|
||
#define SYMBOL_REF_LOCAL_P(RTX) \
|
||
((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0)
|
||
/* Set if targetm.in_small_data_p is true. */
|
||
#define SYMBOL_FLAG_SMALL (1 << 2)
|
||
#define SYMBOL_REF_SMALL_P(RTX) \
|
||
((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0)
|
||
/* The three-bit field at [5:3] is true for TLS variables; use
|
||
SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */
|
||
#define SYMBOL_FLAG_TLS_SHIFT 3
|
||
#define SYMBOL_REF_TLS_MODEL(RTX) \
|
||
((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7))
|
||
/* Set if this symbol is not defined in this translation unit. */
|
||
#define SYMBOL_FLAG_EXTERNAL (1 << 6)
|
||
#define SYMBOL_REF_EXTERNAL_P(RTX) \
|
||
((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0)
|
||
|
||
/* Subsequent bits are available for the target to use. */
|
||
#define SYMBOL_FLAG_MACH_DEP_SHIFT 7
|
||
#define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT)
|
||
|
||
/* Define a macro to look for REG_INC notes,
|
||
but save time on machines where they never exist. */
|
||
|
||
#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
|
||
#define FIND_REG_INC_NOTE(INSN, REG) \
|
||
((REG) != NULL_RTX && REG_P ((REG)) \
|
||
? find_regno_note ((INSN), REG_INC, REGNO (REG)) \
|
||
: find_reg_note ((INSN), REG_INC, (REG)))
|
||
#else
|
||
#define FIND_REG_INC_NOTE(INSN, REG) 0
|
||
#endif
|
||
|
||
/* Indicate whether the machine has any sort of auto increment addressing.
|
||
If not, we can avoid checking for REG_INC notes. */
|
||
|
||
#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
|
||
#define AUTO_INC_DEC
|
||
#endif
|
||
|
||
#ifndef HAVE_PRE_INCREMENT
|
||
#define HAVE_PRE_INCREMENT 0
|
||
#endif
|
||
|
||
#ifndef HAVE_PRE_DECREMENT
|
||
#define HAVE_PRE_DECREMENT 0
|
||
#endif
|
||
|
||
#ifndef HAVE_POST_INCREMENT
|
||
#define HAVE_POST_INCREMENT 0
|
||
#endif
|
||
|
||
#ifndef HAVE_POST_DECREMENT
|
||
#define HAVE_POST_DECREMENT 0
|
||
#endif
|
||
|
||
#ifndef HAVE_POST_MODIFY_DISP
|
||
#define HAVE_POST_MODIFY_DISP 0
|
||
#endif
|
||
|
||
#ifndef HAVE_POST_MODIFY_REG
|
||
#define HAVE_POST_MODIFY_REG 0
|
||
#endif
|
||
|
||
#ifndef HAVE_PRE_MODIFY_DISP
|
||
#define HAVE_PRE_MODIFY_DISP 0
|
||
#endif
|
||
|
||
#ifndef HAVE_PRE_MODIFY_REG
|
||
#define HAVE_PRE_MODIFY_REG 0
|
||
#endif
|
||
|
||
|
||
/* Some architectures do not have complete pre/post increment/decrement
|
||
instruction sets, or only move some modes efficiently. These macros
|
||
allow us to tune autoincrement generation. */
|
||
|
||
#ifndef USE_LOAD_POST_INCREMENT
|
||
#define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
|
||
#endif
|
||
|
||
#ifndef USE_LOAD_POST_DECREMENT
|
||
#define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
|
||
#endif
|
||
|
||
#ifndef USE_LOAD_PRE_INCREMENT
|
||
#define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
|
||
#endif
|
||
|
||
#ifndef USE_LOAD_PRE_DECREMENT
|
||
#define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
|
||
#endif
|
||
|
||
#ifndef USE_STORE_POST_INCREMENT
|
||
#define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
|
||
#endif
|
||
|
||
#ifndef USE_STORE_POST_DECREMENT
|
||
#define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
|
||
#endif
|
||
|
||
#ifndef USE_STORE_PRE_INCREMENT
|
||
#define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
|
||
#endif
|
||
|
||
#ifndef USE_STORE_PRE_DECREMENT
|
||
#define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
|
||
#endif
|
||
|
||
/* Determine if the insn is a PHI node. */
|
||
#define PHI_NODE_P(X) \
|
||
((X) && GET_CODE (X) == INSN \
|
||
&& GET_CODE (PATTERN (X)) == SET \
|
||
&& GET_CODE (SET_SRC (PATTERN (X))) == PHI)
|
||
|
||
/* Nonzero if we need to distinguish between the return value of this function
|
||
and the return value of a function called by this function. This helps
|
||
integrate.c.
|
||
This is 1 until after the rtl generation pass. */
|
||
extern int rtx_equal_function_value_matters;
|
||
|
||
/* Nonzero when we are generating CONCATs. */
|
||
extern int generating_concat_p;
|
||
|
||
/* Generally useful functions. */
|
||
|
||
/* In expmed.c */
|
||
extern int ceil_log2 (unsigned HOST_WIDE_INT);
|
||
|
||
#define plus_constant(X, C) plus_constant_wide ((X), (HOST_WIDE_INT) (C))
|
||
|
||
/* In builtins.c */
|
||
extern rtx expand_builtin_expect_jump (tree, rtx, rtx);
|
||
extern void purge_builtin_constant_p (void);
|
||
|
||
/* In explow.c */
|
||
extern void set_stack_check_libfunc (rtx);
|
||
extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, enum machine_mode);
|
||
extern rtx plus_constant_wide (rtx, HOST_WIDE_INT);
|
||
extern rtx plus_constant_for_output_wide (rtx, HOST_WIDE_INT);
|
||
extern void optimize_save_area_alloca (rtx);
|
||
|
||
/* In emit-rtl.c */
|
||
extern rtx gen_rtx (enum rtx_code, enum machine_mode, ...);
|
||
extern rtvec gen_rtvec (int, ...);
|
||
extern rtx copy_insn_1 (rtx);
|
||
extern rtx copy_insn (rtx);
|
||
extern rtx gen_int_mode (HOST_WIDE_INT, enum machine_mode);
|
||
extern rtx emit_copy_of_insn_after (rtx, rtx);
|
||
extern void set_reg_attrs_from_mem (rtx, rtx);
|
||
extern void set_mem_attrs_from_reg (rtx, rtx);
|
||
extern void set_reg_attrs_for_parm (rtx, rtx);
|
||
extern int mem_expr_equal_p (tree, tree);
|
||
|
||
/* In rtl.c */
|
||
extern rtx rtx_alloc (RTX_CODE);
|
||
extern rtvec rtvec_alloc (int);
|
||
extern rtx copy_rtx (rtx);
|
||
extern void dump_rtx_statistics (void);
|
||
|
||
/* In emit-rtl.c */
|
||
extern rtx copy_rtx_if_shared (rtx);
|
||
|
||
/* In rtl.c */
|
||
extern rtx copy_most_rtx (rtx, rtx);
|
||
extern rtx shallow_copy_rtx (rtx);
|
||
extern int rtx_equal_p (rtx, rtx);
|
||
|
||
/* In emit-rtl.c */
|
||
extern rtvec gen_rtvec_v (int, rtx *);
|
||
extern rtx gen_reg_rtx (enum machine_mode);
|
||
extern rtx gen_rtx_REG_offset (rtx, enum machine_mode, unsigned int, int);
|
||
extern rtx gen_label_rtx (void);
|
||
extern int subreg_hard_regno (rtx, int);
|
||
extern rtx gen_lowpart_common (enum machine_mode, rtx);
|
||
extern rtx gen_lowpart (enum machine_mode, rtx);
|
||
|
||
/* In cse.c */
|
||
extern rtx gen_lowpart_if_possible (enum machine_mode, rtx);
|
||
|
||
/* In emit-rtl.c */
|
||
extern rtx gen_highpart (enum machine_mode, rtx);
|
||
extern rtx gen_highpart_mode (enum machine_mode, enum machine_mode, rtx);
|
||
extern rtx gen_realpart (enum machine_mode, rtx);
|
||
extern rtx gen_imagpart (enum machine_mode, rtx);
|
||
extern rtx operand_subword (rtx, unsigned int, int, enum machine_mode);
|
||
|
||
/* In emit-rtl.c */
|
||
extern rtx operand_subword_force (rtx, unsigned int, enum machine_mode);
|
||
extern int subreg_lowpart_p (rtx);
|
||
extern unsigned int subreg_lowpart_offset (enum machine_mode,
|
||
enum machine_mode);
|
||
extern unsigned int subreg_highpart_offset (enum machine_mode,
|
||
enum machine_mode);
|
||
extern rtx make_safe_from (rtx, rtx);
|
||
extern rtx convert_memory_address (enum machine_mode, rtx);
|
||
extern rtx get_insns (void);
|
||
extern const char *get_insn_name (int);
|
||
extern rtx get_last_insn (void);
|
||
extern rtx get_last_insn_anywhere (void);
|
||
extern rtx get_first_nonnote_insn (void);
|
||
extern rtx get_last_nonnote_insn (void);
|
||
extern void start_sequence (void);
|
||
extern void push_to_sequence (rtx);
|
||
extern void end_sequence (void);
|
||
extern void push_to_full_sequence (rtx, rtx);
|
||
extern void end_full_sequence (rtx*, rtx*);
|
||
extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT,
|
||
enum machine_mode);
|
||
|
||
/* In varasm.c */
|
||
extern rtx force_const_mem (enum machine_mode, rtx);
|
||
|
||
/* In varasm.c */
|
||
extern rtx get_pool_constant (rtx);
|
||
extern rtx get_pool_constant_mark (rtx, bool *);
|
||
extern enum machine_mode get_pool_mode (rtx);
|
||
extern rtx get_pool_constant_for_function (struct function *, rtx);
|
||
extern enum machine_mode get_pool_mode_for_function (struct function *, rtx);
|
||
extern int get_pool_offset (rtx);
|
||
extern rtx simplify_subtraction (rtx);
|
||
|
||
/* In function.c */
|
||
extern rtx assign_stack_local (enum machine_mode, HOST_WIDE_INT, int);
|
||
extern rtx assign_stack_temp (enum machine_mode, HOST_WIDE_INT, int);
|
||
extern rtx assign_stack_temp_for_type (enum machine_mode,
|
||
HOST_WIDE_INT, int, tree);
|
||
extern rtx assign_temp (tree, int, int, int);
|
||
|
||
/* In emit-rtl.c */
|
||
extern rtx emit_insn_before (rtx, rtx);
|
||
extern rtx emit_insn_before_noloc (rtx, rtx);
|
||
extern rtx emit_insn_before_setloc (rtx, rtx, int);
|
||
extern rtx emit_jump_insn_before (rtx, rtx);
|
||
extern rtx emit_jump_insn_before_noloc (rtx, rtx);
|
||
extern rtx emit_jump_insn_before_setloc (rtx, rtx, int);
|
||
extern rtx emit_call_insn_before (rtx, rtx);
|
||
extern rtx emit_call_insn_before_noloc (rtx, rtx);
|
||
extern rtx emit_call_insn_before_setloc (rtx, rtx, int);
|
||
extern rtx emit_barrier_before (rtx);
|
||
extern rtx emit_label_before (rtx, rtx);
|
||
extern rtx emit_note_before (int, rtx);
|
||
extern rtx emit_insn_after (rtx, rtx);
|
||
extern rtx emit_insn_after_noloc (rtx, rtx);
|
||
extern rtx emit_insn_after_setloc (rtx, rtx, int);
|
||
extern rtx emit_jump_insn_after (rtx, rtx);
|
||
extern rtx emit_jump_insn_after_noloc (rtx, rtx);
|
||
extern rtx emit_jump_insn_after_setloc (rtx, rtx, int);
|
||
extern rtx emit_call_insn_after (rtx, rtx);
|
||
extern rtx emit_call_insn_after_noloc (rtx, rtx);
|
||
extern rtx emit_call_insn_after_setloc (rtx, rtx, int);
|
||
extern rtx emit_barrier_after (rtx);
|
||
extern rtx emit_label_after (rtx, rtx);
|
||
extern rtx emit_note_after (int, rtx);
|
||
extern rtx emit_note_copy_after (rtx, rtx);
|
||
extern rtx emit_insn (rtx);
|
||
extern rtx emit_jump_insn (rtx);
|
||
extern rtx emit_call_insn (rtx);
|
||
extern rtx emit_label (rtx);
|
||
extern rtx emit_barrier (void);
|
||
extern rtx emit_note (int);
|
||
extern rtx emit_note_copy (rtx);
|
||
extern rtx emit_line_note (location_t);
|
||
extern rtx make_insn_raw (rtx);
|
||
extern void add_function_usage_to (rtx, rtx);
|
||
extern rtx last_call_insn (void);
|
||
extern rtx previous_insn (rtx);
|
||
extern rtx next_insn (rtx);
|
||
extern rtx prev_nonnote_insn (rtx);
|
||
extern rtx next_nonnote_insn (rtx);
|
||
extern rtx prev_real_insn (rtx);
|
||
extern rtx next_real_insn (rtx);
|
||
extern rtx prev_active_insn (rtx);
|
||
extern rtx next_active_insn (rtx);
|
||
extern int active_insn_p (rtx);
|
||
extern rtx prev_label (rtx);
|
||
extern rtx next_label (rtx);
|
||
extern rtx next_cc0_user (rtx);
|
||
extern rtx prev_cc0_setter (rtx);
|
||
|
||
/* In cfglayout.c */
|
||
extern tree choose_inner_scope (tree, tree);
|
||
extern int insn_line (rtx);
|
||
extern const char * insn_file (rtx);
|
||
extern int locator_line (int);
|
||
extern const char * locator_file (int);
|
||
extern int prologue_locator, epilogue_locator;
|
||
|
||
/* In jump.c */
|
||
extern enum rtx_code reverse_condition (enum rtx_code);
|
||
extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code);
|
||
extern enum rtx_code swap_condition (enum rtx_code);
|
||
extern enum rtx_code unsigned_condition (enum rtx_code);
|
||
extern enum rtx_code signed_condition (enum rtx_code);
|
||
extern void mark_jump_label (rtx, rtx, int);
|
||
extern void cleanup_barriers (void);
|
||
|
||
/* In jump.c */
|
||
extern bool squeeze_notes (rtx *, rtx *);
|
||
extern rtx delete_related_insns (rtx);
|
||
extern void delete_jump (rtx);
|
||
extern void delete_barrier (rtx);
|
||
extern rtx get_label_before (rtx);
|
||
extern rtx get_label_after (rtx);
|
||
extern rtx follow_jumps (rtx);
|
||
|
||
/* In recog.c */
|
||
extern rtx *find_constant_term_loc (rtx *);
|
||
|
||
/* In emit-rtl.c */
|
||
extern rtx try_split (rtx, rtx, int);
|
||
extern int split_branch_probability;
|
||
|
||
/* In unknown file */
|
||
extern rtx split_insns (rtx, rtx);
|
||
|
||
/* In simplify-rtx.c */
|
||
extern rtx simplify_unary_operation (enum rtx_code, enum machine_mode, rtx,
|
||
enum machine_mode);
|
||
extern rtx simplify_binary_operation (enum rtx_code, enum machine_mode, rtx,
|
||
rtx);
|
||
extern rtx simplify_ternary_operation (enum rtx_code, enum machine_mode,
|
||
enum machine_mode, rtx, rtx, rtx);
|
||
extern rtx simplify_relational_operation (enum rtx_code, enum machine_mode,
|
||
rtx, rtx);
|
||
extern rtx simplify_gen_binary (enum rtx_code, enum machine_mode, rtx, rtx);
|
||
extern rtx simplify_gen_unary (enum rtx_code, enum machine_mode, rtx,
|
||
enum machine_mode);
|
||
extern rtx simplify_gen_ternary (enum rtx_code, enum machine_mode,
|
||
enum machine_mode, rtx, rtx, rtx);
|
||
extern rtx simplify_gen_relational (enum rtx_code, enum machine_mode,
|
||
enum machine_mode, rtx, rtx);
|
||
extern rtx simplify_subreg (enum machine_mode, rtx, enum machine_mode,
|
||
unsigned int);
|
||
extern rtx simplify_gen_subreg (enum machine_mode, rtx, enum machine_mode,
|
||
unsigned int);
|
||
extern rtx simplify_replace_rtx (rtx, rtx, rtx);
|
||
extern rtx simplify_rtx (rtx);
|
||
extern rtx avoid_constant_pool_reference (rtx);
|
||
extern bool constant_pool_reference_p (rtx);
|
||
|
||
/* In function.c */
|
||
extern rtx gen_mem_addressof (rtx, tree, int);
|
||
|
||
/* In regclass.c */
|
||
extern enum machine_mode choose_hard_reg_mode (unsigned int, unsigned int,
|
||
bool);
|
||
|
||
/* In emit-rtl.c */
|
||
extern rtx set_unique_reg_note (rtx, enum reg_note, rtx);
|
||
|
||
/* Functions in rtlanal.c */
|
||
|
||
/* Single set is implemented as macro for performance reasons. */
|
||
#define single_set(I) (INSN_P (I) \
|
||
? (GET_CODE (PATTERN (I)) == SET \
|
||
? PATTERN (I) : single_set_1 (I)) \
|
||
: NULL_RTX)
|
||
#define single_set_1(I) single_set_2 (I, PATTERN (I))
|
||
|
||
/* Structure used for passing data to REPLACE_LABEL. */
|
||
typedef struct replace_label_data
|
||
{
|
||
rtx r1;
|
||
rtx r2;
|
||
bool update_label_nuses;
|
||
} replace_label_data;
|
||
|
||
extern int rtx_addr_can_trap_p (rtx);
|
||
extern bool nonzero_address_p (rtx);
|
||
extern int rtx_unstable_p (rtx);
|
||
extern int rtx_varies_p (rtx, int);
|
||
extern int rtx_addr_varies_p (rtx, int);
|
||
extern HOST_WIDE_INT get_integer_term (rtx);
|
||
extern rtx get_related_value (rtx);
|
||
extern rtx get_jump_table_offset (rtx, rtx *);
|
||
extern int global_reg_mentioned_p (rtx);
|
||
extern int reg_mentioned_p (rtx, rtx);
|
||
extern int count_occurrences (rtx, rtx, int);
|
||
extern int reg_referenced_p (rtx, rtx);
|
||
extern int reg_used_between_p (rtx, rtx, rtx);
|
||
extern int reg_referenced_between_p (rtx, rtx, rtx);
|
||
extern int reg_set_between_p (rtx, rtx, rtx);
|
||
extern int regs_set_between_p (rtx, rtx, rtx);
|
||
extern int commutative_operand_precedence (rtx);
|
||
extern int swap_commutative_operands_p (rtx, rtx);
|
||
extern int modified_between_p (rtx, rtx, rtx);
|
||
extern int no_labels_between_p (rtx, rtx);
|
||
extern int no_jumps_between_p (rtx, rtx);
|
||
extern int modified_in_p (rtx, rtx);
|
||
extern int insn_dependent_p (rtx, rtx);
|
||
extern int reg_set_p (rtx, rtx);
|
||
extern rtx single_set_2 (rtx, rtx);
|
||
extern int multiple_sets (rtx);
|
||
extern int set_noop_p (rtx);
|
||
extern int noop_move_p (rtx);
|
||
extern rtx find_last_value (rtx, rtx *, rtx, int);
|
||
extern int refers_to_regno_p (unsigned int, unsigned int, rtx, rtx *);
|
||
extern int reg_overlap_mentioned_p (rtx, rtx);
|
||
extern rtx set_of (rtx, rtx);
|
||
extern void note_stores (rtx, void (*) (rtx, rtx, void *), void *);
|
||
extern void note_uses (rtx *, void (*) (rtx *, void *), void *);
|
||
extern rtx reg_set_last (rtx, rtx);
|
||
extern int dead_or_set_p (rtx, rtx);
|
||
extern int dead_or_set_regno_p (rtx, unsigned int);
|
||
extern rtx find_reg_note (rtx, enum reg_note, rtx);
|
||
extern rtx find_regno_note (rtx, enum reg_note, unsigned int);
|
||
extern rtx find_reg_equal_equiv_note (rtx);
|
||
extern int find_reg_fusage (rtx, enum rtx_code, rtx);
|
||
extern int find_regno_fusage (rtx, enum rtx_code, unsigned int);
|
||
extern int pure_call_p (rtx);
|
||
extern void remove_note (rtx, rtx);
|
||
extern int side_effects_p (rtx);
|
||
extern int volatile_refs_p (rtx);
|
||
extern int volatile_insn_p (rtx);
|
||
extern int may_trap_p (rtx);
|
||
extern int inequality_comparisons_p (rtx);
|
||
extern rtx replace_rtx (rtx, rtx, rtx);
|
||
extern rtx replace_regs (rtx, rtx *, unsigned int, int);
|
||
extern int replace_label (rtx *, void *);
|
||
extern int rtx_referenced_p (rtx, rtx);
|
||
extern bool tablejump_p (rtx, rtx *, rtx *);
|
||
extern int computed_jump_p (rtx);
|
||
typedef int (*rtx_function) (rtx *, void *);
|
||
extern int for_each_rtx (rtx *, rtx_function, void *);
|
||
extern rtx regno_use_in (unsigned int, rtx);
|
||
extern int auto_inc_p (rtx);
|
||
extern int in_expr_list_p (rtx, rtx);
|
||
extern void remove_node_from_expr_list (rtx, rtx *);
|
||
extern int insns_safe_to_move_p (rtx, rtx, rtx *);
|
||
extern int loc_mentioned_in_p (rtx *, rtx);
|
||
extern rtx find_first_parameter_load (rtx, rtx);
|
||
extern bool keep_with_call_p (rtx);
|
||
extern bool label_is_jump_target_p (rtx, rtx);
|
||
|
||
/* flow.c */
|
||
|
||
extern rtx find_use_as_address (rtx, rtx, HOST_WIDE_INT);
|
||
|
||
/* lists.c */
|
||
|
||
void free_EXPR_LIST_list (rtx *);
|
||
void free_INSN_LIST_list (rtx *);
|
||
void free_EXPR_LIST_node (rtx);
|
||
void free_INSN_LIST_node (rtx);
|
||
rtx alloc_INSN_LIST (rtx, rtx);
|
||
rtx alloc_EXPR_LIST (int, rtx, rtx);
|
||
|
||
/* regclass.c */
|
||
|
||
/* Maximum number of parallel sets and clobbers in any insn in this fn.
|
||
Always at least 3, since the combiner could put that many together
|
||
and we want this to remain correct for all the remaining passes. */
|
||
|
||
extern int max_parallel;
|
||
|
||
/* Free up register info memory. */
|
||
extern void free_reg_info (void);
|
||
|
||
/* recog.c */
|
||
extern int asm_noperands (rtx);
|
||
extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **,
|
||
enum machine_mode *);
|
||
|
||
extern enum reg_class reg_preferred_class (int);
|
||
extern enum reg_class reg_alternate_class (int);
|
||
|
||
extern rtx get_first_nonparm_insn (void);
|
||
|
||
extern void split_all_insns (int);
|
||
extern void split_all_insns_noflow (void);
|
||
|
||
#define MAX_SAVED_CONST_INT 64
|
||
extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1];
|
||
|
||
#define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT])
|
||
#define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1])
|
||
#define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2])
|
||
#define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1])
|
||
extern GTY(()) rtx const_true_rtx;
|
||
|
||
extern GTY(()) rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE];
|
||
|
||
/* Returns a constant 0 rtx in mode MODE. Integer modes are treated the
|
||
same as VOIDmode. */
|
||
|
||
#define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)])
|
||
|
||
/* Likewise, for the constants 1 and 2. */
|
||
|
||
#define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)])
|
||
#define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)])
|
||
|
||
/* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg
|
||
is used to represent the frame pointer. This is because the
|
||
hard frame pointer and the automatic variables are separated by an amount
|
||
that cannot be determined until after register allocation. We can assume
|
||
that in this case ELIMINABLE_REGS will be defined, one action of which
|
||
will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */
|
||
#ifndef HARD_FRAME_POINTER_REGNUM
|
||
#define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM
|
||
#endif
|
||
|
||
/* Index labels for global_rtl. */
|
||
enum global_rtl_index
|
||
{
|
||
GR_PC,
|
||
GR_CC0,
|
||
GR_STACK_POINTER,
|
||
GR_FRAME_POINTER,
|
||
/* For register elimination to work properly these hard_frame_pointer_rtx,
|
||
frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to
|
||
the same register. */
|
||
#if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
|
||
GR_ARG_POINTER = GR_FRAME_POINTER,
|
||
#endif
|
||
#if HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM
|
||
GR_HARD_FRAME_POINTER = GR_FRAME_POINTER,
|
||
#else
|
||
GR_HARD_FRAME_POINTER,
|
||
#endif
|
||
#if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
|
||
#if HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM
|
||
GR_ARG_POINTER = GR_HARD_FRAME_POINTER,
|
||
#else
|
||
GR_ARG_POINTER,
|
||
#endif
|
||
#endif
|
||
GR_VIRTUAL_INCOMING_ARGS,
|
||
GR_VIRTUAL_STACK_ARGS,
|
||
GR_VIRTUAL_STACK_DYNAMIC,
|
||
GR_VIRTUAL_OUTGOING_ARGS,
|
||
GR_VIRTUAL_CFA,
|
||
|
||
GR_MAX
|
||
};
|
||
|
||
/* Pointers to standard pieces of rtx are stored here. */
|
||
extern GTY(()) rtx global_rtl[GR_MAX];
|
||
|
||
/* Standard pieces of rtx, to be substituted directly into things. */
|
||
#define pc_rtx (global_rtl[GR_PC])
|
||
#define cc0_rtx (global_rtl[GR_CC0])
|
||
|
||
/* All references to certain hard regs, except those created
|
||
by allocating pseudo regs into them (when that's possible),
|
||
go through these unique rtx objects. */
|
||
#define stack_pointer_rtx (global_rtl[GR_STACK_POINTER])
|
||
#define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER])
|
||
#define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER])
|
||
#define arg_pointer_rtx (global_rtl[GR_ARG_POINTER])
|
||
|
||
extern GTY(()) rtx pic_offset_table_rtx;
|
||
extern GTY(()) rtx static_chain_rtx;
|
||
extern GTY(()) rtx static_chain_incoming_rtx;
|
||
extern GTY(()) rtx return_address_pointer_rtx;
|
||
|
||
/* Include the RTL generation functions. */
|
||
|
||
#ifndef NO_GENRTL_H
|
||
#include "genrtl.h"
|
||
#endif
|
||
|
||
/* There are some RTL codes that require special attention; the
|
||
generation functions included above do the raw handling. If you
|
||
add to this list, modify special_rtx in gengenrtl.c as well. You
|
||
should also modify gen_rtx to use the special function. */
|
||
|
||
extern rtx gen_rtx_CONST_INT (enum machine_mode, HOST_WIDE_INT);
|
||
extern rtx gen_rtx_CONST_VECTOR (enum machine_mode, rtvec);
|
||
extern rtx gen_raw_REG (enum machine_mode, int);
|
||
extern rtx gen_rtx_REG (enum machine_mode, unsigned);
|
||
extern rtx gen_rtx_SUBREG (enum machine_mode, rtx, int);
|
||
extern rtx gen_rtx_MEM (enum machine_mode, rtx);
|
||
|
||
extern rtx gen_lowpart_SUBREG (enum machine_mode, rtx);
|
||
|
||
/* We need the cast here to ensure that we get the same result both with
|
||
and without prototypes. */
|
||
#define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (HOST_WIDE_INT) (N))
|
||
|
||
/* Virtual registers are used during RTL generation to refer to locations into
|
||
the stack frame when the actual location isn't known until RTL generation
|
||
is complete. The routine instantiate_virtual_regs replaces these with
|
||
the proper value, which is normally {frame,arg,stack}_pointer_rtx plus
|
||
a constant. */
|
||
|
||
#define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER)
|
||
|
||
/* This points to the first word of the incoming arguments passed on the stack,
|
||
either by the caller or by the callee when pretending it was passed by the
|
||
caller. */
|
||
|
||
#define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS])
|
||
|
||
#define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER)
|
||
|
||
/* If FRAME_GROWS_DOWNWARD, this points to immediately above the first
|
||
variable on the stack. Otherwise, it points to the first variable on
|
||
the stack. */
|
||
|
||
#define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS])
|
||
|
||
#define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1)
|
||
|
||
/* This points to the location of dynamically-allocated memory on the stack
|
||
immediately after the stack pointer has been adjusted by the amount
|
||
desired. */
|
||
|
||
#define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC])
|
||
|
||
#define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2)
|
||
|
||
/* This points to the location in the stack at which outgoing arguments should
|
||
be written when the stack is pre-pushed (arguments pushed using push
|
||
insns always use sp). */
|
||
|
||
#define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS])
|
||
|
||
#define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3)
|
||
|
||
/* This points to the Canonical Frame Address of the function. This
|
||
should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET,
|
||
but is calculated relative to the arg pointer for simplicity; the
|
||
frame pointer nor stack pointer are necessarily fixed relative to
|
||
the CFA until after reload. */
|
||
|
||
#define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA])
|
||
|
||
#define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4)
|
||
|
||
#define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4)
|
||
|
||
/* Nonzero if REGNUM is a pointer into the stack frame. */
|
||
#define REGNO_PTR_FRAME_P(REGNUM) \
|
||
((REGNUM) == STACK_POINTER_REGNUM \
|
||
|| (REGNUM) == FRAME_POINTER_REGNUM \
|
||
|| (REGNUM) == HARD_FRAME_POINTER_REGNUM \
|
||
|| (REGNUM) == ARG_POINTER_REGNUM \
|
||
|| ((REGNUM) >= FIRST_VIRTUAL_REGISTER \
|
||
&& (REGNUM) <= LAST_VIRTUAL_REGISTER))
|
||
|
||
/* REGNUM never really appearing in the INSN stream. */
|
||
#define INVALID_REGNUM (~(unsigned int) 0)
|
||
|
||
extern rtx output_constant_def (tree, int);
|
||
extern rtx lookup_constant_def (tree);
|
||
|
||
/* Called from integrate.c when a deferred constant is inlined. */
|
||
extern void notice_rtl_inlining_of_deferred_constant (void);
|
||
|
||
/* Nonzero after the second flow pass has completed.
|
||
Set to 1 or 0 by toplev.c */
|
||
extern int flow2_completed;
|
||
|
||
/* Nonzero after end of reload pass.
|
||
Set to 1 or 0 by reload1.c. */
|
||
|
||
extern int reload_completed;
|
||
|
||
/* Nonzero after thread_prologue_and_epilogue_insns has run. */
|
||
extern int epilogue_completed;
|
||
|
||
/* Set to 1 while reload_as_needed is operating.
|
||
Required by some machines to handle any generated moves differently. */
|
||
|
||
extern int reload_in_progress;
|
||
|
||
/* If this is nonzero, we do not bother generating VOLATILE
|
||
around volatile memory references, and we are willing to
|
||
output indirect addresses. If cse is to follow, we reject
|
||
indirect addresses so a useful potential cse is generated;
|
||
if it is used only once, instruction combination will produce
|
||
the same indirect address eventually. */
|
||
extern int cse_not_expected;
|
||
|
||
/* Set to nonzero before life analysis to indicate that it is unsafe to
|
||
generate any new pseudo registers. */
|
||
extern int no_new_pseudos;
|
||
|
||
/* Translates rtx code to tree code, for those codes needed by
|
||
REAL_ARITHMETIC. The function returns an int because the caller may not
|
||
know what `enum tree_code' means. */
|
||
|
||
extern int rtx_to_tree_code (enum rtx_code);
|
||
|
||
/* In cse.c */
|
||
struct cse_basic_block_data;
|
||
|
||
/* Return the right cost to give to an operation
|
||
to make the cost of the corresponding register-to-register instruction
|
||
N times that of a fast register-to-register instruction. */
|
||
#define COSTS_N_INSNS(N) ((N) * 4)
|
||
|
||
/* Maximum cost of an rtl expression. This value has the special meaning
|
||
not to use an rtx with this cost under any circumstances. */
|
||
#define MAX_COST INT_MAX
|
||
|
||
extern int rtx_cost (rtx, enum rtx_code);
|
||
extern int address_cost (rtx, enum machine_mode);
|
||
extern int delete_trivially_dead_insns (rtx, int);
|
||
#ifdef BUFSIZ
|
||
extern int cse_main (rtx, int, int, FILE *);
|
||
#endif
|
||
extern void cse_end_of_basic_block (rtx, struct cse_basic_block_data *,
|
||
int, int, int);
|
||
extern void cse_condition_code_reg (void);
|
||
|
||
/* In jump.c */
|
||
extern int comparison_dominates_p (enum rtx_code, enum rtx_code);
|
||
extern int condjump_p (rtx);
|
||
extern int any_condjump_p (rtx);
|
||
extern int any_uncondjump_p (rtx);
|
||
extern int safe_to_remove_jump_p (rtx);
|
||
extern rtx pc_set (rtx);
|
||
extern rtx condjump_label (rtx);
|
||
extern int simplejump_p (rtx);
|
||
extern int returnjump_p (rtx);
|
||
extern int onlyjump_p (rtx);
|
||
extern int only_sets_cc0_p (rtx);
|
||
extern int sets_cc0_p (rtx);
|
||
extern int invert_jump_1 (rtx, rtx);
|
||
extern int invert_jump (rtx, rtx, int);
|
||
extern int rtx_renumbered_equal_p (rtx, rtx);
|
||
extern int true_regnum (rtx);
|
||
extern unsigned int reg_or_subregno (rtx);
|
||
extern int redirect_jump_1 (rtx, rtx);
|
||
extern int redirect_jump (rtx, rtx, int);
|
||
extern void rebuild_jump_labels (rtx);
|
||
extern enum rtx_code reversed_comparison_code (rtx, rtx);
|
||
extern enum rtx_code reversed_comparison_code_parts (enum rtx_code,
|
||
rtx, rtx, rtx);
|
||
extern void delete_for_peephole (rtx, rtx);
|
||
extern int condjump_in_parallel_p (rtx);
|
||
extern void never_reached_warning (rtx, rtx);
|
||
extern void purge_line_number_notes (rtx);
|
||
extern void copy_loop_headers (rtx);
|
||
|
||
/* In emit-rtl.c. */
|
||
extern int max_reg_num (void);
|
||
extern int max_label_num (void);
|
||
extern int get_first_label_num (void);
|
||
extern void delete_insns_since (rtx);
|
||
extern void mark_reg_pointer (rtx, int);
|
||
extern void mark_user_reg (rtx);
|
||
extern void reset_used_flags (rtx);
|
||
extern void set_used_flags (rtx);
|
||
extern void reorder_insns (rtx, rtx, rtx);
|
||
extern void reorder_insns_nobb (rtx, rtx, rtx);
|
||
extern int get_max_uid (void);
|
||
extern int in_sequence_p (void);
|
||
extern void force_next_line_note (void);
|
||
extern void init_emit (void);
|
||
extern void init_emit_once (int);
|
||
extern void push_topmost_sequence (void);
|
||
extern void pop_topmost_sequence (void);
|
||
extern int subreg_realpart_p (rtx);
|
||
extern void reverse_comparison (rtx);
|
||
extern void set_new_first_and_last_insn (rtx, rtx);
|
||
extern void set_new_last_label_num (int);
|
||
extern void unshare_all_rtl_again (rtx);
|
||
extern void unshare_all_rtl_in_chain (rtx);
|
||
extern void verify_rtl_sharing (void);
|
||
extern void set_first_insn (rtx);
|
||
extern void set_last_insn (rtx);
|
||
extern void link_cc0_insns (rtx);
|
||
extern void add_insn (rtx);
|
||
extern void add_insn_before (rtx, rtx);
|
||
extern void add_insn_after (rtx, rtx);
|
||
extern void remove_insn (rtx);
|
||
extern void reorder_insns_with_line_notes (rtx, rtx, rtx);
|
||
extern void emit_insn_after_with_line_notes (rtx, rtx, rtx);
|
||
extern enum rtx_code classify_insn (rtx);
|
||
extern rtx emit (rtx);
|
||
/* Query and clear/ restore no_line_numbers. This is used by the
|
||
switch / case handling in stmt.c to give proper line numbers in
|
||
warnings about unreachable code. */
|
||
int force_line_numbers (void);
|
||
void restore_line_number_status (int old_value);
|
||
extern void renumber_insns (FILE *);
|
||
extern void remove_unnecessary_notes (void);
|
||
extern rtx delete_insn (rtx);
|
||
extern void delete_insn_chain (rtx, rtx);
|
||
extern rtx unlink_insn_chain (rtx, rtx);
|
||
extern rtx delete_insn_and_edges (rtx);
|
||
extern void delete_insn_chain_and_edges (rtx, rtx);
|
||
|
||
/* In combine.c */
|
||
extern int combine_instructions (rtx, unsigned int);
|
||
extern unsigned int extended_count (rtx, enum machine_mode, int);
|
||
extern rtx remove_death (unsigned int, rtx);
|
||
#ifdef BUFSIZ
|
||
extern void dump_combine_stats (FILE *);
|
||
extern void dump_combine_total_stats (FILE *);
|
||
#endif
|
||
/* In web.c */
|
||
extern void web_main (void);
|
||
|
||
/* In sched.c. */
|
||
#ifdef BUFSIZ
|
||
extern void schedule_insns (FILE *);
|
||
extern void schedule_ebbs (FILE *);
|
||
#endif
|
||
extern void fix_sched_param (const char *, const char *);
|
||
|
||
/* In print-rtl.c */
|
||
extern const char *print_rtx_head;
|
||
extern void debug_rtx (rtx);
|
||
extern void debug_rtx_list (rtx, int);
|
||
extern void debug_rtx_range (rtx, rtx);
|
||
extern rtx debug_rtx_find (rtx, int);
|
||
#ifdef BUFSIZ
|
||
extern void print_mem_expr (FILE *, tree);
|
||
extern void print_rtl (FILE *, rtx);
|
||
extern void print_simple_rtl (FILE *, rtx);
|
||
extern int print_rtl_single (FILE *, rtx);
|
||
extern void print_inline_rtx (FILE *, rtx, int);
|
||
#endif
|
||
|
||
/* In loop.c */
|
||
extern void init_loop (void);
|
||
extern rtx libcall_other_reg (rtx, rtx);
|
||
#ifdef BUFSIZ
|
||
extern void loop_optimize (rtx, FILE *, int);
|
||
#endif
|
||
extern void branch_target_load_optimize (rtx, bool);
|
||
extern void record_excess_regs (rtx, rtx, rtx *);
|
||
|
||
/* In function.c */
|
||
extern void reposition_prologue_and_epilogue_notes (rtx);
|
||
extern void thread_prologue_and_epilogue_insns (rtx);
|
||
extern int prologue_epilogue_contains (rtx);
|
||
extern int sibcall_epilogue_contains (rtx);
|
||
extern void preserve_rtl_expr_result (rtx);
|
||
extern void mark_temp_addr_taken (rtx);
|
||
extern void update_temp_slot_address (rtx, rtx);
|
||
extern void purge_addressof (rtx);
|
||
extern void purge_hard_subreg_sets (rtx);
|
||
|
||
/* In stmt.c */
|
||
extern void set_file_and_line_for_stmt (location_t);
|
||
extern void expand_null_return (void);
|
||
extern void expand_naked_return (void);
|
||
extern void emit_jump (rtx);
|
||
extern int preserve_subexpressions_p (void);
|
||
|
||
/* In expr.c */
|
||
extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT,
|
||
unsigned int, int);
|
||
|
||
/* In flow.c */
|
||
extern void recompute_reg_usage (rtx, int);
|
||
extern int initialize_uninitialized_subregs (void);
|
||
extern void delete_dead_jumptables (void);
|
||
#ifdef BUFSIZ
|
||
extern void print_rtl_with_bb (FILE *, rtx);
|
||
extern void dump_flow_info (FILE *);
|
||
#endif
|
||
|
||
/* In expmed.c */
|
||
extern void init_expmed (void);
|
||
extern void expand_inc (rtx, rtx);
|
||
extern void expand_dec (rtx, rtx);
|
||
extern rtx expand_mult_highpart (enum machine_mode, rtx,
|
||
unsigned HOST_WIDE_INT, rtx, int, int);
|
||
|
||
/* In gcse.c */
|
||
extern bool can_copy_p (enum machine_mode);
|
||
extern rtx fis_get_condition (rtx);
|
||
#ifdef BUFSIZ
|
||
extern int gcse_main (rtx, FILE *);
|
||
extern int bypass_jumps (FILE *);
|
||
#endif
|
||
|
||
/* In global.c */
|
||
extern void mark_elimination (int, int);
|
||
#ifdef BUFSIZ
|
||
extern int global_alloc (FILE *);
|
||
extern void dump_global_regs (FILE *);
|
||
#endif
|
||
#ifdef HARD_CONST
|
||
/* Yes, this ifdef is silly, but HARD_REG_SET is not always defined. */
|
||
extern void retry_global_alloc (int, HARD_REG_SET);
|
||
#endif
|
||
extern void build_insn_chain (rtx);
|
||
|
||
/* In regclass.c */
|
||
extern int reg_classes_intersect_p (enum reg_class, enum reg_class);
|
||
extern int reg_class_subset_p (enum reg_class, enum reg_class);
|
||
extern void globalize_reg (int);
|
||
extern void init_reg_modes_once (void);
|
||
extern void init_regs (void);
|
||
extern void init_fake_stack_mems (void);
|
||
extern void init_reg_sets (void);
|
||
extern void regset_release_memory (void);
|
||
extern void regclass_init (void);
|
||
extern void regclass (rtx, int, FILE *);
|
||
extern void reg_scan (rtx, unsigned int, int);
|
||
extern void reg_scan_update (rtx, rtx, unsigned int);
|
||
extern void fix_register (const char *, int, int);
|
||
extern void init_subregs_of_mode (void);
|
||
extern void record_subregs_of_mode (rtx);
|
||
#ifdef HARD_CONST
|
||
extern void cannot_change_mode_set_regs (HARD_REG_SET *,
|
||
enum machine_mode, unsigned int);
|
||
#endif
|
||
extern bool invalid_mode_change_p (unsigned int, enum reg_class,
|
||
enum machine_mode);
|
||
|
||
extern int delete_null_pointer_checks (rtx);
|
||
|
||
/* In regmove.c */
|
||
#ifdef BUFSIZ
|
||
extern void regmove_optimize (rtx, int, FILE *);
|
||
#endif
|
||
extern void combine_stack_adjustments (void);
|
||
|
||
/* In reorg.c */
|
||
#ifdef BUFSIZ
|
||
extern void dbr_schedule (rtx, FILE *);
|
||
#endif
|
||
|
||
/* In local-alloc.c */
|
||
#ifdef BUFSIZ
|
||
extern void dump_local_alloc (FILE *);
|
||
#endif
|
||
extern int local_alloc (void);
|
||
extern int function_invariant_p (rtx);
|
||
|
||
/* In profile.c */
|
||
extern void init_branch_prob (void);
|
||
extern void branch_prob (void);
|
||
extern void end_branch_prob (void);
|
||
|
||
/* In reg-stack.c */
|
||
#ifdef BUFSIZ
|
||
extern bool reg_to_stack (rtx, FILE *);
|
||
#endif
|
||
|
||
/* In calls.c */
|
||
enum libcall_type
|
||
{
|
||
LCT_NORMAL = 0,
|
||
LCT_CONST = 1,
|
||
LCT_PURE = 2,
|
||
LCT_CONST_MAKE_BLOCK = 3,
|
||
LCT_PURE_MAKE_BLOCK = 4,
|
||
LCT_NORETURN = 5,
|
||
LCT_THROW = 6,
|
||
LCT_ALWAYS_RETURN = 7,
|
||
LCT_RETURNS_TWICE = 8
|
||
};
|
||
|
||
extern void emit_library_call (rtx, enum libcall_type, enum machine_mode, int,
|
||
...);
|
||
extern rtx emit_library_call_value (rtx, rtx, enum libcall_type,
|
||
enum machine_mode, int, ...);
|
||
|
||
/* In unroll.c */
|
||
extern int set_dominates_use (int, int, int, rtx, rtx);
|
||
|
||
/* In varasm.c */
|
||
extern int in_data_section (void);
|
||
extern void init_varasm_once (void);
|
||
|
||
/* In rtl.c */
|
||
extern void init_rtl (void);
|
||
extern void traverse_md_constants (int (*) (void **, void *), void *);
|
||
struct md_constant { char *name, *value; };
|
||
|
||
#ifdef BUFSIZ
|
||
extern int read_skip_spaces (FILE *);
|
||
extern rtx read_rtx (FILE *);
|
||
#endif
|
||
|
||
extern const char *read_rtx_filename;
|
||
extern int read_rtx_lineno;
|
||
|
||
/* Redefine abort to report an internal error w/o coredump, and
|
||
reporting the location of the error in the source file. This logic
|
||
is duplicated in rtl.h and tree.h because every file that needs the
|
||
special abort includes one or both. toplev.h gets too few files,
|
||
system.h gets too many. */
|
||
|
||
extern void fancy_abort (const char *, int, const char *)
|
||
ATTRIBUTE_NORETURN;
|
||
#define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
|
||
|
||
/* In alias.c */
|
||
extern void clear_reg_alias_info (rtx);
|
||
extern rtx canon_rtx (rtx);
|
||
extern int true_dependence (rtx, enum machine_mode, rtx, int (*)(rtx, int));
|
||
extern rtx get_addr (rtx);
|
||
extern int canon_true_dependence (rtx, enum machine_mode, rtx, rtx,
|
||
int (*)(rtx, int));
|
||
extern int read_dependence (rtx, rtx);
|
||
extern int anti_dependence (rtx, rtx);
|
||
extern int output_dependence (rtx, rtx);
|
||
extern int unchanging_anti_dependence (rtx, rtx);
|
||
extern void mark_constant_function (void);
|
||
extern void init_alias_once (void);
|
||
extern void init_alias_analysis (void);
|
||
extern void end_alias_analysis (void);
|
||
extern rtx addr_side_effect_eval (rtx, int, int);
|
||
extern bool memory_modified_in_insn_p (rtx, rtx);
|
||
extern rtx find_base_term (rtx);
|
||
extern rtx get_reg_known_value (unsigned int);
|
||
extern bool get_reg_known_equiv_p (unsigned int);
|
||
|
||
/* In sibcall.c */
|
||
typedef enum {
|
||
sibcall_use_normal = 1,
|
||
sibcall_use_tail_recursion,
|
||
sibcall_use_sibcall
|
||
} sibcall_use_t;
|
||
|
||
extern void optimize_sibling_and_tail_recursive_calls (void);
|
||
extern void replace_call_placeholder (rtx, sibcall_use_t);
|
||
|
||
#ifdef STACK_REGS
|
||
extern int stack_regs_mentioned (rtx insn);
|
||
#endif
|
||
|
||
/* In toplev.c */
|
||
extern GTY(()) rtx stack_limit_rtx;
|
||
|
||
/* In regrename.c */
|
||
extern void regrename_optimize (void);
|
||
extern void copyprop_hardreg_forward (void);
|
||
|
||
/* In ifcvt.c */
|
||
extern void if_convert (int);
|
||
|
||
/* In predict.c */
|
||
extern void invert_br_probabilities (rtx);
|
||
extern bool expensive_function_p (int);
|
||
/* In tracer.c */
|
||
extern void tracer (unsigned int);
|
||
|
||
#endif /* ! GCC_RTL_H */
|