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5457b645 | 1 | /* Command line option handling. |
86482d6b | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
981eb798 | 3 | Free Software Foundation, Inc. |
5457b645 | 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 | |
8c4c00c1 | 10 | Software Foundation; either version 3, or (at your option) any later |
5457b645 | 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 | |
8c4c00c1 | 19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
5457b645 | 21 | |
22 | #include "config.h" | |
23 | #include "system.h" | |
53b8e5c1 | 24 | #include "intl.h" |
5457b645 | 25 | #include "coretypes.h" |
26 | #include "tm.h" | |
27 | #include "tree.h" | |
941a4893 | 28 | #include "rtl.h" |
4852b829 | 29 | #include "expr.h" |
941a4893 | 30 | #include "ggc.h" |
31 | #include "output.h" | |
5457b645 | 32 | #include "langhooks.h" |
33 | #include "opts.h" | |
3272db82 | 34 | #include "options.h" |
35 | #include "flags.h" | |
36 | #include "toplev.h" | |
da3b1bab | 37 | #include "params.h" |
1e06725a | 38 | #include "diagnostic.h" |
f5d971c5 | 39 | #include "tm_p.h" /* For OPTIMIZATION_OPTIONS. */ |
00f1bbdb | 40 | #include "insn-attr.h" /* For INSN_SCHEDULING. */ |
bfb835d3 | 41 | #include "target.h" |
77fce4cd | 42 | #include "tree-pass.h" |
3072d30e | 43 | #include "dbgcnt.h" |
5f1f2de5 | 44 | #include "debug.h" |
5457b645 | 45 | |
e690b385 | 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 | ||
e1ab7874 | 50 | /* Same for selective scheduling. */ |
51 | bool sel_sched_switch_set; | |
52 | ||
e690b385 | 53 | /* True if we should exit after parsing options. */ |
54 | bool exit_after_options; | |
55 | ||
6f2f567f | 56 | /* Print various extra warnings. -W/-Wextra. */ |
57 | bool extra_warnings; | |
58 | ||
6f2f567f | 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 | ||
6fdade09 | 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 | ||
b0e56fb1 | 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 | ||
0e4744ac | 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 | |
4a7e4fcc | 93 | of the current compilation unit. This matching emits minimal |
0e4744ac | 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 | ||
b0e56fb1 | 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 | ||
b212f378 | 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 | ||
344c9292 | 340 | /* What to print when a switch has no documentation. */ |
86895a67 | 341 | #ifdef ENABLE_CHECKING |
344c9292 | 342 | static const char undocumented_msg[] = N_("This switch lacks documentation"); |
86895a67 | 343 | #else |
344 | static const char undocumented_msg[] = ""; | |
345 | #endif | |
344c9292 | 346 | |
7dea76ba | 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; | |
11b73810 | 353 | static bool flag_inline_functions_set, flag_ipa_cp_set, flag_ipa_cp_clone_set; |
7baffbd3 | 354 | static bool flag_predictive_commoning_set, flag_unswitch_loops_set, flag_gcse_after_reload_set; |
7dea76ba | 355 | |
a95c0776 | 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 | ||
ddb48b82 | 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 | ||
7981458e | 371 | /* Input file names. */ |
dcfa26d9 | 372 | const char **in_fnames; |
373 | unsigned num_in_fnames; | |
374 | ||
76f02516 | 375 | static int common_handle_option (size_t scode, const char *arg, int value, |
376 | unsigned int lang_mask); | |
da3b1bab | 377 | static void handle_param (const char *); |
378 | static void set_Wextra (int); | |
4838a8b6 | 379 | static unsigned int handle_option (const char **argv, unsigned int lang_mask); |
9cf6679e | 380 | static char *write_langs (unsigned int lang_mask); |
381 | static void complain_wrong_lang (const char *, const struct cl_option *, | |
382 | unsigned int lang_mask); | |
4838a8b6 | 383 | static void handle_options (unsigned int, const char **, unsigned int); |
b0e56fb1 | 384 | static void set_debug_level (enum debug_info_type type, int extended, |
385 | const char *arg); | |
5457b645 | 386 | |
6f2f567f | 387 | /* If ARG is a non-negative integer made up solely of digits, return its |
837277ab | 388 | value, otherwise return -1. */ |
389 | static int | |
390 | integral_argument (const char *arg) | |
391 | { | |
392 | const char *p = arg; | |
393 | ||
394 | while (*p && ISDIGIT (*p)) | |
395 | p++; | |
396 | ||
397 | if (*p == '\0') | |
398 | return atoi (arg); | |
399 | ||
400 | return -1; | |
401 | } | |
402 | ||
9cf6679e | 403 | /* Return a malloced slash-separated list of languages in MASK. */ |
404 | static char * | |
405 | write_langs (unsigned int mask) | |
406 | { | |
407 | unsigned int n = 0, len = 0; | |
408 | const char *lang_name; | |
409 | char *result; | |
410 | ||
411 | for (n = 0; (lang_name = lang_names[n]) != 0; n++) | |
412 | if (mask & (1U << n)) | |
413 | len += strlen (lang_name) + 1; | |
414 | ||
4c36ffe6 | 415 | result = XNEWVEC (char, len); |
9cf6679e | 416 | len = 0; |
417 | for (n = 0; (lang_name = lang_names[n]) != 0; n++) | |
418 | if (mask & (1U << n)) | |
419 | { | |
420 | if (len) | |
421 | result[len++] = '/'; | |
422 | strcpy (result + len, lang_name); | |
423 | len += strlen (lang_name); | |
424 | } | |
425 | ||
426 | result[len] = 0; | |
427 | ||
428 | return result; | |
429 | } | |
430 | ||
431 | /* Complain that switch OPT_INDEX does not apply to this front end. */ | |
432 | static void | |
433 | complain_wrong_lang (const char *text, const struct cl_option *option, | |
434 | unsigned int lang_mask) | |
435 | { | |
436 | char *ok_langs, *bad_lang; | |
437 | ||
438 | ok_langs = write_langs (option->flags); | |
439 | bad_lang = write_langs (lang_mask); | |
440 | ||
441 | /* Eventually this should become a hard error IMO. */ | |
c3ceba8e | 442 | warning (0, "command line option \"%s\" is valid for %s but not for %s", |
9cf6679e | 443 | text, ok_langs, bad_lang); |
444 | ||
445 | free (ok_langs); | |
446 | free (bad_lang); | |
447 | } | |
448 | ||
ddb48b82 | 449 | /* Buffer the unknown option described by the string OPT. Currently, |
450 | we only complain about unknown -Wno-* options if they may have | |
02b841e2 | 451 | prevented a diagnostic. Otherwise, we just ignore them. |
452 | Note that if we do complain, it is only as a warning, not an error; | |
453 | passing the compiler an unrecognised -Wno-* option should never | |
454 | change whether the compilation succeeds or fails. */ | |
ddb48b82 | 455 | |
02b841e2 | 456 | static void postpone_unknown_option_warning(const char *opt) |
ddb48b82 | 457 | { |
458 | VEC_safe_push (const_char_p, heap, ignored_options, opt); | |
459 | } | |
460 | ||
02b841e2 | 461 | /* Produce a warning for each option previously buffered. */ |
ddb48b82 | 462 | |
463 | void print_ignored_options (void) | |
464 | { | |
465 | location_t saved_loc = input_location; | |
466 | ||
467 | input_location = 0; | |
468 | ||
469 | while (!VEC_empty (const_char_p, ignored_options)) | |
470 | { | |
471 | const char *opt; | |
472 | opt = VEC_pop (const_char_p, ignored_options); | |
02b841e2 | 473 | warning (0, "unrecognized command line option \"%s\"", opt); |
ddb48b82 | 474 | } |
475 | ||
476 | input_location = saved_loc; | |
477 | } | |
478 | ||
9cf6679e | 479 | /* Handle the switch beginning at ARGV for the language indicated by |
480 | LANG_MASK. Returns the number of switches consumed. */ | |
481 | static unsigned int | |
4838a8b6 | 482 | handle_option (const char **argv, unsigned int lang_mask) |
5457b645 | 483 | { |
484 | size_t opt_index; | |
485 | const char *opt, *arg = 0; | |
486 | char *dup = 0; | |
837277ab | 487 | int value = 1; |
9cf6679e | 488 | unsigned int result = 0; |
5457b645 | 489 | const struct cl_option *option; |
490 | ||
5457b645 | 491 | opt = argv[0]; |
492 | ||
ff05e09e | 493 | opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); |
494 | if (opt_index == cl_options_count | |
495 | && (opt[1] == 'W' || opt[1] == 'f' || opt[1] == 'm') | |
76bf7746 | 496 | && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-') |
5457b645 | 497 | { |
ff05e09e | 498 | /* Drop the "no-" from negative switches. */ |
76bf7746 | 499 | size_t len = strlen (opt) - 3; |
500 | ||
4c36ffe6 | 501 | dup = XNEWVEC (char, len + 1); |
76bf7746 | 502 | dup[0] = '-'; |
503 | dup[1] = opt[1]; | |
504 | memcpy (dup + 2, opt + 5, len - 2 + 1); | |
505 | opt = dup; | |
506 | value = 0; | |
ff05e09e | 507 | opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET); |
88d4fcc4 | 508 | if (opt_index == cl_options_count && opt[1] == 'W') |
ddb48b82 | 509 | { |
02b841e2 | 510 | /* We don't generate warnings for unknown -Wno-* options |
ddb48b82 | 511 | unless we issue diagnostics. */ |
02b841e2 | 512 | postpone_unknown_option_warning (argv[0]); |
ddb48b82 | 513 | result = 1; |
514 | goto done; | |
515 | } | |
5457b645 | 516 | } |
5457b645 | 517 | |
76bf7746 | 518 | if (opt_index == cl_options_count) |
6c3bc3be | 519 | goto done; |
5457b645 | 520 | |
76bf7746 | 521 | option = &cl_options[opt_index]; |
5457b645 | 522 | |
76bf7746 | 523 | /* Reject negative form of switches that don't take negatives as |
524 | unrecognized. */ | |
525 | if (!value && (option->flags & CL_REJECT_NEGATIVE)) | |
526 | goto done; | |
5457b645 | 527 | |
76bf7746 | 528 | /* We've recognized this switch. */ |
529 | result = 1; | |
5457b645 | 530 | |
5c5ccba2 | 531 | /* Check to see if the option is disabled for this configuration. */ |
532 | if (option->flags & CL_DISABLED) | |
533 | { | |
534 | error ("command line option %qs" | |
535 | " is not supported by this configuration", opt); | |
536 | goto done; | |
537 | } | |
538 | ||
76bf7746 | 539 | /* Sort out any argument the switch takes. */ |
540 | if (option->flags & CL_JOINED) | |
541 | { | |
542 | /* Have arg point to the original switch. This is because | |
543 | some code, such as disable_builtin_function, expects its | |
544 | argument to be persistent until the program exits. */ | |
545 | arg = argv[0] + cl_options[opt_index].opt_len + 1; | |
546 | if (!value) | |
547 | arg += strlen ("no-"); | |
548 | ||
549 | if (*arg == '\0' && !(option->flags & CL_MISSING_OK)) | |
5457b645 | 550 | { |
76bf7746 | 551 | if (option->flags & CL_SEPARATE) |
5457b645 | 552 | { |
76bf7746 | 553 | arg = argv[1]; |
554 | result = 2; | |
5457b645 | 555 | } |
76bf7746 | 556 | else |
557 | /* Missing argument. */ | |
558 | arg = NULL; | |
837277ab | 559 | } |
76bf7746 | 560 | } |
561 | else if (option->flags & CL_SEPARATE) | |
562 | { | |
563 | arg = argv[1]; | |
564 | result = 2; | |
565 | } | |
5457b645 | 566 | |
76bf7746 | 567 | /* Now we've swallowed any potential argument, complain if this |
568 | is a switch for a different front end. */ | |
ff05e09e | 569 | if (!(option->flags & (lang_mask | CL_COMMON | CL_TARGET))) |
76bf7746 | 570 | { |
571 | complain_wrong_lang (argv[0], option, lang_mask); | |
572 | goto done; | |
573 | } | |
b9fc964a | 574 | else if ((option->flags & CL_TARGET) |
575 | && (option->flags & CL_LANG_ALL) | |
576 | && !(option->flags & lang_mask)) | |
577 | { | |
578 | /* Complain for target flag language mismatches if any languages | |
579 | are specified. */ | |
580 | complain_wrong_lang (argv[0], option, lang_mask); | |
581 | goto done; | |
582 | } | |
9cf6679e | 583 | |
76bf7746 | 584 | if (arg == NULL && (option->flags & (CL_JOINED | CL_SEPARATE))) |
585 | { | |
dc24ddbd | 586 | if (!lang_hooks.missing_argument (opt, opt_index)) |
76bf7746 | 587 | error ("missing argument to \"%s\"", opt); |
588 | goto done; | |
589 | } | |
29689179 | 590 | |
76bf7746 | 591 | /* If the switch takes an integer, convert it. */ |
592 | if (arg && (option->flags & CL_UINTEGER)) | |
593 | { | |
594 | value = integral_argument (arg); | |
595 | if (value == -1) | |
837277ab | 596 | { |
53b8e5c1 | 597 | error ("argument to \"%s\" should be a non-negative integer", |
76bf7746 | 598 | option->opt_text); |
599 | goto done; | |
5457b645 | 600 | } |
76bf7746 | 601 | } |
5457b645 | 602 | |
2e9da478 | 603 | if (option->flag_var) |
0fe44c73 | 604 | switch (option->var_type) |
ff05e09e | 605 | { |
606 | case CLVC_BOOLEAN: | |
0fe44c73 | 607 | *(int *) option->flag_var = value; |
ff05e09e | 608 | break; |
609 | ||
610 | case CLVC_EQUAL: | |
0fe44c73 | 611 | *(int *) option->flag_var = (value |
612 | ? option->var_value | |
613 | : !option->var_value); | |
ff05e09e | 614 | break; |
615 | ||
616 | case CLVC_BIT_CLEAR: | |
617 | case CLVC_BIT_SET: | |
0fe44c73 | 618 | if ((value != 0) == (option->var_type == CLVC_BIT_SET)) |
619 | *(int *) option->flag_var |= option->var_value; | |
ff05e09e | 620 | else |
0fe44c73 | 621 | *(int *) option->flag_var &= ~option->var_value; |
ff05e09e | 622 | if (option->flag_var == &target_flags) |
623 | target_flags_explicit |= option->var_value; | |
624 | break; | |
0fe44c73 | 625 | |
626 | case CLVC_STRING: | |
627 | *(const char **) option->flag_var = arg; | |
628 | break; | |
ff05e09e | 629 | } |
87c75316 | 630 | |
76bf7746 | 631 | if (option->flags & lang_mask) |
dc24ddbd | 632 | if (lang_hooks.handle_option (opt_index, arg, value) == 0) |
76bf7746 | 633 | result = 0; |
3272db82 | 634 | |
76bf7746 | 635 | if (result && (option->flags & CL_COMMON)) |
76f02516 | 636 | if (common_handle_option (opt_index, arg, value, lang_mask) == 0) |
76bf7746 | 637 | result = 0; |
5457b645 | 638 | |
ff05e09e | 639 | if (result && (option->flags & CL_TARGET)) |
640 | if (!targetm.handle_option (opt_index, arg, value)) | |
641 | result = 0; | |
642 | ||
5457b645 | 643 | done: |
644 | if (dup) | |
645 | free (dup); | |
646 | return result; | |
647 | } | |
3272db82 | 648 | |
06ac2f3d | 649 | /* Handle FILENAME from the command line. */ |
650 | static void | |
651 | add_input_filename (const char *filename) | |
652 | { | |
653 | num_in_fnames++; | |
4077bf7a | 654 | in_fnames = XRESIZEVEC (const char *, in_fnames, num_in_fnames); |
06ac2f3d | 655 | in_fnames[num_in_fnames - 1] = filename; |
656 | } | |
657 | ||
b5f30e7c | 658 | /* Add comma-separated strings to a char_p vector. */ |
a95c0776 | 659 | |
660 | static void | |
b5f30e7c | 661 | add_comma_separated_to_vector (VEC(char_p,heap) **pvec, const char* arg) |
a95c0776 | 662 | { |
663 | char *tmp; | |
664 | char *r; | |
665 | char *w; | |
666 | char *token_start; | |
667 | ||
668 | /* We never free this string. */ | |
669 | tmp = xstrdup (arg); | |
670 | ||
671 | r = tmp; | |
672 | w = tmp; | |
673 | token_start = tmp; | |
674 | ||
675 | while (*r != '\0') | |
676 | { | |
677 | if (*r == ',') | |
678 | { | |
679 | *w++ = '\0'; | |
680 | ++r; | |
681 | VEC_safe_push (char_p, heap, *pvec, token_start); | |
682 | token_start = w; | |
683 | } | |
684 | if (*r == '\\' && r[1] == ',') | |
685 | { | |
686 | *w++ = ','; | |
687 | r += 2; | |
688 | } | |
689 | else | |
690 | *w++ = *r++; | |
691 | } | |
692 | if (*token_start != '\0') | |
693 | VEC_safe_push (char_p, heap, *pvec, token_start); | |
694 | } | |
695 | ||
696 | /* Return whether we should exclude FNDECL from instrumentation. */ | |
697 | ||
698 | bool | |
699 | flag_instrument_functions_exclude_p (tree fndecl) | |
700 | { | |
701 | if (VEC_length (char_p, flag_instrument_functions_exclude_functions) > 0) | |
702 | { | |
703 | const char *name; | |
704 | int i; | |
705 | char *s; | |
706 | ||
707 | name = lang_hooks.decl_printable_name (fndecl, 0); | |
708 | for (i = 0; | |
709 | VEC_iterate (char_p, flag_instrument_functions_exclude_functions, | |
710 | i, s); | |
711 | ++i) | |
712 | { | |
713 | if (strstr (name, s) != NULL) | |
714 | return true; | |
715 | } | |
716 | } | |
717 | ||
718 | if (VEC_length (char_p, flag_instrument_functions_exclude_files) > 0) | |
719 | { | |
720 | const char *name; | |
721 | int i; | |
722 | char *s; | |
723 | ||
724 | name = DECL_SOURCE_FILE (fndecl); | |
725 | for (i = 0; | |
726 | VEC_iterate (char_p, flag_instrument_functions_exclude_files, i, s); | |
727 | ++i) | |
728 | { | |
729 | if (strstr (name, s) != NULL) | |
730 | return true; | |
731 | } | |
732 | } | |
733 | ||
734 | return false; | |
735 | } | |
736 | ||
b5f30e7c | 737 | |
9cf6679e | 738 | /* Decode and handle the vector of command line options. LANG_MASK |
739 | contains has a single bit set representing the current | |
740 | language. */ | |
f5d971c5 | 741 | static void |
4838a8b6 | 742 | handle_options (unsigned int argc, const char **argv, unsigned int lang_mask) |
9cf6679e | 743 | { |
744 | unsigned int n, i; | |
745 | ||
746 | for (i = 1; i < argc; i += n) | |
747 | { | |
76bf7746 | 748 | const char *opt = argv[i]; |
749 | ||
750 | /* Interpret "-" or a non-switch as a file name. */ | |
751 | if (opt[0] != '-' || opt[1] == '\0') | |
752 | { | |
d732fcf0 | 753 | if (main_input_filename == NULL) |
0e4744ac | 754 | { |
86895a67 | 755 | main_input_filename = opt; |
0e4744ac | 756 | main_input_baselength |
757 | = base_of_path (main_input_filename, &main_input_basename); | |
758 | } | |
dcfa26d9 | 759 | add_input_filename (opt); |
76bf7746 | 760 | n = 1; |
761 | continue; | |
762 | } | |
763 | ||
9cf6679e | 764 | n = handle_option (argv + i, lang_mask); |
765 | ||
766 | if (!n) | |
767 | { | |
768 | n = 1; | |
76bf7746 | 769 | error ("unrecognized command line option \"%s\"", opt); |
9cf6679e | 770 | } |
771 | } | |
772 | } | |
773 | ||
f5d971c5 | 774 | /* Parse command line options and set default flag values. Do minimal |
775 | options processing. */ | |
776 | void | |
4838a8b6 | 777 | decode_options (unsigned int argc, const char **argv) |
f5d971c5 | 778 | { |
46f8e3b0 | 779 | static bool first_time_p = true; |
46f8e3b0 | 780 | static int initial_min_crossjump_insns; |
781 | static int initial_max_fields_for_field_sensitive; | |
86482d6b | 782 | static int initial_loop_invariant_max_bbs_in_loop; |
46f8e3b0 | 783 | static unsigned int initial_lang_mask; |
f5d971c5 | 784 | |
46f8e3b0 | 785 | unsigned int i, lang_mask; |
786 | int opt1; | |
787 | int opt2; | |
788 | int opt3; | |
789 | int opt1_max; | |
f5d971c5 | 790 | |
46f8e3b0 | 791 | if (first_time_p) |
792 | { | |
793 | /* Perform language-specific options initialization. */ | |
794 | initial_lang_mask = lang_mask = lang_hooks.init_options (argc, argv); | |
795 | ||
796 | lang_hooks.initialize_diagnostics (global_dc); | |
797 | ||
798 | /* Save initial values of parameters we reset. */ | |
46f8e3b0 | 799 | initial_min_crossjump_insns |
800 | = compiler_params[PARAM_MIN_CROSSJUMP_INSNS].value; | |
801 | initial_max_fields_for_field_sensitive | |
802 | = compiler_params[PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE].value; | |
86482d6b | 803 | initial_loop_invariant_max_bbs_in_loop |
804 | = compiler_params[PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP].value; | |
46f8e3b0 | 805 | } |
806 | else | |
807 | lang_mask = initial_lang_mask; | |
f63da8d3 | 808 | |
f5d971c5 | 809 | /* Scan to see what optimization level has been specified. That will |
810 | determine the default value of many flags. */ | |
811 | for (i = 1; i < argc; i++) | |
812 | { | |
813 | if (!strcmp (argv[i], "-O")) | |
814 | { | |
815 | optimize = 1; | |
816 | optimize_size = 0; | |
817 | } | |
818 | else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
819 | { | |
820 | /* Handle -Os, -O2, -O3, -O69, ... */ | |
4838a8b6 | 821 | const char *p = &argv[i][2]; |
f5d971c5 | 822 | |
823 | if ((p[0] == 's') && (p[1] == 0)) | |
824 | { | |
825 | optimize_size = 1; | |
826 | ||
827 | /* Optimizing for size forces optimize to be 2. */ | |
828 | optimize = 2; | |
829 | } | |
830 | else | |
831 | { | |
832 | const int optimize_val = read_integral_parameter (p, p - 2, -1); | |
833 | if (optimize_val != -1) | |
834 | { | |
835 | optimize = optimize_val; | |
836 | optimize_size = 0; | |
837 | } | |
838 | } | |
839 | } | |
840 | } | |
6329636b | 841 | |
14792f4e | 842 | /* Use priority coloring if cover classes is not defined for the |
843 | target. */ | |
844 | if (targetm.ira_cover_classes == NULL) | |
845 | flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
47dd2e78 | 846 | |
46f8e3b0 | 847 | /* -O1 optimizations. */ |
848 | opt1 = (optimize >= 1); | |
849 | flag_defer_pop = opt1; | |
f5d971c5 | 850 | #ifdef DELAY_SLOTS |
46f8e3b0 | 851 | flag_delayed_branch = opt1; |
f5d971c5 | 852 | #endif |
853 | #ifdef CAN_DEBUG_WITHOUT_FP | |
46f8e3b0 | 854 | flag_omit_frame_pointer = opt1; |
f5d971c5 | 855 | #endif |
46f8e3b0 | 856 | flag_guess_branch_prob = opt1; |
857 | flag_cprop_registers = opt1; | |
858 | flag_if_conversion = opt1; | |
859 | flag_if_conversion2 = opt1; | |
860 | flag_ipa_pure_const = opt1; | |
861 | flag_ipa_reference = opt1; | |
cd8171dd | 862 | flag_merge_constants = opt1; |
46f8e3b0 | 863 | flag_split_wide_types = opt1; |
864 | flag_tree_ccp = opt1; | |
865 | flag_tree_dce = opt1; | |
866 | flag_tree_dom = opt1; | |
867 | flag_tree_dse = opt1; | |
868 | flag_tree_ter = opt1; | |
869 | flag_tree_sra = opt1; | |
870 | flag_tree_copyrename = opt1; | |
871 | flag_tree_fre = opt1; | |
872 | flag_tree_copy_prop = opt1; | |
873 | flag_tree_sink = opt1; | |
874 | flag_tree_ch = opt1; | |
875 | ||
876 | /* -O2 optimizations. */ | |
877 | opt2 = (optimize >= 2); | |
878 | flag_inline_small_functions = opt2; | |
f8daee9b | 879 | flag_indirect_inlining = opt2; |
46f8e3b0 | 880 | flag_thread_jumps = opt2; |
881 | flag_crossjumping = opt2; | |
882 | flag_optimize_sibling_calls = opt2; | |
883 | flag_forward_propagate = opt2; | |
884 | flag_cse_follow_jumps = opt2; | |
885 | flag_gcse = opt2; | |
886 | flag_expensive_optimizations = opt2; | |
887 | flag_rerun_cse_after_loop = opt2; | |
888 | flag_caller_saves = opt2; | |
889 | flag_peephole2 = opt2; | |
f5d971c5 | 890 | #ifdef INSN_SCHEDULING |
46f8e3b0 | 891 | flag_schedule_insns = opt2; |
892 | flag_schedule_insns_after_reload = opt2; | |
f5d971c5 | 893 | #endif |
46f8e3b0 | 894 | flag_regmove = opt2; |
895 | flag_strict_aliasing = opt2; | |
896 | flag_strict_overflow = opt2; | |
897 | flag_delete_null_pointer_checks = opt2; | |
898 | flag_reorder_blocks = opt2; | |
899 | flag_reorder_functions = opt2; | |
46f8e3b0 | 900 | flag_tree_vrp = opt2; |
901 | flag_tree_builtin_call_dce = opt2; | |
902 | flag_tree_pre = opt2; | |
4612996b | 903 | flag_tree_switch_conversion = 1; |
904 | flag_ipa_cp = opt2; | |
523a88b0 | 905 | |
46f8e3b0 | 906 | /* Track fields in field-sensitive alias analysis. */ |
907 | set_param_value ("max-fields-for-field-sensitive", | |
908 | (opt2) ? 100 : initial_max_fields_for_field_sensitive); | |
c227f8de | 909 | |
86482d6b | 910 | /* For -O1 only do loop invariant motion for very small loops. */ |
911 | set_param_value ("loop-invariant-max-bbs-in-loop", | |
912 | (opt2) ? initial_loop_invariant_max_bbs_in_loop : 1000); | |
913 | ||
46f8e3b0 | 914 | /* -O3 optimizations. */ |
915 | opt3 = (optimize >= 3); | |
916 | flag_predictive_commoning = opt3; | |
917 | flag_inline_functions = opt3; | |
918 | flag_unswitch_loops = opt3; | |
919 | flag_gcse_after_reload = opt3; | |
920 | flag_tree_vectorize = opt3; | |
4612996b | 921 | flag_ipa_cp_clone = opt3; |
922 | if (flag_ipa_cp_clone) | |
923 | flag_ipa_cp = 1; | |
46f8e3b0 | 924 | |
46f8e3b0 | 925 | /* Just -O1/-O0 optimizations. */ |
926 | opt1_max = (optimize <= 1); | |
927 | align_loops = opt1_max; | |
928 | align_jumps = opt1_max; | |
929 | align_labels = opt1_max; | |
930 | align_functions = opt1_max; | |
931 | ||
932 | if (optimize_size) | |
f5d971c5 | 933 | { |
46f8e3b0 | 934 | /* Inlining of functions reducing size is a good idea regardless of them |
935 | being declared inline. */ | |
936 | flag_inline_functions = 1; | |
937 | ||
46f8e3b0 | 938 | /* Basic optimization options. */ |
939 | optimize_size = 1; | |
940 | if (optimize > 2) | |
941 | optimize = 2; | |
9eb0191e | 942 | |
943 | /* We want to crossjump as much as possible. */ | |
944 | set_param_value ("min-crossjump-insns", 1); | |
8ba44f35 | 945 | } |
46f8e3b0 | 946 | else |
947 | set_param_value ("min-crossjump-insns", initial_min_crossjump_insns); | |
8ba44f35 | 948 | |
46f8e3b0 | 949 | if (first_time_p) |
950 | { | |
951 | /* Initialize whether `char' is signed. */ | |
952 | flag_signed_char = DEFAULT_SIGNED_CHAR; | |
953 | /* Set this to a special "uninitialized" value. The actual default is | |
954 | set after target options have been processed. */ | |
955 | flag_short_enums = 2; | |
956 | ||
957 | /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can | |
958 | modify it. */ | |
959 | target_flags = targetm.default_target_flags; | |
960 | ||
961 | /* Some targets have ABI-specified unwind tables. */ | |
962 | flag_unwind_tables = targetm.unwind_tables_default; | |
963 | } | |
f5d971c5 | 964 | |
965 | #ifdef OPTIMIZATION_OPTIONS | |
966 | /* Allow default optimizations to be specified on a per-machine basis. */ | |
967 | OPTIMIZATION_OPTIONS (optimize, optimize_size); | |
968 | #endif | |
969 | ||
970 | handle_options (argc, argv, lang_mask); | |
971 | ||
91bfa5c6 | 972 | /* Handle related options for unit-at-a-time, toplevel-reorder, and |
973 | section-anchors. */ | |
cd8171dd | 974 | if (!flag_unit_at_a_time) |
975 | { | |
91bfa5c6 | 976 | if (flag_section_anchors == 1) |
977 | error ("Section anchors must be disabled when unit-at-a-time " | |
978 | "is disabled."); | |
cd8171dd | 979 | flag_section_anchors = 0; |
91bfa5c6 | 980 | if (flag_toplevel_reorder == 1) |
981 | error ("Toplevel reorder must be disabled when unit-at-a-time " | |
982 | "is disabled."); | |
cd8171dd | 983 | flag_toplevel_reorder = 0; |
984 | } | |
a227c9ef | 985 | /* Unless the user has asked for section anchors, we disable toplevel |
986 | reordering at -O0 to disable transformations that might be surprising | |
987 | to end users and to get -fno-toplevel-reorder tested. */ | |
988 | if (!optimize && flag_toplevel_reorder == 2 && flag_section_anchors != 1) | |
91bfa5c6 | 989 | { |
a227c9ef | 990 | flag_toplevel_reorder = 0; |
991 | flag_section_anchors = 0; | |
91bfa5c6 | 992 | } |
993 | if (!flag_toplevel_reorder) | |
cd8171dd | 994 | { |
995 | if (flag_section_anchors == 1) | |
91bfa5c6 | 996 | error ("section anchors must be disabled when toplevel reorder" |
997 | " is disabled"); | |
cd8171dd | 998 | flag_section_anchors = 0; |
999 | } | |
1000 | ||
46f8e3b0 | 1001 | if (first_time_p) |
1002 | { | |
1003 | if (flag_pie) | |
1004 | flag_pic = flag_pie; | |
1005 | if (flag_pic && !flag_pie) | |
1006 | flag_shlib = 1; | |
46f8e3b0 | 1007 | } |
f5d971c5 | 1008 | |
f5d971c5 | 1009 | if (optimize == 0) |
1010 | { | |
1011 | /* Inlining does not work if not optimizing, | |
1012 | so force it not to be done. */ | |
f5d971c5 | 1013 | warn_inline = 0; |
1c2f0012 | 1014 | flag_no_inline = 1; |
f5d971c5 | 1015 | } |
1016 | ||
4f18499c | 1017 | /* The optimization to partition hot and cold basic blocks into separate |
1018 | sections of the .o and executable files does not work (currently) | |
8de492c3 | 1019 | with exception handling. This is because there is no support for |
1020 | generating unwind info. If flag_exceptions is turned on we need to | |
4f18499c | 1021 | turn off the partitioning optimization. */ |
1022 | ||
1023 | if (flag_exceptions && flag_reorder_blocks_and_partition) | |
1024 | { | |
5bcc316e | 1025 | inform (input_location, |
1026 | "-freorder-blocks-and-partition does not work with exceptions"); | |
4f18499c | 1027 | flag_reorder_blocks_and_partition = 0; |
1028 | flag_reorder_blocks = 1; | |
1029 | } | |
4d0e931f | 1030 | |
8de492c3 | 1031 | /* If user requested unwind info, then turn off the partitioning |
1032 | optimization. */ | |
1033 | ||
1034 | if (flag_unwind_tables && ! targetm.unwind_tables_default | |
1035 | && flag_reorder_blocks_and_partition) | |
1036 | { | |
5bcc316e | 1037 | inform (input_location, "-freorder-blocks-and-partition does not support unwind info"); |
8de492c3 | 1038 | flag_reorder_blocks_and_partition = 0; |
1039 | flag_reorder_blocks = 1; | |
1040 | } | |
1041 | ||
1042 | /* If the target requested unwind info, then turn off the partitioning | |
1043 | optimization with a different message. Likewise, if the target does not | |
1044 | support named sections. */ | |
1045 | ||
4d0e931f | 1046 | if (flag_reorder_blocks_and_partition |
8de492c3 | 1047 | && (!targetm.have_named_sections |
1048 | || (flag_unwind_tables && targetm.unwind_tables_default))) | |
4d0e931f | 1049 | { |
5bcc316e | 1050 | inform (input_location, |
1051 | "-freorder-blocks-and-partition does not work on this architecture"); | |
4d0e931f | 1052 | flag_reorder_blocks_and_partition = 0; |
1053 | flag_reorder_blocks = 1; | |
1054 | } | |
46f8e3b0 | 1055 | |
e1ab7874 | 1056 | /* Pipelining of outer loops is only possible when general pipelining |
1057 | capabilities are requested. */ | |
1058 | if (!flag_sel_sched_pipelining) | |
1059 | flag_sel_sched_pipelining_outer_loops = 0; | |
1060 | ||
cf709bf6 | 1061 | if (!targetm.ira_cover_classes |
14792f4e | 1062 | && flag_ira_algorithm == IRA_ALGORITHM_CB) |
47dd2e78 | 1063 | { |
14792f4e | 1064 | inform (input_location, |
1065 | "-fira-algorithm=CB does not work on this architecture"); | |
1066 | flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
47dd2e78 | 1067 | } |
47dd2e78 | 1068 | |
46f8e3b0 | 1069 | /* Save the current optimization options if this is the first call. */ |
1070 | if (first_time_p) | |
1071 | { | |
1072 | optimization_default_node = build_optimization_node (); | |
1073 | optimization_current_node = optimization_default_node; | |
1074 | first_time_p = false; | |
1075 | } | |
c231842d | 1076 | if (flag_conserve_stack) |
1077 | { | |
1078 | if (!PARAM_SET_P (PARAM_LARGE_STACK_FRAME)) | |
1079 | PARAM_VALUE (PARAM_LARGE_STACK_FRAME) = 100; | |
1080 | if (!PARAM_SET_P (PARAM_STACK_FRAME_GROWTH)) | |
1081 | PARAM_VALUE (PARAM_STACK_FRAME_GROWTH) = 40; | |
1082 | } | |
1083 | ||
f5d971c5 | 1084 | } |
1085 | ||
87c75316 | 1086 | #define LEFT_COLUMN 27 |
1087 | ||
1088 | /* Output ITEM, of length ITEM_WIDTH, in the left column, | |
1089 | followed by word-wrapped HELP in a second column. */ | |
1090 | static void | |
1091 | wrap_help (const char *help, | |
1092 | const char *item, | |
1093 | unsigned int item_width, | |
1094 | unsigned int columns) | |
1095 | { | |
1096 | unsigned int col_width = LEFT_COLUMN; | |
1097 | unsigned int remaining, room, len; | |
1098 | ||
1099 | remaining = strlen (help); | |
1100 | ||
1101 | do | |
1102 | { | |
1103 | room = columns - 3 - MAX (col_width, item_width); | |
1104 | if (room > columns) | |
1105 | room = 0; | |
1106 | len = remaining; | |
1107 | ||
1108 | if (room < len) | |
1109 | { | |
1110 | unsigned int i; | |
1111 | ||
1112 | for (i = 0; help[i]; i++) | |
1113 | { | |
1114 | if (i >= room && len != remaining) | |
1115 | break; | |
1116 | if (help[i] == ' ') | |
1117 | len = i; | |
1118 | else if ((help[i] == '-' || help[i] == '/') | |
1119 | && help[i + 1] != ' ' | |
1120 | && i > 0 && ISALPHA (help[i - 1])) | |
1121 | len = i + 1; | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | printf( " %-*.*s %.*s\n", col_width, item_width, item, len, help); | |
1126 | item_width = 0; | |
1127 | while (help[len] == ' ') | |
1128 | len++; | |
1129 | help += len; | |
1130 | remaining -= len; | |
1131 | } | |
1132 | while (remaining); | |
1133 | } | |
1134 | ||
1135 | /* Print help for a specific front-end, etc. */ | |
1136 | static void | |
1137 | print_filtered_help (unsigned int include_flags, | |
1138 | unsigned int exclude_flags, | |
1139 | unsigned int any_flags, | |
1140 | unsigned int columns) | |
1141 | { | |
1142 | unsigned int i; | |
1143 | const char *help; | |
1144 | static char *printed = NULL; | |
1145 | bool found = false; | |
1146 | bool displayed = false; | |
1147 | ||
1148 | if (include_flags == CL_PARAMS) | |
1149 | { | |
1150 | for (i = 0; i < LAST_PARAM; i++) | |
1151 | { | |
1152 | const char *param = compiler_params[i].option; | |
1153 | ||
1154 | help = compiler_params[i].help; | |
1155 | if (help == NULL || *help == '\0') | |
1156 | { | |
1157 | if (exclude_flags & CL_UNDOCUMENTED) | |
1158 | continue; | |
1159 | help = undocumented_msg; | |
1160 | } | |
1161 | ||
1162 | /* Get the translation. */ | |
1163 | help = _(help); | |
1164 | ||
1165 | wrap_help (help, param, strlen (param), columns); | |
1166 | } | |
1167 | putchar ('\n'); | |
1168 | return; | |
1169 | } | |
1170 | ||
1171 | if (!printed) | |
4077bf7a | 1172 | printed = XCNEWVAR (char, cl_options_count); |
87c75316 | 1173 | |
1174 | for (i = 0; i < cl_options_count; i++) | |
1175 | { | |
1176 | static char new_help[128]; | |
1177 | const struct cl_option *option = cl_options + i; | |
1178 | unsigned int len; | |
1179 | const char *opt; | |
1180 | const char *tab; | |
1181 | ||
1182 | if (include_flags == 0 | |
1183 | || ((option->flags & include_flags) != include_flags)) | |
1184 | { | |
1185 | if ((option->flags & any_flags) == 0) | |
1186 | continue; | |
1187 | } | |
1188 | ||
1189 | /* Skip unwanted switches. */ | |
1190 | if ((option->flags & exclude_flags) != 0) | |
1191 | continue; | |
1192 | ||
1193 | found = true; | |
1194 | /* Skip switches that have already been printed. */ | |
1195 | if (printed[i]) | |
1196 | continue; | |
1197 | ||
1198 | printed[i] = true; | |
1199 | ||
1200 | help = option->help; | |
1201 | if (help == NULL) | |
1202 | { | |
1203 | if (exclude_flags & CL_UNDOCUMENTED) | |
1204 | continue; | |
1205 | help = undocumented_msg; | |
1206 | } | |
1207 | ||
1208 | /* Get the translation. */ | |
1209 | help = _(help); | |
1210 | ||
1211 | /* Find the gap between the name of the | |
1212 | option and its descriptive text. */ | |
1213 | tab = strchr (help, '\t'); | |
1214 | if (tab) | |
1215 | { | |
1216 | len = tab - help; | |
1217 | opt = help; | |
1218 | help = tab + 1; | |
1219 | } | |
1220 | else | |
1221 | { | |
1222 | opt = option->opt_text; | |
1223 | len = strlen (opt); | |
1224 | } | |
1225 | ||
1226 | /* With the -Q option enabled we change the descriptive text associated | |
1227 | with an option to be an indication of its current setting. */ | |
1228 | if (!quiet_flag) | |
1229 | { | |
1230 | if (len < (LEFT_COLUMN + 2)) | |
1231 | strcpy (new_help, "\t\t"); | |
1232 | else | |
1233 | strcpy (new_help, "\t"); | |
1234 | ||
1235 | if (option->flag_var != NULL) | |
1236 | { | |
1237 | if (option->flags & CL_JOINED) | |
1238 | { | |
1239 | if (option->var_type == CLVC_STRING) | |
1240 | { | |
1241 | if (* (const char **) option->flag_var != NULL) | |
1242 | snprintf (new_help + strlen (new_help), | |
1243 | sizeof (new_help) - strlen (new_help), | |
1244 | * (const char **) option->flag_var); | |
1245 | } | |
1246 | else | |
1247 | sprintf (new_help + strlen (new_help), | |
1248 | "%#x", * (int *) option->flag_var); | |
1249 | } | |
1250 | else | |
1251 | strcat (new_help, option_enabled (i) | |
1252 | ? _("[enabled]") : _("[disabled]")); | |
1253 | } | |
1254 | ||
1255 | help = new_help; | |
1256 | } | |
1257 | ||
1258 | wrap_help (help, opt, len, columns); | |
1259 | displayed = true; | |
1260 | } | |
1261 | ||
1262 | if (! found) | |
86895a67 | 1263 | { |
1264 | unsigned int langs = include_flags & CL_LANG_ALL; | |
1265 | ||
1266 | if (langs == 0) | |
1267 | printf (_(" No options with the desired characteristics were found\n")); | |
1268 | else | |
1269 | { | |
1270 | unsigned int i; | |
1271 | ||
1272 | /* PR 31349: Tell the user how to see all of the | |
1273 | options supported by a specific front end. */ | |
1274 | for (i = 0; (1U << i) < CL_LANG_ALL; i ++) | |
1275 | if ((1U << i) & langs) | |
1276 | printf (_(" None found. Use --help=%s to show *all* the options supported by the %s front-end\n"), | |
1277 | lang_names[i], lang_names[i]); | |
1278 | } | |
1279 | ||
1280 | } | |
87c75316 | 1281 | else if (! displayed) |
1282 | printf (_(" All options with the desired characteristics have already been displayed\n")); | |
1283 | ||
1284 | putchar ('\n'); | |
1285 | } | |
1286 | ||
1287 | /* Display help for a specified type of option. | |
1288 | The options must have ALL of the INCLUDE_FLAGS set | |
1289 | ANY of the flags in the ANY_FLAGS set | |
1290 | and NONE of the EXCLUDE_FLAGS set. */ | |
1291 | static void | |
1292 | print_specific_help (unsigned int include_flags, | |
1293 | unsigned int exclude_flags, | |
1294 | unsigned int any_flags) | |
1295 | { | |
1296 | unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1297 | const char * description = NULL; | |
1298 | const char * descrip_extra = ""; | |
1299 | size_t i; | |
1300 | unsigned int flag; | |
1301 | static unsigned int columns = 0; | |
1302 | ||
1303 | /* Sanity check: Make sure that we do not have more | |
1304 | languages than we have bits available to enumerate them. */ | |
1305 | gcc_assert ((1U << cl_lang_count) < CL_MIN_OPTION_CLASS); | |
1306 | ||
1307 | /* If we have not done so already, obtain | |
1308 | the desired maximum width of the output. */ | |
1309 | if (columns == 0) | |
1310 | { | |
1311 | const char *p; | |
1312 | ||
1313 | GET_ENVIRONMENT (p, "COLUMNS"); | |
1314 | if (p != NULL) | |
1315 | { | |
1316 | int value = atoi (p); | |
1317 | ||
1318 | if (value > 0) | |
1319 | columns = value; | |
1320 | } | |
1321 | ||
1322 | if (columns == 0) | |
1323 | /* Use a reasonable default. */ | |
1324 | columns = 80; | |
1325 | } | |
1326 | ||
1327 | /* Decide upon the title for the options that we are going to display. */ | |
1328 | for (i = 0, flag = 1; flag <= CL_MAX_OPTION_CLASS; flag <<= 1, i ++) | |
1329 | { | |
1330 | switch (flag & include_flags) | |
1331 | { | |
1332 | case 0: | |
1333 | break; | |
1334 | ||
1335 | case CL_TARGET: | |
1336 | description = _("The following options are target specific"); | |
1337 | break; | |
1338 | case CL_WARNING: | |
1339 | description = _("The following options control compiler warning messages"); | |
1340 | break; | |
1341 | case CL_OPTIMIZATION: | |
1342 | description = _("The following options control optimizations"); | |
1343 | break; | |
1344 | case CL_COMMON: | |
1345 | description = _("The following options are language-independent"); | |
1346 | break; | |
1347 | case CL_PARAMS: | |
1348 | description = _("The --param option recognizes the following as parameters"); | |
1349 | break; | |
1350 | default: | |
1351 | if (i >= cl_lang_count) | |
1352 | break; | |
fad6b6bb | 1353 | if (exclude_flags & all_langs_mask) |
d06cb02d | 1354 | description = _("The following options are specific to just the language "); |
87c75316 | 1355 | else |
7fbbfa9f | 1356 | description = _("The following options are supported by the language "); |
86895a67 | 1357 | descrip_extra = lang_names [i]; |
87c75316 | 1358 | break; |
1359 | } | |
1360 | } | |
1361 | ||
1362 | if (description == NULL) | |
1363 | { | |
1364 | if (any_flags == 0) | |
1365 | { | |
fad6b6bb | 1366 | if (include_flags & CL_UNDOCUMENTED) |
87c75316 | 1367 | description = _("The following options are not documented"); |
fad6b6bb | 1368 | else if (include_flags & CL_SEPARATE) |
1369 | description = _("The following options take separate arguments"); | |
1370 | else if (include_flags & CL_JOINED) | |
1371 | description = _("The following options take joined arguments"); | |
87c75316 | 1372 | else |
1373 | { | |
1374 | internal_error ("unrecognized include_flags 0x%x passed to print_specific_help", | |
1375 | include_flags); | |
1376 | return; | |
1377 | } | |
1378 | } | |
1379 | else | |
1380 | { | |
1381 | if (any_flags & all_langs_mask) | |
1382 | description = _("The following options are language-related"); | |
1383 | else | |
1384 | description = _("The following options are language-independent"); | |
1385 | } | |
1386 | } | |
1387 | ||
1388 | printf ("%s%s:\n", description, descrip_extra); | |
1389 | print_filtered_help (include_flags, exclude_flags, any_flags, columns); | |
1390 | } | |
1391 | ||
3272db82 | 1392 | /* Handle target- and language-independent options. Return zero to |
2e9da478 | 1393 | generate an "unknown option" message. Only options that need |
1394 | extra handling need to be listed here; if you simply want | |
1395 | VALUE assigned to a variable, it happens automatically. */ | |
1396 | ||
3272db82 | 1397 | static int |
76f02516 | 1398 | common_handle_option (size_t scode, const char *arg, int value, |
1399 | unsigned int lang_mask) | |
3272db82 | 1400 | { |
86895a67 | 1401 | static bool verbose = false; |
3272db82 | 1402 | enum opt_code code = (enum opt_code) scode; |
1403 | ||
3272db82 | 1404 | switch (code) |
1405 | { | |
da3b1bab | 1406 | case OPT__param: |
1407 | handle_param (arg); | |
1408 | break; | |
1409 | ||
86895a67 | 1410 | case OPT_v: |
1411 | verbose = true; | |
1412 | break; | |
1413 | ||
87c75316 | 1414 | case OPT_fhelp: |
1415 | case OPT__help: | |
1416 | { | |
1417 | unsigned int all_langs_mask = (1U << cl_lang_count) - 1; | |
1418 | unsigned int undoc_mask; | |
1419 | unsigned int i; | |
1420 | ||
86895a67 | 1421 | undoc_mask = (verbose | extra_warnings) ? 0 : CL_UNDOCUMENTED; |
87c75316 | 1422 | /* First display any single language specific options. */ |
1423 | for (i = 0; i < cl_lang_count; i++) | |
1424 | print_specific_help | |
1425 | (1U << i, (all_langs_mask & (~ (1U << i))) | undoc_mask, 0); | |
1426 | /* Next display any multi language specific options. */ | |
1427 | print_specific_help (0, undoc_mask, all_langs_mask); | |
1428 | /* Then display any remaining, non-language options. */ | |
1429 | for (i = CL_MIN_OPTION_CLASS; i <= CL_MAX_OPTION_CLASS; i <<= 1) | |
151ef6b4 | 1430 | print_specific_help (i, undoc_mask, 0); |
87c75316 | 1431 | exit_after_options = true; |
1432 | break; | |
1433 | } | |
1434 | ||
1435 | case OPT_ftarget_help: | |
e690b385 | 1436 | case OPT__target_help: |
87c75316 | 1437 | print_specific_help (CL_TARGET, CL_UNDOCUMENTED, 0); |
e690b385 | 1438 | exit_after_options = true; |
154ee3b8 | 1439 | |
1440 | /* Allow the target a chance to give the user some additional information. */ | |
1441 | if (targetm.target_help) | |
1442 | targetm.target_help (); | |
e690b385 | 1443 | break; |
1444 | ||
87c75316 | 1445 | case OPT_fhelp_: |
1446 | case OPT__help_: | |
1447 | { | |
1448 | const char * a = arg; | |
1449 | unsigned int include_flags = 0; | |
1450 | /* Note - by default we include undocumented options when listing | |
1451 | specific classes. If you only want to see documented options | |
f0b5f617 | 1452 | then add ",^undocumented" to the --help= option. E.g.: |
87c75316 | 1453 | |
1454 | --help=target,^undocumented */ | |
1455 | unsigned int exclude_flags = 0; | |
1456 | ||
1457 | /* Walk along the argument string, parsing each word in turn. | |
1458 | The format is: | |
1459 | arg = [^]{word}[,{arg}] | |
7fbbfa9f | 1460 | word = {optimizers|target|warnings|undocumented| |
1461 | params|common|<language>} */ | |
87c75316 | 1462 | while (* a != 0) |
1463 | { | |
1464 | static struct | |
1465 | { | |
1466 | const char * string; | |
1467 | unsigned int flag; | |
1468 | } | |
1469 | specifics[] = | |
1470 | { | |
1471 | { "optimizers", CL_OPTIMIZATION }, | |
1472 | { "target", CL_TARGET }, | |
1473 | { "warnings", CL_WARNING }, | |
1474 | { "undocumented", CL_UNDOCUMENTED }, | |
1475 | { "params", CL_PARAMS }, | |
b8048da5 | 1476 | { "joined", CL_JOINED }, |
1477 | { "separate", CL_SEPARATE }, | |
7fbbfa9f | 1478 | { "common", CL_COMMON }, |
87c75316 | 1479 | { NULL, 0 } |
1480 | }; | |
1481 | unsigned int * pflags; | |
1482 | char * comma; | |
86895a67 | 1483 | unsigned int lang_flag, specific_flag; |
87c75316 | 1484 | unsigned int len; |
1485 | unsigned int i; | |
1486 | ||
1487 | if (* a == '^') | |
1488 | { | |
1489 | ++ a; | |
1490 | pflags = & exclude_flags; | |
1491 | } | |
1492 | else | |
1493 | pflags = & include_flags; | |
1494 | ||
1495 | comma = strchr (a, ','); | |
1496 | if (comma == NULL) | |
1497 | len = strlen (a); | |
1498 | else | |
1499 | len = comma - a; | |
fad6b6bb | 1500 | if (len == 0) |
1501 | { | |
1502 | a = comma + 1; | |
1503 | continue; | |
1504 | } | |
87c75316 | 1505 | |
86895a67 | 1506 | /* Check to see if the string matches an option class name. */ |
1507 | for (i = 0, specific_flag = 0; specifics[i].string != NULL; i++) | |
87c75316 | 1508 | if (strncasecmp (a, specifics[i].string, len) == 0) |
1509 | { | |
86895a67 | 1510 | specific_flag = specifics[i].flag; |
1511 | break; | |
1512 | } | |
fad6b6bb | 1513 | |
86895a67 | 1514 | /* Check to see if the string matches a language name. |
1515 | Note - we rely upon the alpha-sorted nature of the entries in | |
1516 | the lang_names array, specifically that shorter names appear | |
f0b5f617 | 1517 | before their longer variants. (i.e. C before C++). That way |
86895a67 | 1518 | when we are attempting to match --help=c for example we will |
1519 | match with C first and not C++. */ | |
1520 | for (i = 0, lang_flag = 0; i < cl_lang_count; i++) | |
1521 | if (strncasecmp (a, lang_names[i], len) == 0) | |
1522 | { | |
1523 | lang_flag = 1U << i; | |
87c75316 | 1524 | break; |
1525 | } | |
1526 | ||
86895a67 | 1527 | if (specific_flag != 0) |
87c75316 | 1528 | { |
86895a67 | 1529 | if (lang_flag == 0) |
1530 | * pflags |= specific_flag; | |
1531 | else | |
1532 | { | |
1533 | /* The option's argument matches both the start of a | |
1534 | language name and the start of an option class name. | |
1535 | We have a special case for when the user has | |
1536 | specified "--help=c", but otherwise we have to issue | |
1537 | a warning. */ | |
1538 | if (strncasecmp (a, "c", len) == 0) | |
1539 | * pflags |= lang_flag; | |
1540 | else | |
1541 | fnotice (stderr, | |
1542 | "warning: --help argument %.*s is ambiguous, please be more specific\n", | |
1543 | len, a); | |
1544 | } | |
87c75316 | 1545 | } |
86895a67 | 1546 | else if (lang_flag != 0) |
1547 | * pflags |= lang_flag; | |
1548 | else | |
1549 | fnotice (stderr, | |
1550 | "warning: unrecognized argument to --help= option: %.*s\n", | |
1551 | len, a); | |
87c75316 | 1552 | |
1553 | if (comma == NULL) | |
1554 | break; | |
1555 | a = comma + 1; | |
1556 | } | |
1557 | ||
1558 | if (include_flags) | |
1559 | print_specific_help (include_flags, exclude_flags, 0); | |
1560 | exit_after_options = true; | |
1561 | break; | |
1562 | } | |
1563 | ||
e690b385 | 1564 | case OPT__version: |
1565 | print_version (stderr, ""); | |
1566 | exit_after_options = true; | |
1567 | break; | |
1568 | ||
1569 | case OPT_G: | |
837277ab | 1570 | g_switch_value = value; |
e690b385 | 1571 | g_switch_set = true; |
1572 | break; | |
1573 | ||
da3b1bab | 1574 | case OPT_O: |
1575 | case OPT_Os: | |
1576 | /* Currently handled in a prescan. */ | |
1577 | break; | |
1578 | ||
1579 | case OPT_W: | |
1580 | /* For backward compatibility, -W is the same as -Wextra. */ | |
1581 | set_Wextra (value); | |
1582 | break; | |
1583 | ||
76f02516 | 1584 | case OPT_Werror_: |
3ba510aa | 1585 | enable_warning_as_error (arg, value, lang_mask); |
76f02516 | 1586 | break; |
1587 | ||
da3b1bab | 1588 | case OPT_Wextra: |
1589 | set_Wextra (value); | |
1590 | break; | |
1591 | ||
6f2f567f | 1592 | case OPT_Wlarger_than_: |
17c66687 | 1593 | /* This form corresponds to -Wlarger-than-. |
1594 | Kept for backward compatibility. | |
1595 | Don't use it as the first argument of warning(). */ | |
1596 | ||
1597 | case OPT_Wlarger_than_eq: | |
6f2f567f | 1598 | larger_than_size = value; |
1599 | warn_larger_than = value != -1; | |
1600 | break; | |
1601 | ||
6fdade09 | 1602 | case OPT_Wframe_larger_than_: |
1603 | frame_larger_than_size = value; | |
1604 | warn_frame_larger_than = value != -1; | |
1605 | break; | |
1606 | ||
6f2f567f | 1607 | case OPT_Wstrict_aliasing: |
e6fa0ea6 | 1608 | set_Wstrict_aliasing (value); |
1609 | break; | |
1610 | ||
c1628b55 | 1611 | case OPT_Wstrict_aliasing_: |
6f2f567f | 1612 | warn_strict_aliasing = value; |
1613 | break; | |
1614 | ||
add6ee5e | 1615 | case OPT_Wstrict_overflow: |
47fcc258 | 1616 | warn_strict_overflow = (value |
1617 | ? (int) WARN_STRICT_OVERFLOW_CONDITIONAL | |
1618 | : 0); | |
1619 | break; | |
1620 | ||
add6ee5e | 1621 | case OPT_Wstrict_overflow_: |
1622 | warn_strict_overflow = value; | |
1623 | break; | |
1624 | ||
da3b1bab | 1625 | case OPT_Wunused: |
278e3a1f | 1626 | warn_unused = value; |
da3b1bab | 1627 | break; |
1628 | ||
e690b385 | 1629 | case OPT_aux_info: |
1630 | case OPT_aux_info_: | |
1631 | aux_info_file_name = arg; | |
1632 | flag_gen_aux_info = 1; | |
1633 | break; | |
1634 | ||
1635 | case OPT_auxbase: | |
1636 | aux_base_name = arg; | |
1637 | break; | |
1638 | ||
1639 | case OPT_auxbase_strip: | |
1640 | { | |
1641 | char *tmp = xstrdup (arg); | |
1642 | strip_off_ending (tmp, strlen (tmp)); | |
1643 | if (tmp[0]) | |
1644 | aux_base_name = tmp; | |
1645 | } | |
1646 | break; | |
1647 | ||
1648 | case OPT_d: | |
1649 | decode_d_option (arg); | |
1650 | break; | |
1651 | ||
1652 | case OPT_dumpbase: | |
1653 | dump_base_name = arg; | |
1654 | break; | |
1655 | ||
299dd221 | 1656 | case OPT_falign_functions_: |
1657 | align_functions = value; | |
1658 | break; | |
1659 | ||
299dd221 | 1660 | case OPT_falign_jumps_: |
1661 | align_jumps = value; | |
1662 | break; | |
1663 | ||
299dd221 | 1664 | case OPT_falign_labels_: |
1665 | align_labels = value; | |
1666 | break; | |
1667 | ||
299dd221 | 1668 | case OPT_falign_loops_: |
1669 | align_loops = value; | |
1670 | break; | |
1671 | ||
ecdb6d1a | 1672 | case OPT_fbranch_probabilities: |
7dea76ba | 1673 | flag_branch_probabilities_set = true; |
08d163a9 | 1674 | break; |
1675 | ||
941a4893 | 1676 | case OPT_fcall_used_: |
1677 | fix_register (arg, 0, 1); | |
1678 | break; | |
1679 | ||
1680 | case OPT_fcall_saved_: | |
1681 | fix_register (arg, 0, 0); | |
1682 | break; | |
3072d30e | 1683 | |
1684 | case OPT_fdbg_cnt_: | |
1685 | dbg_cnt_process_opt (arg); | |
1686 | break; | |
d2153a46 | 1687 | |
1688 | case OPT_fdbg_cnt_list: | |
1689 | dbg_cnt_list_all_counters (); | |
1690 | break; | |
941a4893 | 1691 | |
5f1f2de5 | 1692 | case OPT_fdebug_prefix_map_: |
1693 | add_debug_prefix_map (arg); | |
1694 | break; | |
1695 | ||
1e06725a | 1696 | case OPT_fdiagnostics_show_location_: |
1697 | if (!strcmp (arg, "once")) | |
1698 | diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
1699 | else if (!strcmp (arg, "every-line")) | |
1700 | diagnostic_prefixing_rule (global_dc) | |
1701 | = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE; | |
1702 | else | |
1703 | return 0; | |
1704 | break; | |
1705 | ||
b0932b2f | 1706 | case OPT_fdiagnostics_show_option: |
1707 | global_dc->show_option_requested = true; | |
1708 | break; | |
1709 | ||
4ee9c684 | 1710 | case OPT_fdump_: |
1711 | if (!dump_switch_p (arg)) | |
1712 | return 0; | |
1713 | break; | |
1714 | ||
c6418a4e | 1715 | case OPT_fexcess_precision_: |
1716 | if (!strcmp (arg, "fast")) | |
1717 | flag_excess_precision_cmdline = EXCESS_PRECISION_FAST; | |
1718 | else if (!strcmp (arg, "standard")) | |
1719 | flag_excess_precision_cmdline = EXCESS_PRECISION_STANDARD; | |
1720 | else | |
1721 | error ("unknown excess precision style \"%s\"", arg); | |
1722 | break; | |
1723 | ||
941a4893 | 1724 | case OPT_ffast_math: |
1725 | set_fast_math_flags (value); | |
1726 | break; | |
1727 | ||
49d060d7 | 1728 | case OPT_funsafe_math_optimizations: |
1729 | set_unsafe_math_optimizations_flags (value); | |
1730 | break; | |
1731 | ||
941a4893 | 1732 | case OPT_ffixed_: |
1733 | fix_register (arg, 1, 1); | |
1734 | break; | |
1735 | ||
39470ac3 | 1736 | case OPT_finline_limit_: |
1737 | case OPT_finline_limit_eq: | |
39470ac3 | 1738 | set_param_value ("max-inline-insns-single", value / 2); |
1739 | set_param_value ("max-inline-insns-auto", value / 2); | |
39470ac3 | 1740 | break; |
1741 | ||
a95c0776 | 1742 | case OPT_finstrument_functions_exclude_function_list_: |
b5f30e7c | 1743 | add_comma_separated_to_vector |
a95c0776 | 1744 | (&flag_instrument_functions_exclude_functions, arg); |
1745 | break; | |
1746 | ||
1747 | case OPT_finstrument_functions_exclude_file_list_: | |
b5f30e7c | 1748 | add_comma_separated_to_vector |
a95c0776 | 1749 | (&flag_instrument_functions_exclude_files, arg); |
1750 | break; | |
1751 | ||
1e06725a | 1752 | case OPT_fmessage_length_: |
aa6db498 | 1753 | pp_set_line_maximum_length (global_dc->printer, value); |
1e06725a | 1754 | break; |
1755 | ||
6b5553e5 | 1756 | case OPT_fpack_struct_: |
1757 | if (value <= 0 || (value & (value - 1)) || value > 16) | |
87c75316 | 1758 | error ("structure alignment must be a small power of two, not %d", value); |
6b5553e5 | 1759 | else |
1760 | { | |
1761 | initial_max_fld_align = value; | |
1762 | maximum_field_alignment = value * BITS_PER_UNIT; | |
1763 | } | |
1764 | break; | |
1765 | ||
1e06725a | 1766 | case OPT_fpeel_loops: |
7dea76ba | 1767 | flag_peel_loops_set = true; |
ecdb6d1a | 1768 | break; |
1769 | ||
1770 | case OPT_fprofile_arcs: | |
7dea76ba | 1771 | profile_arc_flag_set = true; |
ecdb6d1a | 1772 | break; |
1773 | ||
b97510b2 | 1774 | case OPT_finline_functions: |
1775 | flag_inline_functions_set = true; | |
1776 | break; | |
1777 | ||
3e3a0e9c | 1778 | case OPT_fprofile_dir_: |
1779 | profile_data_prefix = xstrdup (arg); | |
1780 | break; | |
1781 | ||
1782 | case OPT_fprofile_use_: | |
1783 | profile_data_prefix = xstrdup (arg); | |
1784 | flag_profile_use = true; | |
1785 | value = true; | |
1786 | /* No break here - do -fprofile-use processing. */ | |
7dea76ba | 1787 | case OPT_fprofile_use: |
1788 | if (!flag_branch_probabilities_set) | |
1789 | flag_branch_probabilities = value; | |
1790 | if (!flag_profile_values_set) | |
1791 | flag_profile_values = value; | |
1792 | if (!flag_unroll_loops_set) | |
1793 | flag_unroll_loops = value; | |
1794 | if (!flag_peel_loops_set) | |
1795 | flag_peel_loops = value; | |
1796 | if (!flag_tracer_set) | |
1797 | flag_tracer = value; | |
1798 | if (!flag_value_profile_transformations_set) | |
1799 | flag_value_profile_transformations = value; | |
b97510b2 | 1800 | if (!flag_inline_functions_set) |
1801 | flag_inline_functions = value; | |
11b73810 | 1802 | if (!flag_ipa_cp_set) |
1803 | flag_ipa_cp = value; | |
1804 | if (!flag_ipa_cp_clone_set | |
1805 | && value && flag_ipa_cp) | |
1806 | flag_ipa_cp_clone = value; | |
7baffbd3 | 1807 | if (!flag_predictive_commoning_set) |
1808 | flag_predictive_commoning = value; | |
1809 | if (!flag_unswitch_loops_set) | |
1810 | flag_unswitch_loops = value; | |
1811 | if (!flag_gcse_after_reload_set) | |
1812 | flag_gcse_after_reload = value; | |
7dea76ba | 1813 | break; |
1814 | ||
3e3a0e9c | 1815 | case OPT_fprofile_generate_: |
1816 | profile_data_prefix = xstrdup (arg); | |
1817 | value = true; | |
1818 | /* No break here - do -fprofile-generate processing. */ | |
7dea76ba | 1819 | case OPT_fprofile_generate: |
1820 | if (!profile_arc_flag_set) | |
1821 | profile_arc_flag = value; | |
1822 | if (!flag_profile_values_set) | |
1823 | flag_profile_values = value; | |
1824 | if (!flag_value_profile_transformations_set) | |
1825 | flag_value_profile_transformations = value; | |
92ffbdd1 | 1826 | if (!flag_inline_functions_set) |
1827 | flag_inline_functions = value; | |
7dea76ba | 1828 | break; |
1829 | ||
1c6a7b8c | 1830 | case OPT_fprofile_values: |
7dea76ba | 1831 | flag_profile_values_set = true; |
1c6a7b8c | 1832 | break; |
1833 | ||
b212f378 | 1834 | case OPT_fvisibility_: |
1835 | { | |
1836 | if (!strcmp(arg, "default")) | |
1837 | default_visibility = VISIBILITY_DEFAULT; | |
1838 | else if (!strcmp(arg, "internal")) | |
1839 | default_visibility = VISIBILITY_INTERNAL; | |
1840 | else if (!strcmp(arg, "hidden")) | |
1841 | default_visibility = VISIBILITY_HIDDEN; | |
1842 | else if (!strcmp(arg, "protected")) | |
1843 | default_visibility = VISIBILITY_PROTECTED; | |
1844 | else | |
4133d091 | 1845 | error ("unrecognized visibility value \"%s\"", arg); |
b212f378 | 1846 | } |
1847 | break; | |
1848 | ||
1c6a7b8c | 1849 | case OPT_fvpt: |
8a5df2ce | 1850 | flag_value_profile_transformations_set = true; |
1851 | break; | |
1852 | ||
1e06725a | 1853 | case OPT_frandom_seed: |
1854 | /* The real switch is -fno-random-seed. */ | |
1855 | if (value) | |
1856 | return 0; | |
b6c1bd72 | 1857 | set_random_seed (NULL); |
1e06725a | 1858 | break; |
1859 | ||
1860 | case OPT_frandom_seed_: | |
b6c1bd72 | 1861 | set_random_seed (arg); |
1e06725a | 1862 | break; |
1863 | ||
e1ab7874 | 1864 | case OPT_fselective_scheduling: |
1865 | case OPT_fselective_scheduling2: | |
1866 | sel_sched_switch_set = true; | |
1867 | break; | |
1868 | ||
1e06725a | 1869 | case OPT_fsched_verbose_: |
1870 | #ifdef INSN_SCHEDULING | |
1871 | fix_sched_param ("verbose", arg); | |
1872 | break; | |
1873 | #else | |
1874 | return 0; | |
1875 | #endif | |
1876 | ||
52c4b43f | 1877 | case OPT_fsched_stalled_insns_: |
1878 | flag_sched_stalled_insns = value; | |
1879 | if (flag_sched_stalled_insns == 0) | |
1880 | flag_sched_stalled_insns = -1; | |
1881 | break; | |
1882 | ||
52c4b43f | 1883 | case OPT_fsched_stalled_insns_dep_: |
1884 | flag_sched_stalled_insns_dep = value; | |
1885 | break; | |
ecdb6d1a | 1886 | |
4852b829 | 1887 | case OPT_fstack_check_: |
1888 | if (!strcmp (arg, "no")) | |
1889 | flag_stack_check = NO_STACK_CHECK; | |
1890 | else if (!strcmp (arg, "generic")) | |
1891 | /* This is the old stack checking method. */ | |
1892 | flag_stack_check = STACK_CHECK_BUILTIN | |
1893 | ? FULL_BUILTIN_STACK_CHECK | |
1894 | : GENERIC_STACK_CHECK; | |
1895 | else if (!strcmp (arg, "specific")) | |
1896 | /* This is the new stack checking method. */ | |
1897 | flag_stack_check = STACK_CHECK_BUILTIN | |
1898 | ? FULL_BUILTIN_STACK_CHECK | |
1899 | : STACK_CHECK_STATIC_BUILTIN | |
1900 | ? STATIC_BUILTIN_STACK_CHECK | |
1901 | : GENERIC_STACK_CHECK; | |
1902 | else | |
1903 | warning (0, "unknown stack check parameter \"%s\"", arg); | |
1904 | break; | |
1905 | ||
1906 | case OPT_fstack_check: | |
1907 | /* This is the same as the "specific" mode above. */ | |
1908 | if (value) | |
1909 | flag_stack_check = STACK_CHECK_BUILTIN | |
1910 | ? FULL_BUILTIN_STACK_CHECK | |
1911 | : STACK_CHECK_STATIC_BUILTIN | |
1912 | ? STATIC_BUILTIN_STACK_CHECK | |
1913 | : GENERIC_STACK_CHECK; | |
1914 | else | |
1915 | flag_stack_check = NO_STACK_CHECK; | |
1916 | break; | |
1917 | ||
1e06725a | 1918 | case OPT_fstack_limit: |
1919 | /* The real switch is -fno-stack-limit. */ | |
1920 | if (value) | |
1921 | return 0; | |
1922 | stack_limit_rtx = NULL_RTX; | |
1923 | break; | |
1924 | ||
941a4893 | 1925 | case OPT_fstack_limit_register_: |
1926 | { | |
1927 | int reg = decode_reg_name (arg); | |
1928 | if (reg < 0) | |
1929 | error ("unrecognized register name \"%s\"", arg); | |
1930 | else | |
1931 | stack_limit_rtx = gen_rtx_REG (Pmode, reg); | |
1932 | } | |
1933 | break; | |
1934 | ||
1935 | case OPT_fstack_limit_symbol_: | |
1936 | stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (arg)); | |
1937 | break; | |
1938 | ||
459e8543 | 1939 | case OPT_ftree_vectorizer_verbose_: |
1940 | vect_set_verbosity_level (arg); | |
1941 | break; | |
1942 | ||
941a4893 | 1943 | case OPT_ftls_model_: |
1944 | if (!strcmp (arg, "global-dynamic")) | |
1945 | flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; | |
1946 | else if (!strcmp (arg, "local-dynamic")) | |
1947 | flag_tls_default = TLS_MODEL_LOCAL_DYNAMIC; | |
1948 | else if (!strcmp (arg, "initial-exec")) | |
1949 | flag_tls_default = TLS_MODEL_INITIAL_EXEC; | |
1950 | else if (!strcmp (arg, "local-exec")) | |
1951 | flag_tls_default = TLS_MODEL_LOCAL_EXEC; | |
1952 | else | |
c3ceba8e | 1953 | warning (0, "unknown tls-model \"%s\"", arg); |
941a4893 | 1954 | break; |
1955 | ||
47dd2e78 | 1956 | case OPT_fira_algorithm_: |
14792f4e | 1957 | if (!strcmp (arg, "CB")) |
47dd2e78 | 1958 | flag_ira_algorithm = IRA_ALGORITHM_CB; |
14792f4e | 1959 | else if (!strcmp (arg, "priority")) |
1960 | flag_ira_algorithm = IRA_ALGORITHM_PRIORITY; | |
47dd2e78 | 1961 | else |
1962 | warning (0, "unknown ira algorithm \"%s\"", arg); | |
1963 | break; | |
1964 | ||
14792f4e | 1965 | case OPT_fira_region_: |
1966 | if (!strcmp (arg, "one")) | |
1967 | flag_ira_region = IRA_REGION_ONE; | |
1968 | else if (!strcmp (arg, "all")) | |
1969 | flag_ira_region = IRA_REGION_ALL; | |
1970 | else if (!strcmp (arg, "mixed")) | |
1971 | flag_ira_region = IRA_REGION_MIXED; | |
1972 | else | |
1973 | warning (0, "unknown ira region \"%s\"", arg); | |
1974 | break; | |
1975 | ||
47dd2e78 | 1976 | case OPT_fira_verbose_: |
1977 | flag_ira_verbose = value; | |
1978 | break; | |
1979 | ||
1e06725a | 1980 | case OPT_ftracer: |
7dea76ba | 1981 | flag_tracer_set = true; |
4ee9c684 | 1982 | break; |
1983 | ||
11b73810 | 1984 | case OPT_fipa_cp: |
1985 | flag_ipa_cp_set = true; | |
1986 | break; | |
1987 | ||
1988 | case OPT_fipa_cp_clone: | |
1989 | flag_ipa_cp_clone_set = true; | |
1990 | break; | |
1991 | ||
7baffbd3 | 1992 | case OPT_fpredictive_commoning: |
1993 | flag_predictive_commoning_set = true; | |
1994 | break; | |
1995 | ||
1996 | case OPT_funswitch_loops: | |
1997 | flag_unswitch_loops_set = true; | |
1998 | break; | |
1999 | ||
2000 | case OPT_fgcse_after_reload: | |
2001 | flag_gcse_after_reload_set = true; | |
2002 | break; | |
2003 | ||
1e06725a | 2004 | case OPT_funroll_loops: |
7dea76ba | 2005 | flag_unroll_loops_set = true; |
ecdb6d1a | 2006 | break; |
2007 | ||
6f2f567f | 2008 | case OPT_g: |
b0e56fb1 | 2009 | set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg); |
2010 | break; | |
2011 | ||
2012 | case OPT_gcoff: | |
2013 | set_debug_level (SDB_DEBUG, false, arg); | |
2014 | break; | |
2015 | ||
b0e56fb1 | 2016 | case OPT_gdwarf_2: |
2017 | set_debug_level (DWARF2_DEBUG, false, arg); | |
2018 | break; | |
2019 | ||
2020 | case OPT_ggdb: | |
2021 | set_debug_level (NO_DEBUG, 2, arg); | |
2022 | break; | |
2023 | ||
2024 | case OPT_gstabs: | |
2025 | case OPT_gstabs_: | |
2026 | set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg); | |
2027 | break; | |
2028 | ||
2029 | case OPT_gvms: | |
2030 | set_debug_level (VMS_DEBUG, false, arg); | |
2031 | break; | |
2032 | ||
2033 | case OPT_gxcoff: | |
2034 | case OPT_gxcoff_: | |
2035 | set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg); | |
6f2f567f | 2036 | break; |
2037 | ||
e690b385 | 2038 | case OPT_o: |
2039 | asm_file_name = arg; | |
2040 | break; | |
2041 | ||
e690b385 | 2042 | case OPT_pedantic_errors: |
2043 | flag_pedantic_errors = pedantic = 1; | |
2044 | break; | |
2045 | ||
4f87b914 | 2046 | case OPT_floop_optimize: |
2047 | case OPT_frerun_loop_opt: | |
2048 | case OPT_fstrength_reduce: | |
578ef723 | 2049 | case OPT_ftree_store_copy_prop: |
b6863793 | 2050 | case OPT_fforce_addr: |
70393469 | 2051 | case OPT_ftree_salias: |
5c94d20f | 2052 | case OPT_ftree_store_ccp: |
334ec2d8 | 2053 | /* These are no-ops, preserved for backward compatibility. */ |
4f87b914 | 2054 | break; |
2055 | ||
2e9da478 | 2056 | default: |
2057 | /* If the flag was handled in a standard way, assume the lack of | |
2058 | processing here is intentional. */ | |
1fa3a8f6 | 2059 | gcc_assert (cl_options[scode].flag_var); |
2060 | break; | |
3272db82 | 2061 | } |
2062 | ||
2063 | return 1; | |
2064 | } | |
da3b1bab | 2065 | |
2066 | /* Handle --param NAME=VALUE. */ | |
2067 | static void | |
2068 | handle_param (const char *carg) | |
2069 | { | |
2070 | char *equal, *arg; | |
2071 | int value; | |
2072 | ||
2073 | arg = xstrdup (carg); | |
2074 | equal = strchr (arg, '='); | |
2075 | if (!equal) | |
2076 | error ("%s: --param arguments should be of the form NAME=VALUE", arg); | |
2077 | else | |
2078 | { | |
2079 | value = integral_argument (equal + 1); | |
2080 | if (value == -1) | |
1e5fcbe2 | 2081 | error ("invalid --param value %qs", equal + 1); |
da3b1bab | 2082 | else |
2083 | { | |
2084 | *equal = '\0'; | |
2085 | set_param_value (arg, value); | |
2086 | } | |
2087 | } | |
2088 | ||
2089 | free (arg); | |
2090 | } | |
2091 | ||
2092 | /* Handle -W and -Wextra. */ | |
2093 | static void | |
2094 | set_Wextra (int setting) | |
2095 | { | |
2096 | extra_warnings = setting; | |
da3b1bab | 2097 | |
2098 | /* We save the value of warn_uninitialized, since if they put | |
2099 | -Wuninitialized on the command line, we need to generate a | |
2100 | warning about not using it without also specifying -O. */ | |
2101 | if (setting == 0) | |
2102 | warn_uninitialized = 0; | |
2103 | else if (warn_uninitialized != 1) | |
2104 | warn_uninitialized = 2; | |
2105 | } | |
2106 | ||
e6fa0ea6 | 2107 | /* Used to set the level of strict aliasing warnings, |
2108 | when no level is specified (i.e., when -Wstrict-aliasing, and not | |
2109 | -Wstrict-aliasing=level was given). | |
2110 | ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified, | |
2111 | and 0 otherwise. After calling this function, wstrict_aliasing will be | |
2112 | set to the default value of -Wstrict_aliasing=level, currently 3. */ | |
2113 | void | |
2114 | set_Wstrict_aliasing (int onoff) | |
2115 | { | |
2116 | gcc_assert (onoff == 0 || onoff == 1); | |
2117 | if (onoff != 0) | |
2118 | warn_strict_aliasing = 3; | |
e629070d | 2119 | else |
2120 | warn_strict_aliasing = 0; | |
e6fa0ea6 | 2121 | } |
2122 | ||
941a4893 | 2123 | /* The following routines are useful in setting all the flags that |
2124 | -ffast-math and -fno-fast-math imply. */ | |
2125 | void | |
2126 | set_fast_math_flags (int set) | |
2127 | { | |
941a4893 | 2128 | flag_unsafe_math_optimizations = set; |
4a2a1c11 | 2129 | set_unsafe_math_optimizations_flags (set); |
941a4893 | 2130 | flag_finite_math_only = set; |
2131 | flag_errno_math = !set; | |
2132 | if (set) | |
5466f589 | 2133 | { |
2134 | flag_signaling_nans = 0; | |
2135 | flag_rounding_math = 0; | |
45b9d334 | 2136 | flag_cx_limited_range = 1; |
5466f589 | 2137 | } |
941a4893 | 2138 | } |
2139 | ||
49d060d7 | 2140 | /* When -funsafe-math-optimizations is set the following |
2141 | flags are set as well. */ | |
2142 | void | |
2143 | set_unsafe_math_optimizations_flags (int set) | |
2144 | { | |
4a2a1c11 | 2145 | flag_trapping_math = !set; |
2146 | flag_signed_zeros = !set; | |
49d060d7 | 2147 | flag_associative_math = set; |
4a2a1c11 | 2148 | flag_reciprocal_math = set; |
49d060d7 | 2149 | } |
2150 | ||
941a4893 | 2151 | /* Return true iff flags are set as if -ffast-math. */ |
2152 | bool | |
2153 | fast_math_flags_set_p (void) | |
2154 | { | |
2155 | return (!flag_trapping_math | |
2156 | && flag_unsafe_math_optimizations | |
2157 | && flag_finite_math_only | |
893038cd | 2158 | && !flag_signed_zeros |
941a4893 | 2159 | && !flag_errno_math); |
2160 | } | |
53b8e5c1 | 2161 | |
46f8e3b0 | 2162 | /* Return true iff flags are set as if -ffast-math but using the flags stored |
2163 | in the struct cl_optimization structure. */ | |
2164 | bool | |
2165 | fast_math_flags_struct_set_p (struct cl_optimization *opt) | |
2166 | { | |
2167 | return (!opt->flag_trapping_math | |
2168 | && opt->flag_unsafe_math_optimizations | |
2169 | && opt->flag_finite_math_only | |
2170 | && !opt->flag_signed_zeros | |
2171 | && !opt->flag_errno_math); | |
2172 | } | |
2173 | ||
b0e56fb1 | 2174 | /* Handle a debug output -g switch. EXTENDED is true or false to support |
2175 | extended output (2 is special and means "-ggdb" was given). */ | |
2176 | static void | |
2177 | set_debug_level (enum debug_info_type type, int extended, const char *arg) | |
2178 | { | |
2179 | static bool type_explicit; | |
2180 | ||
2181 | use_gnu_debug_info_extensions = extended; | |
2182 | ||
2183 | if (type == NO_DEBUG) | |
2184 | { | |
2185 | if (write_symbols == NO_DEBUG) | |
2186 | { | |
2187 | write_symbols = PREFERRED_DEBUGGING_TYPE; | |
2188 | ||
2189 | if (extended == 2) | |
2190 | { | |
2191 | #ifdef DWARF2_DEBUGGING_INFO | |
2192 | write_symbols = DWARF2_DEBUG; | |
2193 | #elif defined DBX_DEBUGGING_INFO | |
2194 | write_symbols = DBX_DEBUG; | |
2195 | #endif | |
2196 | } | |
2197 | ||
2198 | if (write_symbols == NO_DEBUG) | |
c3ceba8e | 2199 | warning (0, "target system does not support debug output"); |
b0e56fb1 | 2200 | } |
2201 | } | |
2202 | else | |
2203 | { | |
2204 | /* Does it conflict with an already selected type? */ | |
2205 | if (type_explicit && write_symbols != NO_DEBUG && type != write_symbols) | |
2206 | error ("debug format \"%s\" conflicts with prior selection", | |
2207 | debug_type_names[type]); | |
2208 | write_symbols = type; | |
2209 | type_explicit = true; | |
2210 | } | |
2211 | ||
2212 | /* A debug flag without a level defaults to level 2. */ | |
2213 | if (*arg == '\0') | |
2214 | { | |
2215 | if (!debug_info_level) | |
2216 | debug_info_level = 2; | |
2217 | } | |
2218 | else | |
2219 | { | |
2220 | debug_info_level = integral_argument (arg); | |
2221 | if (debug_info_level == (unsigned int) -1) | |
2222 | error ("unrecognised debug output level \"%s\"", arg); | |
2223 | else if (debug_info_level > 3) | |
2224 | error ("debug output level %s is too high", arg); | |
2225 | } | |
2226 | } | |
2227 | ||
ff05e09e | 2228 | /* Return 1 if OPTION is enabled, 0 if it is disabled, or -1 if it isn't |
2229 | a simple on-off switch. */ | |
2230 | ||
2231 | int | |
efb9d9ee | 2232 | option_enabled (int opt_idx) |
ff05e09e | 2233 | { |
efb9d9ee | 2234 | const struct cl_option *option = &(cl_options[opt_idx]); |
87c75316 | 2235 | |
ff05e09e | 2236 | if (option->flag_var) |
0fe44c73 | 2237 | switch (option->var_type) |
ff05e09e | 2238 | { |
2239 | case CLVC_BOOLEAN: | |
0fe44c73 | 2240 | return *(int *) option->flag_var != 0; |
ff05e09e | 2241 | |
2242 | case CLVC_EQUAL: | |
0fe44c73 | 2243 | return *(int *) option->flag_var == option->var_value; |
ff05e09e | 2244 | |
2245 | case CLVC_BIT_CLEAR: | |
0fe44c73 | 2246 | return (*(int *) option->flag_var & option->var_value) == 0; |
ff05e09e | 2247 | |
2248 | case CLVC_BIT_SET: | |
0fe44c73 | 2249 | return (*(int *) option->flag_var & option->var_value) != 0; |
2250 | ||
2251 | case CLVC_STRING: | |
2252 | break; | |
ff05e09e | 2253 | } |
2254 | return -1; | |
2255 | } | |
7abcc497 | 2256 | |
2257 | /* Fill STATE with the current state of option OPTION. Return true if | |
2258 | there is some state to store. */ | |
2259 | ||
2260 | bool | |
2261 | get_option_state (int option, struct cl_option_state *state) | |
2262 | { | |
2263 | if (cl_options[option].flag_var == 0) | |
2264 | return false; | |
2265 | ||
2266 | switch (cl_options[option].var_type) | |
2267 | { | |
2268 | case CLVC_BOOLEAN: | |
2269 | case CLVC_EQUAL: | |
2270 | state->data = cl_options[option].flag_var; | |
2271 | state->size = sizeof (int); | |
2272 | break; | |
2273 | ||
2274 | case CLVC_BIT_CLEAR: | |
2275 | case CLVC_BIT_SET: | |
2276 | state->ch = option_enabled (option); | |
2277 | state->data = &state->ch; | |
2278 | state->size = 1; | |
2279 | break; | |
2280 | ||
2281 | case CLVC_STRING: | |
2282 | state->data = *(const char **) cl_options[option].flag_var; | |
2283 | if (state->data == 0) | |
2284 | state->data = ""; | |
4077bf7a | 2285 | state->size = strlen ((const char *) state->data) + 1; |
7abcc497 | 2286 | break; |
2287 | } | |
2288 | return true; | |
2289 | } | |
3ba510aa | 2290 | |
2291 | /* Enable a warning option as an error. This is used by -Werror= and | |
2292 | also by legacy Werror-implicit-function-declaration. */ | |
2293 | ||
2294 | void | |
2295 | enable_warning_as_error (const char *arg, int value, unsigned int lang_mask) | |
2296 | { | |
2297 | char *new_option; | |
2298 | int option_index; | |
2299 | ||
2300 | new_option = XNEWVEC (char, strlen (arg) + 2); | |
2301 | new_option[0] = 'W'; | |
2302 | strcpy (new_option + 1, arg); | |
2303 | option_index = find_opt (new_option, lang_mask); | |
2304 | if (option_index == N_OPTS) | |
2305 | { | |
2306 | error ("-Werror=%s: No option -%s", arg, new_option); | |
2307 | } | |
2308 | else | |
2309 | { | |
2310 | int kind = value ? DK_ERROR : DK_WARNING; | |
2311 | diagnostic_classify_diagnostic (global_dc, option_index, kind); | |
2312 | ||
2313 | /* -Werror=foo implies -Wfoo. */ | |
2314 | if (cl_options[option_index].var_type == CLVC_BOOLEAN | |
2315 | && cl_options[option_index].flag_var | |
2316 | && kind == DK_ERROR) | |
2317 | *(int *) cl_options[option_index].flag_var = 1; | |
2318 | } | |
2319 | free (new_option); | |
2320 | } |