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2772ef3e | 1 | /* Command line option handling. |
23a5b65a | 2 | Copyright (C) 2002-2014 Free Software Foundation, Inc. |
2772ef3e NB |
3 | Contributed by Neil Booth. |
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 | |
9dcd6f09 | 9 | Software Foundation; either version 3, or (at your option) any later |
2772ef3e NB |
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 | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
2772ef3e NB |
20 | |
21 | #include "config.h" | |
22 | #include "system.h" | |
cf03fd63 | 23 | #include "intl.h" |
2772ef3e | 24 | #include "coretypes.h" |
7d5a5747 MLI |
25 | #include "opts.h" |
26 | #include "options.h" | |
88a00ef7 | 27 | #include "tm.h" /* For STACK_CHECK_BUILTIN, |
0df226a4 JM |
28 | STACK_CHECK_STATIC_BUILTIN, DEFAULT_GDB_EXTENSIONS, |
29 | DWARF2_DEBUGGING_INFO and DBX_DEBUGGING_INFO. */ | |
d7b42618 | 30 | #include "flags.h" |
903caebf | 31 | #include "params.h" |
de32c0cb | 32 | #include "diagnostic.h" |
4b84d650 | 33 | #include "diagnostic-color.h" |
5f0f4a3b | 34 | #include "opts-diagnostic.h" |
88a00ef7 | 35 | #include "insn-attr-common.h" |
677f3fa8 | 36 | #include "common/common-target.h" |
2772ef3e | 37 | |
65d4f2cd MLI |
38 | static void set_Wstrict_aliasing (struct gcc_options *opts, int onoff); |
39 | ||
a7d0d30f JM |
40 | /* Indexed by enum debug_info_type. */ |
41 | const char *const debug_type_names[] = | |
42 | { | |
43 | "none", "stabs", "coff", "dwarf-2", "xcoff", "vms" | |
44 | }; | |
45 | ||
39ef6592 LC |
46 | /* Parse the -femit-struct-debug-detailed option value |
47 | and set the flag variables. */ | |
48 | ||
49 | #define MATCH( prefix, string ) \ | |
50 | ((strncmp (prefix, string, sizeof prefix - 1) == 0) \ | |
51 | ? ((string += sizeof prefix - 1), 1) : 0) | |
52 | ||
53 | void | |
299404a1 JM |
54 | set_struct_debug_option (struct gcc_options *opts, location_t loc, |
55 | const char *spec) | |
39ef6592 LC |
56 | { |
57 | /* various labels for comparison */ | |
0576d21f JM |
58 | static const char dfn_lbl[] = "dfn:", dir_lbl[] = "dir:", ind_lbl[] = "ind:"; |
59 | static const char ord_lbl[] = "ord:", gen_lbl[] = "gen:"; | |
60 | static const char none_lbl[] = "none", any_lbl[] = "any"; | |
61 | static const char base_lbl[] = "base", sys_lbl[] = "sys"; | |
39ef6592 LC |
62 | |
63 | enum debug_struct_file files = DINFO_STRUCT_FILE_ANY; | |
64 | /* Default is to apply to as much as possible. */ | |
65 | enum debug_info_usage usage = DINFO_USAGE_NUM_ENUMS; | |
66 | int ord = 1, gen = 1; | |
67 | ||
68 | /* What usage? */ | |
69 | if (MATCH (dfn_lbl, spec)) | |
70 | usage = DINFO_USAGE_DFN; | |
71 | else if (MATCH (dir_lbl, spec)) | |
72 | usage = DINFO_USAGE_DIR_USE; | |
73 | else if (MATCH (ind_lbl, spec)) | |
74 | usage = DINFO_USAGE_IND_USE; | |
75 | ||
76 | /* Generics or not? */ | |
77 | if (MATCH (ord_lbl, spec)) | |
78 | gen = 0; | |
79 | else if (MATCH (gen_lbl, spec)) | |
80 | ord = 0; | |
81 | ||
82 | /* What allowable environment? */ | |
83 | if (MATCH (none_lbl, spec)) | |
84 | files = DINFO_STRUCT_FILE_NONE; | |
85 | else if (MATCH (any_lbl, spec)) | |
86 | files = DINFO_STRUCT_FILE_ANY; | |
87 | else if (MATCH (sys_lbl, spec)) | |
88 | files = DINFO_STRUCT_FILE_SYS; | |
89 | else if (MATCH (base_lbl, spec)) | |
90 | files = DINFO_STRUCT_FILE_BASE; | |
91 | else | |
299404a1 JM |
92 | error_at (loc, |
93 | "argument %qs to %<-femit-struct-debug-detailed%> " | |
94 | "not recognized", | |
95 | spec); | |
39ef6592 LC |
96 | |
97 | /* Effect the specification. */ | |
98 | if (usage == DINFO_USAGE_NUM_ENUMS) | |
99 | { | |
100 | if (ord) | |
101 | { | |
69ccdddb JM |
102 | opts->x_debug_struct_ordinary[DINFO_USAGE_DFN] = files; |
103 | opts->x_debug_struct_ordinary[DINFO_USAGE_DIR_USE] = files; | |
104 | opts->x_debug_struct_ordinary[DINFO_USAGE_IND_USE] = files; | |
39ef6592 LC |
105 | } |
106 | if (gen) | |
107 | { | |
69ccdddb JM |
108 | opts->x_debug_struct_generic[DINFO_USAGE_DFN] = files; |
109 | opts->x_debug_struct_generic[DINFO_USAGE_DIR_USE] = files; | |
110 | opts->x_debug_struct_generic[DINFO_USAGE_IND_USE] = files; | |
39ef6592 LC |
111 | } |
112 | } | |
113 | else | |
114 | { | |
115 | if (ord) | |
69ccdddb | 116 | opts->x_debug_struct_ordinary[usage] = files; |
39ef6592 | 117 | if (gen) |
69ccdddb | 118 | opts->x_debug_struct_generic[usage] = files; |
39ef6592 LC |
119 | } |
120 | ||
121 | if (*spec == ',') | |
299404a1 | 122 | set_struct_debug_option (opts, loc, spec+1); |
39ef6592 LC |
123 | else |
124 | { | |
125 | /* No more -femit-struct-debug-detailed specifications. | |
126 | Do final checks. */ | |
127 | if (*spec != '\0') | |
299404a1 JM |
128 | error_at (loc, |
129 | "argument %qs to %<-femit-struct-debug-detailed%> unknown", | |
130 | spec); | |
69ccdddb JM |
131 | if (opts->x_debug_struct_ordinary[DINFO_USAGE_DIR_USE] |
132 | < opts->x_debug_struct_ordinary[DINFO_USAGE_IND_USE] | |
133 | || opts->x_debug_struct_generic[DINFO_USAGE_DIR_USE] | |
134 | < opts->x_debug_struct_generic[DINFO_USAGE_IND_USE]) | |
299404a1 JM |
135 | error_at (loc, |
136 | "%<-femit-struct-debug-detailed=dir:...%> must allow " | |
137 | "at least as much as " | |
138 | "%<-femit-struct-debug-detailed=ind:...%>"); | |
39ef6592 LC |
139 | } |
140 | } | |
141 | ||
c98cd5bf JM |
142 | /* Strip off a legitimate source ending from the input string NAME of |
143 | length LEN. Rather than having to know the names used by all of | |
144 | our front ends, we strip off an ending of a period followed by | |
145 | up to five characters. (Java uses ".class".) */ | |
146 | ||
147 | void | |
148 | strip_off_ending (char *name, int len) | |
149 | { | |
150 | int i; | |
151 | for (i = 2; i < 6 && len > i; i++) | |
152 | { | |
153 | if (name[len - i] == '.') | |
154 | { | |
155 | name[len - i] = '\0'; | |
156 | break; | |
157 | } | |
158 | } | |
159 | } | |
160 | ||
39ef6592 LC |
161 | /* Find the base name of a path, stripping off both directories and |
162 | a single final extension. */ | |
69ccdddb | 163 | int |
39ef6592 LC |
164 | base_of_path (const char *path, const char **base_out) |
165 | { | |
166 | const char *base = path; | |
167 | const char *dot = 0; | |
168 | const char *p = path; | |
169 | char c = *p; | |
170 | while (c) | |
171 | { | |
c3284718 | 172 | if (IS_DIR_SEPARATOR (c)) |
39ef6592 LC |
173 | { |
174 | base = p + 1; | |
175 | dot = 0; | |
176 | } | |
177 | else if (c == '.') | |
178 | dot = p; | |
179 | c = *++p; | |
180 | } | |
181 | if (!dot) | |
182 | dot = p; | |
183 | *base_out = base; | |
184 | return dot - base; | |
185 | } | |
186 | ||
2cc98056 NB |
187 | /* What to print when a switch has no documentation. */ |
188 | static const char undocumented_msg[] = N_("This switch lacks documentation"); | |
189 | ||
8d5a7d1f | 190 | typedef char *char_p; /* For DEF_VEC_P. */ |
8d5a7d1f | 191 | |
48476d13 | 192 | static void handle_param (struct gcc_options *opts, |
299404a1 JM |
193 | struct gcc_options *opts_set, location_t loc, |
194 | const char *carg); | |
df38ffef | 195 | static void set_debug_level (enum debug_info_type type, int extended, |
0576d21f | 196 | const char *arg, struct gcc_options *opts, |
299404a1 JM |
197 | struct gcc_options *opts_set, |
198 | location_t loc); | |
d5478783 | 199 | static void set_fast_math_flags (struct gcc_options *opts, int set); |
299404a1 JM |
200 | static void decode_d_option (const char *arg, struct gcc_options *opts, |
201 | location_t loc, diagnostic_context *dc); | |
d5478783 JM |
202 | static void set_unsafe_math_optimizations_flags (struct gcc_options *opts, |
203 | int set); | |
a4d8c676 JM |
204 | static void enable_warning_as_error (const char *arg, int value, |
205 | unsigned int lang_mask, | |
206 | const struct cl_option_handlers *handlers, | |
c5fa0890 JM |
207 | struct gcc_options *opts, |
208 | struct gcc_options *opts_set, | |
a4d8c676 JM |
209 | location_t loc, |
210 | diagnostic_context *dc); | |
2772ef3e | 211 | |
5f20c657 JM |
212 | /* Handle a back-end option; arguments and return value as for |
213 | handle_option. */ | |
2772ef3e | 214 | |
c98cd5bf | 215 | bool |
46625112 | 216 | target_handle_option (struct gcc_options *opts, |
d4d24ba4 | 217 | struct gcc_options *opts_set, |
46625112 | 218 | const struct cl_decoded_option *decoded, |
481e1176 | 219 | unsigned int lang_mask ATTRIBUTE_UNUSED, int kind, |
96e45421 | 220 | location_t loc, |
d5478783 JM |
221 | const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED, |
222 | diagnostic_context *dc) | |
5f20c657 | 223 | { |
d5478783 | 224 | gcc_assert (dc == global_dc); |
5f20c657 | 225 | gcc_assert (kind == DK_UNSPECIFIED); |
677f3fa8 | 226 | return targetm_common.handle_option (opts, opts_set, decoded, loc); |
2772ef3e | 227 | } |
d7b42618 | 228 | |
1ebc7e68 | 229 | /* Add comma-separated strings to a char_p vector. */ |
8d5a7d1f ILT |
230 | |
231 | static void | |
6a1f6c9c | 232 | add_comma_separated_to_vector (void **pvec, const char *arg) |
8d5a7d1f ILT |
233 | { |
234 | char *tmp; | |
235 | char *r; | |
236 | char *w; | |
237 | char *token_start; | |
9771b263 DN |
238 | vec<char_p> *v = (vec<char_p> *) *pvec; |
239 | ||
240 | vec_check_alloc (v, 1); | |
8d5a7d1f ILT |
241 | |
242 | /* We never free this string. */ | |
243 | tmp = xstrdup (arg); | |
244 | ||
245 | r = tmp; | |
246 | w = tmp; | |
247 | token_start = tmp; | |
248 | ||
249 | while (*r != '\0') | |
250 | { | |
251 | if (*r == ',') | |
252 | { | |
253 | *w++ = '\0'; | |
254 | ++r; | |
9771b263 | 255 | v->safe_push (token_start); |
8d5a7d1f ILT |
256 | token_start = w; |
257 | } | |
258 | if (*r == '\\' && r[1] == ',') | |
259 | { | |
260 | *w++ = ','; | |
261 | r += 2; | |
262 | } | |
263 | else | |
264 | *w++ = *r++; | |
265 | } | |
266 | if (*token_start != '\0') | |
9771b263 | 267 | v->safe_push (token_start); |
8d5a7d1f | 268 | |
9771b263 | 269 | *pvec = v; |
8d5a7d1f ILT |
270 | } |
271 | ||
a75bfaa6 JM |
272 | /* Initialize OPTS and OPTS_SET before using them in parsing options. */ |
273 | ||
274 | void | |
275 | init_options_struct (struct gcc_options *opts, struct gcc_options *opts_set) | |
276 | { | |
48476d13 JM |
277 | size_t num_params = get_num_compiler_params (); |
278 | ||
dc357798 JJ |
279 | gcc_obstack_init (&opts_obstack); |
280 | ||
a75bfaa6 | 281 | *opts = global_options_init; |
bf7b5747 ST |
282 | |
283 | if (opts_set) | |
284 | memset (opts_set, 0, sizeof (*opts_set)); | |
a75bfaa6 | 285 | |
48476d13 | 286 | opts->x_param_values = XNEWVEC (int, num_params); |
bf7b5747 ST |
287 | |
288 | if (opts_set) | |
289 | opts_set->x_param_values = XCNEWVEC (int, num_params); | |
290 | ||
48476d13 JM |
291 | init_param_values (opts->x_param_values); |
292 | ||
a75bfaa6 JM |
293 | /* Initialize whether `char' is signed. */ |
294 | opts->x_flag_signed_char = DEFAULT_SIGNED_CHAR; | |
295 | /* Set this to a special "uninitialized" value. The actual default | |
296 | is set after target options have been processed. */ | |
297 | opts->x_flag_short_enums = 2; | |
298 | ||
677f3fa8 | 299 | /* Initialize target_flags before default_options_optimization |
a75bfaa6 | 300 | so the latter can modify it. */ |
677f3fa8 | 301 | opts->x_target_flags = targetm_common.default_target_flags; |
a75bfaa6 JM |
302 | |
303 | /* Some targets have ABI-specified unwind tables. */ | |
677f3fa8 | 304 | opts->x_flag_unwind_tables = targetm_common.unwind_tables_default; |
7e4aae92 JM |
305 | |
306 | /* Some targets have other target-specific initialization. */ | |
677f3fa8 | 307 | targetm_common.option_init_struct (opts); |
a75bfaa6 JM |
308 | } |
309 | ||
3020190e | 310 | /* If indicated by the optimization level LEVEL (-Os if SIZE is set, |
bf7a7185 RG |
311 | -Ofast if FAST is set, -Og if DEBUG is set), apply the option DEFAULT_OPT |
312 | to OPTS and OPTS_SET, diagnostic context DC, location LOC, with language | |
313 | mask LANG_MASK and option handlers HANDLERS. */ | |
3020190e JM |
314 | |
315 | static void | |
316 | maybe_default_option (struct gcc_options *opts, | |
317 | struct gcc_options *opts_set, | |
318 | const struct default_options *default_opt, | |
bf7a7185 | 319 | int level, bool size, bool fast, bool debug, |
3020190e JM |
320 | unsigned int lang_mask, |
321 | const struct cl_option_handlers *handlers, | |
a4d8c676 | 322 | location_t loc, |
3020190e JM |
323 | diagnostic_context *dc) |
324 | { | |
325 | const struct cl_option *option = &cl_options[default_opt->opt_index]; | |
326 | bool enabled; | |
327 | ||
328 | if (size) | |
329 | gcc_assert (level == 2); | |
330 | if (fast) | |
331 | gcc_assert (level == 3); | |
bf7a7185 RG |
332 | if (debug) |
333 | gcc_assert (level == 1); | |
3020190e JM |
334 | |
335 | switch (default_opt->levels) | |
336 | { | |
337 | case OPT_LEVELS_ALL: | |
338 | enabled = true; | |
339 | break; | |
340 | ||
341 | case OPT_LEVELS_0_ONLY: | |
342 | enabled = (level == 0); | |
343 | break; | |
344 | ||
345 | case OPT_LEVELS_1_PLUS: | |
346 | enabled = (level >= 1); | |
347 | break; | |
348 | ||
349 | case OPT_LEVELS_1_PLUS_SPEED_ONLY: | |
bf7a7185 RG |
350 | enabled = (level >= 1 && !size && !debug); |
351 | break; | |
352 | ||
353 | case OPT_LEVELS_1_PLUS_NOT_DEBUG: | |
354 | enabled = (level >= 1 && !debug); | |
3020190e JM |
355 | break; |
356 | ||
357 | case OPT_LEVELS_2_PLUS: | |
358 | enabled = (level >= 2); | |
359 | break; | |
360 | ||
361 | case OPT_LEVELS_2_PLUS_SPEED_ONLY: | |
bf7a7185 | 362 | enabled = (level >= 2 && !size && !debug); |
3020190e JM |
363 | break; |
364 | ||
365 | case OPT_LEVELS_3_PLUS: | |
366 | enabled = (level >= 3); | |
367 | break; | |
368 | ||
369 | case OPT_LEVELS_3_PLUS_AND_SIZE: | |
370 | enabled = (level >= 3 || size); | |
371 | break; | |
372 | ||
373 | case OPT_LEVELS_SIZE: | |
374 | enabled = size; | |
375 | break; | |
376 | ||
377 | case OPT_LEVELS_FAST: | |
378 | enabled = fast; | |
379 | break; | |
380 | ||
381 | case OPT_LEVELS_NONE: | |
382 | default: | |
383 | gcc_unreachable (); | |
384 | } | |
385 | ||
386 | if (enabled) | |
387 | handle_generated_option (opts, opts_set, default_opt->opt_index, | |
388 | default_opt->arg, default_opt->value, | |
a4d8c676 JM |
389 | lang_mask, DK_UNSPECIFIED, loc, |
390 | handlers, dc); | |
3020190e | 391 | else if (default_opt->arg == NULL |
300d83d9 | 392 | && !option->cl_reject_negative) |
3020190e JM |
393 | handle_generated_option (opts, opts_set, default_opt->opt_index, |
394 | default_opt->arg, !default_opt->value, | |
a4d8c676 JM |
395 | lang_mask, DK_UNSPECIFIED, loc, |
396 | handlers, dc); | |
3020190e JM |
397 | } |
398 | ||
399 | /* As indicated by the optimization level LEVEL (-Os if SIZE is set, | |
400 | -Ofast if FAST is set), apply the options in array DEFAULT_OPTS to | |
a4d8c676 JM |
401 | OPTS and OPTS_SET, diagnostic context DC, location LOC, with |
402 | language mask LANG_MASK and option handlers HANDLERS. */ | |
3020190e JM |
403 | |
404 | static void | |
405 | maybe_default_options (struct gcc_options *opts, | |
406 | struct gcc_options *opts_set, | |
407 | const struct default_options *default_opts, | |
bf7a7185 | 408 | int level, bool size, bool fast, bool debug, |
3020190e JM |
409 | unsigned int lang_mask, |
410 | const struct cl_option_handlers *handlers, | |
a4d8c676 | 411 | location_t loc, |
3020190e JM |
412 | diagnostic_context *dc) |
413 | { | |
414 | size_t i; | |
415 | ||
416 | for (i = 0; default_opts[i].levels != OPT_LEVELS_NONE; i++) | |
417 | maybe_default_option (opts, opts_set, &default_opts[i], | |
bf7a7185 RG |
418 | level, size, fast, debug, |
419 | lang_mask, handlers, loc, dc); | |
3020190e JM |
420 | } |
421 | ||
422 | /* Table of options enabled by default at different levels. */ | |
423 | ||
424 | static const struct default_options default_options_table[] = | |
425 | { | |
426 | /* -O1 optimizations. */ | |
427 | { OPT_LEVELS_1_PLUS, OPT_fdefer_pop, NULL, 1 }, | |
428 | #ifdef DELAY_SLOTS | |
429 | { OPT_LEVELS_1_PLUS, OPT_fdelayed_branch, NULL, 1 }, | |
430 | #endif | |
431 | { OPT_LEVELS_1_PLUS, OPT_fguess_branch_probability, NULL, 1 }, | |
432 | { OPT_LEVELS_1_PLUS, OPT_fcprop_registers, NULL, 1 }, | |
433 | { OPT_LEVELS_1_PLUS, OPT_fforward_propagate, NULL, 1 }, | |
434 | { OPT_LEVELS_1_PLUS, OPT_fif_conversion, NULL, 1 }, | |
435 | { OPT_LEVELS_1_PLUS, OPT_fif_conversion2, NULL, 1 }, | |
436 | { OPT_LEVELS_1_PLUS, OPT_fipa_pure_const, NULL, 1 }, | |
437 | { OPT_LEVELS_1_PLUS, OPT_fipa_reference, NULL, 1 }, | |
438 | { OPT_LEVELS_1_PLUS, OPT_fipa_profile, NULL, 1 }, | |
439 | { OPT_LEVELS_1_PLUS, OPT_fmerge_constants, NULL, 1 }, | |
484db665 | 440 | { OPT_LEVELS_1_PLUS, OPT_fshrink_wrap, NULL, 1 }, |
3020190e JM |
441 | { OPT_LEVELS_1_PLUS, OPT_fsplit_wide_types, NULL, 1 }, |
442 | { OPT_LEVELS_1_PLUS, OPT_ftree_ccp, NULL, 1 }, | |
443 | { OPT_LEVELS_1_PLUS, OPT_ftree_bit_ccp, NULL, 1 }, | |
444 | { OPT_LEVELS_1_PLUS, OPT_ftree_dce, NULL, 1 }, | |
445 | { OPT_LEVELS_1_PLUS, OPT_ftree_dominator_opts, NULL, 1 }, | |
446 | { OPT_LEVELS_1_PLUS, OPT_ftree_dse, NULL, 1 }, | |
447 | { OPT_LEVELS_1_PLUS, OPT_ftree_ter, NULL, 1 }, | |
bf7a7185 | 448 | { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_sra, NULL, 1 }, |
3020190e JM |
449 | { OPT_LEVELS_1_PLUS, OPT_ftree_copyrename, NULL, 1 }, |
450 | { OPT_LEVELS_1_PLUS, OPT_ftree_fre, NULL, 1 }, | |
451 | { OPT_LEVELS_1_PLUS, OPT_ftree_copy_prop, NULL, 1 }, | |
452 | { OPT_LEVELS_1_PLUS, OPT_ftree_sink, NULL, 1 }, | |
453 | { OPT_LEVELS_1_PLUS, OPT_ftree_ch, NULL, 1 }, | |
454 | { OPT_LEVELS_1_PLUS, OPT_fcombine_stack_adjustments, NULL, 1 }, | |
e692f276 | 455 | { OPT_LEVELS_1_PLUS, OPT_fcompare_elim, NULL, 1 }, |
75cfe445 | 456 | { OPT_LEVELS_1_PLUS, OPT_ftree_slsr, NULL, 1 }, |
3020190e JM |
457 | |
458 | /* -O2 optimizations. */ | |
459 | { OPT_LEVELS_2_PLUS, OPT_finline_small_functions, NULL, 1 }, | |
460 | { OPT_LEVELS_2_PLUS, OPT_findirect_inlining, NULL, 1 }, | |
461 | { OPT_LEVELS_2_PLUS, OPT_fpartial_inlining, NULL, 1 }, | |
462 | { OPT_LEVELS_2_PLUS, OPT_fthread_jumps, NULL, 1 }, | |
463 | { OPT_LEVELS_2_PLUS, OPT_fcrossjumping, NULL, 1 }, | |
464 | { OPT_LEVELS_2_PLUS, OPT_foptimize_sibling_calls, NULL, 1 }, | |
465 | { OPT_LEVELS_2_PLUS, OPT_fcse_follow_jumps, NULL, 1 }, | |
466 | { OPT_LEVELS_2_PLUS, OPT_fgcse, NULL, 1 }, | |
467 | { OPT_LEVELS_2_PLUS, OPT_fexpensive_optimizations, NULL, 1 }, | |
468 | { OPT_LEVELS_2_PLUS, OPT_frerun_cse_after_loop, NULL, 1 }, | |
469 | { OPT_LEVELS_2_PLUS, OPT_fcaller_saves, NULL, 1 }, | |
470 | { OPT_LEVELS_2_PLUS, OPT_fpeephole2, NULL, 1 }, | |
471 | #ifdef INSN_SCHEDULING | |
472 | /* Only run the pre-regalloc scheduling pass if optimizing for speed. */ | |
473 | { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_fschedule_insns, NULL, 1 }, | |
474 | { OPT_LEVELS_2_PLUS, OPT_fschedule_insns2, NULL, 1 }, | |
475 | #endif | |
3020190e JM |
476 | { OPT_LEVELS_2_PLUS, OPT_fstrict_aliasing, NULL, 1 }, |
477 | { OPT_LEVELS_2_PLUS, OPT_fstrict_overflow, NULL, 1 }, | |
478 | { OPT_LEVELS_2_PLUS, OPT_freorder_blocks, NULL, 1 }, | |
479 | { OPT_LEVELS_2_PLUS, OPT_freorder_functions, NULL, 1 }, | |
480 | { OPT_LEVELS_2_PLUS, OPT_ftree_vrp, NULL, 1 }, | |
481 | { OPT_LEVELS_2_PLUS, OPT_ftree_builtin_call_dce, NULL, 1 }, | |
482 | { OPT_LEVELS_2_PLUS, OPT_ftree_pre, NULL, 1 }, | |
483 | { OPT_LEVELS_2_PLUS, OPT_ftree_switch_conversion, NULL, 1 }, | |
484 | { OPT_LEVELS_2_PLUS, OPT_fipa_cp, NULL, 1 }, | |
05842ff5 | 485 | { OPT_LEVELS_2_PLUS, OPT_fdevirtualize, NULL, 1 }, |
bbc9396b | 486 | { OPT_LEVELS_2_PLUS, OPT_fdevirtualize_speculatively, NULL, 1 }, |
3020190e JM |
487 | { OPT_LEVELS_2_PLUS, OPT_fipa_sra, NULL, 1 }, |
488 | { OPT_LEVELS_2_PLUS, OPT_falign_loops, NULL, 1 }, | |
489 | { OPT_LEVELS_2_PLUS, OPT_falign_jumps, NULL, 1 }, | |
490 | { OPT_LEVELS_2_PLUS, OPT_falign_labels, NULL, 1 }, | |
491 | { OPT_LEVELS_2_PLUS, OPT_falign_functions, NULL, 1 }, | |
c9e93168 | 492 | { OPT_LEVELS_2_PLUS, OPT_ftree_tail_merge, NULL, 1 }, |
d6d11272 | 493 | { OPT_LEVELS_2_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_CHEAP }, |
d8878031 | 494 | { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_foptimize_strlen, NULL, 1 }, |
372a6eb8 | 495 | { OPT_LEVELS_2_PLUS, OPT_fhoist_adjacent_loads, NULL, 1 }, |
e9f67e62 | 496 | { OPT_LEVELS_2_PLUS, OPT_fipa_sem_equality, NULL, 1 }, |
ae93744d | 497 | { OPT_LEVELS_2_PLUS, OPT_fisolate_erroneous_paths_dereference, NULL, 1 }, |
3020190e JM |
498 | |
499 | /* -O3 optimizations. */ | |
500 | { OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 }, | |
501 | { OPT_LEVELS_3_PLUS, OPT_fpredictive_commoning, NULL, 1 }, | |
502 | /* Inlining of functions reducing size is a good idea with -Os | |
503 | regardless of them being declared inline. */ | |
504 | { OPT_LEVELS_3_PLUS_AND_SIZE, OPT_finline_functions, NULL, 1 }, | |
bf7a7185 | 505 | { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_finline_functions_called_once, NULL, 1 }, |
3020190e JM |
506 | { OPT_LEVELS_3_PLUS, OPT_funswitch_loops, NULL, 1 }, |
507 | { OPT_LEVELS_3_PLUS, OPT_fgcse_after_reload, NULL, 1 }, | |
ea0f3e87 XDL |
508 | { OPT_LEVELS_3_PLUS, OPT_ftree_loop_vectorize, NULL, 1 }, |
509 | { OPT_LEVELS_3_PLUS, OPT_ftree_slp_vectorize, NULL, 1 }, | |
d6d11272 | 510 | { OPT_LEVELS_3_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_DYNAMIC }, |
3020190e | 511 | { OPT_LEVELS_3_PLUS, OPT_fipa_cp_clone, NULL, 1 }, |
fa06ad0d | 512 | { OPT_LEVELS_3_PLUS, OPT_ftree_partial_pre, NULL, 1 }, |
3020190e JM |
513 | |
514 | /* -Ofast adds optimizations to -O3. */ | |
515 | { OPT_LEVELS_FAST, OPT_ffast_math, NULL, 1 }, | |
516 | ||
517 | { OPT_LEVELS_NONE, 0, NULL, 0 } | |
518 | }; | |
519 | ||
a75bfaa6 JM |
520 | /* Default the options in OPTS and OPTS_SET based on the optimization |
521 | settings in DECODED_OPTIONS and DECODED_OPTIONS_COUNT. */ | |
c98cd5bf | 522 | void |
a75bfaa6 JM |
523 | default_options_optimization (struct gcc_options *opts, |
524 | struct gcc_options *opts_set, | |
525 | struct cl_decoded_option *decoded_options, | |
3020190e | 526 | unsigned int decoded_options_count, |
a4d8c676 | 527 | location_t loc, |
3020190e JM |
528 | unsigned int lang_mask, |
529 | const struct cl_option_handlers *handlers, | |
530 | diagnostic_context *dc) | |
a75bfaa6 JM |
531 | { |
532 | unsigned int i; | |
ab442df7 | 533 | int opt2; |
9756310a NB |
534 | |
535 | /* Scan to see what optimization level has been specified. That will | |
536 | determine the default value of many flags. */ | |
a75bfaa6 | 537 | for (i = 1; i < decoded_options_count; i++) |
9756310a | 538 | { |
a75bfaa6 | 539 | struct cl_decoded_option *opt = &decoded_options[i]; |
6e2f1956 | 540 | switch (opt->opt_index) |
9756310a | 541 | { |
6e2f1956 JM |
542 | case OPT_O: |
543 | if (*opt->arg == '\0') | |
be6d3f0e | 544 | { |
3020190e JM |
545 | opts->x_optimize = 1; |
546 | opts->x_optimize_size = 0; | |
0a8134ca | 547 | opts->x_optimize_fast = 0; |
bf7a7185 | 548 | opts->x_optimize_debug = 0; |
9756310a NB |
549 | } |
550 | else | |
551 | { | |
6e2f1956 JM |
552 | const int optimize_val = integral_argument (opt->arg); |
553 | if (optimize_val == -1) | |
33879b9f MP |
554 | error_at (loc, "argument to %<-O%> should be a non-negative " |
555 | "integer, %<g%>, %<s%> or %<fast%>"); | |
6e2f1956 | 556 | else |
9756310a | 557 | { |
3020190e JM |
558 | opts->x_optimize = optimize_val; |
559 | if ((unsigned int) opts->x_optimize > 255) | |
560 | opts->x_optimize = 255; | |
561 | opts->x_optimize_size = 0; | |
0a8134ca | 562 | opts->x_optimize_fast = 0; |
bf7a7185 | 563 | opts->x_optimize_debug = 0; |
9756310a NB |
564 | } |
565 | } | |
6e2f1956 JM |
566 | break; |
567 | ||
568 | case OPT_Os: | |
3020190e | 569 | opts->x_optimize_size = 1; |
6e2f1956 JM |
570 | |
571 | /* Optimizing for size forces optimize to be 2. */ | |
3020190e | 572 | opts->x_optimize = 2; |
0a8134ca | 573 | opts->x_optimize_fast = 0; |
bf7a7185 | 574 | opts->x_optimize_debug = 0; |
6e2f1956 JM |
575 | break; |
576 | ||
577 | case OPT_Ofast: | |
578 | /* -Ofast only adds flags to -O3. */ | |
3020190e JM |
579 | opts->x_optimize_size = 0; |
580 | opts->x_optimize = 3; | |
0a8134ca | 581 | opts->x_optimize_fast = 1; |
bf7a7185 RG |
582 | opts->x_optimize_debug = 0; |
583 | break; | |
584 | ||
585 | case OPT_Og: | |
586 | /* -Og selects optimization level 1. */ | |
587 | opts->x_optimize_size = 0; | |
588 | opts->x_optimize = 1; | |
589 | opts->x_optimize_fast = 0; | |
590 | opts->x_optimize_debug = 1; | |
6e2f1956 JM |
591 | break; |
592 | ||
593 | default: | |
594 | /* Ignore other options in this prescan. */ | |
595 | break; | |
9756310a NB |
596 | } |
597 | } | |
b8698a0f | 598 | |
3020190e JM |
599 | maybe_default_options (opts, opts_set, default_options_table, |
600 | opts->x_optimize, opts->x_optimize_size, | |
bf7a7185 RG |
601 | opts->x_optimize_fast, opts->x_optimize_debug, |
602 | lang_mask, handlers, loc, dc); | |
3020190e JM |
603 | |
604 | /* -O2 param settings. */ | |
605 | opt2 = (opts->x_optimize >= 2); | |
116cb604 | 606 | |
ab442df7 | 607 | /* Track fields in field-sensitive alias analysis. */ |
48476d13 JM |
608 | maybe_set_param_value |
609 | (PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE, | |
610 | opt2 ? 100 : default_param_value (PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE), | |
611 | opts->x_param_values, opts_set->x_param_values); | |
e9e0aa2c | 612 | |
b1fb9f56 | 613 | /* For -O1 only do loop invariant motion for very small loops. */ |
48476d13 JM |
614 | maybe_set_param_value |
615 | (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP, | |
616 | opt2 ? default_param_value (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP) : 1000, | |
617 | opts->x_param_values, opts_set->x_param_values); | |
b1fb9f56 | 618 | |
3020190e JM |
619 | if (opts->x_optimize_size) |
620 | /* We want to crossjump as much as possible. */ | |
621 | maybe_set_param_value (PARAM_MIN_CROSSJUMP_INSNS, 1, | |
622 | opts->x_param_values, opts_set->x_param_values); | |
ab442df7 | 623 | else |
128dc8e2 | 624 | maybe_set_param_value (PARAM_MIN_CROSSJUMP_INSNS, |
48476d13 JM |
625 | default_param_value (PARAM_MIN_CROSSJUMP_INSNS), |
626 | opts->x_param_values, opts_set->x_param_values); | |
f736cb3e | 627 | |
a75bfaa6 | 628 | /* Allow default optimizations to be specified on a per-machine basis. */ |
3020190e | 629 | maybe_default_options (opts, opts_set, |
677f3fa8 | 630 | targetm_common.option_optimization_table, |
3020190e | 631 | opts->x_optimize, opts->x_optimize_size, |
bf7a7185 RG |
632 | opts->x_optimize_fast, opts->x_optimize_debug, |
633 | lang_mask, handlers, loc, dc); | |
a75bfaa6 JM |
634 | } |
635 | ||
299404a1 JM |
636 | /* After all options at LOC have been read into OPTS and OPTS_SET, |
637 | finalize settings of those options and diagnose incompatible | |
a75bfaa6 | 638 | combinations. */ |
c98cd5bf | 639 | void |
299404a1 JM |
640 | finish_options (struct gcc_options *opts, struct gcc_options *opts_set, |
641 | location_t loc) | |
a75bfaa6 | 642 | { |
a75bfaa6 JM |
643 | enum unwind_info_type ui_except; |
644 | ||
d5478783 | 645 | if (opts->x_dump_base_name && ! IS_ABSOLUTE_PATH (opts->x_dump_base_name)) |
e71da632 | 646 | { |
d5478783 JM |
647 | /* First try to make OPTS->X_DUMP_BASE_NAME relative to the |
648 | OPTS->X_DUMP_DIR_NAME directory. Then try to make | |
649 | OPTS->X_DUMP_BASE_NAME relative to the OPTS->X_AUX_BASE_NAME | |
650 | directory, typically the directory to contain the object | |
651 | file. */ | |
652 | if (opts->x_dump_dir_name) | |
dc357798 JJ |
653 | opts->x_dump_base_name = opts_concat (opts->x_dump_dir_name, |
654 | opts->x_dump_base_name, NULL); | |
dd3b31fb L |
655 | else if (opts->x_aux_base_name |
656 | && strcmp (opts->x_aux_base_name, HOST_BIT_BUCKET) != 0) | |
e71da632 | 657 | { |
d7fb0a6d L |
658 | const char *aux_base; |
659 | ||
d5478783 JM |
660 | base_of_path (opts->x_aux_base_name, &aux_base); |
661 | if (opts->x_aux_base_name != aux_base) | |
d7fb0a6d | 662 | { |
d5478783 | 663 | int dir_len = aux_base - opts->x_aux_base_name; |
dc357798 JJ |
664 | char *new_dump_base_name |
665 | = XOBNEWVEC (&opts_obstack, char, | |
666 | strlen (opts->x_dump_base_name) + dir_len + 1); | |
d7fb0a6d | 667 | |
d5478783 JM |
668 | /* Copy directory component from OPTS->X_AUX_BASE_NAME. */ |
669 | memcpy (new_dump_base_name, opts->x_aux_base_name, dir_len); | |
670 | /* Append existing OPTS->X_DUMP_BASE_NAME. */ | |
671 | strcpy (new_dump_base_name + dir_len, opts->x_dump_base_name); | |
672 | opts->x_dump_base_name = new_dump_base_name; | |
d7fb0a6d | 673 | } |
e71da632 MH |
674 | } |
675 | } | |
676 | ||
93a4f5e0 JJ |
677 | /* Handle related options for unit-at-a-time, toplevel-reorder, and |
678 | section-anchors. */ | |
d5478783 | 679 | if (!opts->x_flag_unit_at_a_time) |
57b08d04 | 680 | { |
d5478783 | 681 | if (opts->x_flag_section_anchors && opts_set->x_flag_section_anchors) |
299404a1 JM |
682 | error_at (loc, "section anchors must be disabled when unit-at-a-time " |
683 | "is disabled"); | |
d5478783 JM |
684 | opts->x_flag_section_anchors = 0; |
685 | if (opts->x_flag_toplevel_reorder == 1) | |
299404a1 JM |
686 | error_at (loc, "toplevel reorder must be disabled when unit-at-a-time " |
687 | "is disabled"); | |
d5478783 | 688 | opts->x_flag_toplevel_reorder = 0; |
57b08d04 | 689 | } |
7ea6b6cf | 690 | |
ee777b71 AH |
691 | if (opts->x_flag_tm && opts->x_flag_non_call_exceptions) |
692 | sorry ("transactional memory is not supported with non-call exceptions"); | |
693 | ||
5ffebee7 JJ |
694 | /* Unless the user has asked for section anchors, we disable toplevel |
695 | reordering at -O0 to disable transformations that might be surprising | |
696 | to end users and to get -fno-toplevel-reorder tested. */ | |
299404a1 | 697 | if (!opts->x_optimize |
d5478783 JM |
698 | && opts->x_flag_toplevel_reorder == 2 |
699 | && !(opts->x_flag_section_anchors && opts_set->x_flag_section_anchors)) | |
93a4f5e0 | 700 | { |
d5478783 JM |
701 | opts->x_flag_toplevel_reorder = 0; |
702 | opts->x_flag_section_anchors = 0; | |
93a4f5e0 | 703 | } |
d5478783 | 704 | if (!opts->x_flag_toplevel_reorder) |
57b08d04 | 705 | { |
d5478783 | 706 | if (opts->x_flag_section_anchors && opts_set->x_flag_section_anchors) |
299404a1 JM |
707 | error_at (loc, "section anchors must be disabled when toplevel reorder" |
708 | " is disabled"); | |
d5478783 | 709 | opts->x_flag_section_anchors = 0; |
57b08d04 ST |
710 | } |
711 | ||
299404a1 | 712 | if (!opts->x_flag_opts_finished) |
ab442df7 | 713 | { |
d5478783 JM |
714 | if (opts->x_flag_pie) |
715 | opts->x_flag_pic = opts->x_flag_pie; | |
716 | if (opts->x_flag_pic && !opts->x_flag_pie) | |
717 | opts->x_flag_shlib = 1; | |
b294a75e | 718 | opts->x_flag_opts_finished = true; |
ab442df7 | 719 | } |
9756310a | 720 | |
299404a1 | 721 | if (opts->x_optimize == 0) |
9756310a NB |
722 | { |
723 | /* Inlining does not work if not optimizing, | |
724 | so force it not to be done. */ | |
d5478783 JM |
725 | opts->x_warn_inline = 0; |
726 | opts->x_flag_no_inline = 1; | |
9756310a NB |
727 | } |
728 | ||
750054a2 CT |
729 | /* The optimization to partition hot and cold basic blocks into separate |
730 | sections of the .o and executable files does not work (currently) | |
e395963f | 731 | with exception handling. This is because there is no support for |
d5478783 JM |
732 | generating unwind info. If opts->x_flag_exceptions is turned on |
733 | we need to turn off the partitioning optimization. */ | |
750054a2 | 734 | |
677f3fa8 | 735 | ui_except = targetm_common.except_unwind_info (opts); |
f0a0390e | 736 | |
d5478783 JM |
737 | if (opts->x_flag_exceptions |
738 | && opts->x_flag_reorder_blocks_and_partition | |
bf1431e3 | 739 | && (ui_except == UI_SJLJ || ui_except >= UI_TARGET)) |
750054a2 | 740 | { |
32ad0f03 TJ |
741 | if (opts_set->x_flag_reorder_blocks_and_partition) |
742 | inform (loc, | |
743 | "-freorder-blocks-and-partition does not work " | |
744 | "with exceptions on this architecture"); | |
d5478783 JM |
745 | opts->x_flag_reorder_blocks_and_partition = 0; |
746 | opts->x_flag_reorder_blocks = 1; | |
750054a2 | 747 | } |
c7466dee | 748 | |
e395963f JW |
749 | /* If user requested unwind info, then turn off the partitioning |
750 | optimization. */ | |
751 | ||
d5478783 | 752 | if (opts->x_flag_unwind_tables |
677f3fa8 | 753 | && !targetm_common.unwind_tables_default |
d5478783 | 754 | && opts->x_flag_reorder_blocks_and_partition |
bf1431e3 | 755 | && (ui_except == UI_SJLJ || ui_except >= UI_TARGET)) |
e395963f | 756 | { |
32ad0f03 TJ |
757 | if (opts_set->x_flag_reorder_blocks_and_partition) |
758 | inform (loc, | |
759 | "-freorder-blocks-and-partition does not support " | |
760 | "unwind info on this architecture"); | |
d5478783 JM |
761 | opts->x_flag_reorder_blocks_and_partition = 0; |
762 | opts->x_flag_reorder_blocks = 1; | |
e395963f JW |
763 | } |
764 | ||
765 | /* If the target requested unwind info, then turn off the partitioning | |
766 | optimization with a different message. Likewise, if the target does not | |
767 | support named sections. */ | |
768 | ||
d5478783 | 769 | if (opts->x_flag_reorder_blocks_and_partition |
677f3fa8 | 770 | && (!targetm_common.have_named_sections |
d5478783 | 771 | || (opts->x_flag_unwind_tables |
677f3fa8 | 772 | && targetm_common.unwind_tables_default |
bf1431e3 | 773 | && (ui_except == UI_SJLJ || ui_except >= UI_TARGET)))) |
c7466dee | 774 | { |
32ad0f03 TJ |
775 | if (opts_set->x_flag_reorder_blocks_and_partition) |
776 | inform (loc, | |
777 | "-freorder-blocks-and-partition does not work " | |
778 | "on this architecture"); | |
d5478783 JM |
779 | opts->x_flag_reorder_blocks_and_partition = 0; |
780 | opts->x_flag_reorder_blocks = 1; | |
c7466dee | 781 | } |
ab442df7 | 782 | |
940c4160 IS |
783 | if (opts->x_flag_reorder_blocks_and_partition |
784 | && !opts_set->x_flag_reorder_functions) | |
785 | opts->x_flag_reorder_functions = 1; | |
786 | ||
e855c69d AB |
787 | /* Pipelining of outer loops is only possible when general pipelining |
788 | capabilities are requested. */ | |
d5478783 JM |
789 | if (!opts->x_flag_sel_sched_pipelining) |
790 | opts->x_flag_sel_sched_pipelining_outer_loops = 0; | |
e855c69d | 791 | |
d5478783 | 792 | if (opts->x_flag_conserve_stack) |
6a78eaa3 | 793 | { |
48476d13 JM |
794 | maybe_set_param_value (PARAM_LARGE_STACK_FRAME, 100, |
795 | opts->x_param_values, opts_set->x_param_values); | |
796 | maybe_set_param_value (PARAM_STACK_FRAME_GROWTH, 40, | |
797 | opts->x_param_values, opts_set->x_param_values); | |
6a78eaa3 JH |
798 | } |
799 | ||
014d92e1 | 800 | if (opts->x_flag_lto) |
e3b8749b RG |
801 | { |
802 | #ifdef ENABLE_LTO | |
d5478783 | 803 | opts->x_flag_generate_lto = 1; |
e3b8749b RG |
804 | |
805 | /* When generating IL, do not operate in whole-program mode. | |
806 | Otherwise, symbols will be privatized too early, causing link | |
807 | errors later. */ | |
d5478783 | 808 | opts->x_flag_whole_program = 0; |
e3b8749b | 809 | #else |
299404a1 | 810 | error_at (loc, "LTO support has not been enabled in this configuration"); |
e3b8749b | 811 | #endif |
063d671d JH |
812 | if (!opts->x_flag_fat_lto_objects |
813 | && (!HAVE_LTO_PLUGIN | |
814 | || (opts_set->x_flag_use_linker_plugin | |
815 | && !opts->x_flag_use_linker_plugin))) | |
e9f67e62 JH |
816 | { |
817 | if (opts_set->x_flag_fat_lto_objects) | |
063d671d | 818 | error_at (loc, "-fno-fat-lto-objects are supported only with linker plugin"); |
e9f67e62 JH |
819 | opts->x_flag_fat_lto_objects = 1; |
820 | } | |
821 | } | |
014d92e1 JH |
822 | if ((opts->x_flag_lto_partition_balanced != 0) + (opts->x_flag_lto_partition_1to1 != 0) |
823 | + (opts->x_flag_lto_partition_none != 0) >= 1) | |
852e4bd2 | 824 | { |
014d92e1 JH |
825 | if ((opts->x_flag_lto_partition_balanced != 0) |
826 | + (opts->x_flag_lto_partition_1to1 != 0) | |
827 | + (opts->x_flag_lto_partition_none != 0) > 1) | |
299404a1 | 828 | error_at (loc, "only one -flto-partition value can be specified"); |
852e4bd2 | 829 | } |
e3b8749b | 830 | |
d5478783 | 831 | /* We initialize opts->x_flag_split_stack to -1 so that targets can set a |
7458026b | 832 | default value if they choose based on other options. */ |
d5478783 JM |
833 | if (opts->x_flag_split_stack == -1) |
834 | opts->x_flag_split_stack = 0; | |
835 | else if (opts->x_flag_split_stack) | |
7458026b | 836 | { |
677f3fa8 | 837 | if (!targetm_common.supports_split_stack (true, opts)) |
7458026b | 838 | { |
299404a1 JM |
839 | error_at (loc, "%<-fsplit-stack%> is not supported by " |
840 | "this compiler configuration"); | |
d5478783 | 841 | opts->x_flag_split_stack = 0; |
7458026b ILT |
842 | } |
843 | } | |
bfe068c3 | 844 | |
d6d11272 XDL |
845 | /* Tune vectorization related parametees according to cost model. */ |
846 | if (opts->x_flag_vect_cost_model == VECT_COST_MODEL_CHEAP) | |
847 | { | |
848 | maybe_set_param_value (PARAM_VECT_MAX_VERSION_FOR_ALIAS_CHECKS, | |
849 | 6, opts->x_param_values, opts_set->x_param_values); | |
850 | maybe_set_param_value (PARAM_VECT_MAX_VERSION_FOR_ALIGNMENT_CHECKS, | |
851 | 0, opts->x_param_values, opts_set->x_param_values); | |
852 | maybe_set_param_value (PARAM_VECT_MAX_PEELING_FOR_ALIGNMENT, | |
853 | 0, opts->x_param_values, opts_set->x_param_values); | |
854 | } | |
855 | ||
bfe068c3 IR |
856 | /* Set PARAM_MAX_STORES_TO_SINK to 0 if either vectorization or if-conversion |
857 | is disabled. */ | |
ea0f3e87 XDL |
858 | if ((!opts->x_flag_tree_loop_vectorize && !opts->x_flag_tree_slp_vectorize) |
859 | || !opts->x_flag_tree_loop_if_convert) | |
bfe068c3 IR |
860 | maybe_set_param_value (PARAM_MAX_STORES_TO_SINK, 0, |
861 | opts->x_param_values, opts_set->x_param_values); | |
e9f8dcf9 | 862 | |
99ea153e SA |
863 | /* The -gsplit-dwarf option requires -gpubnames. */ |
864 | if (opts->x_dwarf_split_debug_info) | |
865 | opts->x_debug_generate_pub_sections = 1; | |
9756310a NB |
866 | } |
867 | ||
c662432e NC |
868 | #define LEFT_COLUMN 27 |
869 | ||
870 | /* Output ITEM, of length ITEM_WIDTH, in the left column, | |
871 | followed by word-wrapped HELP in a second column. */ | |
872 | static void | |
873 | wrap_help (const char *help, | |
874 | const char *item, | |
875 | unsigned int item_width, | |
876 | unsigned int columns) | |
877 | { | |
878 | unsigned int col_width = LEFT_COLUMN; | |
879 | unsigned int remaining, room, len; | |
880 | ||
881 | remaining = strlen (help); | |
882 | ||
883 | do | |
884 | { | |
885 | room = columns - 3 - MAX (col_width, item_width); | |
886 | if (room > columns) | |
887 | room = 0; | |
888 | len = remaining; | |
889 | ||
890 | if (room < len) | |
891 | { | |
892 | unsigned int i; | |
893 | ||
894 | for (i = 0; help[i]; i++) | |
895 | { | |
896 | if (i >= room && len != remaining) | |
897 | break; | |
898 | if (help[i] == ' ') | |
899 | len = i; | |
900 | else if ((help[i] == '-' || help[i] == '/') | |
901 | && help[i + 1] != ' ' | |
902 | && i > 0 && ISALPHA (help[i - 1])) | |
903 | len = i + 1; | |
904 | } | |
905 | } | |
906 | ||
c3284718 | 907 | printf (" %-*.*s %.*s\n", col_width, item_width, item, len, help); |
c662432e NC |
908 | item_width = 0; |
909 | while (help[len] == ' ') | |
910 | len++; | |
911 | help += len; | |
912 | remaining -= len; | |
913 | } | |
914 | while (remaining); | |
915 | } | |
916 | ||
917 | /* Print help for a specific front-end, etc. */ | |
918 | static void | |
919 | print_filtered_help (unsigned int include_flags, | |
920 | unsigned int exclude_flags, | |
921 | unsigned int any_flags, | |
0576d21f | 922 | unsigned int columns, |
e6d4b984 JM |
923 | struct gcc_options *opts, |
924 | unsigned int lang_mask) | |
c662432e NC |
925 | { |
926 | unsigned int i; | |
927 | const char *help; | |
c662432e NC |
928 | bool found = false; |
929 | bool displayed = false; | |
930 | ||
931 | if (include_flags == CL_PARAMS) | |
932 | { | |
933 | for (i = 0; i < LAST_PARAM; i++) | |
934 | { | |
935 | const char *param = compiler_params[i].option; | |
936 | ||
937 | help = compiler_params[i].help; | |
938 | if (help == NULL || *help == '\0') | |
939 | { | |
940 | if (exclude_flags & CL_UNDOCUMENTED) | |
941 | continue; | |
942 | help = undocumented_msg; | |
943 | } | |
944 | ||
945 | /* Get the translation. */ | |
946 | help = _(help); | |
947 | ||
948 | wrap_help (help, param, strlen (param), columns); | |
949 | } | |
950 | putchar ('\n'); | |
951 | return; | |
952 | } | |
953 | ||
299404a1 JM |
954 | if (!opts->x_help_printed) |
955 | opts->x_help_printed = XCNEWVAR (char, cl_options_count); | |
c662432e | 956 | |
e6d4b984 JM |
957 | if (!opts->x_help_enum_printed) |
958 | opts->x_help_enum_printed = XCNEWVAR (char, cl_enums_count); | |
959 | ||
c662432e NC |
960 | for (i = 0; i < cl_options_count; i++) |
961 | { | |
0576d21f | 962 | char new_help[128]; |
c662432e NC |
963 | const struct cl_option *option = cl_options + i; |
964 | unsigned int len; | |
965 | const char *opt; | |
966 | const char *tab; | |
967 | ||
968 | if (include_flags == 0 | |
969 | || ((option->flags & include_flags) != include_flags)) | |
970 | { | |
971 | if ((option->flags & any_flags) == 0) | |
972 | continue; | |
973 | } | |
974 | ||
975 | /* Skip unwanted switches. */ | |
976 | if ((option->flags & exclude_flags) != 0) | |
977 | continue; | |
978 | ||
603349bf JM |
979 | /* The driver currently prints its own help text. */ |
980 | if ((option->flags & CL_DRIVER) != 0 | |
981 | && (option->flags & (((1U << cl_lang_count) - 1) | |
982 | | CL_COMMON | CL_TARGET)) == 0) | |
983 | continue; | |
984 | ||
c662432e NC |
985 | found = true; |
986 | /* Skip switches that have already been printed. */ | |
299404a1 | 987 | if (opts->x_help_printed[i]) |
c662432e NC |
988 | continue; |
989 | ||
299404a1 | 990 | opts->x_help_printed[i] = true; |
c662432e NC |
991 | |
992 | help = option->help; | |
993 | if (help == NULL) | |
994 | { | |
995 | if (exclude_flags & CL_UNDOCUMENTED) | |
996 | continue; | |
997 | help = undocumented_msg; | |
998 | } | |
999 | ||
1000 | /* Get the translation. */ | |
1001 | help = _(help); | |
1002 | ||
1003 | /* Find the gap between the name of the | |
1004 | option and its descriptive text. */ | |
1005 | tab = strchr (help, '\t'); | |
1006 | if (tab) | |
1007 | { | |
1008 | len = tab - help; | |
1009 | opt = help; | |
1010 | help = tab + 1; | |
1011 | } | |
1012 | else | |
1013 | { | |
1014 | opt = option->opt_text; | |
1015 | len = strlen (opt); | |
1016 | } | |
1017 | ||
1018 | /* With the -Q option enabled we change the descriptive text associated | |
1019 | with an option to be an indication of its current setting. */ | |
a7d0d30f | 1020 | if (!opts->x_quiet_flag) |
c662432e | 1021 | { |
0576d21f | 1022 | void *flag_var = option_flag_var (i, opts); |
46625112 | 1023 | |
c662432e NC |
1024 | if (len < (LEFT_COLUMN + 2)) |
1025 | strcpy (new_help, "\t\t"); | |
1026 | else | |
1027 | strcpy (new_help, "\t"); | |
1028 | ||
21bf1558 JM |
1029 | if (flag_var != NULL |
1030 | && option->var_type != CLVC_DEFER) | |
c662432e NC |
1031 | { |
1032 | if (option->flags & CL_JOINED) | |
1033 | { | |
1034 | if (option->var_type == CLVC_STRING) | |
1035 | { | |
46625112 | 1036 | if (* (const char **) flag_var != NULL) |
c662432e NC |
1037 | snprintf (new_help + strlen (new_help), |
1038 | sizeof (new_help) - strlen (new_help), | |
46625112 | 1039 | * (const char **) flag_var); |
c662432e | 1040 | } |
e6d4b984 JM |
1041 | else if (option->var_type == CLVC_ENUM) |
1042 | { | |
1043 | const struct cl_enum *e = &cl_enums[option->var_enum]; | |
1044 | int value; | |
1045 | const char *arg = NULL; | |
1046 | ||
1047 | value = e->get (flag_var); | |
1048 | enum_value_to_arg (e->values, &arg, value, lang_mask); | |
1049 | if (arg == NULL) | |
1050 | arg = _("[default]"); | |
1051 | snprintf (new_help + strlen (new_help), | |
1052 | sizeof (new_help) - strlen (new_help), | |
1053 | arg); | |
1054 | } | |
c662432e NC |
1055 | else |
1056 | sprintf (new_help + strlen (new_help), | |
46625112 | 1057 | "%#x", * (int *) flag_var); |
c662432e NC |
1058 | } |
1059 | else | |
0576d21f | 1060 | strcat (new_help, option_enabled (i, opts) |
c662432e NC |
1061 | ? _("[enabled]") : _("[disabled]")); |
1062 | } | |
1063 | ||
1064 | help = new_help; | |
1065 | } | |
1066 | ||
1067 | wrap_help (help, opt, len, columns); | |
1068 | displayed = true; | |
e6d4b984 JM |
1069 | |
1070 | if (option->var_type == CLVC_ENUM | |
1071 | && opts->x_help_enum_printed[option->var_enum] != 2) | |
1072 | opts->x_help_enum_printed[option->var_enum] = 1; | |
c662432e NC |
1073 | } |
1074 | ||
1075 | if (! found) | |
b3eaaf1a NC |
1076 | { |
1077 | unsigned int langs = include_flags & CL_LANG_ALL; | |
1078 | ||
1079 | if (langs == 0) | |
1080 | printf (_(" No options with the desired characteristics were found\n")); | |
1081 | else | |
1082 | { | |
1083 | unsigned int i; | |
1084 | ||
1085 | /* PR 31349: Tell the user how to see all of the | |
1086 | options supported by a specific front end. */ | |
1087 | for (i = 0; (1U << i) < CL_LANG_ALL; i ++) | |
1088 | if ((1U << i) & langs) | |
1089 | printf (_(" None found. Use --help=%s to show *all* the options supported by the %s front-end\n"), | |
1090 | lang_names[i], lang_names[i]); | |
1091 | } | |
b8698a0f | 1092 | |
b3eaaf1a | 1093 | } |
c662432e NC |
1094 | else if (! displayed) |
1095 | printf (_(" All options with the desired characteristics have already been displayed\n")); | |
1096 | ||
1097 | putchar ('\n'); | |
e6d4b984 JM |
1098 | |
1099 | /* Print details of enumerated option arguments, if those | |
1100 | enumerations have help text headings provided. If no help text | |
1101 | is provided, presume that the possible values are listed in the | |
1102 | help text for the relevant options. */ | |
1103 | for (i = 0; i < cl_enums_count; i++) | |
1104 | { | |
1105 | unsigned int j, pos; | |
1106 | ||
1107 | if (opts->x_help_enum_printed[i] != 1) | |
1108 | continue; | |
1109 | if (cl_enums[i].help == NULL) | |
1110 | continue; | |
1111 | printf (" %s\n ", _(cl_enums[i].help)); | |
1112 | pos = 4; | |
1113 | for (j = 0; cl_enums[i].values[j].arg != NULL; j++) | |
1114 | { | |
1115 | unsigned int len = strlen (cl_enums[i].values[j].arg); | |
1116 | ||
1117 | if (pos > 4 && pos + 1 + len <= columns) | |
1118 | { | |
1119 | printf (" %s", cl_enums[i].values[j].arg); | |
1120 | pos += 1 + len; | |
1121 | } | |
1122 | else | |
1123 | { | |
1124 | if (pos > 4) | |
1125 | { | |
1126 | printf ("\n "); | |
1127 | pos = 4; | |
1128 | } | |
1129 | printf ("%s", cl_enums[i].values[j].arg); | |
1130 | pos += len; | |
1131 | } | |
1132 | } | |
1133 | printf ("\n\n"); | |
1134 | opts->x_help_enum_printed[i] = 2; | |
1135 | } | |
c662432e NC |
1136 | } |
1137 | ||
1138 | /* Display help for a specified type of option. | |
1139 | The options must have ALL of the INCLUDE_FLAGS set | |
1140 | ANY of the flags in the ANY_FLAGS set | |
0576d21f | 1141 | and NONE of the EXCLUDE_FLAGS set. The current option state is in |
e6d4b984 | 1142 | OPTS; LANG_MASK is used for interpreting enumerated option state. */ |
c662432e NC |
1143 | static void |
1144 | print_specific_help (unsigned int include_flags, | |
1145 | unsigned int exclude_flags, | |
0576d21f | 1146 | unsigned int any_flags, |
e6d4b984 JM |
1147 | struct gcc_options *opts, |
1148 | unsigned int lang_mask) | |
c662432e NC |
1149 | { |
1150 | unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1151 | const char * description = NULL; | |
1152 | const char * descrip_extra = ""; | |
1153 | size_t i; | |
1154 | unsigned int flag; | |
c662432e NC |
1155 | |
1156 | /* Sanity check: Make sure that we do not have more | |
1157 | languages than we have bits available to enumerate them. */ | |
58265ea6 | 1158 | gcc_assert ((1U << cl_lang_count) <= CL_MIN_OPTION_CLASS); |
c662432e NC |
1159 | |
1160 | /* If we have not done so already, obtain | |
1161 | the desired maximum width of the output. */ | |
299404a1 | 1162 | if (opts->x_help_columns == 0) |
c662432e NC |
1163 | { |
1164 | const char *p; | |
1165 | ||
71f3e391 | 1166 | p = getenv ("COLUMNS"); |
c662432e NC |
1167 | if (p != NULL) |
1168 | { | |
1169 | int value = atoi (p); | |
1170 | ||
1171 | if (value > 0) | |
299404a1 | 1172 | opts->x_help_columns = value; |
c662432e NC |
1173 | } |
1174 | ||
299404a1 | 1175 | if (opts->x_help_columns == 0) |
c662432e | 1176 | /* Use a reasonable default. */ |
299404a1 | 1177 | opts->x_help_columns = 80; |
c662432e NC |
1178 | } |
1179 | ||
1180 | /* Decide upon the title for the options that we are going to display. */ | |
1181 | for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++) | |
1182 | { | |
1183 | switch (flag & include_flags) | |
1184 | { | |
1185 | case 0: | |
603349bf | 1186 | case CL_DRIVER: |
c662432e NC |
1187 | break; |
1188 | ||
1189 | case CL_TARGET: | |
1190 | description = _("The following options are target specific"); | |
1191 | break; | |
1192 | case CL_WARNING: | |
1193 | description = _("The following options control compiler warning messages"); | |
1194 | break; | |
1195 | case CL_OPTIMIZATION: | |
1196 | description = _("The following options control optimizations"); | |
1197 | break; | |
1198 | case CL_COMMON: | |
1199 | description = _("The following options are language-independent"); | |
1200 | break; | |
1201 | case CL_PARAMS: | |
1202 | description = _("The --param option recognizes the following as parameters"); | |
1203 | break; | |
1204 | default: | |
1205 | if (i >= cl_lang_count) | |
1206 | break; | |
0631b69f | 1207 | if (exclude_flags & all_langs_mask) |
c01c261d | 1208 | description = _("The following options are specific to just the language "); |
c662432e | 1209 | else |
b5456e04 | 1210 | description = _("The following options are supported by the language "); |
b3eaaf1a | 1211 | descrip_extra = lang_names [i]; |
c662432e NC |
1212 | break; |
1213 | } | |
1214 | } | |
1215 | ||
1216 | if (description == NULL) | |
1217 | { | |
1218 | if (any_flags == 0) | |
1219 | { | |
0631b69f | 1220 | if (include_flags & CL_UNDOCUMENTED) |
c662432e | 1221 | description = _("The following options are not documented"); |
0631b69f RW |
1222 | else if (include_flags & CL_SEPARATE) |
1223 | description = _("The following options take separate arguments"); | |
1224 | else if (include_flags & CL_JOINED) | |
1225 | description = _("The following options take joined arguments"); | |
c662432e NC |
1226 | else |
1227 | { | |
1228 | internal_error ("unrecognized include_flags 0x%x passed to print_specific_help", | |
1229 | include_flags); | |
1230 | return; | |
1231 | } | |
1232 | } | |
1233 | else | |
1234 | { | |
1235 | if (any_flags & all_langs_mask) | |
1236 | description = _("The following options are language-related"); | |
1237 | else | |
1238 | description = _("The following options are language-independent"); | |
1239 | } | |
1240 | } | |
1241 | ||
1242 | printf ("%s%s:\n", description, descrip_extra); | |
299404a1 | 1243 | print_filtered_help (include_flags, exclude_flags, any_flags, |
e6d4b984 | 1244 | opts->x_help_columns, opts, lang_mask); |
c662432e NC |
1245 | } |
1246 | ||
d7b42618 | 1247 | /* Handle target- and language-independent options. Return zero to |
50431bc4 ZD |
1248 | generate an "unknown option" message. Only options that need |
1249 | extra handling need to be listed here; if you simply want | |
481e1176 | 1250 | DECODED->value assigned to a variable, it happens automatically. */ |
50431bc4 | 1251 | |
c98cd5bf | 1252 | bool |
46625112 | 1253 | common_handle_option (struct gcc_options *opts, |
d4d24ba4 | 1254 | struct gcc_options *opts_set, |
46625112 | 1255 | const struct cl_decoded_option *decoded, |
5f20c657 | 1256 | unsigned int lang_mask, int kind ATTRIBUTE_UNUSED, |
a4d8c676 | 1257 | location_t loc, |
d5478783 JM |
1258 | const struct cl_option_handlers *handlers, |
1259 | diagnostic_context *dc) | |
d7b42618 | 1260 | { |
481e1176 JM |
1261 | size_t scode = decoded->opt_index; |
1262 | const char *arg = decoded->arg; | |
1263 | int value = decoded->value; | |
d7b42618 NB |
1264 | enum opt_code code = (enum opt_code) scode; |
1265 | ||
481e1176 JM |
1266 | gcc_assert (decoded->canonical_option_num_elements <= 2); |
1267 | ||
d7b42618 NB |
1268 | switch (code) |
1269 | { | |
903caebf | 1270 | case OPT__param: |
299404a1 | 1271 | handle_param (opts, opts_set, loc, arg); |
903caebf NB |
1272 | break; |
1273 | ||
c662432e NC |
1274 | case OPT__help: |
1275 | { | |
1276 | unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1277 | unsigned int undoc_mask; | |
1278 | unsigned int i; | |
1279 | ||
a7d0d30f JM |
1280 | if (lang_mask == CL_DRIVER) |
1281 | break;; | |
1282 | ||
d5478783 JM |
1283 | undoc_mask = ((opts->x_verbose_flag | opts->x_extra_warnings) |
1284 | ? 0 | |
1285 | : CL_UNDOCUMENTED); | |
c662432e NC |
1286 | /* First display any single language specific options. */ |
1287 | for (i = 0; i < cl_lang_count; i++) | |
1288 | print_specific_help | |
e6d4b984 JM |
1289 | (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0, opts, |
1290 | lang_mask); | |
c662432e | 1291 | /* Next display any multi language specific options. */ |
e6d4b984 | 1292 | print_specific_help (0, undoc_mask, all_langs_mask, opts, lang_mask); |
c662432e NC |
1293 | /* Then display any remaining, non-language options. */ |
1294 | for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1) | |
603349bf | 1295 | if (i != CL_DRIVER) |
e6d4b984 | 1296 | print_specific_help (i, undoc_mask, 0, opts, lang_mask); |
0576d21f | 1297 | opts->x_exit_after_options = true; |
c662432e NC |
1298 | break; |
1299 | } | |
1300 | ||
d185d268 | 1301 | case OPT__target_help: |
a7d0d30f JM |
1302 | if (lang_mask == CL_DRIVER) |
1303 | break; | |
1304 | ||
e6d4b984 | 1305 | print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0, opts, lang_mask); |
0576d21f | 1306 | opts->x_exit_after_options = true; |
d185d268 NB |
1307 | break; |
1308 | ||
c662432e NC |
1309 | case OPT__help_: |
1310 | { | |
1311 | const char * a = arg; | |
1312 | unsigned int include_flags = 0; | |
1313 | /* Note - by default we include undocumented options when listing | |
1314 | specific classes. If you only want to see documented options | |
fa10beec | 1315 | then add ",^undocumented" to the --help= option. E.g.: |
c662432e NC |
1316 | |
1317 | --help=target,^undocumented */ | |
1318 | unsigned int exclude_flags = 0; | |
1319 | ||
a7d0d30f JM |
1320 | if (lang_mask == CL_DRIVER) |
1321 | break; | |
1322 | ||
c662432e NC |
1323 | /* Walk along the argument string, parsing each word in turn. |
1324 | The format is: | |
1325 | arg = [^]{word}[,{arg}] | |
b5456e04 BM |
1326 | word = {optimizers|target|warnings|undocumented| |
1327 | params|common|<language>} */ | |
c662432e NC |
1328 | while (* a != 0) |
1329 | { | |
0576d21f | 1330 | static const struct |
c662432e NC |
1331 | { |
1332 | const char * string; | |
1333 | unsigned int flag; | |
1334 | } | |
1335 | specifics[] = | |
1336 | { | |
1337 | { "optimizers", CL_OPTIMIZATION }, | |
1338 | { "target", CL_TARGET }, | |
1339 | { "warnings", CL_WARNING }, | |
1340 | { "undocumented", CL_UNDOCUMENTED }, | |
1341 | { "params", CL_PARAMS }, | |
66811228 RW |
1342 | { "joined", CL_JOINED }, |
1343 | { "separate", CL_SEPARATE }, | |
b5456e04 | 1344 | { "common", CL_COMMON }, |
c662432e NC |
1345 | { NULL, 0 } |
1346 | }; | |
1347 | unsigned int * pflags; | |
86373e7e | 1348 | const char * comma; |
b3eaaf1a | 1349 | unsigned int lang_flag, specific_flag; |
c662432e NC |
1350 | unsigned int len; |
1351 | unsigned int i; | |
1352 | ||
1353 | if (* a == '^') | |
1354 | { | |
1355 | ++ a; | |
1356 | pflags = & exclude_flags; | |
1357 | } | |
1358 | else | |
1359 | pflags = & include_flags; | |
1360 | ||
1361 | comma = strchr (a, ','); | |
1362 | if (comma == NULL) | |
1363 | len = strlen (a); | |
1364 | else | |
1365 | len = comma - a; | |
0631b69f RW |
1366 | if (len == 0) |
1367 | { | |
1368 | a = comma + 1; | |
1369 | continue; | |
1370 | } | |
c662432e | 1371 | |
b3eaaf1a NC |
1372 | /* Check to see if the string matches an option class name. */ |
1373 | for (i = 0, specific_flag = 0; specifics[i].string != NULL; i++) | |
c662432e NC |
1374 | if (strncasecmp (a, specifics[i].string, len) == 0) |
1375 | { | |
b3eaaf1a NC |
1376 | specific_flag = specifics[i].flag; |
1377 | break; | |
1378 | } | |
0631b69f | 1379 | |
b3eaaf1a NC |
1380 | /* Check to see if the string matches a language name. |
1381 | Note - we rely upon the alpha-sorted nature of the entries in | |
1382 | the lang_names array, specifically that shorter names appear | |
fa10beec | 1383 | before their longer variants. (i.e. C before C++). That way |
b3eaaf1a NC |
1384 | when we are attempting to match --help=c for example we will |
1385 | match with C first and not C++. */ | |
1386 | for (i = 0, lang_flag = 0; i < cl_lang_count; i++) | |
1387 | if (strncasecmp (a, lang_names[i], len) == 0) | |
1388 | { | |
1389 | lang_flag = 1U << i; | |
c662432e NC |
1390 | break; |
1391 | } | |
1392 | ||
b3eaaf1a | 1393 | if (specific_flag != 0) |
c662432e | 1394 | { |
b3eaaf1a NC |
1395 | if (lang_flag == 0) |
1396 | * pflags |= specific_flag; | |
1397 | else | |
1398 | { | |
1399 | /* The option's argument matches both the start of a | |
1400 | language name and the start of an option class name. | |
1401 | We have a special case for when the user has | |
1402 | specified "--help=c", but otherwise we have to issue | |
1403 | a warning. */ | |
1404 | if (strncasecmp (a, "c", len) == 0) | |
1405 | * pflags |= lang_flag; | |
1406 | else | |
299404a1 JM |
1407 | warning_at (loc, 0, |
1408 | "--help argument %q.*s is ambiguous, " | |
1409 | "please be more specific", | |
1410 | len, a); | |
b3eaaf1a | 1411 | } |
c662432e | 1412 | } |
b3eaaf1a NC |
1413 | else if (lang_flag != 0) |
1414 | * pflags |= lang_flag; | |
1415 | else | |
299404a1 JM |
1416 | warning_at (loc, 0, |
1417 | "unrecognized argument to --help= option: %q.*s", | |
1418 | len, a); | |
c662432e NC |
1419 | |
1420 | if (comma == NULL) | |
1421 | break; | |
1422 | a = comma + 1; | |
1423 | } | |
1424 | ||
1425 | if (include_flags) | |
e6d4b984 JM |
1426 | print_specific_help (include_flags, exclude_flags, 0, opts, |
1427 | lang_mask); | |
0576d21f | 1428 | opts->x_exit_after_options = true; |
c662432e NC |
1429 | break; |
1430 | } | |
1431 | ||
d185d268 | 1432 | case OPT__version: |
a7d0d30f JM |
1433 | if (lang_mask == CL_DRIVER) |
1434 | break; | |
1435 | ||
0576d21f | 1436 | opts->x_exit_after_options = true; |
d185d268 NB |
1437 | break; |
1438 | ||
de5a5fa1 MP |
1439 | case OPT_fsanitize_: |
1440 | { | |
1441 | const char *p = arg; | |
1442 | while (*p != 0) | |
1443 | { | |
1444 | static const struct | |
1445 | { | |
1446 | const char *const name; | |
1447 | unsigned int flag; | |
1448 | size_t len; | |
1449 | } spec[] = | |
1450 | { | |
1451 | { "address", SANITIZE_ADDRESS, sizeof "address" - 1 }, | |
1452 | { "thread", SANITIZE_THREAD, sizeof "thread" - 1 }, | |
9065ada9 | 1453 | { "leak", SANITIZE_LEAK, sizeof "leak" - 1 }, |
de5a5fa1 MP |
1454 | { "shift", SANITIZE_SHIFT, sizeof "shift" - 1 }, |
1455 | { "integer-divide-by-zero", SANITIZE_DIVIDE, | |
1456 | sizeof "integer-divide-by-zero" - 1 }, | |
1457 | { "undefined", SANITIZE_UNDEFINED, sizeof "undefined" - 1 }, | |
1458 | { "unreachable", SANITIZE_UNREACHABLE, | |
1459 | sizeof "unreachable" - 1 }, | |
b906f4ca | 1460 | { "vla-bound", SANITIZE_VLA, sizeof "vla-bound" - 1 }, |
0a508bb6 | 1461 | { "return", SANITIZE_RETURN, sizeof "return" - 1 }, |
b9a55b13 | 1462 | { "null", SANITIZE_NULL, sizeof "null" - 1 }, |
31e071ae MP |
1463 | { "signed-integer-overflow", SANITIZE_SI_OVERFLOW, |
1464 | sizeof "signed-integer-overflow" -1 }, | |
ac0ff9f2 JJ |
1465 | { "bool", SANITIZE_BOOL, sizeof "bool" - 1 }, |
1466 | { "enum", SANITIZE_ENUM, sizeof "enum" - 1 }, | |
de5a5fa1 MP |
1467 | { NULL, 0, 0 } |
1468 | }; | |
1469 | const char *comma; | |
1470 | size_t len, i; | |
1471 | bool found = false; | |
1472 | ||
1473 | comma = strchr (p, ','); | |
1474 | if (comma == NULL) | |
1475 | len = strlen (p); | |
1476 | else | |
1477 | len = comma - p; | |
1478 | if (len == 0) | |
1479 | { | |
1480 | p = comma + 1; | |
1481 | continue; | |
1482 | } | |
1483 | ||
1484 | /* Check to see if the string matches an option class name. */ | |
1485 | for (i = 0; spec[i].name != NULL; ++i) | |
1486 | if (len == spec[i].len | |
1487 | && memcmp (p, spec[i].name, len) == 0) | |
1488 | { | |
1489 | /* Handle both -fsanitize and -fno-sanitize cases. */ | |
1490 | if (value) | |
1491 | flag_sanitize |= spec[i].flag; | |
1492 | else | |
1493 | flag_sanitize &= ~spec[i].flag; | |
1494 | found = true; | |
1495 | break; | |
1496 | } | |
1497 | ||
1498 | if (! found) | |
1499 | warning_at (loc, 0, | |
1500 | "unrecognized argument to -fsanitize= option: %q.*s", | |
1501 | (int) len, p); | |
1502 | ||
1503 | if (comma == NULL) | |
1504 | break; | |
1505 | p = comma + 1; | |
1506 | } | |
1507 | ||
b9a55b13 MP |
1508 | /* When instrumenting the pointers, we don't want to remove |
1509 | the null pointer checks. */ | |
1510 | if (flag_sanitize & SANITIZE_NULL) | |
1511 | opts->x_flag_delete_null_pointer_checks = 0; | |
de5a5fa1 MP |
1512 | break; |
1513 | } | |
1514 | ||
903caebf NB |
1515 | case OPT_O: |
1516 | case OPT_Os: | |
c3a02647 | 1517 | case OPT_Ofast: |
bf7a7185 | 1518 | case OPT_Og: |
903caebf NB |
1519 | /* Currently handled in a prescan. */ |
1520 | break; | |
1521 | ||
aee15221 RG |
1522 | case OPT_Werror: |
1523 | dc->warning_as_error_requested = value; | |
1524 | break; | |
1525 | ||
79cf5994 | 1526 | case OPT_Werror_: |
a7d0d30f JM |
1527 | if (lang_mask == CL_DRIVER) |
1528 | break; | |
1529 | ||
c5fa0890 JM |
1530 | enable_warning_as_error (arg, value, lang_mask, handlers, |
1531 | opts, opts_set, loc, dc); | |
79cf5994 DD |
1532 | break; |
1533 | ||
e01cc6dc | 1534 | case OPT_Wlarger_than_: |
d5478783 JM |
1535 | opts->x_larger_than_size = value; |
1536 | opts->x_warn_larger_than = value != -1; | |
e01cc6dc NB |
1537 | break; |
1538 | ||
5f0f4a3b | 1539 | case OPT_Wfatal_errors: |
d5478783 | 1540 | dc->fatal_errors = value; |
5f0f4a3b JM |
1541 | break; |
1542 | ||
a214518f | 1543 | case OPT_Wframe_larger_than_: |
d5478783 JM |
1544 | opts->x_frame_larger_than_size = value; |
1545 | opts->x_warn_frame_larger_than = value != -1; | |
a214518f SP |
1546 | break; |
1547 | ||
a11e0df4 EB |
1548 | case OPT_Wstack_usage_: |
1549 | opts->x_warn_stack_usage = value; | |
1550 | opts->x_flag_stack_usage_info = value != -1; | |
1551 | break; | |
1552 | ||
e01cc6dc | 1553 | case OPT_Wstrict_aliasing: |
d5478783 | 1554 | set_Wstrict_aliasing (opts, value); |
e01cc6dc NB |
1555 | break; |
1556 | ||
6ac01510 | 1557 | case OPT_Wstrict_overflow: |
d5478783 JM |
1558 | opts->x_warn_strict_overflow = (value |
1559 | ? (int) WARN_STRICT_OVERFLOW_CONDITIONAL | |
1560 | : 0); | |
6ac01510 ILT |
1561 | break; |
1562 | ||
5f0f4a3b | 1563 | case OPT_Wsystem_headers: |
d5478783 | 1564 | dc->dc_warn_system_headers = value; |
903caebf NB |
1565 | break; |
1566 | ||
d185d268 | 1567 | case OPT_aux_info: |
d5478783 | 1568 | opts->x_flag_gen_aux_info = 1; |
d185d268 NB |
1569 | break; |
1570 | ||
1571 | case OPT_auxbase_strip: | |
1572 | { | |
1573 | char *tmp = xstrdup (arg); | |
1574 | strip_off_ending (tmp, strlen (tmp)); | |
1575 | if (tmp[0]) | |
d5478783 | 1576 | opts->x_aux_base_name = tmp; |
fc429b48 TB |
1577 | else |
1578 | free (tmp); | |
d185d268 NB |
1579 | } |
1580 | break; | |
1581 | ||
1582 | case OPT_d: | |
299404a1 | 1583 | decode_d_option (arg, opts, loc, dc); |
d185d268 NB |
1584 | break; |
1585 | ||
058de654 | 1586 | case OPT_fcall_used_: |
058de654 | 1587 | case OPT_fcall_saved_: |
21bf1558 | 1588 | /* Deferred. */ |
058de654 | 1589 | break; |
6fb5fa3c DB |
1590 | |
1591 | case OPT_fdbg_cnt_: | |
0a090f42 | 1592 | case OPT_fdbg_cnt_list: |
299404a1 | 1593 | /* Deferred. */ |
0a090f42 | 1594 | break; |
058de654 | 1595 | |
c8aea42c | 1596 | case OPT_fdebug_prefix_map_: |
299404a1 | 1597 | /* Deferred. */ |
c8aea42c PB |
1598 | break; |
1599 | ||
de32c0cb | 1600 | case OPT_fdiagnostics_show_location_: |
e6d4b984 | 1601 | diagnostic_prefixing_rule (dc) = (diagnostic_prefixing_rule_t) value; |
de32c0cb | 1602 | break; |
9fec0042 MLI |
1603 | |
1604 | case OPT_fdiagnostics_show_caret: | |
1605 | dc->show_caret = value; | |
1606 | break; | |
de32c0cb | 1607 | |
4b84d650 JJ |
1608 | case OPT_fdiagnostics_color_: |
1609 | pp_show_color (dc->printer) | |
1610 | = colorize_init ((diagnostic_color_rule_t) value); | |
1611 | break; | |
1612 | ||
2098fe9e | 1613 | case OPT_fdiagnostics_show_option: |
d5478783 | 1614 | dc->show_option_requested = value; |
2098fe9e DD |
1615 | break; |
1616 | ||
6de9cd9a | 1617 | case OPT_fdump_: |
21bf1558 | 1618 | /* Deferred. */ |
6de9cd9a DN |
1619 | break; |
1620 | ||
058de654 | 1621 | case OPT_ffast_math: |
d5478783 | 1622 | set_fast_math_flags (opts, value); |
058de654 NB |
1623 | break; |
1624 | ||
a1a82611 | 1625 | case OPT_funsafe_math_optimizations: |
d5478783 | 1626 | set_unsafe_math_optimizations_flags (opts, value); |
a1a82611 RE |
1627 | break; |
1628 | ||
058de654 | 1629 | case OPT_ffixed_: |
21bf1558 | 1630 | /* Deferred. */ |
058de654 NB |
1631 | break; |
1632 | ||
d302c9d6 | 1633 | case OPT_finline_limit_: |
48476d13 JM |
1634 | set_param_value ("max-inline-insns-single", value / 2, |
1635 | opts->x_param_values, opts_set->x_param_values); | |
1636 | set_param_value ("max-inline-insns-auto", value / 2, | |
1637 | opts->x_param_values, opts_set->x_param_values); | |
d302c9d6 NB |
1638 | break; |
1639 | ||
8d5a7d1f | 1640 | case OPT_finstrument_functions_exclude_function_list_: |
1ebc7e68 | 1641 | add_comma_separated_to_vector |
6a1f6c9c | 1642 | (&opts->x_flag_instrument_functions_exclude_functions, arg); |
8d5a7d1f ILT |
1643 | break; |
1644 | ||
1645 | case OPT_finstrument_functions_exclude_file_list_: | |
1ebc7e68 | 1646 | add_comma_separated_to_vector |
6a1f6c9c | 1647 | (&opts->x_flag_instrument_functions_exclude_files, arg); |
8d5a7d1f ILT |
1648 | break; |
1649 | ||
de32c0cb | 1650 | case OPT_fmessage_length_: |
d5478783 | 1651 | pp_set_line_maximum_length (dc->printer, value); |
9fec0042 | 1652 | diagnostic_set_caret_max_width (dc, value); |
de32c0cb NB |
1653 | break; |
1654 | ||
78c60e3d SS |
1655 | case OPT_fopt_info: |
1656 | case OPT_fopt_info_: | |
1657 | /* Deferred. */ | |
1658 | break; | |
1659 | ||
467cecf3 JB |
1660 | case OPT_fpack_struct_: |
1661 | if (value <= 0 || (value & (value - 1)) || value > 16) | |
299404a1 JM |
1662 | error_at (loc, |
1663 | "structure alignment must be a small power of two, not %d", | |
1664 | value); | |
467cecf3 | 1665 | else |
299404a1 | 1666 | opts->x_initial_max_fld_align = value; |
467cecf3 JB |
1667 | break; |
1668 | ||
68a607d8 | 1669 | case OPT_fplugin_: |
68a607d8 | 1670 | case OPT_fplugin_arg_: |
21bf1558 | 1671 | /* Deferred. */ |
68a607d8 DN |
1672 | break; |
1673 | ||
2f908293 | 1674 | case OPT_fprofile_use_: |
0576d21f | 1675 | opts->x_profile_data_prefix = xstrdup (arg); |
d5478783 | 1676 | opts->x_flag_profile_use = true; |
2f908293 SP |
1677 | value = true; |
1678 | /* No break here - do -fprofile-use processing. */ | |
a8a5f53a | 1679 | case OPT_fprofile_use: |
d4d24ba4 | 1680 | if (!opts_set->x_flag_branch_probabilities) |
d5478783 | 1681 | opts->x_flag_branch_probabilities = value; |
d4d24ba4 | 1682 | if (!opts_set->x_flag_profile_values) |
d5478783 | 1683 | opts->x_flag_profile_values = value; |
d4d24ba4 | 1684 | if (!opts_set->x_flag_unroll_loops) |
d5478783 | 1685 | opts->x_flag_unroll_loops = value; |
d4d24ba4 | 1686 | if (!opts_set->x_flag_peel_loops) |
d5478783 | 1687 | opts->x_flag_peel_loops = value; |
d4d24ba4 | 1688 | if (!opts_set->x_flag_tracer) |
d5478783 | 1689 | opts->x_flag_tracer = value; |
d4d24ba4 | 1690 | if (!opts_set->x_flag_value_profile_transformations) |
d5478783 | 1691 | opts->x_flag_value_profile_transformations = value; |
d4d24ba4 | 1692 | if (!opts_set->x_flag_inline_functions) |
d5478783 | 1693 | opts->x_flag_inline_functions = value; |
d4d24ba4 | 1694 | if (!opts_set->x_flag_ipa_cp) |
d5478783 | 1695 | opts->x_flag_ipa_cp = value; |
d4d24ba4 | 1696 | if (!opts_set->x_flag_ipa_cp_clone |
d5478783 JM |
1697 | && value && opts->x_flag_ipa_cp) |
1698 | opts->x_flag_ipa_cp_clone = value; | |
d4d24ba4 | 1699 | if (!opts_set->x_flag_predictive_commoning) |
d5478783 | 1700 | opts->x_flag_predictive_commoning = value; |
d4d24ba4 | 1701 | if (!opts_set->x_flag_unswitch_loops) |
d5478783 | 1702 | opts->x_flag_unswitch_loops = value; |
d4d24ba4 | 1703 | if (!opts_set->x_flag_gcse_after_reload) |
d5478783 | 1704 | opts->x_flag_gcse_after_reload = value; |
ea0f3e87 XDL |
1705 | if (!opts_set->x_flag_tree_loop_vectorize |
1706 | && !opts_set->x_flag_tree_vectorize) | |
1707 | opts->x_flag_tree_loop_vectorize = value; | |
1708 | if (!opts_set->x_flag_tree_slp_vectorize | |
1709 | && !opts_set->x_flag_tree_vectorize) | |
1710 | opts->x_flag_tree_slp_vectorize = value; | |
f56f2d33 | 1711 | if (!opts_set->x_flag_vect_cost_model) |
d6d11272 | 1712 | opts->x_flag_vect_cost_model = VECT_COST_MODEL_DYNAMIC; |
f56f2d33 JH |
1713 | if (!opts_set->x_flag_tree_loop_distribute_patterns) |
1714 | opts->x_flag_tree_loop_distribute_patterns = value; | |
9cec31f4 ML |
1715 | if (!opts_set->x_flag_profile_reorder_functions) |
1716 | opts->x_flag_profile_reorder_functions = value; | |
bbc9396b | 1717 | /* Indirect call profiling should do all useful transformations |
a88bf705 | 1718 | speculative devirtualization does. */ |
bbc9396b JH |
1719 | if (!opts_set->x_flag_devirtualize_speculatively |
1720 | && opts->x_flag_value_profile_transformations) | |
1721 | opts->x_flag_devirtualize_speculatively = false; | |
a8a5f53a JH |
1722 | break; |
1723 | ||
2f908293 | 1724 | case OPT_fprofile_generate_: |
0576d21f | 1725 | opts->x_profile_data_prefix = xstrdup (arg); |
2f908293 SP |
1726 | value = true; |
1727 | /* No break here - do -fprofile-generate processing. */ | |
a8a5f53a | 1728 | case OPT_fprofile_generate: |
d4d24ba4 | 1729 | if (!opts_set->x_profile_arc_flag) |
d5478783 | 1730 | opts->x_profile_arc_flag = value; |
d4d24ba4 | 1731 | if (!opts_set->x_flag_profile_values) |
d5478783 | 1732 | opts->x_flag_profile_values = value; |
d4d24ba4 | 1733 | if (!opts_set->x_flag_inline_functions) |
d5478783 | 1734 | opts->x_flag_inline_functions = value; |
b0223c3e JH |
1735 | /* FIXME: Instrumentation we insert makes ipa-reference bitmaps |
1736 | quadratic. Disable the pass until better memory representation | |
1737 | is done. */ | |
a7d0d30f | 1738 | if (!opts_set->x_flag_ipa_reference && opts->x_in_lto_p) |
b0223c3e | 1739 | opts->x_flag_ipa_reference = false; |
a8a5f53a JH |
1740 | break; |
1741 | ||
ea0f3e87 XDL |
1742 | case OPT_ftree_vectorize: |
1743 | if (!opts_set->x_flag_tree_loop_vectorize) | |
1744 | opts->x_flag_tree_loop_vectorize = value; | |
1745 | if (!opts_set->x_flag_tree_slp_vectorize) | |
1746 | opts->x_flag_tree_slp_vectorize = value; | |
1747 | break; | |
5f0f4a3b | 1748 | case OPT_fshow_column: |
d5478783 | 1749 | dc->show_column = value; |
5f0f4a3b JM |
1750 | break; |
1751 | ||
de32c0cb NB |
1752 | case OPT_frandom_seed: |
1753 | /* The real switch is -fno-random-seed. */ | |
1754 | if (value) | |
5f20c657 | 1755 | return false; |
299404a1 | 1756 | /* Deferred. */ |
de32c0cb NB |
1757 | break; |
1758 | ||
1759 | case OPT_frandom_seed_: | |
299404a1 | 1760 | /* Deferred. */ |
de32c0cb NB |
1761 | break; |
1762 | ||
de32c0cb NB |
1763 | case OPT_fsched_verbose_: |
1764 | #ifdef INSN_SCHEDULING | |
299404a1 | 1765 | /* Handled with Var in common.opt. */ |
de32c0cb NB |
1766 | break; |
1767 | #else | |
5f20c657 | 1768 | return false; |
de32c0cb NB |
1769 | #endif |
1770 | ||
569fa502 | 1771 | case OPT_fsched_stalled_insns_: |
d5478783 JM |
1772 | opts->x_flag_sched_stalled_insns = value; |
1773 | if (opts->x_flag_sched_stalled_insns == 0) | |
1774 | opts->x_flag_sched_stalled_insns = -1; | |
569fa502 DN |
1775 | break; |
1776 | ||
569fa502 | 1777 | case OPT_fsched_stalled_insns_dep_: |
d5478783 | 1778 | opts->x_flag_sched_stalled_insns_dep = value; |
569fa502 | 1779 | break; |
6ff3a151 | 1780 | |
b38f3813 EB |
1781 | case OPT_fstack_check_: |
1782 | if (!strcmp (arg, "no")) | |
5e471ea6 | 1783 | opts->x_flag_stack_check = NO_STACK_CHECK; |
b38f3813 EB |
1784 | else if (!strcmp (arg, "generic")) |
1785 | /* This is the old stack checking method. */ | |
5e471ea6 | 1786 | opts->x_flag_stack_check = STACK_CHECK_BUILTIN |
b38f3813 EB |
1787 | ? FULL_BUILTIN_STACK_CHECK |
1788 | : GENERIC_STACK_CHECK; | |
1789 | else if (!strcmp (arg, "specific")) | |
1790 | /* This is the new stack checking method. */ | |
5e471ea6 | 1791 | opts->x_flag_stack_check = STACK_CHECK_BUILTIN |
b38f3813 EB |
1792 | ? FULL_BUILTIN_STACK_CHECK |
1793 | : STACK_CHECK_STATIC_BUILTIN | |
1794 | ? STATIC_BUILTIN_STACK_CHECK | |
1795 | : GENERIC_STACK_CHECK; | |
1796 | else | |
299404a1 | 1797 | warning_at (loc, 0, "unknown stack check parameter \"%s\"", arg); |
b38f3813 EB |
1798 | break; |
1799 | ||
de32c0cb NB |
1800 | case OPT_fstack_limit: |
1801 | /* The real switch is -fno-stack-limit. */ | |
1802 | if (value) | |
5f20c657 | 1803 | return false; |
21bf1558 | 1804 | /* Deferred. */ |
de32c0cb NB |
1805 | break; |
1806 | ||
058de654 | 1807 | case OPT_fstack_limit_register_: |
058de654 | 1808 | case OPT_fstack_limit_symbol_: |
21bf1558 | 1809 | /* Deferred. */ |
058de654 NB |
1810 | break; |
1811 | ||
a11e0df4 EB |
1812 | case OPT_fstack_usage: |
1813 | opts->x_flag_stack_usage = value; | |
1814 | opts->x_flag_stack_usage_info = value != 0; | |
1815 | break; | |
1816 | ||
e01cc6dc | 1817 | case OPT_g: |
51b83fdd CC |
1818 | /* -g by itself should force -g2. */ |
1819 | if (*arg == '\0') | |
1820 | set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, "2", opts, opts_set, | |
1821 | loc); | |
1822 | else | |
1823 | set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg, opts, opts_set, | |
1824 | loc); | |
df38ffef NB |
1825 | break; |
1826 | ||
1827 | case OPT_gcoff: | |
299404a1 | 1828 | set_debug_level (SDB_DEBUG, false, arg, opts, opts_set, loc); |
df38ffef NB |
1829 | break; |
1830 | ||
6782438d | 1831 | case OPT_gdwarf: |
f0defe58 | 1832 | if (arg && strlen (arg) != 0) |
6782438d SKS |
1833 | { |
1834 | error_at (loc, "%<-gdwarf%s%> is ambiguous; " | |
1835 | "use %<-gdwarf-%s%> for DWARF version " | |
1836 | "or %<-gdwarf -g%s%> for debug level", arg, arg, arg); | |
1837 | break; | |
1838 | } | |
1839 | else | |
f0defe58 SKS |
1840 | value = opts->x_dwarf_version; |
1841 | ||
1842 | /* FALLTHRU */ | |
53b2323e | 1843 | case OPT_gdwarf_: |
b5b8b0ac | 1844 | if (value < 2 || value > 4) |
299404a1 | 1845 | error_at (loc, "dwarf version %d is not supported", value); |
53b2323e | 1846 | else |
a7d0d30f | 1847 | opts->x_dwarf_version = value; |
299404a1 | 1848 | set_debug_level (DWARF2_DEBUG, false, "", opts, opts_set, loc); |
df38ffef NB |
1849 | break; |
1850 | ||
99ea153e SA |
1851 | case OPT_gsplit_dwarf: |
1852 | set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, "", opts, opts_set, | |
1853 | loc); | |
1854 | break; | |
1855 | ||
df38ffef | 1856 | case OPT_ggdb: |
299404a1 | 1857 | set_debug_level (NO_DEBUG, 2, arg, opts, opts_set, loc); |
df38ffef NB |
1858 | break; |
1859 | ||
1860 | case OPT_gstabs: | |
1861 | case OPT_gstabs_: | |
299404a1 JM |
1862 | set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg, opts, opts_set, |
1863 | loc); | |
df38ffef NB |
1864 | break; |
1865 | ||
1866 | case OPT_gvms: | |
299404a1 | 1867 | set_debug_level (VMS_DEBUG, false, arg, opts, opts_set, loc); |
df38ffef NB |
1868 | break; |
1869 | ||
1870 | case OPT_gxcoff: | |
1871 | case OPT_gxcoff_: | |
299404a1 JM |
1872 | set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg, opts, opts_set, |
1873 | loc); | |
e01cc6dc NB |
1874 | break; |
1875 | ||
d185d268 | 1876 | case OPT_pedantic_errors: |
d5478783 | 1877 | dc->pedantic_errors = 1; |
9b095bf1 MLI |
1878 | control_warning_option (OPT_Wpedantic, DK_ERROR, value, |
1879 | loc, lang_mask, | |
1880 | handlers, opts, opts_set, | |
1881 | dc); | |
c04b6b38 RG |
1882 | break; |
1883 | ||
014d92e1 | 1884 | case OPT_flto: |
595c8dfa | 1885 | opts->x_flag_lto = value ? "" : NULL; |
e10909ce AK |
1886 | break; |
1887 | ||
5f0f4a3b | 1888 | case OPT_w: |
d5478783 | 1889 | dc->dc_inhibit_warnings = true; |
5f0f4a3b JM |
1890 | break; |
1891 | ||
3a789837 NF |
1892 | case OPT_fmax_errors_: |
1893 | dc->max_errors = value; | |
1894 | break; | |
1895 | ||
b352afba NC |
1896 | case OPT_fuse_ld_bfd: |
1897 | case OPT_fuse_ld_gold: | |
da18ea94 RAE |
1898 | case OPT_fuse_linker_plugin: |
1899 | /* No-op. Used by the driver and passed to us because it starts with f.*/ | |
1900 | break; | |
1901 | ||
955f5a07 JJ |
1902 | case OPT_fwrapv: |
1903 | if (value) | |
1904 | opts->x_flag_trapv = 0; | |
1905 | break; | |
1906 | ||
1907 | case OPT_ftrapv: | |
1908 | if (value) | |
1909 | opts->x_flag_wrapv = 0; | |
1910 | break; | |
1911 | ||
50431bc4 ZD |
1912 | default: |
1913 | /* If the flag was handled in a standard way, assume the lack of | |
1914 | processing here is intentional. */ | |
46625112 | 1915 | gcc_assert (option_flag_var (scode, opts)); |
0e61db61 | 1916 | break; |
d7b42618 NB |
1917 | } |
1918 | ||
7d5a5747 MLI |
1919 | common_handle_option_auto (opts, opts_set, decoded, lang_mask, kind, |
1920 | loc, handlers, dc); | |
5f20c657 | 1921 | return true; |
d7b42618 | 1922 | } |
903caebf NB |
1923 | |
1924 | /* Handle --param NAME=VALUE. */ | |
1925 | static void | |
48476d13 | 1926 | handle_param (struct gcc_options *opts, struct gcc_options *opts_set, |
299404a1 | 1927 | location_t loc, const char *carg) |
903caebf NB |
1928 | { |
1929 | char *equal, *arg; | |
1930 | int value; | |
1931 | ||
1932 | arg = xstrdup (carg); | |
1933 | equal = strchr (arg, '='); | |
1934 | if (!equal) | |
299404a1 JM |
1935 | error_at (loc, "%s: --param arguments should be of the form NAME=VALUE", |
1936 | arg); | |
903caebf NB |
1937 | else |
1938 | { | |
1939 | value = integral_argument (equal + 1); | |
1940 | if (value == -1) | |
299404a1 | 1941 | error_at (loc, "invalid --param value %qs", equal + 1); |
903caebf NB |
1942 | else |
1943 | { | |
1944 | *equal = '\0'; | |
48476d13 JM |
1945 | set_param_value (arg, value, |
1946 | opts->x_param_values, opts_set->x_param_values); | |
903caebf NB |
1947 | } |
1948 | } | |
1949 | ||
1950 | free (arg); | |
1951 | } | |
1952 | ||
d5478783 | 1953 | /* Used to set the level of strict aliasing warnings in OPTS, |
79bedddc SR |
1954 | when no level is specified (i.e., when -Wstrict-aliasing, and not |
1955 | -Wstrict-aliasing=level was given). | |
1956 | ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified, | |
1957 | and 0 otherwise. After calling this function, wstrict_aliasing will be | |
1958 | set to the default value of -Wstrict_aliasing=level, currently 3. */ | |
65d4f2cd | 1959 | static void |
d5478783 | 1960 | set_Wstrict_aliasing (struct gcc_options *opts, int onoff) |
79bedddc SR |
1961 | { |
1962 | gcc_assert (onoff == 0 || onoff == 1); | |
1963 | if (onoff != 0) | |
d5478783 | 1964 | opts->x_warn_strict_aliasing = 3; |
621b5ed6 | 1965 | else |
d5478783 | 1966 | opts->x_warn_strict_aliasing = 0; |
79bedddc SR |
1967 | } |
1968 | ||
058de654 NB |
1969 | /* The following routines are useful in setting all the flags that |
1970 | -ffast-math and -fno-fast-math imply. */ | |
7bb3487f | 1971 | static void |
d5478783 | 1972 | set_fast_math_flags (struct gcc_options *opts, int set) |
058de654 | 1973 | { |
5e46b0c6 ILT |
1974 | if (!opts->frontend_set_flag_unsafe_math_optimizations) |
1975 | { | |
1976 | opts->x_flag_unsafe_math_optimizations = set; | |
1977 | set_unsafe_math_optimizations_flags (opts, set); | |
1978 | } | |
1979 | if (!opts->frontend_set_flag_finite_math_only) | |
1980 | opts->x_flag_finite_math_only = set; | |
1981 | if (!opts->frontend_set_flag_errno_math) | |
1982 | opts->x_flag_errno_math = !set; | |
058de654 | 1983 | if (set) |
039c3d42 | 1984 | { |
5e46b0c6 ILT |
1985 | if (!opts->frontend_set_flag_signaling_nans) |
1986 | opts->x_flag_signaling_nans = 0; | |
1987 | if (!opts->frontend_set_flag_rounding_math) | |
1988 | opts->x_flag_rounding_math = 0; | |
1989 | if (!opts->frontend_set_flag_cx_limited_range) | |
1990 | opts->x_flag_cx_limited_range = 1; | |
039c3d42 | 1991 | } |
058de654 NB |
1992 | } |
1993 | ||
b8698a0f L |
1994 | /* When -funsafe-math-optimizations is set the following |
1995 | flags are set as well. */ | |
7bb3487f | 1996 | static void |
d5478783 | 1997 | set_unsafe_math_optimizations_flags (struct gcc_options *opts, int set) |
a1a82611 | 1998 | { |
5e46b0c6 ILT |
1999 | if (!opts->frontend_set_flag_trapping_math) |
2000 | opts->x_flag_trapping_math = !set; | |
2001 | if (!opts->frontend_set_flag_signed_zeros) | |
2002 | opts->x_flag_signed_zeros = !set; | |
2003 | if (!opts->frontend_set_flag_associative_math) | |
2004 | opts->x_flag_associative_math = set; | |
2005 | if (!opts->frontend_set_flag_reciprocal_math) | |
2006 | opts->x_flag_reciprocal_math = set; | |
a1a82611 RE |
2007 | } |
2008 | ||
0576d21f | 2009 | /* Return true iff flags in OPTS are set as if -ffast-math. */ |
058de654 | 2010 | bool |
0576d21f | 2011 | fast_math_flags_set_p (const struct gcc_options *opts) |
058de654 | 2012 | { |
0576d21f JM |
2013 | return (!opts->x_flag_trapping_math |
2014 | && opts->x_flag_unsafe_math_optimizations | |
2015 | && opts->x_flag_finite_math_only | |
2016 | && !opts->x_flag_signed_zeros | |
2017 | && !opts->x_flag_errno_math); | |
058de654 | 2018 | } |
cf03fd63 | 2019 | |
ab442df7 MM |
2020 | /* Return true iff flags are set as if -ffast-math but using the flags stored |
2021 | in the struct cl_optimization structure. */ | |
2022 | bool | |
2023 | fast_math_flags_struct_set_p (struct cl_optimization *opt) | |
2024 | { | |
e3339d0f JM |
2025 | return (!opt->x_flag_trapping_math |
2026 | && opt->x_flag_unsafe_math_optimizations | |
2027 | && opt->x_flag_finite_math_only | |
2028 | && !opt->x_flag_signed_zeros | |
2029 | && !opt->x_flag_errno_math); | |
ab442df7 MM |
2030 | } |
2031 | ||
0576d21f JM |
2032 | /* Handle a debug output -g switch for options OPTS |
2033 | (OPTS_SET->x_write_symbols storing whether a debug type was passed | |
299404a1 JM |
2034 | explicitly), location LOC. EXTENDED is true or false to support |
2035 | extended output (2 is special and means "-ggdb" was given). */ | |
df38ffef | 2036 | static void |
0576d21f | 2037 | set_debug_level (enum debug_info_type type, int extended, const char *arg, |
299404a1 JM |
2038 | struct gcc_options *opts, struct gcc_options *opts_set, |
2039 | location_t loc) | |
df38ffef | 2040 | { |
0576d21f | 2041 | opts->x_use_gnu_debug_info_extensions = extended; |
df38ffef NB |
2042 | |
2043 | if (type == NO_DEBUG) | |
2044 | { | |
0576d21f | 2045 | if (opts->x_write_symbols == NO_DEBUG) |
df38ffef | 2046 | { |
0576d21f | 2047 | opts->x_write_symbols = PREFERRED_DEBUGGING_TYPE; |
df38ffef NB |
2048 | |
2049 | if (extended == 2) | |
2050 | { | |
2051 | #ifdef DWARF2_DEBUGGING_INFO | |
0576d21f | 2052 | opts->x_write_symbols = DWARF2_DEBUG; |
df38ffef | 2053 | #elif defined DBX_DEBUGGING_INFO |
0576d21f | 2054 | opts->x_write_symbols = DBX_DEBUG; |
df38ffef NB |
2055 | #endif |
2056 | } | |
2057 | ||
0576d21f | 2058 | if (opts->x_write_symbols == NO_DEBUG) |
299404a1 | 2059 | warning_at (loc, 0, "target system does not support debug output"); |
df38ffef NB |
2060 | } |
2061 | } | |
2062 | else | |
2063 | { | |
2064 | /* Does it conflict with an already selected type? */ | |
0576d21f JM |
2065 | if (opts_set->x_write_symbols != NO_DEBUG |
2066 | && opts->x_write_symbols != NO_DEBUG | |
2067 | && type != opts->x_write_symbols) | |
299404a1 JM |
2068 | error_at (loc, "debug format \"%s\" conflicts with prior selection", |
2069 | debug_type_names[type]); | |
0576d21f JM |
2070 | opts->x_write_symbols = type; |
2071 | opts_set->x_write_symbols = type; | |
df38ffef NB |
2072 | } |
2073 | ||
2074 | /* A debug flag without a level defaults to level 2. */ | |
2075 | if (*arg == '\0') | |
2076 | { | |
0576d21f JM |
2077 | if (!opts->x_debug_info_level) |
2078 | opts->x_debug_info_level = DINFO_LEVEL_NORMAL; | |
df38ffef NB |
2079 | } |
2080 | else | |
2081 | { | |
32e8bb8e ILT |
2082 | int argval = integral_argument (arg); |
2083 | if (argval == -1) | |
299404a1 | 2084 | error_at (loc, "unrecognised debug output level \"%s\"", arg); |
32e8bb8e | 2085 | else if (argval > 3) |
299404a1 | 2086 | error_at (loc, "debug output level %s is too high", arg); |
32e8bb8e | 2087 | else |
0576d21f | 2088 | opts->x_debug_info_level = (enum debug_info_levels) argval; |
df38ffef NB |
2089 | } |
2090 | } | |
2091 | ||
299404a1 JM |
2092 | /* Arrange to dump core on error for diagnostic context DC. (The |
2093 | regular error message is still printed first, except in the case of | |
2094 | abort ().) */ | |
75685792 | 2095 | |
c98cd5bf | 2096 | static void |
299404a1 | 2097 | setup_core_dumping (diagnostic_context *dc) |
75685792 | 2098 | { |
c98cd5bf JM |
2099 | #ifdef SIGABRT |
2100 | signal (SIGABRT, SIG_DFL); | |
2101 | #endif | |
2102 | #if defined(HAVE_SETRLIMIT) | |
2103 | { | |
2104 | struct rlimit rlim; | |
2105 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
2106 | fatal_error ("getting core file size maximum limit: %m"); | |
2107 | rlim.rlim_cur = rlim.rlim_max; | |
2108 | if (setrlimit (RLIMIT_CORE, &rlim) != 0) | |
2109 | fatal_error ("setting core file size limit to maximum: %m"); | |
2110 | } | |
2111 | #endif | |
299404a1 | 2112 | diagnostic_abort_on_error (dc); |
75685792 | 2113 | } |
5c60a017 | 2114 | |
299404a1 JM |
2115 | /* Parse a -d<ARG> command line switch for OPTS, location LOC, |
2116 | diagnostic context DC. */ | |
5c60a017 | 2117 | |
c98cd5bf | 2118 | static void |
299404a1 JM |
2119 | decode_d_option (const char *arg, struct gcc_options *opts, |
2120 | location_t loc, diagnostic_context *dc) | |
5c60a017 | 2121 | { |
c98cd5bf | 2122 | int c; |
5c60a017 | 2123 | |
c98cd5bf JM |
2124 | while (*arg) |
2125 | switch (c = *arg++) | |
2126 | { | |
2127 | case 'A': | |
299404a1 | 2128 | opts->x_flag_debug_asm = 1; |
c98cd5bf JM |
2129 | break; |
2130 | case 'p': | |
299404a1 | 2131 | opts->x_flag_print_asm_name = 1; |
c98cd5bf JM |
2132 | break; |
2133 | case 'P': | |
299404a1 JM |
2134 | opts->x_flag_dump_rtl_in_asm = 1; |
2135 | opts->x_flag_print_asm_name = 1; | |
c98cd5bf | 2136 | break; |
c98cd5bf | 2137 | case 'x': |
299404a1 | 2138 | opts->x_rtl_dump_and_exit = 1; |
c98cd5bf JM |
2139 | break; |
2140 | case 'D': /* These are handled by the preprocessor. */ | |
2141 | case 'I': | |
2142 | case 'M': | |
2143 | case 'N': | |
2144 | case 'U': | |
2145 | break; | |
2146 | case 'H': | |
299404a1 | 2147 | setup_core_dumping (dc); |
c98cd5bf JM |
2148 | break; |
2149 | case 'a': | |
299404a1 | 2150 | opts->x_flag_dump_all_passed = true; |
c98cd5bf | 2151 | break; |
21bf1558 | 2152 | |
c98cd5bf | 2153 | default: |
299404a1 | 2154 | warning_at (loc, 0, "unrecognized gcc debugging option: %c", c); |
c98cd5bf JM |
2155 | break; |
2156 | } | |
5c60a017 | 2157 | } |
dc90f45b | 2158 | |
1ebe4b4f | 2159 | /* Enable (or disable if VALUE is 0) a warning option ARG (language |
c5fa0890 JM |
2160 | mask LANG_MASK, option handlers HANDLERS) as an error for option |
2161 | structures OPTS and OPTS_SET, diagnostic context DC (possibly | |
2162 | NULL), location LOC. This is used by -Werror=. */ | |
dc90f45b | 2163 | |
a4d8c676 | 2164 | static void |
5f20c657 | 2165 | enable_warning_as_error (const char *arg, int value, unsigned int lang_mask, |
1ebe4b4f | 2166 | const struct cl_option_handlers *handlers, |
c5fa0890 JM |
2167 | struct gcc_options *opts, |
2168 | struct gcc_options *opts_set, | |
a4d8c676 | 2169 | location_t loc, diagnostic_context *dc) |
dc90f45b MLI |
2170 | { |
2171 | char *new_option; | |
2172 | int option_index; | |
2173 | ||
2174 | new_option = XNEWVEC (char, strlen (arg) + 2); | |
2175 | new_option[0] = 'W'; | |
2176 | strcpy (new_option + 1, arg); | |
2177 | option_index = find_opt (new_option, lang_mask); | |
6e2f1956 | 2178 | if (option_index == OPT_SPECIAL_unknown) |
dc90f45b | 2179 | { |
299404a1 | 2180 | error_at (loc, "-Werror=%s: no option -%s", arg, new_option); |
dc90f45b MLI |
2181 | } |
2182 | else | |
2183 | { | |
87cf0651 SB |
2184 | const diagnostic_t kind = value ? DK_ERROR : DK_WARNING; |
2185 | ||
c5fa0890 JM |
2186 | control_warning_option (option_index, (int) kind, value, |
2187 | loc, lang_mask, | |
2188 | handlers, opts, opts_set, dc); | |
dc90f45b MLI |
2189 | } |
2190 | free (new_option); | |
2191 | } | |
5f0f4a3b JM |
2192 | |
2193 | /* Return malloced memory for the name of the option OPTION_INDEX | |
2194 | which enabled a diagnostic (context CONTEXT), originally of type | |
2195 | ORIG_DIAG_KIND but possibly converted to DIAG_KIND by options such | |
2196 | as -Werror. */ | |
2197 | ||
2198 | char * | |
2199 | option_name (diagnostic_context *context, int option_index, | |
2200 | diagnostic_t orig_diag_kind, diagnostic_t diag_kind) | |
2201 | { | |
2202 | if (option_index) | |
2203 | { | |
2204 | /* A warning classified as an error. */ | |
2205 | if ((orig_diag_kind == DK_WARNING || orig_diag_kind == DK_PEDWARN) | |
2206 | && diag_kind == DK_ERROR) | |
2207 | return concat (cl_options[OPT_Werror_].opt_text, | |
2208 | /* Skip over "-W". */ | |
2209 | cl_options[option_index].opt_text + 2, | |
2210 | NULL); | |
2211 | /* A warning with option. */ | |
2212 | else | |
2213 | return xstrdup (cl_options[option_index].opt_text); | |
2214 | } | |
2215 | /* A warning without option classified as an error. */ | |
2216 | else if (orig_diag_kind == DK_WARNING || orig_diag_kind == DK_PEDWARN | |
2217 | || diag_kind == DK_WARNING) | |
2218 | { | |
2219 | if (context->warning_as_error_requested) | |
2220 | return xstrdup (cl_options[OPT_Werror].opt_text); | |
2221 | else | |
2222 | return xstrdup (_("enabled by default")); | |
2223 | } | |
2224 | else | |
2225 | return NULL; | |
2226 | } |