/* params.h - Run-time parameters. Copyright (C) 2001, 2003, 2004, 2005 Free Software Foundation, Inc. Written by Mark Mitchell . 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* This module provides a means for setting integral parameters dynamically. Instead of encoding magic numbers in various places, use this module to organize all the magic numbers in a single place. The values of the parameters can be set on the command-line, thereby providing a way to control the amount of effort spent on particular optimization passes, or otherwise tune the behavior of the compiler. Since their values can be set on the command-line, these parameters should not be used for non-dynamic memory allocation. */ #ifndef GCC_PARAMS_H #define GCC_PARAMS_H /* No parameter shall have this value. */ #define INVALID_PARAM_VAL (-1) /* The information associated with each parameter. */ typedef struct param_info { /* The name used with the `--param =' switch to set this value. */ const char *const option; /* The associated value. */ int value; /* Minimum acceptable value. */ int min_value; /* Maximum acceptable value, if greater than minimum */ int max_value; /* A short description of the option. */ const char *const help; } param_info; /* An array containing the compiler parameters and their current values. */ extern param_info *compiler_params; /* Add the N PARAMS to the current list of compiler parameters. */ extern void add_params (const param_info params[], size_t n); /* Set the VALUE associated with the parameter given by NAME. */ extern void set_param_value (const char *name, int value); /* The parameters in use by language-independent code. */ typedef enum compiler_param { #define DEFPARAM(enumerator, option, msgid, default, min, max) \ enumerator, #include "params.def" #undef DEFPARAM LAST_PARAM } compiler_param; /* The value of the parameter given by ENUM. */ #define PARAM_VALUE(ENUM) \ (compiler_params[(int) ENUM].value) /* Macros for the various parameters. */ #define SALIAS_MAX_IMPLICIT_FIELDS \ PARAM_VALUE (PARAM_SALIAS_MAX_IMPLICIT_FIELDS) #define SALIAS_MAX_ARRAY_ELEMENTS \ PARAM_VALUE (PARAM_SALIAS_MAX_ARRAY_ELEMENTS) #define SRA_MAX_STRUCTURE_SIZE \ PARAM_VALUE (PARAM_SRA_MAX_STRUCTURE_SIZE) #define SRA_MAX_STRUCTURE_COUNT \ PARAM_VALUE (PARAM_SRA_MAX_STRUCTURE_COUNT) #define SRA_FIELD_STRUCTURE_RATIO \ PARAM_VALUE (PARAM_SRA_FIELD_STRUCTURE_RATIO) #define MAX_INLINE_INSNS_SINGLE \ PARAM_VALUE (PARAM_MAX_INLINE_INSNS_SINGLE) #define MAX_INLINE_INSNS \ PARAM_VALUE (PARAM_MAX_INLINE_INSNS) #define MAX_INLINE_SLOPE \ PARAM_VALUE (PARAM_MAX_INLINE_SLOPE) #define MIN_INLINE_INSNS \ PARAM_VALUE (PARAM_MIN_INLINE_INSNS) #define MAX_INLINE_INSNS_AUTO \ PARAM_VALUE (PARAM_MAX_INLINE_INSNS_AUTO) #define MAX_VARIABLE_EXPANSIONS \ PARAM_VALUE (PARAM_MAX_VARIABLE_EXPANSIONS) #define MAX_DELAY_SLOT_INSN_SEARCH \ PARAM_VALUE (PARAM_MAX_DELAY_SLOT_INSN_SEARCH) #define MAX_DELAY_SLOT_LIVE_SEARCH \ PARAM_VALUE (PARAM_MAX_DELAY_SLOT_LIVE_SEARCH) #define MAX_PENDING_LIST_LENGTH \ PARAM_VALUE (PARAM_MAX_PENDING_LIST_LENGTH) #define MAX_GCSE_MEMORY \ ((size_t) PARAM_VALUE (PARAM_MAX_GCSE_MEMORY)) #define MAX_GCSE_PASSES \ PARAM_VALUE (PARAM_MAX_GCSE_PASSES) #define GCSE_AFTER_RELOAD_PARTIAL_FRACTION \ PARAM_VALUE (PARAM_GCSE_AFTER_RELOAD_PARTIAL_FRACTION) #define GCSE_AFTER_RELOAD_CRITICAL_FRACTION \ PARAM_VALUE (PARAM_GCSE_AFTER_RELOAD_CRITICAL_FRACTION) #define MAX_UNROLLED_INSNS \ PARAM_VALUE (PARAM_MAX_UNROLLED_INSNS) #define MAX_SMS_LOOP_NUMBER \ PARAM_VALUE (PARAM_MAX_SMS_LOOP_NUMBER) #define SMS_MAX_II_FACTOR \ PARAM_VALUE (PARAM_SMS_MAX_II_FACTOR) #define SMS_DFA_HISTORY \ PARAM_VALUE (PARAM_SMS_DFA_HISTORY) #define SMS_LOOP_AVERAGE_COUNT_THRESHOLD \ PARAM_VALUE (PARAM_SMS_LOOP_AVERAGE_COUNT_THRESHOLD) #define GLOBAL_VAR_THRESHOLD \ PARAM_VALUE (PARAM_GLOBAL_VAR_THRESHOLD) #define MAX_ALIASED_VOPS \ PARAM_VALUE (PARAM_MAX_ALIASED_VOPS) #define INTEGER_SHARE_LIMIT \ PARAM_VALUE (PARAM_INTEGER_SHARE_LIMIT) #define MAX_LAST_VALUE_RTL \ PARAM_VALUE (PARAM_MAX_LAST_VALUE_RTL) #define MIN_VIRTUAL_MAPPINGS \ PARAM_VALUE (PARAM_MIN_VIRTUAL_MAPPINGS) #define VIRTUAL_MAPPINGS_TO_SYMS_RATIO \ PARAM_VALUE (PARAM_VIRTUAL_MAPPINGS_TO_SYMS_RATIO) #define MAX_FIELDS_FOR_FIELD_SENSITIVE \ ((size_t) PARAM_VALUE (PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE)) #define MAX_SCHED_READY_INSNS \ PARAM_VALUE (PARAM_MAX_SCHED_READY_INSNS) #endif /* ! GCC_PARAMS_H */