1275970Scy/* params.h - Run-time parameters. 2275970Scy Copyright (C) 2001, 2003, 2004, 2005 Free Software Foundation, Inc. 3275970Scy Written by Mark Mitchell <mark@codesourcery.com>. 4275970Scy 5275970ScyThis file is part of GCC. 6275970Scy 7275970ScyGCC is free software; you can redistribute it and/or modify it under 8275970Scythe terms of the GNU General Public License as published by the Free 9275970ScySoftware Foundation; either version 2, or (at your option) any later 10275970Scyversion. 11275970Scy 12275970ScyGCC is distributed in the hope that it will be useful, but WITHOUT ANY 13275970ScyWARRANTY; without even the implied warranty of MERCHANTABILITY or 14275970ScyFITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15275970Scyfor more details. 16275970Scy 17275970ScyYou should have received a copy of the GNU General Public License 18275970Scyalong with GCC; see the file COPYING. If not, write to the Free 19275970ScySoftware Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 20275970Scy02110-1301, USA. 21275970Scy 22275970Scy*/ 23275970Scy 24275970Scy/* This module provides a means for setting integral parameters 25275970Scy dynamically. Instead of encoding magic numbers in various places, 26275970Scy use this module to organize all the magic numbers in a single 27275970Scy place. The values of the parameters can be set on the 28275970Scy command-line, thereby providing a way to control the amount of 29275970Scy effort spent on particular optimization passes, or otherwise tune 30275970Scy the behavior of the compiler. 31275970Scy 32275970Scy Since their values can be set on the command-line, these parameters 33275970Scy should not be used for non-dynamic memory allocation. */ 34275970Scy 35275970Scy#ifndef GCC_PARAMS_H 36275970Scy#define GCC_PARAMS_H 37275970Scy 38275970Scy/* No parameter shall have this value. */ 39275970Scy 40275970Scy#define INVALID_PARAM_VAL (-1) 41275970Scy 42275970Scy/* The information associated with each parameter. */ 43275970Scy 44275970Scytypedef struct param_info 45275970Scy{ 46275970Scy /* The name used with the `--param <name>=<value>' switch to set this 47275970Scy value. */ 48275970Scy const char *const option; 49275970Scy /* The associated value. */ 50275970Scy int value; 51275970Scy 52275970Scy /* Minimum acceptable value. */ 53275970Scy int min_value; 54275970Scy 55275970Scy /* Maximum acceptable value, if greater than minimum */ 56275970Scy int max_value; 57275970Scy 58275970Scy /* A short description of the option. */ 59275970Scy const char *const help; 60275970Scy} param_info; 61275970Scy 62275970Scy/* An array containing the compiler parameters and their current 63275970Scy values. */ 64275970Scy 65275970Scyextern param_info *compiler_params; 66275970Scy 67275970Scy/* Add the N PARAMS to the current list of compiler parameters. */ 68275970Scy 69275970Scyextern void add_params (const param_info params[], size_t n); 70275970Scy 71275970Scy/* Set the VALUE associated with the parameter given by NAME. */ 72275970Scy 73275970Scyextern void set_param_value (const char *name, int value); 74275970Scy 75275970Scy 76275970Scy/* The parameters in use by language-independent code. */ 77285612Sdelphij 78275970Scytypedef enum compiler_param 79275970Scy{ 80275970Scy#define DEFPARAM(enumerator, option, msgid, default, min, max) \ 81275970Scy enumerator, 82275970Scy#include "params.def" 83275970Scy#undef DEFPARAM 84275970Scy LAST_PARAM 85275970Scy} compiler_param; 86275970Scy 87275970Scy/* The value of the parameter given by ENUM. */ 88275970Scy#define PARAM_VALUE(ENUM) \ 89275970Scy (compiler_params[(int) ENUM].value) 90275970Scy 91275970Scy/* Macros for the various parameters. */ 92275970Scy#define SALIAS_MAX_IMPLICIT_FIELDS \ 93275970Scy PARAM_VALUE (PARAM_SALIAS_MAX_IMPLICIT_FIELDS) 94275970Scy#define SRA_MAX_STRUCTURE_SIZE \ 95275970Scy PARAM_VALUE (PARAM_SRA_MAX_STRUCTURE_SIZE) 96275970Scy#define SRA_MAX_STRUCTURE_COUNT \ 97275970Scy PARAM_VALUE (PARAM_SRA_MAX_STRUCTURE_COUNT) 98275970Scy#define SRA_FIELD_STRUCTURE_RATIO \ 99275970Scy PARAM_VALUE (PARAM_SRA_FIELD_STRUCTURE_RATIO) 100275970Scy#define MAX_INLINE_INSNS_SINGLE \ 101275970Scy PARAM_VALUE (PARAM_MAX_INLINE_INSNS_SINGLE) 102275970Scy#define MAX_INLINE_INSNS \ 103285612Sdelphij PARAM_VALUE (PARAM_MAX_INLINE_INSNS) 104275970Scy#define MAX_INLINE_SLOPE \ 105275970Scy PARAM_VALUE (PARAM_MAX_INLINE_SLOPE) 106275970Scy#define MIN_INLINE_INSNS \ 107275970Scy PARAM_VALUE (PARAM_MIN_INLINE_INSNS) 108275970Scy#define MAX_INLINE_INSNS_AUTO \ 109275970Scy PARAM_VALUE (PARAM_MAX_INLINE_INSNS_AUTO) 110275970Scy#define MAX_VARIABLE_EXPANSIONS \ 111275970Scy PARAM_VALUE (PARAM_MAX_VARIABLE_EXPANSIONS) 112275970Scy#define MAX_DELAY_SLOT_INSN_SEARCH \ 113275970Scy PARAM_VALUE (PARAM_MAX_DELAY_SLOT_INSN_SEARCH) 114275970Scy#define MAX_DELAY_SLOT_LIVE_SEARCH \ 115275970Scy PARAM_VALUE (PARAM_MAX_DELAY_SLOT_LIVE_SEARCH) 116275970Scy#define MAX_PENDING_LIST_LENGTH \ 117275970Scy PARAM_VALUE (PARAM_MAX_PENDING_LIST_LENGTH) 118275970Scy#define MAX_GCSE_MEMORY \ 119275970Scy ((size_t) PARAM_VALUE (PARAM_MAX_GCSE_MEMORY)) 120275970Scy#define MAX_GCSE_PASSES \ 121275970Scy PARAM_VALUE (PARAM_MAX_GCSE_PASSES) 122275970Scy#define GCSE_AFTER_RELOAD_PARTIAL_FRACTION \ 123275970Scy PARAM_VALUE (PARAM_GCSE_AFTER_RELOAD_PARTIAL_FRACTION) 124275970Scy#define GCSE_AFTER_RELOAD_CRITICAL_FRACTION \ 125275970Scy PARAM_VALUE (PARAM_GCSE_AFTER_RELOAD_CRITICAL_FRACTION) 126275970Scy#define MAX_UNROLLED_INSNS \ 127275970Scy PARAM_VALUE (PARAM_MAX_UNROLLED_INSNS) 128275970Scy#define MAX_SMS_LOOP_NUMBER \ 129275970Scy PARAM_VALUE (PARAM_MAX_SMS_LOOP_NUMBER) 130275970Scy#define SMS_MAX_II_FACTOR \ 131275970Scy PARAM_VALUE (PARAM_SMS_MAX_II_FACTOR) 132275970Scy#define SMS_DFA_HISTORY \ 133275970Scy PARAM_VALUE (PARAM_SMS_DFA_HISTORY) 134275970Scy#define SMS_LOOP_AVERAGE_COUNT_THRESHOLD \ 135275970Scy PARAM_VALUE (PARAM_SMS_LOOP_AVERAGE_COUNT_THRESHOLD) 136275970Scy#define GLOBAL_VAR_THRESHOLD \ 137275970Scy PARAM_VALUE (PARAM_GLOBAL_VAR_THRESHOLD) 138275970Scy#define MAX_ALIASED_VOPS \ 139275970Scy PARAM_VALUE (PARAM_MAX_ALIASED_VOPS) 140275970Scy#define INTEGER_SHARE_LIMIT \ 141275970Scy PARAM_VALUE (PARAM_INTEGER_SHARE_LIMIT) 142275970Scy#define MAX_LAST_VALUE_RTL \ 143275970Scy PARAM_VALUE (PARAM_MAX_LAST_VALUE_RTL) 144275970Scy#define MIN_VIRTUAL_MAPPINGS \ 145275970Scy PARAM_VALUE (PARAM_MIN_VIRTUAL_MAPPINGS) 146275970Scy#define VIRTUAL_MAPPINGS_TO_SYMS_RATIO \ 147275970Scy PARAM_VALUE (PARAM_VIRTUAL_MAPPINGS_TO_SYMS_RATIO) 148275970Scy#define MAX_FIELDS_FOR_FIELD_SENSITIVE \ 149275970Scy ((size_t) PARAM_VALUE (PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE)) 150275970Scy#define MAX_SCHED_READY_INSNS \ 151275970Scy PARAM_VALUE (PARAM_MAX_SCHED_READY_INSNS) 152275970Scy#endif /* ! GCC_PARAMS_H */ 153275970Scy