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comparison gcc/params.h @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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1 /* params.h - Run-time parameters.
2 Copyright (C) 2001, 2003, 2004, 2005, 2007, 2008, 2009
3 Free Software Foundation, Inc.
4 Written by Mark Mitchell <mark@codesourcery.com>.
5
6 This file is part of GCC.
7
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
11 version.
12
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
21
22 /* This module provides a means for setting integral parameters
23 dynamically. Instead of encoding magic numbers in various places,
24 use this module to organize all the magic numbers in a single
25 place. The values of the parameters can be set on the
26 command-line, thereby providing a way to control the amount of
27 effort spent on particular optimization passes, or otherwise tune
28 the behavior of the compiler.
29
30 Since their values can be set on the command-line, these parameters
31 should not be used for non-dynamic memory allocation. */
32
33 #ifndef GCC_PARAMS_H
34 #define GCC_PARAMS_H
35
36 /* No parameter shall have this value. */
37
38 #define INVALID_PARAM_VAL (-1)
39
40 /* The information associated with each parameter. */
41
42 typedef struct param_info
43 {
44 /* The name used with the `--param <name>=<value>' switch to set this
45 value. */
46 const char *const option;
47 /* The associated value. */
48 int value;
49
50 /* True if the parameter was explicitly set. */
51 bool set;
52
53 /* Minimum acceptable value. */
54 int min_value;
55
56 /* Maximum acceptable value, if greater than minimum */
57 int max_value;
58
59 /* A short description of the option. */
60 const char *const help;
61 } param_info;
62
63 /* An array containing the compiler parameters and their current
64 values. */
65
66 extern param_info *compiler_params;
67
68 /* Add the N PARAMS to the current list of compiler parameters. */
69
70 extern void add_params (const param_info params[], size_t n);
71
72 /* Set the VALUE associated with the parameter given by NAME. */
73
74 extern void set_param_value (const char *name, int value);
75
76
77 /* The parameters in use by language-independent code. */
78
79 typedef enum compiler_param
80 {
81 #define DEFPARAM(enumerator, option, msgid, default, min, max) \
82 enumerator,
83 #include "params.def"
84 #undef DEFPARAM
85 LAST_PARAM
86 } compiler_param;
87
88 /* The value of the parameter given by ENUM. */
89 #define PARAM_VALUE(ENUM) \
90 (compiler_params[(int) ENUM].value)
91
92 /* True if the value of the parameter was explicitly changed. */
93 #define PARAM_SET_P(ENUM) \
94 (compiler_params[(int) ENUM].set)
95
96 /* Macros for the various parameters. */
97 #define SRA_MAX_STRUCTURE_SIZE \
98 PARAM_VALUE (PARAM_SRA_MAX_STRUCTURE_SIZE)
99 #define SRA_MAX_STRUCTURE_COUNT \
100 PARAM_VALUE (PARAM_SRA_MAX_STRUCTURE_COUNT)
101 #define SRA_FIELD_STRUCTURE_RATIO \
102 PARAM_VALUE (PARAM_SRA_FIELD_STRUCTURE_RATIO)
103 #define STRUCT_REORG_COLD_STRUCT_RATIO \
104 PARAM_VALUE (PARAM_STRUCT_REORG_COLD_STRUCT_RATIO)
105 #define MAX_INLINE_INSNS_SINGLE \
106 PARAM_VALUE (PARAM_MAX_INLINE_INSNS_SINGLE)
107 #define MAX_INLINE_INSNS \
108 PARAM_VALUE (PARAM_MAX_INLINE_INSNS)
109 #define MAX_INLINE_SLOPE \
110 PARAM_VALUE (PARAM_MAX_INLINE_SLOPE)
111 #define MIN_INLINE_INSNS \
112 PARAM_VALUE (PARAM_MIN_INLINE_INSNS)
113 #define MAX_INLINE_INSNS_AUTO \
114 PARAM_VALUE (PARAM_MAX_INLINE_INSNS_AUTO)
115 #define MAX_VARIABLE_EXPANSIONS \
116 PARAM_VALUE (PARAM_MAX_VARIABLE_EXPANSIONS)
117 #define MIN_VECT_LOOP_BOUND \
118 PARAM_VALUE (PARAM_MIN_VECT_LOOP_BOUND)
119 #define MAX_DELAY_SLOT_INSN_SEARCH \
120 PARAM_VALUE (PARAM_MAX_DELAY_SLOT_INSN_SEARCH)
121 #define MAX_DELAY_SLOT_LIVE_SEARCH \
122 PARAM_VALUE (PARAM_MAX_DELAY_SLOT_LIVE_SEARCH)
123 #define MAX_PENDING_LIST_LENGTH \
124 PARAM_VALUE (PARAM_MAX_PENDING_LIST_LENGTH)
125 #define MAX_GCSE_MEMORY \
126 ((size_t) PARAM_VALUE (PARAM_MAX_GCSE_MEMORY))
127 #define MAX_GCSE_PASSES \
128 PARAM_VALUE (PARAM_MAX_GCSE_PASSES)
129 #define GCSE_AFTER_RELOAD_PARTIAL_FRACTION \
130 PARAM_VALUE (PARAM_GCSE_AFTER_RELOAD_PARTIAL_FRACTION)
131 #define GCSE_AFTER_RELOAD_CRITICAL_FRACTION \
132 PARAM_VALUE (PARAM_GCSE_AFTER_RELOAD_CRITICAL_FRACTION)
133 #define MAX_UNROLLED_INSNS \
134 PARAM_VALUE (PARAM_MAX_UNROLLED_INSNS)
135 #define MAX_SMS_LOOP_NUMBER \
136 PARAM_VALUE (PARAM_MAX_SMS_LOOP_NUMBER)
137 #define SMS_MAX_II_FACTOR \
138 PARAM_VALUE (PARAM_SMS_MAX_II_FACTOR)
139 #define SMS_DFA_HISTORY \
140 PARAM_VALUE (PARAM_SMS_DFA_HISTORY)
141 #define SMS_LOOP_AVERAGE_COUNT_THRESHOLD \
142 PARAM_VALUE (PARAM_SMS_LOOP_AVERAGE_COUNT_THRESHOLD)
143 #define MAX_ALIASED_VOPS \
144 PARAM_VALUE (PARAM_MAX_ALIASED_VOPS)
145 #define AVG_ALIASED_VOPS \
146 PARAM_VALUE (PARAM_AVG_ALIASED_VOPS)
147 #define INTEGER_SHARE_LIMIT \
148 PARAM_VALUE (PARAM_INTEGER_SHARE_LIMIT)
149 #define MAX_LAST_VALUE_RTL \
150 PARAM_VALUE (PARAM_MAX_LAST_VALUE_RTL)
151 #define MIN_VIRTUAL_MAPPINGS \
152 PARAM_VALUE (PARAM_MIN_VIRTUAL_MAPPINGS)
153 #define VIRTUAL_MAPPINGS_TO_SYMS_RATIO \
154 PARAM_VALUE (PARAM_VIRTUAL_MAPPINGS_TO_SYMS_RATIO)
155 #define MAX_FIELDS_FOR_FIELD_SENSITIVE \
156 ((size_t) PARAM_VALUE (PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE))
157 #define MAX_SCHED_READY_INSNS \
158 PARAM_VALUE (PARAM_MAX_SCHED_READY_INSNS)
159 #define PREFETCH_LATENCY \
160 PARAM_VALUE (PARAM_PREFETCH_LATENCY)
161 #define SIMULTANEOUS_PREFETCHES \
162 PARAM_VALUE (PARAM_SIMULTANEOUS_PREFETCHES)
163 #define L1_CACHE_SIZE \
164 PARAM_VALUE (PARAM_L1_CACHE_SIZE)
165 #define L1_CACHE_LINE_SIZE \
166 PARAM_VALUE (PARAM_L1_CACHE_LINE_SIZE)
167 #define L2_CACHE_SIZE \
168 PARAM_VALUE (PARAM_L2_CACHE_SIZE)
169 #define USE_CANONICAL_TYPES \
170 PARAM_VALUE (PARAM_USE_CANONICAL_TYPES)
171 #define IRA_MAX_LOOPS_NUM \
172 PARAM_VALUE (PARAM_IRA_MAX_LOOPS_NUM)
173 #define IRA_MAX_CONFLICT_TABLE_SIZE \
174 PARAM_VALUE (PARAM_IRA_MAX_CONFLICT_TABLE_SIZE)
175 #define SWITCH_CONVERSION_BRANCH_RATIO \
176 PARAM_VALUE (PARAM_SWITCH_CONVERSION_BRANCH_RATIO)
177 #define LOOP_INVARIANT_MAX_BBS_IN_LOOP \
178 PARAM_VALUE (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP)
179 #endif /* ! GCC_PARAMS_H */