1331722Seadler/* params.h - Run-time parameters. 2341477Svmaffione Copyright (C) 2001, 2003, 2004, 2005 Free Software Foundation, Inc. 3341477Svmaffione Written by Mark Mitchell <mark@codesourcery.com>. 4261909Sluigi 5261909SluigiThis file is part of GCC. 6261909Sluigi 7261909SluigiGCC is free software; you can redistribute it and/or modify it under 8261909Sluigithe terms of the GNU General Public License as published by the Free 9261909SluigiSoftware Foundation; either version 2, or (at your option) any later 10261909Sluigiversion. 11261909Sluigi 12261909SluigiGCC is distributed in the hope that it will be useful, but WITHOUT ANY 13261909SluigiWARRANTY; without even the implied warranty of MERCHANTABILITY or 14261909SluigiFITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15261909Sluigifor more details. 16261909Sluigi 17261909SluigiYou should have received a copy of the GNU General Public License 18261909Sluigialong with GCC; see the file COPYING. If not, write to the Free 19261909SluigiSoftware Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 20261909Sluigi02110-1301, USA. 21261909Sluigi 22261909Sluigi*/ 23261909Sluigi 24261909Sluigi/* This module provides a means for setting integral parameters 25261909Sluigi dynamically. Instead of encoding magic numbers in various places, 26261909Sluigi use this module to organize all the magic numbers in a single 27261909Sluigi place. The values of the parameters can be set on the 28261909Sluigi command-line, thereby providing a way to control the amount of 29261909Sluigi effort spent on particular optimization passes, or otherwise tune 30261909Sluigi the behavior of the compiler. 31261909Sluigi 32261909Sluigi Since their values can be set on the command-line, these parameters 33261909Sluigi should not be used for non-dynamic memory allocation. */ 34261909Sluigi 35261909Sluigi#ifndef GCC_PARAMS_H 36261909Sluigi#define GCC_PARAMS_H 37261909Sluigi 38261909Sluigi/* No parameter shall have this value. */ 39261909Sluigi 40261909Sluigi#define INVALID_PARAM_VAL (-1) 41261909Sluigi 42261909Sluigi/* The information associated with each parameter. */ 43261909Sluigi 44261909Sluigitypedef struct param_info 45261909Sluigi{ 46261909Sluigi /* The name used with the `--param <name>=<value>' switch to set this 47261909Sluigi value. */ 48261909Sluigi const char *const option; 49261909Sluigi /* The associated value. */ 50261909Sluigi int value; 51261909Sluigi 52261909Sluigi /* Minimum acceptable value. */ 53261909Sluigi int min_value; 54261909Sluigi 55261909Sluigi /* Maximum acceptable value, if greater than minimum */ 56261909Sluigi int max_value; 57261909Sluigi 58341477Svmaffione /* A short description of the option. */ 59341477Svmaffione const char *const help; 60341477Svmaffione} param_info; 61261909Sluigi 62261909Sluigi/* An array containing the compiler parameters and their current 63261909Sluigi values. */ 64261909Sluigi 65261909Sluigiextern param_info *compiler_params; 66261909Sluigi 67261909Sluigi/* Add the N PARAMS to the current list of compiler parameters. */ 68261909Sluigi 69261909Sluigiextern void add_params (const param_info params[], size_t n); 70261909Sluigi 71261909Sluigi/* Set the VALUE associated with the parameter given by NAME. */ 72261909Sluigi 73261909Sluigiextern void set_param_value (const char *name, int value); 74261909Sluigi 75261909Sluigi 76261909Sluigi/* The parameters in use by language-independent code. */ 77261909Sluigi 78341477Svmaffionetypedef enum compiler_param 79261909Sluigi{ 80341477Svmaffione#define DEFPARAM(enumerator, option, msgid, default, min, max) \ 81341477Svmaffione enumerator, 82261909Sluigi#include "params.def" 83341477Svmaffione#undef DEFPARAM 84341477Svmaffione LAST_PARAM 85341477Svmaffione} compiler_param; 86261909Sluigi 87261909Sluigi/* The value of the parameter given by ENUM. */ 88285349Sluigi#define PARAM_VALUE(ENUM) \ 89285349Sluigi (compiler_params[(int) ENUM].value) 90261909Sluigi 91341477Svmaffione/* Macros for the various parameters. */ 92285349Sluigi#define SALIAS_MAX_IMPLICIT_FIELDS \ 93261909Sluigi PARAM_VALUE (PARAM_SALIAS_MAX_IMPLICIT_FIELDS) 94285349Sluigi#define SALIAS_MAX_ARRAY_ELEMENTS \ 95285349Sluigi PARAM_VALUE (PARAM_SALIAS_MAX_ARRAY_ELEMENTS) 96261909Sluigi#define SRA_MAX_STRUCTURE_SIZE \ 97341477Svmaffione PARAM_VALUE (PARAM_SRA_MAX_STRUCTURE_SIZE) 98285349Sluigi#define SRA_MAX_STRUCTURE_COUNT \ 99285349Sluigi PARAM_VALUE (PARAM_SRA_MAX_STRUCTURE_COUNT) 100261909Sluigi#define SRA_FIELD_STRUCTURE_RATIO \ 101341477Svmaffione PARAM_VALUE (PARAM_SRA_FIELD_STRUCTURE_RATIO) 102341477Svmaffione#define MAX_INLINE_INSNS_SINGLE \ 103341477Svmaffione PARAM_VALUE (PARAM_MAX_INLINE_INSNS_SINGLE) 104285349Sluigi#define MAX_INLINE_INSNS \ 105261909Sluigi PARAM_VALUE (PARAM_MAX_INLINE_INSNS) 106261909Sluigi#define MAX_INLINE_SLOPE \ 107285349Sluigi PARAM_VALUE (PARAM_MAX_INLINE_SLOPE) 108261909Sluigi#define MIN_INLINE_INSNS \ 109261909Sluigi PARAM_VALUE (PARAM_MIN_INLINE_INSNS) 110261909Sluigi#define MAX_INLINE_INSNS_AUTO \ 111261909Sluigi PARAM_VALUE (PARAM_MAX_INLINE_INSNS_AUTO) 112261909Sluigi#define MAX_VARIABLE_EXPANSIONS \ 113261909Sluigi PARAM_VALUE (PARAM_MAX_VARIABLE_EXPANSIONS) 114261909Sluigi#define MAX_DELAY_SLOT_INSN_SEARCH \ 115261909Sluigi PARAM_VALUE (PARAM_MAX_DELAY_SLOT_INSN_SEARCH) 116261909Sluigi#define MAX_DELAY_SLOT_LIVE_SEARCH \ 117261909Sluigi PARAM_VALUE (PARAM_MAX_DELAY_SLOT_LIVE_SEARCH) 118285349Sluigi#define MAX_PENDING_LIST_LENGTH \ 119344047Svmaffione PARAM_VALUE (PARAM_MAX_PENDING_LIST_LENGTH) 120344047Svmaffione#define MAX_GCSE_MEMORY \ 121285349Sluigi ((size_t) PARAM_VALUE (PARAM_MAX_GCSE_MEMORY)) 122341477Svmaffione#define MAX_GCSE_PASSES \ 123261909Sluigi PARAM_VALUE (PARAM_MAX_GCSE_PASSES) 124261909Sluigi#define GCSE_AFTER_RELOAD_PARTIAL_FRACTION \ 125261909Sluigi PARAM_VALUE (PARAM_GCSE_AFTER_RELOAD_PARTIAL_FRACTION) 126261909Sluigi#define GCSE_AFTER_RELOAD_CRITICAL_FRACTION \ 127261909Sluigi PARAM_VALUE (PARAM_GCSE_AFTER_RELOAD_CRITICAL_FRACTION) 128261909Sluigi#define MAX_UNROLLED_INSNS \ 129261909Sluigi PARAM_VALUE (PARAM_MAX_UNROLLED_INSNS) 130261909Sluigi#define MAX_SMS_LOOP_NUMBER \ 131341477Svmaffione PARAM_VALUE (PARAM_MAX_SMS_LOOP_NUMBER) 132261909Sluigi#define SMS_MAX_II_FACTOR \ 133261909Sluigi PARAM_VALUE (PARAM_SMS_MAX_II_FACTOR) 134261909Sluigi#define SMS_DFA_HISTORY \ 135261909Sluigi PARAM_VALUE (PARAM_SMS_DFA_HISTORY) 136261909Sluigi#define SMS_LOOP_AVERAGE_COUNT_THRESHOLD \ 137341477Svmaffione PARAM_VALUE (PARAM_SMS_LOOP_AVERAGE_COUNT_THRESHOLD) 138261909Sluigi#define GLOBAL_VAR_THRESHOLD \ 139341477Svmaffione PARAM_VALUE (PARAM_GLOBAL_VAR_THRESHOLD) 140341477Svmaffione#define MAX_ALIASED_VOPS \ 141341477Svmaffione PARAM_VALUE (PARAM_MAX_ALIASED_VOPS) 142341477Svmaffione#define INTEGER_SHARE_LIMIT \ 143341477Svmaffione PARAM_VALUE (PARAM_INTEGER_SHARE_LIMIT) 144261909Sluigi#define MAX_LAST_VALUE_RTL \ 145261909Sluigi PARAM_VALUE (PARAM_MAX_LAST_VALUE_RTL) 146261909Sluigi#define MIN_VIRTUAL_MAPPINGS \ 147261909Sluigi PARAM_VALUE (PARAM_MIN_VIRTUAL_MAPPINGS) 148261909Sluigi#define VIRTUAL_MAPPINGS_TO_SYMS_RATIO \ 149261909Sluigi PARAM_VALUE (PARAM_VIRTUAL_MAPPINGS_TO_SYMS_RATIO) 150261909Sluigi#define MAX_FIELDS_FOR_FIELD_SENSITIVE \ 151261909Sluigi ((size_t) PARAM_VALUE (PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE)) 152261909Sluigi#define MAX_SCHED_READY_INSNS \ 153261909Sluigi PARAM_VALUE (PARAM_MAX_SCHED_READY_INSNS) 154261909Sluigi#endif /* ! GCC_PARAMS_H */ 155285349Sluigi