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96 lines
3.8 KiB
Modula-2
96 lines
3.8 KiB
Modula-2
/* params.def - Run-time parameters.
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Copyright (C) 2001 Free Software Foundation, Inc.
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Written by Mark Mitchell <mark@codesourcery.com>.
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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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*/
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/* This file contains definitions for language-independent
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parameters. The DEFPARAM macro takes 4 arguments:
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- The enumeral corresponding to this parameter.
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- The name that can be used to set this parameter using the
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command-line option `--param <name>=<value>'.
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- A help string explaining how the parameter is used.
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- A default value for the parameter.
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Be sure to add an entry to invoke.texi summarizing the parameter. */
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/* The maximum number of instructions accepted for inlining a
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function. Increasing values mean more agressive inlining.
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This affects currently only functions explicitly marked as
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inline (or methods defined within the class definition for C++).
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The original default value of 10000 was arbitrary and caused
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significant compile-time performance regressions. */
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DEFPARAM (PARAM_MAX_INLINE_INSNS,
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"max-inline-insns",
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"The maximum number of instructions in a function that is eligible for inlining",
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600)
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/* The maximum number of instructions to consider when looking for an
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instruction to fill a delay slot. If more than this arbitrary
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number of instructions is searched, the time savings from filling
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the delay slot will be minimal so stop searching. Increasing
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values mean more aggressive optimization, making the compile time
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increase with probably small improvement in executable run time. */
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DEFPARAM (PARAM_MAX_DELAY_SLOT_INSN_SEARCH,
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"max-delay-slot-insn-search",
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"The maximum number of instructions to consider to fill a delay slot",
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100)
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/* When trying to fill delay slots, the maximum number of instructions
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to consider when searching for a block with valid live register
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information. Increasing this arbitrarily chosen value means more
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aggressive optimization, increasing the compile time. This
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parameter should be removed when the delay slot code is rewritten
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to maintain the control-flow graph. */
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DEFPARAM(PARAM_MAX_DELAY_SLOT_LIVE_SEARCH,
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"max-delay-slot-live-search",
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"The maximum number of instructions to consider to find accurate live register information",
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333)
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/* This parameter limits the number of branch elements that the
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scheduler will track anti-dependencies through without resetting
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the tracking mechanism. Large functions with few calls or barriers
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can generate lists containing many 1000's of dependencies. Generally
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the compiler either uses all available memory, or runs for far too long. */
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DEFPARAM(PARAM_MAX_PENDING_LIST_LENGTH,
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"max-pending-list-length",
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"The maximum length of scheduling's pending operations list",
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32)
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/* The GCSE optimization will be disabled if it would require
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significantly more memory than this value. */
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DEFPARAM(PARAM_MAX_GCSE_MEMORY,
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"max-gcse-memory",
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"The maximum amount of memory to be allocated by GCSE",
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50 * 1024 * 1024)
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/* The number of repetitions of copy/const prop and PRE to run. */
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DEFPARAM(PARAM_MAX_GCSE_PASSES,
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"max-gcse-passes",
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"The maximum number of passes to make when doing GCSE",
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1)
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/*
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Local variables:
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mode:c
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End: */
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