Mercurial > hg > CbC > CbC_gcc
annotate gcc/params.c @ 128:fe568345ddd5
fix CbC-example
author | mir3636 |
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date | Wed, 11 Apr 2018 19:32:28 +0900 |
parents | 04ced10e8804 |
children | 84e7813d76e9 |
rev | line source |
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0 | 1 /* params.c - Run-time parameters. |
111 | 2 Copyright (C) 2001-2017 Free Software Foundation, Inc. |
0 | 3 Written by Mark Mitchell <mark@codesourcery.com>. |
4 | |
5 This file is part of GCC. | |
6 | |
7 GCC is free software; you can redistribute it and/or modify it under | |
8 the terms of the GNU General Public License as published by the Free | |
9 Software Foundation; either version 3, or (at your option) any later | |
10 version. | |
11 | |
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
18 along with GCC; see the file COPYING3. If not see | |
19 <http://www.gnu.org/licenses/>. */ | |
20 | |
21 #include "config.h" | |
22 #include "system.h" | |
23 #include "coretypes.h" | |
111 | 24 #include "common/common-target.h" |
0 | 25 #include "params.h" |
111 | 26 #include "params-enum.h" |
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27 #include "diagnostic-core.h" |
111 | 28 #include "spellcheck.h" |
0 | 29 |
30 /* An array containing the compiler parameters and their current | |
31 values. */ | |
32 | |
33 param_info *compiler_params; | |
34 | |
35 /* The number of entries in the table. */ | |
36 static size_t num_compiler_params; | |
37 | |
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38 /* Whether the parameters have all been initialized and had their |
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39 default values determined. */ |
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40 static bool params_finished; |
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41 |
111 | 42 #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) |
43 #define DEFPARAMENUM5(ENUM, OPTION, HELP, DEFAULT, V0, V1, V2, V3, V4) \ | |
44 static const char *values_ ## ENUM [] = { #V0, #V1, #V2, #V3, #V4, NULL }; | |
45 #include "params.def" | |
46 #undef DEFPARAMENUM5 | |
47 #undef DEFPARAM | |
48 | |
49 static const param_info lang_independent_params[] = { | |
50 #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \ | |
51 { OPTION, DEFAULT, MIN, MAX, HELP, NULL }, | |
52 #define DEFPARAMENUM5(ENUM, OPTION, HELP, DEFAULT, \ | |
53 V0, V1, V2, V3, V4) \ | |
54 { OPTION, (int)ENUM ## _KIND_ ## DEFAULT, 0, 4, HELP, values_ ## ENUM }, | |
55 #include "params.def" | |
56 #undef DEFPARAM | |
57 #undef DEFPARAMENUM5 | |
58 { NULL, 0, 0, 0, NULL, NULL } | |
59 }; | |
60 | |
0 | 61 /* Add the N PARAMS to the current list of compiler parameters. */ |
62 | |
63 void | |
64 add_params (const param_info params[], size_t n) | |
65 { | |
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66 gcc_assert (!params_finished); |
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67 |
0 | 68 /* Allocate enough space for the new parameters. */ |
69 compiler_params = XRESIZEVEC (param_info, compiler_params, | |
70 num_compiler_params + n); | |
71 /* Copy them into the table. */ | |
72 memcpy (compiler_params + num_compiler_params, | |
73 params, | |
74 n * sizeof (param_info)); | |
75 /* Keep track of how many parameters we have. */ | |
76 num_compiler_params += n; | |
77 } | |
78 | |
111 | 79 /* Add all parameters and default values that can be set in both the |
80 driver and the compiler proper. */ | |
81 | |
82 void | |
83 global_init_params (void) | |
84 { | |
85 gcc_assert (!params_finished); | |
86 | |
87 add_params (lang_independent_params, LAST_PARAM); | |
88 targetm_common.option_default_params (); | |
89 } | |
90 | |
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91 /* Note that all parameters have been added and all default values |
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92 set. */ |
0 | 93 |
94 void | |
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95 finish_params (void) |
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96 { |
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97 params_finished = true; |
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98 } |
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99 |
111 | 100 /* Reset all state within params.c so that we can rerun the compiler |
101 within the same process. For use by toplev::finalize. */ | |
102 | |
103 void | |
104 params_c_finalize (void) | |
105 { | |
106 XDELETEVEC (compiler_params); | |
107 compiler_params = NULL; | |
108 num_compiler_params = 0; | |
109 params_finished = false; | |
110 } | |
111 | |
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112 /* Set the value of the parameter given by NUM to VALUE in PARAMS and |
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113 PARAMS_SET. If EXPLICIT_P, this is being set by the user; |
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114 otherwise it is being set implicitly by the compiler. */ |
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115 |
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116 static void |
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117 set_param_value_internal (compiler_param num, int value, |
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118 int *params, int *params_set, |
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119 bool explicit_p) |
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120 { |
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121 size_t i = (size_t) num; |
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122 |
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123 gcc_assert (params_finished); |
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124 |
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125 params[i] = value; |
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126 if (explicit_p) |
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127 params_set[i] = true; |
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128 } |
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129 |
111 | 130 /* Return true if it can find the matching entry for NAME in the parameter |
131 table, and assign the entry index to INDEX. Return false otherwise. */ | |
132 | |
133 bool | |
134 find_param (const char *name, enum compiler_param *index) | |
135 { | |
136 for (size_t i = 0; i < num_compiler_params; ++i) | |
137 if (strcmp (compiler_params[i].option, name) == 0) | |
138 { | |
139 *index = (enum compiler_param) i; | |
140 return true; | |
141 } | |
142 | |
143 return false; | |
144 } | |
145 | |
146 /* Look for the closest match for NAME in the parameter table, returning it | |
147 if it is a reasonable suggestion for a misspelling. Return NULL | |
148 otherwise. */ | |
149 | |
150 const char * | |
151 find_param_fuzzy (const char *name) | |
152 { | |
153 best_match <const char *, const char *> bm (name); | |
154 for (size_t i = 0; i < num_compiler_params; ++i) | |
155 bm.consider (compiler_params[i].option); | |
156 return bm.get_best_meaningful_candidate (); | |
157 } | |
158 | |
159 /* Return true if param with entry index INDEX should be defined using strings. | |
160 If so, return the value corresponding to VALUE_NAME in *VALUE_P. */ | |
161 | |
162 bool | |
163 param_string_value_p (enum compiler_param index, const char *value_name, | |
164 int *value_p) | |
165 { | |
166 param_info *entry = &compiler_params[(int) index]; | |
167 if (entry->value_names == NULL) | |
168 return false; | |
169 | |
170 *value_p = -1; | |
171 | |
172 for (int i = 0; entry->value_names[i] != NULL; ++i) | |
173 if (strcmp (entry->value_names[i], value_name) == 0) | |
174 { | |
175 *value_p = i; | |
176 return true; | |
177 } | |
178 | |
179 return true; | |
180 } | |
181 | |
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182 /* Set the VALUE associated with the parameter given by NAME in PARAMS |
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183 and PARAMS_SET. */ |
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184 |
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185 void |
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186 set_param_value (const char *name, int value, |
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187 int *params, int *params_set) |
0 | 188 { |
189 size_t i; | |
190 | |
191 /* Make sure nobody tries to set a parameter to an invalid value. */ | |
192 gcc_assert (value != INVALID_PARAM_VAL); | |
193 | |
111 | 194 enum compiler_param index; |
195 if (!find_param (name, &index)) | |
196 { | |
197 /* If we didn't find this parameter, issue an error message. */ | |
198 error ("invalid parameter %qs", name); | |
199 return; | |
200 } | |
201 i = (size_t)index; | |
0 | 202 |
111 | 203 if (value < compiler_params[i].min_value) |
204 error ("minimum value of parameter %qs is %u", | |
205 compiler_params[i].option, | |
206 compiler_params[i].min_value); | |
207 else if (compiler_params[i].max_value > compiler_params[i].min_value | |
208 && value > compiler_params[i].max_value) | |
209 error ("maximum value of parameter %qs is %u", | |
210 compiler_params[i].option, | |
211 compiler_params[i].max_value); | |
212 else | |
213 set_param_value_internal ((compiler_param) i, value, | |
214 params, params_set, true); | |
0 | 215 } |
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216 |
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217 /* Set the value of the parameter given by NUM to VALUE in PARAMS and |
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218 PARAMS_SET, implicitly, if it has not been set explicitly by the |
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219 user. */ |
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220 |
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221 void |
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222 maybe_set_param_value (compiler_param num, int value, |
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223 int *params, int *params_set) |
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224 { |
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225 if (!params_set[(int) num]) |
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226 set_param_value_internal (num, value, params, params_set, false); |
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227 } |
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228 |
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229 /* Set the default value of a parameter given by NUM to VALUE, before |
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230 option processing. */ |
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231 |
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232 void |
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233 set_default_param_value (compiler_param num, int value) |
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234 { |
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235 gcc_assert (!params_finished); |
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236 |
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237 compiler_params[(int) num].default_value = value; |
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238 } |
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239 |
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240 /* Return the default value of parameter NUM. */ |
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241 |
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242 int |
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243 default_param_value (compiler_param num) |
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244 { |
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245 return compiler_params[(int) num].default_value; |
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246 } |
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247 |
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248 /* Initialize an array PARAMS with default values of the |
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249 parameters. */ |
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250 |
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251 void |
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252 init_param_values (int *params) |
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253 { |
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254 size_t i; |
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255 |
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256 gcc_assert (params_finished); |
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257 |
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258 for (i = 0; i < num_compiler_params; i++) |
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259 params[i] = compiler_params[i].default_value; |
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260 } |
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261 |
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262 /* Return the current value of num_compiler_params, for the benefit of |
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263 plugins that use parameters as features. */ |
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264 |
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265 size_t |
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266 get_num_compiler_params (void) |
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267 { |
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268 return num_compiler_params; |
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269 } |