diff options
author | obrien <obrien@FreeBSD.org> | 2002-02-01 18:16:02 +0000 |
---|---|---|
committer | obrien <obrien@FreeBSD.org> | 2002-02-01 18:16:02 +0000 |
commit | c9ab9ae440a8066b2c2b85b157b1fdadcf09916a (patch) | |
tree | 086d9d6c8fbd4fc8fe4495059332f66bc0f8d12b /contrib/gcc/params.def | |
parent | 2ecfd8bd04b63f335c1ec6295740a4bfd97a4fa6 (diff) | |
download | FreeBSD-src-c9ab9ae440a8066b2c2b85b157b1fdadcf09916a.zip FreeBSD-src-c9ab9ae440a8066b2c2b85b157b1fdadcf09916a.tar.gz |
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0.
These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
Diffstat (limited to 'contrib/gcc/params.def')
-rw-r--r-- | contrib/gcc/params.def | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/contrib/gcc/params.def b/contrib/gcc/params.def new file mode 100644 index 0000000..2a1d3a3 --- /dev/null +++ b/contrib/gcc/params.def @@ -0,0 +1,95 @@ +/* params.def - Run-time parameters. + Copyright (C) 2001 Free Software Foundation, Inc. + Written by Mark Mitchell <mark@codesourcery.com>. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 2, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING. If not, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. + +*/ + +/* This file contains definitions for language-independent + parameters. The DEFPARAM macro takes 4 arguments: + + - The enumeral corresponding to this parameter. + + - The name that can be used to set this parameter using the + command-line option `--param <name>=<value>'. + + - A help string explaining how the parameter is used. + + - A default value for the parameter. + + Be sure to add an entry to invoke.texi summarizing the parameter. */ + +/* The maximum number of instructions accepted for inlining a + function. Increasing values mean more agressive inlining. + This affects currently only functions explicitly marked as + inline (or methods defined within the class definition for C++). + The original default value of 10000 was arbitrary and caused + significant compile-time performance regressions. */ +DEFPARAM (PARAM_MAX_INLINE_INSNS, + "max-inline-insns", + "The maximum number of instructions in a function that is eligible for inlining", + 600) + +/* The maximum number of instructions to consider when looking for an + instruction to fill a delay slot. If more than this arbitrary + number of instructions is searched, the time savings from filling + the delay slot will be minimal so stop searching. Increasing + values mean more aggressive optimization, making the compile time + increase with probably small improvement in executable run time. */ +DEFPARAM (PARAM_MAX_DELAY_SLOT_INSN_SEARCH, + "max-delay-slot-insn-search", + "The maximum number of instructions to consider to fill a delay slot", + 100) + +/* When trying to fill delay slots, the maximum number of instructions + to consider when searching for a block with valid live register + information. Increasing this arbitrarily chosen value means more + aggressive optimization, increasing the compile time. This + parameter should be removed when the delay slot code is rewritten + to maintain the control-flow graph. */ +DEFPARAM(PARAM_MAX_DELAY_SLOT_LIVE_SEARCH, + "max-delay-slot-live-search", + "The maximum number of instructions to consider to find accurate live register information", + 333) + +/* This parameter limits the number of branch elements that the + scheduler will track anti-dependencies through without resetting + the tracking mechanism. Large functions with few calls or barriers + can generate lists containing many 1000's of dependencies. Generally + the compiler either uses all available memory, or runs for far too long. */ +DEFPARAM(PARAM_MAX_PENDING_LIST_LENGTH, + "max-pending-list-length", + "The maximum length of scheduling's pending operations list", + 32) + +/* The GCSE optimization will be disabled if it would require + significantly more memory than this value. */ +DEFPARAM(PARAM_MAX_GCSE_MEMORY, + "max-gcse-memory", + "The maximum amount of memory to be allocated by GCSE", + 50 * 1024 * 1024) +/* The number of repetitions of copy/const prop and PRE to run. */ +DEFPARAM(PARAM_MAX_GCSE_PASSES, + "max-gcse-passes", + "The maximum number of passes to make when doing GCSE", + 1) +/* +Local variables: +mode:c +End: */ |