]>
Commit | Line | Data |
---|---|---|
2772ef3e | 1 | /* Command line option handling. |
fa10beec | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
eeef0e45 | 3 | Free Software Foundation, Inc. |
2772ef3e NB |
4 | Contributed by Neil Booth. |
5 | ||
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 10 | Software Foundation; either version 3, or (at your option) any later |
2772ef3e NB |
11 | version. |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
2772ef3e NB |
21 | |
22 | #include "config.h" | |
23 | #include "system.h" | |
cf03fd63 | 24 | #include "intl.h" |
2772ef3e NB |
25 | #include "coretypes.h" |
26 | #include "tm.h" | |
27 | #include "tree.h" | |
058de654 | 28 | #include "rtl.h" |
b38f3813 | 29 | #include "expr.h" |
058de654 NB |
30 | #include "ggc.h" |
31 | #include "output.h" | |
2772ef3e NB |
32 | #include "langhooks.h" |
33 | #include "opts.h" | |
d7b42618 NB |
34 | #include "options.h" |
35 | #include "flags.h" | |
36 | #include "toplev.h" | |
903caebf | 37 | #include "params.h" |
de32c0cb | 38 | #include "diagnostic.h" |
9756310a | 39 | #include "tm_p.h" /* For OPTIMIZATION_OPTIONS. */ |
d6553b54 | 40 | #include "insn-attr.h" /* For INSN_SCHEDULING. */ |
221ee7c9 | 41 | #include "target.h" |
ef330312 | 42 | #include "tree-pass.h" |
6fb5fa3c | 43 | #include "dbgcnt.h" |
c8aea42c | 44 | #include "debug.h" |
2772ef3e | 45 | |
d185d268 NB |
46 | /* Value of the -G xx switch, and whether it was passed or not. */ |
47 | unsigned HOST_WIDE_INT g_switch_value; | |
48 | bool g_switch_set; | |
49 | ||
e855c69d AB |
50 | /* Same for selective scheduling. */ |
51 | bool sel_sched_switch_set; | |
52 | ||
d185d268 NB |
53 | /* True if we should exit after parsing options. */ |
54 | bool exit_after_options; | |
55 | ||
e01cc6dc NB |
56 | /* Print various extra warnings. -W/-Wextra. */ |
57 | bool extra_warnings; | |
58 | ||
e01cc6dc NB |
59 | /* True to warn about any objects definitions whose size is larger |
60 | than N bytes. Also want about function definitions whose returned | |
61 | values are larger than N bytes, where N is `larger_than_size'. */ | |
62 | bool warn_larger_than; | |
63 | HOST_WIDE_INT larger_than_size; | |
64 | ||
a214518f SP |
65 | /* True to warn about any function whose frame size is larger |
66 | * than N bytes. */ | |
67 | bool warn_frame_larger_than; | |
68 | HOST_WIDE_INT frame_larger_than_size; | |
69 | ||
df38ffef NB |
70 | /* Type(s) of debugging information we are producing (if any). See |
71 | flags.h for the definitions of the different possible types of | |
72 | debugging information. */ | |
73 | enum debug_info_type write_symbols = NO_DEBUG; | |
74 | ||
75 | /* Level of debugging information we are producing. See flags.h for | |
76 | the definitions of the different possible levels. */ | |
77 | enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; | |
78 | ||
39ef6592 LC |
79 | /* A major contribution to object and executable size is debug |
80 | information size. A major contribution to debug information size | |
81 | is struct descriptions replicated in several object files. The | |
82 | following flags attempt to reduce this information. The basic | |
83 | idea is to not emit struct debugging information in the current | |
84 | compilation unit when that information will be generated by | |
85 | another compilation unit. | |
86 | ||
87 | Debug information for a struct defined in the current source | |
88 | file should be generated in the object file. Likewise the | |
89 | debug information for a struct defined in a header should be | |
90 | generated in the object file of the corresponding source file. | |
91 | Both of these case are handled when the base name of the file of | |
92 | the struct definition matches the base name of the source file | |
cea618ac | 93 | of the current compilation unit. This matching emits minimal |
39ef6592 LC |
94 | struct debugging information. |
95 | ||
96 | The base file name matching rule above will fail to emit debug | |
97 | information for structs defined in system headers. So a second | |
98 | category of files includes system headers in addition to files | |
99 | with matching bases. | |
100 | ||
101 | The remaining types of files are library headers and application | |
102 | headers. We cannot currently distinguish these two types. */ | |
103 | ||
104 | enum debug_struct_file | |
105 | { | |
106 | DINFO_STRUCT_FILE_NONE, /* Debug no structs. */ | |
107 | DINFO_STRUCT_FILE_BASE, /* Debug structs defined in files with the | |
108 | same base name as the compilation unit. */ | |
109 | DINFO_STRUCT_FILE_SYS, /* Also debug structs defined in system | |
110 | header files. */ | |
111 | DINFO_STRUCT_FILE_ANY /* Debug structs defined in all files. */ | |
112 | }; | |
113 | ||
114 | /* Generic structs (e.g. templates not explicitly specialized) | |
115 | may not have a compilation unit associated with them, and so | |
116 | may need to be treated differently from ordinary structs. | |
117 | ||
118 | Structs only handled by reference (indirectly), will also usually | |
119 | not need as much debugging information. */ | |
120 | ||
121 | static enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS] | |
122 | = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY }; | |
123 | static enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS] | |
124 | = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY }; | |
125 | ||
126 | /* Parse the -femit-struct-debug-detailed option value | |
127 | and set the flag variables. */ | |
128 | ||
129 | #define MATCH( prefix, string ) \ | |
130 | ((strncmp (prefix, string, sizeof prefix - 1) == 0) \ | |
131 | ? ((string += sizeof prefix - 1), 1) : 0) | |
132 | ||
133 | void | |
134 | set_struct_debug_option (const char *spec) | |
135 | { | |
136 | /* various labels for comparison */ | |
137 | static char dfn_lbl[] = "dfn:", dir_lbl[] = "dir:", ind_lbl[] = "ind:"; | |
138 | static char ord_lbl[] = "ord:", gen_lbl[] = "gen:"; | |
139 | static char none_lbl[] = "none", any_lbl[] = "any"; | |
140 | static char base_lbl[] = "base", sys_lbl[] = "sys"; | |
141 | ||
142 | enum debug_struct_file files = DINFO_STRUCT_FILE_ANY; | |
143 | /* Default is to apply to as much as possible. */ | |
144 | enum debug_info_usage usage = DINFO_USAGE_NUM_ENUMS; | |
145 | int ord = 1, gen = 1; | |
146 | ||
147 | /* What usage? */ | |
148 | if (MATCH (dfn_lbl, spec)) | |
149 | usage = DINFO_USAGE_DFN; | |
150 | else if (MATCH (dir_lbl, spec)) | |
151 | usage = DINFO_USAGE_DIR_USE; | |
152 | else if (MATCH (ind_lbl, spec)) | |
153 | usage = DINFO_USAGE_IND_USE; | |
154 | ||
155 | /* Generics or not? */ | |
156 | if (MATCH (ord_lbl, spec)) | |
157 | gen = 0; | |
158 | else if (MATCH (gen_lbl, spec)) | |
159 | ord = 0; | |
160 | ||
161 | /* What allowable environment? */ | |
162 | if (MATCH (none_lbl, spec)) | |
163 | files = DINFO_STRUCT_FILE_NONE; | |
164 | else if (MATCH (any_lbl, spec)) | |
165 | files = DINFO_STRUCT_FILE_ANY; | |
166 | else if (MATCH (sys_lbl, spec)) | |
167 | files = DINFO_STRUCT_FILE_SYS; | |
168 | else if (MATCH (base_lbl, spec)) | |
169 | files = DINFO_STRUCT_FILE_BASE; | |
170 | else | |
171 | error ("argument %qs to %<-femit-struct-debug-detailed%> not recognized", | |
172 | spec); | |
173 | ||
174 | /* Effect the specification. */ | |
175 | if (usage == DINFO_USAGE_NUM_ENUMS) | |
176 | { | |
177 | if (ord) | |
178 | { | |
179 | debug_struct_ordinary[DINFO_USAGE_DFN] = files; | |
180 | debug_struct_ordinary[DINFO_USAGE_DIR_USE] = files; | |
181 | debug_struct_ordinary[DINFO_USAGE_IND_USE] = files; | |
182 | } | |
183 | if (gen) | |
184 | { | |
185 | debug_struct_generic[DINFO_USAGE_DFN] = files; | |
186 | debug_struct_generic[DINFO_USAGE_DIR_USE] = files; | |
187 | debug_struct_generic[DINFO_USAGE_IND_USE] = files; | |
188 | } | |
189 | } | |
190 | else | |
191 | { | |
192 | if (ord) | |
193 | debug_struct_ordinary[usage] = files; | |
194 | if (gen) | |
195 | debug_struct_generic[usage] = files; | |
196 | } | |
197 | ||
198 | if (*spec == ',') | |
199 | set_struct_debug_option (spec+1); | |
200 | else | |
201 | { | |
202 | /* No more -femit-struct-debug-detailed specifications. | |
203 | Do final checks. */ | |
204 | if (*spec != '\0') | |
205 | error ("argument %qs to %<-femit-struct-debug-detailed%> unknown", | |
206 | spec); | |
207 | if (debug_struct_ordinary[DINFO_USAGE_DIR_USE] | |
208 | < debug_struct_ordinary[DINFO_USAGE_IND_USE] | |
209 | || debug_struct_generic[DINFO_USAGE_DIR_USE] | |
210 | < debug_struct_generic[DINFO_USAGE_IND_USE]) | |
211 | error ("%<-femit-struct-debug-detailed=dir:...%> must allow at least" | |
212 | " as much as %<-femit-struct-debug-detailed=ind:...%>"); | |
213 | } | |
214 | } | |
215 | ||
216 | /* Find the base name of a path, stripping off both directories and | |
217 | a single final extension. */ | |
218 | static int | |
219 | base_of_path (const char *path, const char **base_out) | |
220 | { | |
221 | const char *base = path; | |
222 | const char *dot = 0; | |
223 | const char *p = path; | |
224 | char c = *p; | |
225 | while (c) | |
226 | { | |
227 | if (IS_DIR_SEPARATOR(c)) | |
228 | { | |
229 | base = p + 1; | |
230 | dot = 0; | |
231 | } | |
232 | else if (c == '.') | |
233 | dot = p; | |
234 | c = *++p; | |
235 | } | |
236 | if (!dot) | |
237 | dot = p; | |
238 | *base_out = base; | |
239 | return dot - base; | |
240 | } | |
241 | ||
242 | /* Match the base name of a file to the base name of a compilation unit. */ | |
243 | ||
244 | static const char *main_input_basename; | |
245 | static int main_input_baselength; | |
246 | ||
247 | static int | |
248 | matches_main_base (const char *path) | |
249 | { | |
250 | /* Cache the last query. */ | |
251 | static const char *last_path = NULL; | |
252 | static int last_match = 0; | |
253 | if (path != last_path) | |
254 | { | |
255 | const char *base; | |
256 | int length = base_of_path (path, &base); | |
257 | last_path = path; | |
258 | last_match = (length == main_input_baselength | |
259 | && memcmp (base, main_input_basename, length) == 0); | |
260 | } | |
261 | return last_match; | |
262 | } | |
263 | ||
264 | #ifdef DEBUG_DEBUG_STRUCT | |
265 | ||
266 | static int | |
267 | dump_struct_debug (tree type, enum debug_info_usage usage, | |
268 | enum debug_struct_file criterion, int generic, | |
269 | int matches, int result) | |
270 | { | |
271 | /* Find the type name. */ | |
272 | tree type_decl = TYPE_STUB_DECL (type); | |
273 | tree t = type_decl; | |
274 | const char *name = 0; | |
275 | if (TREE_CODE (t) == TYPE_DECL) | |
276 | t = DECL_NAME (t); | |
277 | if (t) | |
278 | name = IDENTIFIER_POINTER (t); | |
279 | ||
280 | fprintf (stderr, " struct %d %s %s %s %s %d %p %s\n", | |
281 | criterion, | |
282 | DECL_IN_SYSTEM_HEADER (type_decl) ? "sys" : "usr", | |
283 | matches ? "bas" : "hdr", | |
284 | generic ? "gen" : "ord", | |
285 | usage == DINFO_USAGE_DFN ? ";" : | |
286 | usage == DINFO_USAGE_DIR_USE ? "." : "*", | |
287 | result, | |
288 | (void*) type_decl, name); | |
289 | return result; | |
290 | } | |
291 | #define DUMP_GSTRUCT(type, usage, criterion, generic, matches, result) \ | |
292 | dump_struct_debug (type, usage, criterion, generic, matches, result) | |
293 | ||
294 | #else | |
295 | ||
296 | #define DUMP_GSTRUCT(type, usage, criterion, generic, matches, result) \ | |
297 | (result) | |
298 | ||
299 | #endif | |
300 | ||
301 | ||
302 | bool | |
303 | should_emit_struct_debug (tree type, enum debug_info_usage usage) | |
304 | { | |
305 | enum debug_struct_file criterion; | |
306 | tree type_decl; | |
307 | bool generic = lang_hooks.types.generic_p (type); | |
308 | ||
309 | if (generic) | |
310 | criterion = debug_struct_generic[usage]; | |
311 | else | |
312 | criterion = debug_struct_ordinary[usage]; | |
313 | ||
314 | if (criterion == DINFO_STRUCT_FILE_NONE) | |
315 | return DUMP_GSTRUCT (type, usage, criterion, generic, false, false); | |
316 | if (criterion == DINFO_STRUCT_FILE_ANY) | |
317 | return DUMP_GSTRUCT (type, usage, criterion, generic, false, true); | |
318 | ||
319 | type_decl = TYPE_STUB_DECL (type); | |
320 | ||
321 | if (criterion == DINFO_STRUCT_FILE_SYS && DECL_IN_SYSTEM_HEADER (type_decl)) | |
322 | return DUMP_GSTRUCT (type, usage, criterion, generic, false, true); | |
323 | ||
324 | if (matches_main_base (DECL_SOURCE_FILE (type_decl))) | |
325 | return DUMP_GSTRUCT (type, usage, criterion, generic, true, true); | |
326 | return DUMP_GSTRUCT (type, usage, criterion, generic, false, false); | |
327 | } | |
328 | ||
df38ffef NB |
329 | /* Nonzero means use GNU-only extensions in the generated symbolic |
330 | debugging information. Currently, this only has an effect when | |
331 | write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ | |
332 | bool use_gnu_debug_info_extensions; | |
333 | ||
d7afec4b ND |
334 | /* The default visibility for all symbols (unless overridden) */ |
335 | enum symbol_visibility default_visibility = VISIBILITY_DEFAULT; | |
336 | ||
337 | /* Global visibility options. */ | |
338 | struct visibility_flags visibility_options; | |
339 | ||
2cc98056 | 340 | /* What to print when a switch has no documentation. */ |
b3eaaf1a | 341 | #ifdef ENABLE_CHECKING |
2cc98056 | 342 | static const char undocumented_msg[] = N_("This switch lacks documentation"); |
b3eaaf1a NC |
343 | #else |
344 | static const char undocumented_msg[] = ""; | |
345 | #endif | |
2cc98056 | 346 | |
a8a5f53a JH |
347 | /* Used for bookkeeping on whether user set these flags so |
348 | -fprofile-use/-fprofile-generate does not use them. */ | |
349 | static bool profile_arc_flag_set, flag_profile_values_set; | |
350 | static bool flag_unroll_loops_set, flag_tracer_set; | |
351 | static bool flag_value_profile_transformations_set; | |
352 | static bool flag_peel_loops_set, flag_branch_probabilities_set; | |
ca30a539 | 353 | static bool flag_inline_functions_set, flag_ipa_cp_set, flag_ipa_cp_clone_set; |
8bcf15f6 | 354 | static bool flag_predictive_commoning_set, flag_unswitch_loops_set, flag_gcse_after_reload_set; |
a8a5f53a | 355 | |
8d5a7d1f ILT |
356 | /* Functions excluded from profiling. */ |
357 | ||
358 | typedef char *char_p; /* For DEF_VEC_P. */ | |
359 | DEF_VEC_P(char_p); | |
360 | DEF_VEC_ALLOC_P(char_p,heap); | |
361 | ||
362 | static VEC(char_p,heap) *flag_instrument_functions_exclude_functions; | |
363 | static VEC(char_p,heap) *flag_instrument_functions_exclude_files; | |
364 | ||
369dcbd9 MLI |
365 | typedef const char *const_char_p; /* For DEF_VEC_P. */ |
366 | DEF_VEC_P(const_char_p); | |
367 | DEF_VEC_ALLOC_P(const_char_p,heap); | |
368 | ||
369 | static VEC(const_char_p,heap) *ignored_options; | |
370 | ||
1ebc7e68 RA |
371 | /* Function calls disallowed under -Wdisallowed-function-list=... */ |
372 | static VEC(char_p,heap) *warning_disallowed_functions; | |
373 | ||
374 | /* If -Wdisallowed-function-list=... */ | |
375 | bool warn_disallowed_functions = false; | |
376 | ||
59e4e217 | 377 | /* Input file names. */ |
40e941af PB |
378 | const char **in_fnames; |
379 | unsigned num_in_fnames; | |
380 | ||
79cf5994 DD |
381 | static int common_handle_option (size_t scode, const char *arg, int value, |
382 | unsigned int lang_mask); | |
903caebf NB |
383 | static void handle_param (const char *); |
384 | static void set_Wextra (int); | |
b86f6cd9 | 385 | static unsigned int handle_option (const char **argv, unsigned int lang_mask); |
f18754d6 NB |
386 | static char *write_langs (unsigned int lang_mask); |
387 | static void complain_wrong_lang (const char *, const struct cl_option *, | |
388 | unsigned int lang_mask); | |
b86f6cd9 | 389 | static void handle_options (unsigned int, const char **, unsigned int); |
df38ffef NB |
390 | static void set_debug_level (enum debug_info_type type, int extended, |
391 | const char *arg); | |
2772ef3e | 392 | |
e01cc6dc | 393 | /* If ARG is a non-negative integer made up solely of digits, return its |
7b086b11 NB |
394 | value, otherwise return -1. */ |
395 | static int | |
396 | integral_argument (const char *arg) | |
397 | { | |
398 | const char *p = arg; | |
399 | ||
400 | while (*p && ISDIGIT (*p)) | |
401 | p++; | |
402 | ||
403 | if (*p == '\0') | |
404 | return atoi (arg); | |
405 | ||
406 | return -1; | |
407 | } | |
408 | ||
f18754d6 NB |
409 | /* Return a malloced slash-separated list of languages in MASK. */ |
410 | static char * | |
411 | write_langs (unsigned int mask) | |
412 | { | |
413 | unsigned int n = 0, len = 0; | |
414 | const char *lang_name; | |
415 | char *result; | |
416 | ||
417 | for (n = 0; (lang_name = lang_names[n]) != 0; n++) | |
418 | if (mask & (1U << n)) | |
419 | len += strlen (lang_name) + 1; | |
420 | ||
5ed6ace5 | 421 | result = XNEWVEC (char, len); |
f18754d6 NB |
422 | len = 0; |
423 | for (n = 0; (lang_name = lang_names[n]) != 0; n++) | |
424 | if (mask & (1U << n)) | |
425 | { | |
426 | if (len) | |
427 | result[len++] = '/'; | |
428 | strcpy (result + len, lang_name); | |
429 | len += strlen (lang_name); | |
430 | } | |
431 | ||
432 | result[len] = 0; | |
433 | ||
434 | return result; | |
435 | } | |
436 | ||
437 | /* Complain that switch OPT_INDEX does not apply to this front end. */ | |
438 | static void | |
439 | complain_wrong_lang (const char *text, const struct cl_option *option, | |
440 | unsigned int lang_mask) | |
441 | { | |
442 | char *ok_langs, *bad_lang; | |
443 | ||
444 | ok_langs = write_langs (option->flags); | |
445 | bad_lang = write_langs (lang_mask); | |
446 | ||
447 | /* Eventually this should become a hard error IMO. */ | |
d4ee4d25 | 448 | warning (0, "command line option \"%s\" is valid for %s but not for %s", |
f18754d6 NB |
449 | text, ok_langs, bad_lang); |
450 | ||
451 | free (ok_langs); | |
452 | free (bad_lang); | |
453 | } | |
454 | ||
369dcbd9 MLI |
455 | /* Buffer the unknown option described by the string OPT. Currently, |
456 | we only complain about unknown -Wno-* options if they may have | |
15e1dac0 PM |
457 | prevented a diagnostic. Otherwise, we just ignore them. |
458 | Note that if we do complain, it is only as a warning, not an error; | |
459 | passing the compiler an unrecognised -Wno-* option should never | |
460 | change whether the compilation succeeds or fails. */ | |
369dcbd9 | 461 | |
15e1dac0 | 462 | static void postpone_unknown_option_warning(const char *opt) |
369dcbd9 MLI |
463 | { |
464 | VEC_safe_push (const_char_p, heap, ignored_options, opt); | |
465 | } | |
466 | ||
15e1dac0 | 467 | /* Produce a warning for each option previously buffered. */ |
369dcbd9 MLI |
468 | |
469 | void print_ignored_options (void) | |
470 | { | |
471 | location_t saved_loc = input_location; | |
472 | ||
473 | input_location = 0; | |
474 | ||
475 | while (!VEC_empty (const_char_p, ignored_options)) | |
476 | { | |
477 | const char *opt; | |
478 | opt = VEC_pop (const_char_p, ignored_options); | |
15e1dac0 | 479 | warning (0, "unrecognized command line option \"%s\"", opt); |
369dcbd9 MLI |
480 | } |
481 | ||
482 | input_location = saved_loc; | |
483 | } | |
484 | ||
f18754d6 NB |
485 | /* Handle the switch beginning at ARGV for the language indicated by |
486 | LANG_MASK. Returns the number of switches consumed. */ | |
487 | static unsigned int | |
b86f6cd9 | 488 | handle_option (const char **argv, unsigned int lang_mask) |
2772ef3e NB |
489 | { |
490 | size_t opt_index; | |
491 | const char *opt, *arg = 0; | |
492 | char *dup = 0; | |
7b086b11 | 493 | int value = 1; |
f18754d6 | 494 | unsigned int result = 0; |
2772ef3e NB |
495 | const struct cl_option *option; |
496 | ||
2772ef3e NB |
497 | opt = argv[0]; |
498 | ||
75685792 RS |
499 | opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); |
500 | if (opt_index == cl_options_count | |
501 | && (opt[1] == 'W' || opt[1] == 'f' || opt[1] == 'm') | |
cb66e385 | 502 | && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-') |
2772ef3e | 503 | { |
75685792 | 504 | /* Drop the "no-" from negative switches. */ |
cb66e385 NB |
505 | size_t len = strlen (opt) - 3; |
506 | ||
5ed6ace5 | 507 | dup = XNEWVEC (char, len + 1); |
cb66e385 NB |
508 | dup[0] = '-'; |
509 | dup[1] = opt[1]; | |
510 | memcpy (dup + 2, opt + 5, len - 2 + 1); | |
511 | opt = dup; | |
512 | value = 0; | |
75685792 | 513 | opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); |
ee8ea087 | 514 | if (opt_index == cl_options_count && opt[1] == 'W') |
369dcbd9 | 515 | { |
15e1dac0 | 516 | /* We don't generate warnings for unknown -Wno-* options |
369dcbd9 | 517 | unless we issue diagnostics. */ |
15e1dac0 | 518 | postpone_unknown_option_warning (argv[0]); |
369dcbd9 MLI |
519 | result = 1; |
520 | goto done; | |
521 | } | |
2772ef3e | 522 | } |
2772ef3e | 523 | |
cb66e385 | 524 | if (opt_index == cl_options_count) |
bacf5b96 | 525 | goto done; |
2772ef3e | 526 | |
cb66e385 | 527 | option = &cl_options[opt_index]; |
2772ef3e | 528 | |
cb66e385 NB |
529 | /* Reject negative form of switches that don't take negatives as |
530 | unrecognized. */ | |
531 | if (!value && (option->flags & CL_REJECT_NEGATIVE)) | |
532 | goto done; | |
2772ef3e | 533 | |
cb66e385 NB |
534 | /* We've recognized this switch. */ |
535 | result = 1; | |
2772ef3e | 536 | |
aeb70e78 RS |
537 | /* Check to see if the option is disabled for this configuration. */ |
538 | if (option->flags & CL_DISABLED) | |
539 | { | |
540 | error ("command line option %qs" | |
541 | " is not supported by this configuration", opt); | |
542 | goto done; | |
543 | } | |
544 | ||
cb66e385 NB |
545 | /* Sort out any argument the switch takes. */ |
546 | if (option->flags & CL_JOINED) | |
547 | { | |
548 | /* Have arg point to the original switch. This is because | |
549 | some code, such as disable_builtin_function, expects its | |
550 | argument to be persistent until the program exits. */ | |
551 | arg = argv[0] + cl_options[opt_index].opt_len + 1; | |
552 | if (!value) | |
553 | arg += strlen ("no-"); | |
554 | ||
555 | if (*arg == '\0' && !(option->flags & CL_MISSING_OK)) | |
2772ef3e | 556 | { |
cb66e385 | 557 | if (option->flags & CL_SEPARATE) |
2772ef3e | 558 | { |
cb66e385 NB |
559 | arg = argv[1]; |
560 | result = 2; | |
2772ef3e | 561 | } |
cb66e385 NB |
562 | else |
563 | /* Missing argument. */ | |
564 | arg = NULL; | |
7b086b11 | 565 | } |
cb66e385 NB |
566 | } |
567 | else if (option->flags & CL_SEPARATE) | |
568 | { | |
569 | arg = argv[1]; | |
570 | result = 2; | |
571 | } | |
2772ef3e | 572 | |
cb66e385 NB |
573 | /* Now we've swallowed any potential argument, complain if this |
574 | is a switch for a different front end. */ | |
75685792 | 575 | if (!(option->flags & (lang_mask | CL_COMMON | CL_TARGET))) |
cb66e385 NB |
576 | { |
577 | complain_wrong_lang (argv[0], option, lang_mask); | |
578 | goto done; | |
579 | } | |
1f1d5130 MS |
580 | else if ((option->flags & CL_TARGET) |
581 | && (option->flags & CL_LANG_ALL) | |
582 | && !(option->flags & lang_mask)) | |
583 | { | |
584 | /* Complain for target flag language mismatches if any languages | |
585 | are specified. */ | |
586 | complain_wrong_lang (argv[0], option, lang_mask); | |
587 | goto done; | |
588 | } | |
f18754d6 | 589 | |
cb66e385 NB |
590 | if (arg == NULL && (option->flags & (CL_JOINED | CL_SEPARATE))) |
591 | { | |
ae2bcd98 | 592 | if (!lang_hooks.missing_argument (opt, opt_index)) |
cb66e385 NB |
593 | error ("missing argument to \"%s\"", opt); |
594 | goto done; | |
595 | } | |
9eee5e72 | 596 | |
cb66e385 NB |
597 | /* If the switch takes an integer, convert it. */ |
598 | if (arg && (option->flags & CL_UINTEGER)) | |
599 | { | |
600 | value = integral_argument (arg); | |
601 | if (value == -1) | |
7b086b11 | 602 | { |
cf03fd63 | 603 | error ("argument to \"%s\" should be a non-negative integer", |
cb66e385 NB |
604 | option->opt_text); |
605 | goto done; | |
2772ef3e | 606 | } |
cb66e385 | 607 | } |
2772ef3e | 608 | |
50431bc4 | 609 | if (option->flag_var) |
55bea00a | 610 | switch (option->var_type) |
75685792 RS |
611 | { |
612 | case CLVC_BOOLEAN: | |
55bea00a | 613 | *(int *) option->flag_var = value; |
75685792 RS |
614 | break; |
615 | ||
616 | case CLVC_EQUAL: | |
55bea00a RS |
617 | *(int *) option->flag_var = (value |
618 | ? option->var_value | |
619 | : !option->var_value); | |
75685792 RS |
620 | break; |
621 | ||
622 | case CLVC_BIT_CLEAR: | |
623 | case CLVC_BIT_SET: | |
55bea00a RS |
624 | if ((value != 0) == (option->var_type == CLVC_BIT_SET)) |
625 | *(int *) option->flag_var |= option->var_value; | |
75685792 | 626 | else |
55bea00a | 627 | *(int *) option->flag_var &= ~option->var_value; |
75685792 RS |
628 | if (option->flag_var == &target_flags) |
629 | target_flags_explicit |= option->var_value; | |
630 | break; | |
55bea00a RS |
631 | |
632 | case CLVC_STRING: | |
633 | *(const char **) option->flag_var = arg; | |
634 | break; | |
75685792 | 635 | } |
c662432e | 636 | |
cb66e385 | 637 | if (option->flags & lang_mask) |
ae2bcd98 | 638 | if (lang_hooks.handle_option (opt_index, arg, value) == 0) |
cb66e385 | 639 | result = 0; |
d7b42618 | 640 | |
cb66e385 | 641 | if (result && (option->flags & CL_COMMON)) |
79cf5994 | 642 | if (common_handle_option (opt_index, arg, value, lang_mask) == 0) |
cb66e385 | 643 | result = 0; |
2772ef3e | 644 | |
75685792 RS |
645 | if (result && (option->flags & CL_TARGET)) |
646 | if (!targetm.handle_option (opt_index, arg, value)) | |
647 | result = 0; | |
648 | ||
2772ef3e NB |
649 | done: |
650 | if (dup) | |
651 | free (dup); | |
652 | return result; | |
653 | } | |
d7b42618 | 654 | |
2715d4a3 BE |
655 | /* Handle FILENAME from the command line. */ |
656 | static void | |
657 | add_input_filename (const char *filename) | |
658 | { | |
659 | num_in_fnames++; | |
d3bfe4de | 660 | in_fnames = XRESIZEVEC (const char *, in_fnames, num_in_fnames); |
2715d4a3 BE |
661 | in_fnames[num_in_fnames - 1] = filename; |
662 | } | |
663 | ||
1ebc7e68 | 664 | /* Add comma-separated strings to a char_p vector. */ |
8d5a7d1f ILT |
665 | |
666 | static void | |
1ebc7e68 | 667 | add_comma_separated_to_vector (VEC(char_p,heap) **pvec, const char* arg) |
8d5a7d1f ILT |
668 | { |
669 | char *tmp; | |
670 | char *r; | |
671 | char *w; | |
672 | char *token_start; | |
673 | ||
674 | /* We never free this string. */ | |
675 | tmp = xstrdup (arg); | |
676 | ||
677 | r = tmp; | |
678 | w = tmp; | |
679 | token_start = tmp; | |
680 | ||
681 | while (*r != '\0') | |
682 | { | |
683 | if (*r == ',') | |
684 | { | |
685 | *w++ = '\0'; | |
686 | ++r; | |
687 | VEC_safe_push (char_p, heap, *pvec, token_start); | |
688 | token_start = w; | |
689 | } | |
690 | if (*r == '\\' && r[1] == ',') | |
691 | { | |
692 | *w++ = ','; | |
693 | r += 2; | |
694 | } | |
695 | else | |
696 | *w++ = *r++; | |
697 | } | |
698 | if (*token_start != '\0') | |
699 | VEC_safe_push (char_p, heap, *pvec, token_start); | |
700 | } | |
701 | ||
702 | /* Return whether we should exclude FNDECL from instrumentation. */ | |
703 | ||
704 | bool | |
705 | flag_instrument_functions_exclude_p (tree fndecl) | |
706 | { | |
707 | if (VEC_length (char_p, flag_instrument_functions_exclude_functions) > 0) | |
708 | { | |
709 | const char *name; | |
710 | int i; | |
711 | char *s; | |
712 | ||
713 | name = lang_hooks.decl_printable_name (fndecl, 0); | |
714 | for (i = 0; | |
715 | VEC_iterate (char_p, flag_instrument_functions_exclude_functions, | |
716 | i, s); | |
717 | ++i) | |
718 | { | |
719 | if (strstr (name, s) != NULL) | |
720 | return true; | |
721 | } | |
722 | } | |
723 | ||
724 | if (VEC_length (char_p, flag_instrument_functions_exclude_files) > 0) | |
725 | { | |
726 | const char *name; | |
727 | int i; | |
728 | char *s; | |
729 | ||
730 | name = DECL_SOURCE_FILE (fndecl); | |
731 | for (i = 0; | |
732 | VEC_iterate (char_p, flag_instrument_functions_exclude_files, i, s); | |
733 | ++i) | |
734 | { | |
735 | if (strstr (name, s) != NULL) | |
736 | return true; | |
737 | } | |
738 | } | |
739 | ||
740 | return false; | |
741 | } | |
742 | ||
1ebc7e68 RA |
743 | |
744 | /* Return whether this function call is disallowed. */ | |
745 | void | |
746 | warn_if_disallowed_function_p (const_tree exp) | |
747 | { | |
748 | if (TREE_CODE(exp) == CALL_EXPR | |
749 | && VEC_length (char_p, warning_disallowed_functions) > 0) | |
750 | { | |
751 | int i; | |
752 | char *s; | |
753 | const char *fnname = | |
754 | IDENTIFIER_POINTER (DECL_NAME (get_callee_fndecl (exp))); | |
755 | for (i = 0; VEC_iterate (char_p, warning_disallowed_functions, i, s); | |
756 | ++i) | |
757 | { | |
758 | if (strcmp (fnname, s) == 0) | |
759 | { | |
760 | warning (OPT_Wdisallowed_function_list_, | |
761 | "disallowed call to %qs", fnname); | |
762 | break; | |
763 | } | |
764 | } | |
765 | } | |
766 | } | |
767 | ||
f18754d6 NB |
768 | /* Decode and handle the vector of command line options. LANG_MASK |
769 | contains has a single bit set representing the current | |
770 | language. */ | |
9756310a | 771 | static void |
b86f6cd9 | 772 | handle_options (unsigned int argc, const char **argv, unsigned int lang_mask) |
f18754d6 NB |
773 | { |
774 | unsigned int n, i; | |
775 | ||
776 | for (i = 1; i < argc; i += n) | |
777 | { | |
cb66e385 NB |
778 | const char *opt = argv[i]; |
779 | ||
780 | /* Interpret "-" or a non-switch as a file name. */ | |
781 | if (opt[0] != '-' || opt[1] == '\0') | |
782 | { | |
8e9ea4d7 | 783 | if (main_input_filename == NULL) |
39ef6592 | 784 | { |
b3eaaf1a | 785 | main_input_filename = opt; |
39ef6592 LC |
786 | main_input_baselength |
787 | = base_of_path (main_input_filename, &main_input_basename); | |
788 | } | |
40e941af | 789 | add_input_filename (opt); |
cb66e385 NB |
790 | n = 1; |
791 | continue; | |
792 | } | |
793 | ||
f18754d6 NB |
794 | n = handle_option (argv + i, lang_mask); |
795 | ||
796 | if (!n) | |
797 | { | |
798 | n = 1; | |
cb66e385 | 799 | error ("unrecognized command line option \"%s\"", opt); |
f18754d6 NB |
800 | } |
801 | } | |
802 | } | |
803 | ||
9756310a NB |
804 | /* Parse command line options and set default flag values. Do minimal |
805 | options processing. */ | |
806 | void | |
b86f6cd9 | 807 | decode_options (unsigned int argc, const char **argv) |
9756310a | 808 | { |
ab442df7 MM |
809 | static bool first_time_p = true; |
810 | static int initial_max_aliased_vops; | |
811 | static int initial_avg_aliased_vops; | |
812 | static int initial_min_crossjump_insns; | |
813 | static int initial_max_fields_for_field_sensitive; | |
814 | static unsigned int initial_lang_mask; | |
9756310a | 815 | |
ab442df7 MM |
816 | unsigned int i, lang_mask; |
817 | int opt1; | |
818 | int opt2; | |
819 | int opt3; | |
820 | int opt1_max; | |
9756310a | 821 | |
ab442df7 MM |
822 | if (first_time_p) |
823 | { | |
824 | /* Perform language-specific options initialization. */ | |
825 | initial_lang_mask = lang_mask = lang_hooks.init_options (argc, argv); | |
826 | ||
827 | lang_hooks.initialize_diagnostics (global_dc); | |
828 | ||
829 | /* Save initial values of parameters we reset. */ | |
830 | initial_max_aliased_vops = MAX_ALIASED_VOPS; | |
831 | initial_avg_aliased_vops = AVG_ALIASED_VOPS; | |
832 | initial_min_crossjump_insns | |
833 | = compiler_params[PARAM_MIN_CROSSJUMP_INSNS].value; | |
834 | initial_max_fields_for_field_sensitive | |
835 | = compiler_params[PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE].value; | |
836 | } | |
837 | else | |
838 | lang_mask = initial_lang_mask; | |
21ecc5a7 | 839 | |
9756310a NB |
840 | /* Scan to see what optimization level has been specified. That will |
841 | determine the default value of many flags. */ | |
842 | for (i = 1; i < argc; i++) | |
843 | { | |
844 | if (!strcmp (argv[i], "-O")) | |
845 | { | |
846 | optimize = 1; | |
847 | optimize_size = 0; | |
848 | } | |
849 | else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
850 | { | |
851 | /* Handle -Os, -O2, -O3, -O69, ... */ | |
b86f6cd9 | 852 | const char *p = &argv[i][2]; |
9756310a NB |
853 | |
854 | if ((p[0] == 's') && (p[1] == 0)) | |
855 | { | |
856 | optimize_size = 1; | |
857 | ||
858 | /* Optimizing for size forces optimize to be 2. */ | |
859 | optimize = 2; | |
860 | } | |
861 | else | |
862 | { | |
863 | const int optimize_val = read_integral_parameter (p, p - 2, -1); | |
864 | if (optimize_val != -1) | |
865 | { | |
866 | optimize = optimize_val; | |
867 | optimize_size = 0; | |
868 | } | |
869 | } | |
870 | } | |
871 | } | |
7e8b322a | 872 | |
058e97ec VM |
873 | #ifdef IRA_COVER_CLASSES |
874 | /* Use IRA if it is implemented for the target. */ | |
875 | flag_ira = 1; | |
876 | #endif | |
877 | ||
ab442df7 MM |
878 | /* -O1 optimizations. */ |
879 | opt1 = (optimize >= 1); | |
880 | flag_defer_pop = opt1; | |
9756310a | 881 | #ifdef DELAY_SLOTS |
ab442df7 | 882 | flag_delayed_branch = opt1; |
9756310a NB |
883 | #endif |
884 | #ifdef CAN_DEBUG_WITHOUT_FP | |
ab442df7 | 885 | flag_omit_frame_pointer = opt1; |
9756310a | 886 | #endif |
ab442df7 MM |
887 | flag_guess_branch_prob = opt1; |
888 | flag_cprop_registers = opt1; | |
889 | flag_if_conversion = opt1; | |
890 | flag_if_conversion2 = opt1; | |
891 | flag_ipa_pure_const = opt1; | |
892 | flag_ipa_reference = opt1; | |
57b08d04 | 893 | flag_merge_constants = opt1; |
ab442df7 MM |
894 | flag_split_wide_types = opt1; |
895 | flag_tree_ccp = opt1; | |
896 | flag_tree_dce = opt1; | |
897 | flag_tree_dom = opt1; | |
898 | flag_tree_dse = opt1; | |
899 | flag_tree_ter = opt1; | |
900 | flag_tree_sra = opt1; | |
901 | flag_tree_copyrename = opt1; | |
902 | flag_tree_fre = opt1; | |
903 | flag_tree_copy_prop = opt1; | |
904 | flag_tree_sink = opt1; | |
905 | flag_tree_ch = opt1; | |
906 | ||
907 | /* -O2 optimizations. */ | |
908 | opt2 = (optimize >= 2); | |
909 | flag_inline_small_functions = opt2; | |
3e293154 | 910 | flag_indirect_inlining = opt2; |
ab442df7 MM |
911 | flag_thread_jumps = opt2; |
912 | flag_crossjumping = opt2; | |
913 | flag_optimize_sibling_calls = opt2; | |
914 | flag_forward_propagate = opt2; | |
915 | flag_cse_follow_jumps = opt2; | |
916 | flag_gcse = opt2; | |
917 | flag_expensive_optimizations = opt2; | |
918 | flag_rerun_cse_after_loop = opt2; | |
919 | flag_caller_saves = opt2; | |
920 | flag_peephole2 = opt2; | |
9756310a | 921 | #ifdef INSN_SCHEDULING |
ab442df7 MM |
922 | flag_schedule_insns = opt2; |
923 | flag_schedule_insns_after_reload = opt2; | |
9756310a | 924 | #endif |
ab442df7 MM |
925 | flag_regmove = opt2; |
926 | flag_strict_aliasing = opt2; | |
927 | flag_strict_overflow = opt2; | |
928 | flag_delete_null_pointer_checks = opt2; | |
929 | flag_reorder_blocks = opt2; | |
930 | flag_reorder_functions = opt2; | |
ab442df7 MM |
931 | flag_tree_vrp = opt2; |
932 | flag_tree_builtin_call_dce = opt2; | |
933 | flag_tree_pre = opt2; | |
fcbe056b JH |
934 | flag_tree_switch_conversion = 1; |
935 | flag_ipa_cp = opt2; | |
116cb604 | 936 | |
dce2b2f6 | 937 | /* Allow more virtual operators to increase alias precision. */ |
0e1f4c6b | 938 | |
ab442df7 MM |
939 | set_param_value ("max-aliased-vops", |
940 | (opt2) ? 500 : initial_max_aliased_vops); | |
9756310a | 941 | |
ab442df7 MM |
942 | /* Track fields in field-sensitive alias analysis. */ |
943 | set_param_value ("max-fields-for-field-sensitive", | |
944 | (opt2) ? 100 : initial_max_fields_for_field_sensitive); | |
e9e0aa2c | 945 | |
ab442df7 MM |
946 | /* -O3 optimizations. */ |
947 | opt3 = (optimize >= 3); | |
948 | flag_predictive_commoning = opt3; | |
949 | flag_inline_functions = opt3; | |
950 | flag_unswitch_loops = opt3; | |
951 | flag_gcse_after_reload = opt3; | |
952 | flag_tree_vectorize = opt3; | |
fcbe056b JH |
953 | flag_ipa_cp_clone = opt3; |
954 | if (flag_ipa_cp_clone) | |
955 | flag_ipa_cp = 1; | |
ab442df7 MM |
956 | |
957 | /* Allow even more virtual operators. Max-aliased-vops was set above for | |
958 | -O2, so don't reset it unless we are at -O3. */ | |
959 | if (opt3) | |
960 | set_param_value ("max-aliased-vops", 1000); | |
9756310a | 961 | |
ab442df7 MM |
962 | set_param_value ("avg-aliased-vops", (opt3) ? 3 : initial_avg_aliased_vops); |
963 | ||
964 | /* Just -O1/-O0 optimizations. */ | |
965 | opt1_max = (optimize <= 1); | |
966 | align_loops = opt1_max; | |
967 | align_jumps = opt1_max; | |
968 | align_labels = opt1_max; | |
969 | align_functions = opt1_max; | |
970 | ||
971 | if (optimize_size) | |
9756310a | 972 | { |
ab442df7 MM |
973 | /* Inlining of functions reducing size is a good idea regardless of them |
974 | being declared inline. */ | |
975 | flag_inline_functions = 1; | |
976 | ||
ab442df7 MM |
977 | /* Basic optimization options. */ |
978 | optimize_size = 1; | |
979 | if (optimize > 2) | |
980 | optimize = 2; | |
fe94b653 RE |
981 | |
982 | /* We want to crossjump as much as possible. */ | |
983 | set_param_value ("min-crossjump-insns", 1); | |
f736cb3e | 984 | } |
ab442df7 MM |
985 | else |
986 | set_param_value ("min-crossjump-insns", initial_min_crossjump_insns); | |
f736cb3e | 987 | |
ab442df7 MM |
988 | if (first_time_p) |
989 | { | |
990 | /* Initialize whether `char' is signed. */ | |
991 | flag_signed_char = DEFAULT_SIGNED_CHAR; | |
992 | /* Set this to a special "uninitialized" value. The actual default is | |
993 | set after target options have been processed. */ | |
994 | flag_short_enums = 2; | |
995 | ||
996 | /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can | |
997 | modify it. */ | |
998 | target_flags = targetm.default_target_flags; | |
999 | ||
1000 | /* Some targets have ABI-specified unwind tables. */ | |
1001 | flag_unwind_tables = targetm.unwind_tables_default; | |
1002 | } | |
9756310a NB |
1003 | |
1004 | #ifdef OPTIMIZATION_OPTIONS | |
1005 | /* Allow default optimizations to be specified on a per-machine basis. */ | |
1006 | OPTIMIZATION_OPTIONS (optimize, optimize_size); | |
1007 | #endif | |
1008 | ||
1009 | handle_options (argc, argv, lang_mask); | |
1010 | ||
57b08d04 ST |
1011 | /* -fno-unit-at-a-time and -fno-toplevel-reorder handling. */ |
1012 | if (!flag_unit_at_a_time) | |
1013 | { | |
1014 | flag_section_anchors = 0; | |
1015 | flag_toplevel_reorder = 0; | |
1016 | } | |
1017 | else if (!optimize && flag_toplevel_reorder == 2) | |
1018 | /* We disable toplevel reordering at -O0 to disable transformations that | |
1019 | might be surprising to end users and to get -fno-toplevel-reorder | |
1020 | tested, but we keep section anchors. */ | |
1021 | flag_toplevel_reorder = 0; | |
1022 | else if (!flag_toplevel_reorder) | |
1023 | { | |
1024 | if (flag_section_anchors == 1) | |
1025 | error ("section anchors must be disabled when toplevel reorder is disabled"); | |
1026 | flag_section_anchors = 0; | |
1027 | } | |
1028 | ||
ab442df7 MM |
1029 | if (first_time_p) |
1030 | { | |
1031 | if (flag_pie) | |
1032 | flag_pic = flag_pie; | |
1033 | if (flag_pic && !flag_pie) | |
1034 | flag_shlib = 1; | |
ab442df7 | 1035 | } |
9756310a | 1036 | |
9756310a NB |
1037 | if (optimize == 0) |
1038 | { | |
1039 | /* Inlining does not work if not optimizing, | |
1040 | so force it not to be done. */ | |
9756310a | 1041 | warn_inline = 0; |
e90acd93 | 1042 | flag_no_inline = 1; |
9756310a NB |
1043 | } |
1044 | ||
750054a2 CT |
1045 | /* The optimization to partition hot and cold basic blocks into separate |
1046 | sections of the .o and executable files does not work (currently) | |
e395963f JW |
1047 | with exception handling. This is because there is no support for |
1048 | generating unwind info. If flag_exceptions is turned on we need to | |
750054a2 CT |
1049 | turn off the partitioning optimization. */ |
1050 | ||
1051 | if (flag_exceptions && flag_reorder_blocks_and_partition) | |
1052 | { | |
1f5b3869 MLI |
1053 | inform (input_location, |
1054 | "-freorder-blocks-and-partition does not work with exceptions"); | |
750054a2 CT |
1055 | flag_reorder_blocks_and_partition = 0; |
1056 | flag_reorder_blocks = 1; | |
1057 | } | |
c7466dee | 1058 | |
e395963f JW |
1059 | /* If user requested unwind info, then turn off the partitioning |
1060 | optimization. */ | |
1061 | ||
1062 | if (flag_unwind_tables && ! targetm.unwind_tables_default | |
1063 | && flag_reorder_blocks_and_partition) | |
1064 | { | |
1f5b3869 | 1065 | inform (input_location, "-freorder-blocks-and-partition does not support unwind info"); |
e395963f JW |
1066 | flag_reorder_blocks_and_partition = 0; |
1067 | flag_reorder_blocks = 1; | |
1068 | } | |
1069 | ||
1070 | /* If the target requested unwind info, then turn off the partitioning | |
1071 | optimization with a different message. Likewise, if the target does not | |
1072 | support named sections. */ | |
1073 | ||
c7466dee | 1074 | if (flag_reorder_blocks_and_partition |
e395963f JW |
1075 | && (!targetm.have_named_sections |
1076 | || (flag_unwind_tables && targetm.unwind_tables_default))) | |
c7466dee | 1077 | { |
1f5b3869 MLI |
1078 | inform (input_location, |
1079 | "-freorder-blocks-and-partition does not work on this architecture"); | |
c7466dee CT |
1080 | flag_reorder_blocks_and_partition = 0; |
1081 | flag_reorder_blocks = 1; | |
1082 | } | |
ab442df7 | 1083 | |
e855c69d AB |
1084 | /* Pipelining of outer loops is only possible when general pipelining |
1085 | capabilities are requested. */ | |
1086 | if (!flag_sel_sched_pipelining) | |
1087 | flag_sel_sched_pipelining_outer_loops = 0; | |
1088 | ||
058e97ec VM |
1089 | #ifndef IRA_COVER_CLASSES |
1090 | if (flag_ira) | |
1091 | { | |
69abac81 | 1092 | inform (input_location, "-fira does not work on this architecture"); |
058e97ec VM |
1093 | flag_ira = 0; |
1094 | } | |
1095 | #endif | |
1096 | ||
ab442df7 MM |
1097 | /* Save the current optimization options if this is the first call. */ |
1098 | if (first_time_p) | |
1099 | { | |
1100 | optimization_default_node = build_optimization_node (); | |
1101 | optimization_current_node = optimization_default_node; | |
1102 | first_time_p = false; | |
1103 | } | |
9756310a NB |
1104 | } |
1105 | ||
c662432e NC |
1106 | #define LEFT_COLUMN 27 |
1107 | ||
1108 | /* Output ITEM, of length ITEM_WIDTH, in the left column, | |
1109 | followed by word-wrapped HELP in a second column. */ | |
1110 | static void | |
1111 | wrap_help (const char *help, | |
1112 | const char *item, | |
1113 | unsigned int item_width, | |
1114 | unsigned int columns) | |
1115 | { | |
1116 | unsigned int col_width = LEFT_COLUMN; | |
1117 | unsigned int remaining, room, len; | |
1118 | ||
1119 | remaining = strlen (help); | |
1120 | ||
1121 | do | |
1122 | { | |
1123 | room = columns - 3 - MAX (col_width, item_width); | |
1124 | if (room > columns) | |
1125 | room = 0; | |
1126 | len = remaining; | |
1127 | ||
1128 | if (room < len) | |
1129 | { | |
1130 | unsigned int i; | |
1131 | ||
1132 | for (i = 0; help[i]; i++) | |
1133 | { | |
1134 | if (i >= room && len != remaining) | |
1135 | break; | |
1136 | if (help[i] == ' ') | |
1137 | len = i; | |
1138 | else if ((help[i] == '-' || help[i] == '/') | |
1139 | && help[i + 1] != ' ' | |
1140 | && i > 0 && ISALPHA (help[i - 1])) | |
1141 | len = i + 1; | |
1142 | } | |
1143 | } | |
1144 | ||
1145 | printf( " %-*.*s %.*s\n", col_width, item_width, item, len, help); | |
1146 | item_width = 0; | |
1147 | while (help[len] == ' ') | |
1148 | len++; | |
1149 | help += len; | |
1150 | remaining -= len; | |
1151 | } | |
1152 | while (remaining); | |
1153 | } | |
1154 | ||
1155 | /* Print help for a specific front-end, etc. */ | |
1156 | static void | |
1157 | print_filtered_help (unsigned int include_flags, | |
1158 | unsigned int exclude_flags, | |
1159 | unsigned int any_flags, | |
1160 | unsigned int columns) | |
1161 | { | |
1162 | unsigned int i; | |
1163 | const char *help; | |
1164 | static char *printed = NULL; | |
1165 | bool found = false; | |
1166 | bool displayed = false; | |
1167 | ||
1168 | if (include_flags == CL_PARAMS) | |
1169 | { | |
1170 | for (i = 0; i < LAST_PARAM; i++) | |
1171 | { | |
1172 | const char *param = compiler_params[i].option; | |
1173 | ||
1174 | help = compiler_params[i].help; | |
1175 | if (help == NULL || *help == '\0') | |
1176 | { | |
1177 | if (exclude_flags & CL_UNDOCUMENTED) | |
1178 | continue; | |
1179 | help = undocumented_msg; | |
1180 | } | |
1181 | ||
1182 | /* Get the translation. */ | |
1183 | help = _(help); | |
1184 | ||
1185 | wrap_help (help, param, strlen (param), columns); | |
1186 | } | |
1187 | putchar ('\n'); | |
1188 | return; | |
1189 | } | |
1190 | ||
1191 | if (!printed) | |
d3bfe4de | 1192 | printed = XCNEWVAR (char, cl_options_count); |
c662432e NC |
1193 | |
1194 | for (i = 0; i < cl_options_count; i++) | |
1195 | { | |
1196 | static char new_help[128]; | |
1197 | const struct cl_option *option = cl_options + i; | |
1198 | unsigned int len; | |
1199 | const char *opt; | |
1200 | const char *tab; | |
1201 | ||
1202 | if (include_flags == 0 | |
1203 | || ((option->flags & include_flags) != include_flags)) | |
1204 | { | |
1205 | if ((option->flags & any_flags) == 0) | |
1206 | continue; | |
1207 | } | |
1208 | ||
1209 | /* Skip unwanted switches. */ | |
1210 | if ((option->flags & exclude_flags) != 0) | |
1211 | continue; | |
1212 | ||
1213 | found = true; | |
1214 | /* Skip switches that have already been printed. */ | |
1215 | if (printed[i]) | |
1216 | continue; | |
1217 | ||
1218 | printed[i] = true; | |
1219 | ||
1220 | help = option->help; | |
1221 | if (help == NULL) | |
1222 | { | |
1223 | if (exclude_flags & CL_UNDOCUMENTED) | |
1224 | continue; | |
1225 | help = undocumented_msg; | |
1226 | } | |
1227 | ||
1228 | /* Get the translation. */ | |
1229 | help = _(help); | |
1230 | ||
1231 | /* Find the gap between the name of the | |
1232 | option and its descriptive text. */ | |
1233 | tab = strchr (help, '\t'); | |
1234 | if (tab) | |
1235 | { | |
1236 | len = tab - help; | |
1237 | opt = help; | |
1238 | help = tab + 1; | |
1239 | } | |
1240 | else | |
1241 | { | |
1242 | opt = option->opt_text; | |
1243 | len = strlen (opt); | |
1244 | } | |
1245 | ||
1246 | /* With the -Q option enabled we change the descriptive text associated | |
1247 | with an option to be an indication of its current setting. */ | |
1248 | if (!quiet_flag) | |
1249 | { | |
1250 | if (len < (LEFT_COLUMN + 2)) | |
1251 | strcpy (new_help, "\t\t"); | |
1252 | else | |
1253 | strcpy (new_help, "\t"); | |
1254 | ||
1255 | if (option->flag_var != NULL) | |
1256 | { | |
1257 | if (option->flags & CL_JOINED) | |
1258 | { | |
1259 | if (option->var_type == CLVC_STRING) | |
1260 | { | |
1261 | if (* (const char **) option->flag_var != NULL) | |
1262 | snprintf (new_help + strlen (new_help), | |
1263 | sizeof (new_help) - strlen (new_help), | |
1264 | * (const char **) option->flag_var); | |
1265 | } | |
1266 | else | |
1267 | sprintf (new_help + strlen (new_help), | |
1268 | "%#x", * (int *) option->flag_var); | |
1269 | } | |
1270 | else | |
1271 | strcat (new_help, option_enabled (i) | |
1272 | ? _("[enabled]") : _("[disabled]")); | |
1273 | } | |
1274 | ||
1275 | help = new_help; | |
1276 | } | |
1277 | ||
1278 | wrap_help (help, opt, len, columns); | |
1279 | displayed = true; | |
1280 | } | |
1281 | ||
1282 | if (! found) | |
b3eaaf1a NC |
1283 | { |
1284 | unsigned int langs = include_flags & CL_LANG_ALL; | |
1285 | ||
1286 | if (langs == 0) | |
1287 | printf (_(" No options with the desired characteristics were found\n")); | |
1288 | else | |
1289 | { | |
1290 | unsigned int i; | |
1291 | ||
1292 | /* PR 31349: Tell the user how to see all of the | |
1293 | options supported by a specific front end. */ | |
1294 | for (i = 0; (1U << i) < CL_LANG_ALL; i ++) | |
1295 | if ((1U << i) & langs) | |
1296 | printf (_(" None found. Use --help=%s to show *all* the options supported by the %s front-end\n"), | |
1297 | lang_names[i], lang_names[i]); | |
1298 | } | |
1299 | ||
1300 | } | |
c662432e NC |
1301 | else if (! displayed) |
1302 | printf (_(" All options with the desired characteristics have already been displayed\n")); | |
1303 | ||
1304 | putchar ('\n'); | |
1305 | } | |
1306 | ||
1307 | /* Display help for a specified type of option. | |
1308 | The options must have ALL of the INCLUDE_FLAGS set | |
1309 | ANY of the flags in the ANY_FLAGS set | |
1310 | and NONE of the EXCLUDE_FLAGS set. */ | |
1311 | static void | |
1312 | print_specific_help (unsigned int include_flags, | |
1313 | unsigned int exclude_flags, | |
1314 | unsigned int any_flags) | |
1315 | { | |
1316 | unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1317 | const char * description = NULL; | |
1318 | const char * descrip_extra = ""; | |
1319 | size_t i; | |
1320 | unsigned int flag; | |
1321 | static unsigned int columns = 0; | |
1322 | ||
1323 | /* Sanity check: Make sure that we do not have more | |
1324 | languages than we have bits available to enumerate them. */ | |
1325 | gcc_assert ((1U << cl_lang_count) < CL_MIN_OPTION_CLASS); | |
1326 | ||
1327 | /* If we have not done so already, obtain | |
1328 | the desired maximum width of the output. */ | |
1329 | if (columns == 0) | |
1330 | { | |
1331 | const char *p; | |
1332 | ||
1333 | GET_ENVIRONMENT (p, "COLUMNS"); | |
1334 | if (p != NULL) | |
1335 | { | |
1336 | int value = atoi (p); | |
1337 | ||
1338 | if (value > 0) | |
1339 | columns = value; | |
1340 | } | |
1341 | ||
1342 | if (columns == 0) | |
1343 | /* Use a reasonable default. */ | |
1344 | columns = 80; | |
1345 | } | |
1346 | ||
1347 | /* Decide upon the title for the options that we are going to display. */ | |
1348 | for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++) | |
1349 | { | |
1350 | switch (flag & include_flags) | |
1351 | { | |
1352 | case 0: | |
1353 | break; | |
1354 | ||
1355 | case CL_TARGET: | |
1356 | description = _("The following options are target specific"); | |
1357 | break; | |
1358 | case CL_WARNING: | |
1359 | description = _("The following options control compiler warning messages"); | |
1360 | break; | |
1361 | case CL_OPTIMIZATION: | |
1362 | description = _("The following options control optimizations"); | |
1363 | break; | |
1364 | case CL_COMMON: | |
1365 | description = _("The following options are language-independent"); | |
1366 | break; | |
1367 | case CL_PARAMS: | |
1368 | description = _("The --param option recognizes the following as parameters"); | |
1369 | break; | |
1370 | default: | |
1371 | if (i >= cl_lang_count) | |
1372 | break; | |
1373 | if ((exclude_flags & ((1U << cl_lang_count) - 1)) != 0) | |
c01c261d | 1374 | description = _("The following options are specific to just the language "); |
c662432e | 1375 | else |
b5456e04 | 1376 | description = _("The following options are supported by the language "); |
b3eaaf1a | 1377 | descrip_extra = lang_names [i]; |
c662432e NC |
1378 | break; |
1379 | } | |
1380 | } | |
1381 | ||
1382 | if (description == NULL) | |
1383 | { | |
1384 | if (any_flags == 0) | |
1385 | { | |
1386 | if (include_flags == CL_UNDOCUMENTED) | |
1387 | description = _("The following options are not documented"); | |
1388 | else | |
1389 | { | |
1390 | internal_error ("unrecognized include_flags 0x%x passed to print_specific_help", | |
1391 | include_flags); | |
1392 | return; | |
1393 | } | |
1394 | } | |
1395 | else | |
1396 | { | |
1397 | if (any_flags & all_langs_mask) | |
1398 | description = _("The following options are language-related"); | |
1399 | else | |
1400 | description = _("The following options are language-independent"); | |
1401 | } | |
1402 | } | |
1403 | ||
1404 | printf ("%s%s:\n", description, descrip_extra); | |
1405 | print_filtered_help (include_flags, exclude_flags, any_flags, columns); | |
1406 | } | |
1407 | ||
d7b42618 | 1408 | /* Handle target- and language-independent options. Return zero to |
50431bc4 ZD |
1409 | generate an "unknown option" message. Only options that need |
1410 | extra handling need to be listed here; if you simply want | |
1411 | VALUE assigned to a variable, it happens automatically. */ | |
1412 | ||
d7b42618 | 1413 | static int |
79cf5994 DD |
1414 | common_handle_option (size_t scode, const char *arg, int value, |
1415 | unsigned int lang_mask) | |
d7b42618 | 1416 | { |
b3eaaf1a | 1417 | static bool verbose = false; |
d7b42618 NB |
1418 | enum opt_code code = (enum opt_code) scode; |
1419 | ||
d7b42618 NB |
1420 | switch (code) |
1421 | { | |
903caebf NB |
1422 | case OPT__param: |
1423 | handle_param (arg); | |
1424 | break; | |
1425 | ||
b3eaaf1a NC |
1426 | case OPT_v: |
1427 | verbose = true; | |
1428 | break; | |
1429 | ||
c662432e NC |
1430 | case OPT_fhelp: |
1431 | case OPT__help: | |
1432 | { | |
1433 | unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1434 | unsigned int undoc_mask; | |
1435 | unsigned int i; | |
1436 | ||
b3eaaf1a | 1437 | undoc_mask = (verbose | extra_warnings) ? 0 : CL_UNDOCUMENTED; |
c662432e NC |
1438 | /* First display any single language specific options. */ |
1439 | for (i = 0; i < cl_lang_count; i++) | |
1440 | print_specific_help | |
1441 | (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0); | |
1442 | /* Next display any multi language specific options. */ | |
1443 | print_specific_help (0, undoc_mask, all_langs_mask); | |
1444 | /* Then display any remaining, non-language options. */ | |
1445 | for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1) | |
1446 | print_specific_help (i, undoc_mask, 0); | |
1447 | exit_after_options = true; | |
1448 | break; | |
1449 | } | |
1450 | ||
1451 | case OPT_ftarget_help: | |
d185d268 | 1452 | case OPT__target_help: |
c662432e | 1453 | print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0); |
d185d268 | 1454 | exit_after_options = true; |
67e6ba46 NC |
1455 | |
1456 | /* Allow the target a chance to give the user some additional information. */ | |
1457 | if (targetm.target_help) | |
1458 | targetm.target_help (); | |
d185d268 NB |
1459 | break; |
1460 | ||
c662432e NC |
1461 | case OPT_fhelp_: |
1462 | case OPT__help_: | |
1463 | { | |
1464 | const char * a = arg; | |
1465 | unsigned int include_flags = 0; | |
1466 | /* Note - by default we include undocumented options when listing | |
1467 | specific classes. If you only want to see documented options | |
fa10beec | 1468 | then add ",^undocumented" to the --help= option. E.g.: |
c662432e NC |
1469 | |
1470 | --help=target,^undocumented */ | |
1471 | unsigned int exclude_flags = 0; | |
1472 | ||
1473 | /* Walk along the argument string, parsing each word in turn. | |
1474 | The format is: | |
1475 | arg = [^]{word}[,{arg}] | |
b5456e04 BM |
1476 | word = {optimizers|target|warnings|undocumented| |
1477 | params|common|<language>} */ | |
c662432e NC |
1478 | while (* a != 0) |
1479 | { | |
1480 | static struct | |
1481 | { | |
1482 | const char * string; | |
1483 | unsigned int flag; | |
1484 | } | |
1485 | specifics[] = | |
1486 | { | |
1487 | { "optimizers", CL_OPTIMIZATION }, | |
1488 | { "target", CL_TARGET }, | |
1489 | { "warnings", CL_WARNING }, | |
1490 | { "undocumented", CL_UNDOCUMENTED }, | |
1491 | { "params", CL_PARAMS }, | |
1492 | { "joined", CL_JOINED }, | |
1493 | { "separate", CL_SEPARATE }, | |
b5456e04 | 1494 | { "common", CL_COMMON }, |
c662432e NC |
1495 | { NULL, 0 } |
1496 | }; | |
1497 | unsigned int * pflags; | |
1498 | char * comma; | |
b3eaaf1a | 1499 | unsigned int lang_flag, specific_flag; |
c662432e NC |
1500 | unsigned int len; |
1501 | unsigned int i; | |
1502 | ||
1503 | if (* a == '^') | |
1504 | { | |
1505 | ++ a; | |
1506 | pflags = & exclude_flags; | |
1507 | } | |
1508 | else | |
1509 | pflags = & include_flags; | |
1510 | ||
1511 | comma = strchr (a, ','); | |
1512 | if (comma == NULL) | |
1513 | len = strlen (a); | |
1514 | else | |
1515 | len = comma - a; | |
1516 | ||
b3eaaf1a NC |
1517 | /* Check to see if the string matches an option class name. */ |
1518 | for (i = 0, specific_flag = 0; specifics[i].string != NULL; i++) | |
c662432e NC |
1519 | if (strncasecmp (a, specifics[i].string, len) == 0) |
1520 | { | |
b3eaaf1a NC |
1521 | specific_flag = specifics[i].flag; |
1522 | break; | |
1523 | } | |
1524 | ||
1525 | /* Check to see if the string matches a language name. | |
1526 | Note - we rely upon the alpha-sorted nature of the entries in | |
1527 | the lang_names array, specifically that shorter names appear | |
fa10beec | 1528 | before their longer variants. (i.e. C before C++). That way |
b3eaaf1a NC |
1529 | when we are attempting to match --help=c for example we will |
1530 | match with C first and not C++. */ | |
1531 | for (i = 0, lang_flag = 0; i < cl_lang_count; i++) | |
1532 | if (strncasecmp (a, lang_names[i], len) == 0) | |
1533 | { | |
1534 | lang_flag = 1U << i; | |
c662432e NC |
1535 | break; |
1536 | } | |
1537 | ||
b3eaaf1a | 1538 | if (specific_flag != 0) |
c662432e | 1539 | { |
b3eaaf1a NC |
1540 | if (lang_flag == 0) |
1541 | * pflags |= specific_flag; | |
1542 | else | |
1543 | { | |
1544 | /* The option's argument matches both the start of a | |
1545 | language name and the start of an option class name. | |
1546 | We have a special case for when the user has | |
1547 | specified "--help=c", but otherwise we have to issue | |
1548 | a warning. */ | |
1549 | if (strncasecmp (a, "c", len) == 0) | |
1550 | * pflags |= lang_flag; | |
1551 | else | |
1552 | fnotice (stderr, | |
1553 | "warning: --help argument %.*s is ambiguous, please be more specific\n", | |
1554 | len, a); | |
1555 | } | |
c662432e | 1556 | } |
b3eaaf1a NC |
1557 | else if (lang_flag != 0) |
1558 | * pflags |= lang_flag; | |
1559 | else | |
1560 | fnotice (stderr, | |
1561 | "warning: unrecognized argument to --help= option: %.*s\n", | |
1562 | len, a); | |
c662432e NC |
1563 | |
1564 | if (comma == NULL) | |
1565 | break; | |
1566 | a = comma + 1; | |
1567 | } | |
1568 | ||
1569 | if (include_flags) | |
1570 | print_specific_help (include_flags, exclude_flags, 0); | |
1571 | exit_after_options = true; | |
1572 | break; | |
1573 | } | |
1574 | ||
d185d268 NB |
1575 | case OPT__version: |
1576 | print_version (stderr, ""); | |
1577 | exit_after_options = true; | |
1578 | break; | |
1579 | ||
1580 | case OPT_G: | |
7b086b11 | 1581 | g_switch_value = value; |
d185d268 NB |
1582 | g_switch_set = true; |
1583 | break; | |
1584 | ||
903caebf NB |
1585 | case OPT_O: |
1586 | case OPT_Os: | |
1587 | /* Currently handled in a prescan. */ | |
1588 | break; | |
1589 | ||
1590 | case OPT_W: | |
1591 | /* For backward compatibility, -W is the same as -Wextra. */ | |
1592 | set_Wextra (value); | |
1593 | break; | |
1594 | ||
1ebc7e68 RA |
1595 | case OPT_Wdisallowed_function_list_: |
1596 | warn_disallowed_functions = true; | |
1597 | add_comma_separated_to_vector | |
1598 | (&warning_disallowed_functions, arg); | |
1599 | break; | |
1600 | ||
79cf5994 | 1601 | case OPT_Werror_: |
dc90f45b | 1602 | enable_warning_as_error (arg, value, lang_mask); |
79cf5994 DD |
1603 | break; |
1604 | ||
903caebf NB |
1605 | case OPT_Wextra: |
1606 | set_Wextra (value); | |
1607 | break; | |
1608 | ||
e01cc6dc | 1609 | case OPT_Wlarger_than_: |
e8fc888d MLI |
1610 | /* This form corresponds to -Wlarger-than-. |
1611 | Kept for backward compatibility. | |
1612 | Don't use it as the first argument of warning(). */ | |
1613 | ||
1614 | case OPT_Wlarger_than_eq: | |
e01cc6dc NB |
1615 | larger_than_size = value; |
1616 | warn_larger_than = value != -1; | |
1617 | break; | |
1618 | ||
a214518f SP |
1619 | case OPT_Wframe_larger_than_: |
1620 | frame_larger_than_size = value; | |
1621 | warn_frame_larger_than = value != -1; | |
1622 | break; | |
1623 | ||
e01cc6dc | 1624 | case OPT_Wstrict_aliasing: |
79bedddc SR |
1625 | set_Wstrict_aliasing (value); |
1626 | break; | |
1627 | ||
5399d643 | 1628 | case OPT_Wstrict_aliasing_: |
e01cc6dc NB |
1629 | warn_strict_aliasing = value; |
1630 | break; | |
1631 | ||
6ac01510 | 1632 | case OPT_Wstrict_overflow: |
4d4362c8 ILT |
1633 | warn_strict_overflow = (value |
1634 | ? (int) WARN_STRICT_OVERFLOW_CONDITIONAL | |
1635 | : 0); | |
1636 | break; | |
1637 | ||
6ac01510 ILT |
1638 | case OPT_Wstrict_overflow_: |
1639 | warn_strict_overflow = value; | |
1640 | break; | |
1641 | ||
903caebf | 1642 | case OPT_Wunused: |
e73f7547 | 1643 | warn_unused = value; |
903caebf NB |
1644 | break; |
1645 | ||
d185d268 NB |
1646 | case OPT_aux_info: |
1647 | case OPT_aux_info_: | |
1648 | aux_info_file_name = arg; | |
1649 | flag_gen_aux_info = 1; | |
1650 | break; | |
1651 | ||
1652 | case OPT_auxbase: | |
1653 | aux_base_name = arg; | |
1654 | break; | |
1655 | ||
1656 | case OPT_auxbase_strip: | |
1657 | { | |
1658 | char *tmp = xstrdup (arg); | |
1659 | strip_off_ending (tmp, strlen (tmp)); | |
1660 | if (tmp[0]) | |
1661 | aux_base_name = tmp; | |
1662 | } | |
1663 | break; | |
1664 | ||
1665 | case OPT_d: | |
1666 | decode_d_option (arg); | |
1667 | break; | |
1668 | ||
1669 | case OPT_dumpbase: | |
1670 | dump_base_name = arg; | |
1671 | break; | |
1672 | ||
0fcd5dda NB |
1673 | case OPT_falign_functions_: |
1674 | align_functions = value; | |
1675 | break; | |
1676 | ||
0fcd5dda NB |
1677 | case OPT_falign_jumps_: |
1678 | align_jumps = value; | |
1679 | break; | |
1680 | ||
0fcd5dda NB |
1681 | case OPT_falign_labels_: |
1682 | align_labels = value; | |
1683 | break; | |
1684 | ||
0fcd5dda NB |
1685 | case OPT_falign_loops_: |
1686 | align_loops = value; | |
1687 | break; | |
1688 | ||
6ff3a151 | 1689 | case OPT_fbranch_probabilities: |
a8a5f53a | 1690 | flag_branch_probabilities_set = true; |
1194fc79 R |
1691 | break; |
1692 | ||
058de654 NB |
1693 | case OPT_fcall_used_: |
1694 | fix_register (arg, 0, 1); | |
1695 | break; | |
1696 | ||
1697 | case OPT_fcall_saved_: | |
1698 | fix_register (arg, 0, 0); | |
1699 | break; | |
6fb5fa3c DB |
1700 | |
1701 | case OPT_fdbg_cnt_: | |
1702 | dbg_cnt_process_opt (arg); | |
1703 | break; | |
0a090f42 SP |
1704 | |
1705 | case OPT_fdbg_cnt_list: | |
1706 | dbg_cnt_list_all_counters (); | |
1707 | break; | |
058de654 | 1708 | |
c8aea42c PB |
1709 | case OPT_fdebug_prefix_map_: |
1710 | add_debug_prefix_map (arg); | |
1711 | break; | |
1712 | ||
de32c0cb NB |
1713 | case OPT_fdiagnostics_show_location_: |
1714 | if (!strcmp (arg, "once")) | |
1715 | diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
1716 | else if (!strcmp (arg, "every-line")) | |
1717 | diagnostic_prefixing_rule (global_dc) | |
1718 | = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE; | |
1719 | else | |
1720 | return 0; | |
1721 | break; | |
1722 | ||
2098fe9e DD |
1723 | case OPT_fdiagnostics_show_option: |
1724 | global_dc->show_option_requested = true; | |
1725 | break; | |
1726 | ||
6de9cd9a DN |
1727 | case OPT_fdump_: |
1728 | if (!dump_switch_p (arg)) | |
1729 | return 0; | |
1730 | break; | |
1731 | ||
058de654 NB |
1732 | case OPT_ffast_math: |
1733 | set_fast_math_flags (value); | |
1734 | break; | |
1735 | ||
a1a82611 RE |
1736 | case OPT_funsafe_math_optimizations: |
1737 | set_unsafe_math_optimizations_flags (value); | |
1738 | break; | |
1739 | ||
058de654 NB |
1740 | case OPT_ffixed_: |
1741 | fix_register (arg, 1, 1); | |
1742 | break; | |
1743 | ||
d302c9d6 NB |
1744 | case OPT_finline_limit_: |
1745 | case OPT_finline_limit_eq: | |
d302c9d6 NB |
1746 | set_param_value ("max-inline-insns-single", value / 2); |
1747 | set_param_value ("max-inline-insns-auto", value / 2); | |
d302c9d6 NB |
1748 | break; |
1749 | ||
8d5a7d1f | 1750 | case OPT_finstrument_functions_exclude_function_list_: |
1ebc7e68 | 1751 | add_comma_separated_to_vector |
8d5a7d1f ILT |
1752 | (&flag_instrument_functions_exclude_functions, arg); |
1753 | break; | |
1754 | ||
1755 | case OPT_finstrument_functions_exclude_file_list_: | |
1ebc7e68 | 1756 | add_comma_separated_to_vector |
8d5a7d1f ILT |
1757 | (&flag_instrument_functions_exclude_files, arg); |
1758 | break; | |
1759 | ||
de32c0cb | 1760 | case OPT_fmessage_length_: |
b6fe0bb8 | 1761 | pp_set_line_maximum_length (global_dc->printer, value); |
de32c0cb NB |
1762 | break; |
1763 | ||
467cecf3 JB |
1764 | case OPT_fpack_struct_: |
1765 | if (value <= 0 || (value & (value - 1)) || value > 16) | |
c662432e | 1766 | error ("structure alignment must be a small power of two, not %d", value); |
467cecf3 JB |
1767 | else |
1768 | { | |
1769 | initial_max_fld_align = value; | |
1770 | maximum_field_alignment = value * BITS_PER_UNIT; | |
1771 | } | |
1772 | break; | |
1773 | ||
de32c0cb | 1774 | case OPT_fpeel_loops: |
a8a5f53a | 1775 | flag_peel_loops_set = true; |
6ff3a151 NB |
1776 | break; |
1777 | ||
1778 | case OPT_fprofile_arcs: | |
a8a5f53a | 1779 | profile_arc_flag_set = true; |
6ff3a151 NB |
1780 | break; |
1781 | ||
4d4b8cb9 JH |
1782 | case OPT_finline_functions: |
1783 | flag_inline_functions_set = true; | |
1784 | break; | |
1785 | ||
2f908293 SP |
1786 | case OPT_fprofile_dir_: |
1787 | profile_data_prefix = xstrdup (arg); | |
1788 | break; | |
1789 | ||
1790 | case OPT_fprofile_use_: | |
1791 | profile_data_prefix = xstrdup (arg); | |
1792 | flag_profile_use = true; | |
1793 | value = true; | |
1794 | /* No break here - do -fprofile-use processing. */ | |
a8a5f53a JH |
1795 | case OPT_fprofile_use: |
1796 | if (!flag_branch_probabilities_set) | |
1797 | flag_branch_probabilities = value; | |
1798 | if (!flag_profile_values_set) | |
1799 | flag_profile_values = value; | |
1800 | if (!flag_unroll_loops_set) | |
1801 | flag_unroll_loops = value; | |
1802 | if (!flag_peel_loops_set) | |
1803 | flag_peel_loops = value; | |
1804 | if (!flag_tracer_set) | |
1805 | flag_tracer = value; | |
1806 | if (!flag_value_profile_transformations_set) | |
1807 | flag_value_profile_transformations = value; | |
4d4b8cb9 JH |
1808 | if (!flag_inline_functions_set) |
1809 | flag_inline_functions = value; | |
ca30a539 JH |
1810 | if (!flag_ipa_cp_set) |
1811 | flag_ipa_cp = value; | |
1812 | if (!flag_ipa_cp_clone_set | |
1813 | && value && flag_ipa_cp) | |
1814 | flag_ipa_cp_clone = value; | |
8bcf15f6 JH |
1815 | if (!flag_predictive_commoning_set) |
1816 | flag_predictive_commoning = value; | |
1817 | if (!flag_unswitch_loops_set) | |
1818 | flag_unswitch_loops = value; | |
1819 | if (!flag_gcse_after_reload_set) | |
1820 | flag_gcse_after_reload = value; | |
a8a5f53a JH |
1821 | break; |
1822 | ||
2f908293 SP |
1823 | case OPT_fprofile_generate_: |
1824 | profile_data_prefix = xstrdup (arg); | |
1825 | value = true; | |
1826 | /* No break here - do -fprofile-generate processing. */ | |
a8a5f53a JH |
1827 | case OPT_fprofile_generate: |
1828 | if (!profile_arc_flag_set) | |
1829 | profile_arc_flag = value; | |
1830 | if (!flag_profile_values_set) | |
1831 | flag_profile_values = value; | |
1832 | if (!flag_value_profile_transformations_set) | |
1833 | flag_value_profile_transformations = value; | |
6b956c95 JH |
1834 | if (!flag_inline_functions_set) |
1835 | flag_inline_functions = value; | |
a8a5f53a JH |
1836 | break; |
1837 | ||
fca9dc00 | 1838 | case OPT_fprofile_values: |
a8a5f53a | 1839 | flag_profile_values_set = true; |
fca9dc00 ZD |
1840 | break; |
1841 | ||
d7afec4b ND |
1842 | case OPT_fvisibility_: |
1843 | { | |
1844 | if (!strcmp(arg, "default")) | |
1845 | default_visibility = VISIBILITY_DEFAULT; | |
1846 | else if (!strcmp(arg, "internal")) | |
1847 | default_visibility = VISIBILITY_INTERNAL; | |
1848 | else if (!strcmp(arg, "hidden")) | |
1849 | default_visibility = VISIBILITY_HIDDEN; | |
1850 | else if (!strcmp(arg, "protected")) | |
1851 | default_visibility = VISIBILITY_PROTECTED; | |
1852 | else | |
cc9795d4 | 1853 | error ("unrecognized visibility value \"%s\"", arg); |
d7afec4b ND |
1854 | } |
1855 | break; | |
1856 | ||
fca9dc00 | 1857 | case OPT_fvpt: |
6d9901e7 ZD |
1858 | flag_value_profile_transformations_set = true; |
1859 | break; | |
1860 | ||
de32c0cb NB |
1861 | case OPT_frandom_seed: |
1862 | /* The real switch is -fno-random-seed. */ | |
1863 | if (value) | |
1864 | return 0; | |
403d4851 | 1865 | set_random_seed (NULL); |
de32c0cb NB |
1866 | break; |
1867 | ||
1868 | case OPT_frandom_seed_: | |
403d4851 | 1869 | set_random_seed (arg); |
de32c0cb NB |
1870 | break; |
1871 | ||
e855c69d AB |
1872 | case OPT_fselective_scheduling: |
1873 | case OPT_fselective_scheduling2: | |
1874 | sel_sched_switch_set = true; | |
1875 | break; | |
1876 | ||
de32c0cb NB |
1877 | case OPT_fsched_verbose_: |
1878 | #ifdef INSN_SCHEDULING | |
1879 | fix_sched_param ("verbose", arg); | |
1880 | break; | |
1881 | #else | |
1882 | return 0; | |
1883 | #endif | |
1884 | ||
569fa502 DN |
1885 | case OPT_fsched_stalled_insns_: |
1886 | flag_sched_stalled_insns = value; | |
1887 | if (flag_sched_stalled_insns == 0) | |
1888 | flag_sched_stalled_insns = -1; | |
1889 | break; | |
1890 | ||
569fa502 DN |
1891 | case OPT_fsched_stalled_insns_dep_: |
1892 | flag_sched_stalled_insns_dep = value; | |
1893 | break; | |
6ff3a151 | 1894 | |
b38f3813 EB |
1895 | case OPT_fstack_check_: |
1896 | if (!strcmp (arg, "no")) | |
1897 | flag_stack_check = NO_STACK_CHECK; | |
1898 | else if (!strcmp (arg, "generic")) | |
1899 | /* This is the old stack checking method. */ | |
1900 | flag_stack_check = STACK_CHECK_BUILTIN | |
1901 | ? FULL_BUILTIN_STACK_CHECK | |
1902 | : GENERIC_STACK_CHECK; | |
1903 | else if (!strcmp (arg, "specific")) | |
1904 | /* This is the new stack checking method. */ | |
1905 | flag_stack_check = STACK_CHECK_BUILTIN | |
1906 | ? FULL_BUILTIN_STACK_CHECK | |
1907 | : STACK_CHECK_STATIC_BUILTIN | |
1908 | ? STATIC_BUILTIN_STACK_CHECK | |
1909 | : GENERIC_STACK_CHECK; | |
1910 | else | |
1911 | warning (0, "unknown stack check parameter \"%s\"", arg); | |
1912 | break; | |
1913 | ||
1914 | case OPT_fstack_check: | |
1915 | /* This is the same as the "specific" mode above. */ | |
1916 | if (value) | |
1917 | flag_stack_check = STACK_CHECK_BUILTIN | |
1918 | ? FULL_BUILTIN_STACK_CHECK | |
1919 | : STACK_CHECK_STATIC_BUILTIN | |
1920 | ? STATIC_BUILTIN_STACK_CHECK | |
1921 | : GENERIC_STACK_CHECK; | |
1922 | else | |
1923 | flag_stack_check = NO_STACK_CHECK; | |
1924 | break; | |
1925 | ||
de32c0cb NB |
1926 | case OPT_fstack_limit: |
1927 | /* The real switch is -fno-stack-limit. */ | |
1928 | if (value) | |
1929 | return 0; | |
1930 | stack_limit_rtx = NULL_RTX; | |
1931 | break; | |
1932 | ||
058de654 NB |
1933 | case OPT_fstack_limit_register_: |
1934 | { | |
1935 | int reg = decode_reg_name (arg); | |
1936 | if (reg < 0) | |
1937 | error ("unrecognized register name \"%s\"", arg); | |
1938 | else | |
1939 | stack_limit_rtx = gen_rtx_REG (Pmode, reg); | |
1940 | } | |
1941 | break; | |
1942 | ||
1943 | case OPT_fstack_limit_symbol_: | |
1944 | stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (arg)); | |
1945 | break; | |
1946 | ||
c866976a LB |
1947 | case OPT_ftree_vectorizer_verbose_: |
1948 | vect_set_verbosity_level (arg); | |
1949 | break; | |
1950 | ||
058de654 NB |
1951 | case OPT_ftls_model_: |
1952 | if (!strcmp (arg, "global-dynamic")) | |
1953 | flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; | |
1954 | else if (!strcmp (arg, "local-dynamic")) | |
1955 | flag_tls_default = TLS_MODEL_LOCAL_DYNAMIC; | |
1956 | else if (!strcmp (arg, "initial-exec")) | |
1957 | flag_tls_default = TLS_MODEL_INITIAL_EXEC; | |
1958 | else if (!strcmp (arg, "local-exec")) | |
1959 | flag_tls_default = TLS_MODEL_LOCAL_EXEC; | |
1960 | else | |
d4ee4d25 | 1961 | warning (0, "unknown tls-model \"%s\"", arg); |
058de654 NB |
1962 | break; |
1963 | ||
058e97ec VM |
1964 | case OPT_fira_algorithm_: |
1965 | if (!strcmp (arg, "regional")) | |
1966 | flag_ira_algorithm = IRA_ALGORITHM_REGIONAL; | |
1967 | else if (!strcmp (arg, "CB")) | |
1968 | flag_ira_algorithm = IRA_ALGORITHM_CB; | |
1969 | else if (!strcmp (arg, "mixed")) | |
1970 | flag_ira_algorithm = IRA_ALGORITHM_MIXED; | |
1971 | else | |
1972 | warning (0, "unknown ira algorithm \"%s\"", arg); | |
1973 | break; | |
1974 | ||
1975 | case OPT_fira_verbose_: | |
1976 | flag_ira_verbose = value; | |
1977 | break; | |
1978 | ||
de32c0cb | 1979 | case OPT_ftracer: |
a8a5f53a | 1980 | flag_tracer_set = true; |
6de9cd9a DN |
1981 | break; |
1982 | ||
ca30a539 JH |
1983 | case OPT_fipa_cp: |
1984 | flag_ipa_cp_set = true; | |
1985 | break; | |
1986 | ||
1987 | case OPT_fipa_cp_clone: | |
1988 | flag_ipa_cp_clone_set = true; | |
1989 | break; | |
1990 | ||
8bcf15f6 JH |
1991 | case OPT_fpredictive_commoning: |
1992 | flag_predictive_commoning_set = true; | |
1993 | break; | |
1994 | ||
1995 | case OPT_funswitch_loops: | |
1996 | flag_unswitch_loops_set = true; | |
1997 | break; | |
1998 | ||
1999 | case OPT_fgcse_after_reload: | |
2000 | flag_gcse_after_reload_set = true; | |
2001 | break; | |
2002 | ||
de32c0cb | 2003 | case OPT_funroll_loops: |
a8a5f53a | 2004 | flag_unroll_loops_set = true; |
6ff3a151 NB |
2005 | break; |
2006 | ||
e01cc6dc | 2007 | case OPT_g: |
df38ffef NB |
2008 | set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg); |
2009 | break; | |
2010 | ||
2011 | case OPT_gcoff: | |
2012 | set_debug_level (SDB_DEBUG, false, arg); | |
2013 | break; | |
2014 | ||
df38ffef NB |
2015 | case OPT_gdwarf_2: |
2016 | set_debug_level (DWARF2_DEBUG, false, arg); | |
2017 | break; | |
2018 | ||
2019 | case OPT_ggdb: | |
2020 | set_debug_level (NO_DEBUG, 2, arg); | |
2021 | break; | |
2022 | ||
2023 | case OPT_gstabs: | |
2024 | case OPT_gstabs_: | |
2025 | set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg); | |
2026 | break; | |
2027 | ||
2028 | case OPT_gvms: | |
2029 | set_debug_level (VMS_DEBUG, false, arg); | |
2030 | break; | |
2031 | ||
2032 | case OPT_gxcoff: | |
2033 | case OPT_gxcoff_: | |
2034 | set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg); | |
e01cc6dc NB |
2035 | break; |
2036 | ||
d185d268 NB |
2037 | case OPT_o: |
2038 | asm_file_name = arg; | |
2039 | break; | |
2040 | ||
d185d268 NB |
2041 | case OPT_pedantic_errors: |
2042 | flag_pedantic_errors = pedantic = 1; | |
2043 | break; | |
2044 | ||
efa1cdf0 ZD |
2045 | case OPT_floop_optimize: |
2046 | case OPT_frerun_loop_opt: | |
2047 | case OPT_fstrength_reduce: | |
e9033855 | 2048 | case OPT_ftree_store_copy_prop: |
aad89cd0 | 2049 | case OPT_fforce_addr: |
1353232d | 2050 | case OPT_ftree_salias: |
c0220ea4 | 2051 | /* These are no-ops, preserved for backward compatibility. */ |
efa1cdf0 ZD |
2052 | break; |
2053 | ||
50431bc4 ZD |
2054 | default: |
2055 | /* If the flag was handled in a standard way, assume the lack of | |
2056 | processing here is intentional. */ | |
0e61db61 NS |
2057 | gcc_assert (cl_options[scode].flag_var); |
2058 | break; | |
d7b42618 NB |
2059 | } |
2060 | ||
2061 | return 1; | |
2062 | } | |
903caebf NB |
2063 | |
2064 | /* Handle --param NAME=VALUE. */ | |
2065 | static void | |
2066 | handle_param (const char *carg) | |
2067 | { | |
2068 | char *equal, *arg; | |
2069 | int value; | |
2070 | ||
2071 | arg = xstrdup (carg); | |
2072 | equal = strchr (arg, '='); | |
2073 | if (!equal) | |
2074 | error ("%s: --param arguments should be of the form NAME=VALUE", arg); | |
2075 | else | |
2076 | { | |
2077 | value = integral_argument (equal + 1); | |
2078 | if (value == -1) | |
9e637a26 | 2079 | error ("invalid --param value %qs", equal + 1); |
903caebf NB |
2080 | else |
2081 | { | |
2082 | *equal = '\0'; | |
2083 | set_param_value (arg, value); | |
2084 | } | |
2085 | } | |
2086 | ||
2087 | free (arg); | |
2088 | } | |
2089 | ||
2090 | /* Handle -W and -Wextra. */ | |
2091 | static void | |
2092 | set_Wextra (int setting) | |
2093 | { | |
2094 | extra_warnings = setting; | |
903caebf NB |
2095 | |
2096 | /* We save the value of warn_uninitialized, since if they put | |
2097 | -Wuninitialized on the command line, we need to generate a | |
2098 | warning about not using it without also specifying -O. */ | |
2099 | if (setting == 0) | |
2100 | warn_uninitialized = 0; | |
2101 | else if (warn_uninitialized != 1) | |
2102 | warn_uninitialized = 2; | |
2103 | } | |
2104 | ||
79bedddc SR |
2105 | /* Used to set the level of strict aliasing warnings, |
2106 | when no level is specified (i.e., when -Wstrict-aliasing, and not | |
2107 | -Wstrict-aliasing=level was given). | |
2108 | ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified, | |
2109 | and 0 otherwise. After calling this function, wstrict_aliasing will be | |
2110 | set to the default value of -Wstrict_aliasing=level, currently 3. */ | |
2111 | void | |
2112 | set_Wstrict_aliasing (int onoff) | |
2113 | { | |
2114 | gcc_assert (onoff == 0 || onoff == 1); | |
2115 | if (onoff != 0) | |
2116 | warn_strict_aliasing = 3; | |
621b5ed6 RG |
2117 | else |
2118 | warn_strict_aliasing = 0; | |
79bedddc SR |
2119 | } |
2120 | ||
058de654 NB |
2121 | /* The following routines are useful in setting all the flags that |
2122 | -ffast-math and -fno-fast-math imply. */ | |
2123 | void | |
2124 | set_fast_math_flags (int set) | |
2125 | { | |
058de654 | 2126 | flag_unsafe_math_optimizations = set; |
c5edab65 | 2127 | set_unsafe_math_optimizations_flags (set); |
058de654 NB |
2128 | flag_finite_math_only = set; |
2129 | flag_errno_math = !set; | |
2130 | if (set) | |
039c3d42 RS |
2131 | { |
2132 | flag_signaling_nans = 0; | |
2133 | flag_rounding_math = 0; | |
c7463669 | 2134 | flag_cx_limited_range = 1; |
039c3d42 | 2135 | } |
058de654 NB |
2136 | } |
2137 | ||
a1a82611 RE |
2138 | /* When -funsafe-math-optimizations is set the following |
2139 | flags are set as well. */ | |
2140 | void | |
2141 | set_unsafe_math_optimizations_flags (int set) | |
2142 | { | |
c5edab65 EB |
2143 | flag_trapping_math = !set; |
2144 | flag_signed_zeros = !set; | |
a1a82611 | 2145 | flag_associative_math = set; |
c5edab65 | 2146 | flag_reciprocal_math = set; |
a1a82611 RE |
2147 | } |
2148 | ||
058de654 NB |
2149 | /* Return true iff flags are set as if -ffast-math. */ |
2150 | bool | |
2151 | fast_math_flags_set_p (void) | |
2152 | { | |
2153 | return (!flag_trapping_math | |
2154 | && flag_unsafe_math_optimizations | |
2155 | && flag_finite_math_only | |
db02da79 | 2156 | && !flag_signed_zeros |
058de654 NB |
2157 | && !flag_errno_math); |
2158 | } | |
cf03fd63 | 2159 | |
ab442df7 MM |
2160 | /* Return true iff flags are set as if -ffast-math but using the flags stored |
2161 | in the struct cl_optimization structure. */ | |
2162 | bool | |
2163 | fast_math_flags_struct_set_p (struct cl_optimization *opt) | |
2164 | { | |
2165 | return (!opt->flag_trapping_math | |
2166 | && opt->flag_unsafe_math_optimizations | |
2167 | && opt->flag_finite_math_only | |
2168 | && !opt->flag_signed_zeros | |
2169 | && !opt->flag_errno_math); | |
2170 | } | |
2171 | ||
df38ffef NB |
2172 | /* Handle a debug output -g switch. EXTENDED is true or false to support |
2173 | extended output (2 is special and means "-ggdb" was given). */ | |
2174 | static void | |
2175 | set_debug_level (enum debug_info_type type, int extended, const char *arg) | |
2176 | { | |
2177 | static bool type_explicit; | |
2178 | ||
2179 | use_gnu_debug_info_extensions = extended; | |
2180 | ||
2181 | if (type == NO_DEBUG) | |
2182 | { | |
2183 | if (write_symbols == NO_DEBUG) | |
2184 | { | |
2185 | write_symbols = PREFERRED_DEBUGGING_TYPE; | |
2186 | ||
2187 | if (extended == 2) | |
2188 | { | |
2189 | #ifdef DWARF2_DEBUGGING_INFO | |
2190 | write_symbols = DWARF2_DEBUG; | |
2191 | #elif defined DBX_DEBUGGING_INFO | |
2192 | write_symbols = DBX_DEBUG; | |
2193 | #endif | |
2194 | } | |
2195 | ||
2196 | if (write_symbols == NO_DEBUG) | |
d4ee4d25 | 2197 | warning (0, "target system does not support debug output"); |
df38ffef NB |
2198 | } |
2199 | } | |
2200 | else | |
2201 | { | |
2202 | /* Does it conflict with an already selected type? */ | |
2203 | if (type_explicit && write_symbols != NO_DEBUG && type != write_symbols) | |
2204 | error ("debug format \"%s\" conflicts with prior selection", | |
2205 | debug_type_names[type]); | |
2206 | write_symbols = type; | |
2207 | type_explicit = true; | |
2208 | } | |
2209 | ||
2210 | /* A debug flag without a level defaults to level 2. */ | |
2211 | if (*arg == '\0') | |
2212 | { | |
2213 | if (!debug_info_level) | |
2214 | debug_info_level = 2; | |
2215 | } | |
2216 | else | |
2217 | { | |
2218 | debug_info_level = integral_argument (arg); | |
2219 | if (debug_info_level == (unsigned int) -1) | |
2220 | error ("unrecognised debug output level \"%s\"", arg); | |
2221 | else if (debug_info_level > 3) | |
2222 | error ("debug output level %s is too high", arg); | |
2223 | } | |
2224 | } | |
2225 | ||
75685792 RS |
2226 | /* Return 1 if OPTION is enabled, 0 if it is disabled, or -1 if it isn't |
2227 | a simple on-off switch. */ | |
2228 | ||
2229 | int | |
ccf08a6e | 2230 | option_enabled (int opt_idx) |
75685792 | 2231 | { |
ccf08a6e | 2232 | const struct cl_option *option = &(cl_options[opt_idx]); |
c662432e | 2233 | |
75685792 | 2234 | if (option->flag_var) |
55bea00a | 2235 | switch (option->var_type) |
75685792 RS |
2236 | { |
2237 | case CLVC_BOOLEAN: | |
55bea00a | 2238 | return *(int *) option->flag_var != 0; |
75685792 RS |
2239 | |
2240 | case CLVC_EQUAL: | |
55bea00a | 2241 | return *(int *) option->flag_var == option->var_value; |
75685792 RS |
2242 | |
2243 | case CLVC_BIT_CLEAR: | |
55bea00a | 2244 | return (*(int *) option->flag_var & option->var_value) == 0; |
75685792 RS |
2245 | |
2246 | case CLVC_BIT_SET: | |
55bea00a RS |
2247 | return (*(int *) option->flag_var & option->var_value) != 0; |
2248 | ||
2249 | case CLVC_STRING: | |
2250 | break; | |
75685792 RS |
2251 | } |
2252 | return -1; | |
2253 | } | |
5c60a017 RS |
2254 | |
2255 | /* Fill STATE with the current state of option OPTION. Return true if | |
2256 | there is some state to store. */ | |
2257 | ||
2258 | bool | |
2259 | get_option_state (int option, struct cl_option_state *state) | |
2260 | { | |
2261 | if (cl_options[option].flag_var == 0) | |
2262 | return false; | |
2263 | ||
2264 | switch (cl_options[option].var_type) | |
2265 | { | |
2266 | case CLVC_BOOLEAN: | |
2267 | case CLVC_EQUAL: | |
2268 | state->data = cl_options[option].flag_var; | |
2269 | state->size = sizeof (int); | |
2270 | break; | |
2271 | ||
2272 | case CLVC_BIT_CLEAR: | |
2273 | case CLVC_BIT_SET: | |
2274 | state->ch = option_enabled (option); | |
2275 | state->data = &state->ch; | |
2276 | state->size = 1; | |
2277 | break; | |
2278 | ||
2279 | case CLVC_STRING: | |
2280 | state->data = *(const char **) cl_options[option].flag_var; | |
2281 | if (state->data == 0) | |
2282 | state->data = ""; | |
d3bfe4de | 2283 | state->size = strlen ((const char *) state->data) + 1; |
5c60a017 RS |
2284 | break; |
2285 | } | |
2286 | return true; | |
2287 | } | |
dc90f45b MLI |
2288 | |
2289 | /* Enable a warning option as an error. This is used by -Werror= and | |
2290 | also by legacy Werror-implicit-function-declaration. */ | |
2291 | ||
2292 | void | |
2293 | enable_warning_as_error (const char *arg, int value, unsigned int lang_mask) | |
2294 | { | |
2295 | char *new_option; | |
2296 | int option_index; | |
2297 | ||
2298 | new_option = XNEWVEC (char, strlen (arg) + 2); | |
2299 | new_option[0] = 'W'; | |
2300 | strcpy (new_option + 1, arg); | |
2301 | option_index = find_opt (new_option, lang_mask); | |
2302 | if (option_index == N_OPTS) | |
2303 | { | |
2304 | error ("-Werror=%s: No option -%s", arg, new_option); | |
2305 | } | |
2306 | else | |
2307 | { | |
2308 | int kind = value ? DK_ERROR : DK_WARNING; | |
2309 | diagnostic_classify_diagnostic (global_dc, option_index, kind); | |
2310 | ||
2311 | /* -Werror=foo implies -Wfoo. */ | |
2312 | if (cl_options[option_index].var_type == CLVC_BOOLEAN | |
2313 | && cl_options[option_index].flag_var | |
2314 | && kind == DK_ERROR) | |
2315 | *(int *) cl_options[option_index].flag_var = 1; | |
2316 | } | |
2317 | free (new_option); | |
2318 | } |