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