1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/* params.h - Run-time parameters.
Copyright (C) 2001-2013 Free Software Foundation, Inc.
Written by Mark Mitchell <mark@codesourcery.com>.
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 3, 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 COPYING3. If not see
<http://www.gnu.org/licenses/>. */
/* 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 <name>=<value>' switch to set this
value. */
const char *const option;
/* The default value. */
int default_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;
/* Returns the number of entries in the table, for the use by plugins. */
extern size_t get_num_compiler_params (void);
/* 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 in the
table PARAMS using PARAMS_SET to indicate which have been
explicitly set. */
extern void set_param_value (const char *name, int value,
int *params, int *params_set);
/* 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. Not an lvalue. */
#define PARAM_VALUE(ENUM) \
((int) global_options.x_param_values[(int) ENUM])
/* Set the value of the parameter given by NUM to VALUE, implicitly,
if it has not been set explicitly by the user, in the table PARAMS
using PARAMS_SET to indicate which have been explicitly set. */
extern void maybe_set_param_value (compiler_param num, int value,
int *params, int *params_set);
/* Set the default value of a parameter given by NUM to VALUE, before
option processing. */
extern void set_default_param_value (compiler_param num, int value);
/* Add all parameters and default values that can be set in both the
driver and the compiler proper. */
extern void global_init_params (void);
/* Note that all parameters have been added and all default values
set. */
extern void finish_params (void);
/* Return the default value of parameter NUM. */
extern int default_param_value (compiler_param num);
/* Initialize an array PARAMS with default values of the
parameters. */
extern void init_param_values (int *params);
/* Macros for the various parameters. */
#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 MIN_VECT_LOOP_BOUND \
PARAM_VALUE (PARAM_MIN_VECT_LOOP_BOUND)
#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_INSERTION_RATIO \
((size_t) PARAM_VALUE (PARAM_MAX_GCSE_INSERTION_RATIO))
#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 GCSE_COST_DISTANCE_RATIO \
PARAM_VALUE (PARAM_GCSE_COST_DISTANCE_RATIO)
#define GCSE_UNRESTRICTED_COST \
PARAM_VALUE (PARAM_GCSE_UNRESTRICTED_COST)
#define MAX_HOIST_DEPTH \
PARAM_VALUE (PARAM_MAX_HOIST_DEPTH)
#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 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)
#define PREFETCH_LATENCY \
PARAM_VALUE (PARAM_PREFETCH_LATENCY)
#define SIMULTANEOUS_PREFETCHES \
PARAM_VALUE (PARAM_SIMULTANEOUS_PREFETCHES)
#define L1_CACHE_SIZE \
PARAM_VALUE (PARAM_L1_CACHE_SIZE)
#define L1_CACHE_LINE_SIZE \
PARAM_VALUE (PARAM_L1_CACHE_LINE_SIZE)
#define L2_CACHE_SIZE \
PARAM_VALUE (PARAM_L2_CACHE_SIZE)
#define USE_CANONICAL_TYPES \
PARAM_VALUE (PARAM_USE_CANONICAL_TYPES)
#define IRA_MAX_LOOPS_NUM \
PARAM_VALUE (PARAM_IRA_MAX_LOOPS_NUM)
#define IRA_MAX_CONFLICT_TABLE_SIZE \
PARAM_VALUE (PARAM_IRA_MAX_CONFLICT_TABLE_SIZE)
#define IRA_LOOP_RESERVED_REGS \
PARAM_VALUE (PARAM_IRA_LOOP_RESERVED_REGS)
#define SWITCH_CONVERSION_BRANCH_RATIO \
PARAM_VALUE (PARAM_SWITCH_CONVERSION_BRANCH_RATIO)
#define LOOP_INVARIANT_MAX_BBS_IN_LOOP \
PARAM_VALUE (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP)
#define SLP_MAX_INSNS_IN_BB \
PARAM_VALUE (PARAM_SLP_MAX_INSNS_IN_BB)
#define MIN_INSN_TO_PREFETCH_RATIO \
PARAM_VALUE (PARAM_MIN_INSN_TO_PREFETCH_RATIO)
#define PREFETCH_MIN_INSN_TO_MEM_RATIO \
PARAM_VALUE (PARAM_PREFETCH_MIN_INSN_TO_MEM_RATIO)
#define MIN_NONDEBUG_INSN_UID \
PARAM_VALUE (PARAM_MIN_NONDEBUG_INSN_UID)
#define MAX_STORES_TO_SINK \
PARAM_VALUE (PARAM_MAX_STORES_TO_SINK)
#define ALLOW_LOAD_DATA_RACES \
PARAM_VALUE (PARAM_ALLOW_LOAD_DATA_RACES)
#define ALLOW_STORE_DATA_RACES \
PARAM_VALUE (PARAM_ALLOW_STORE_DATA_RACES)
#define ALLOW_PACKED_LOAD_DATA_RACES \
PARAM_VALUE (PARAM_ALLOW_PACKED_LOAD_DATA_RACES)
#define ALLOW_PACKED_STORE_DATA_RACES \
PARAM_VALUE (PARAM_ALLOW_PACKED_STORE_DATA_RACES)
#endif /* ! GCC_PARAMS_H */
|
