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Commit | Line | Data |
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d7b42618 | 1 | ; Options for the language- and target-independent parts of the compiler. |
50431bc4 | 2 | |
818ab71a | 3 | ; Copyright (C) 2003-2016 Free Software Foundation, Inc. |
d7b42618 NB |
4 | ; |
5 | ; This file is part of GCC. | |
6 | ; | |
7 | ; GCC is free software; you can redistribute it and/or modify it under | |
8 | ; the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 9 | ; Software Foundation; either version 3, or (at your option) any later |
d7b42618 | 10 | ; version. |
c22cacf3 | 11 | ; |
d7b42618 NB |
12 | ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | ; WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | ; for more details. | |
c22cacf3 | 16 | ; |
d7b42618 | 17 | ; You should have received a copy of the GNU General Public License |
9dcd6f09 NC |
18 | ; along with GCC; see the file COPYING3. If not see |
19 | ; <http://www.gnu.org/licenses/>. | |
d7b42618 | 20 | |
71733172 | 21 | ; See the GCC internals manual (options.texi) for a description of this file's format. |
d7b42618 NB |
22 | |
23 | ; Please try to keep this file in ASCII collating order. | |
24 | ||
e90afde6 JM |
25 | Variable |
26 | int target_flags | |
27 | ||
46625112 JM |
28 | Variable |
29 | int optimize | |
30 | ||
31 | Variable | |
32 | int optimize_size | |
33 | ||
bf7a7185 RG |
34 | Variable |
35 | int optimize_debug | |
36 | ||
0a8134ca JM |
37 | ; Not used directly to control optimizations, only to save -Ofast |
38 | ; setting for "optimize" attributes. | |
39 | Variable | |
40 | int optimize_fast | |
41 | ||
a7d0d30f JM |
42 | ; True if this is the lto front end. This is used to disable gimple |
43 | ; generation and lowering passes that are normally run on the output | |
44 | ; of a front end. These passes must be bypassed for lto since they | |
45 | ; have already been done before the gimple was written. | |
46 | Variable | |
47 | bool in_lto_p = false | |
48 | ||
1ff9ed6f JH |
49 | ; This variable is set to non-0 only by LTO front-end. 1 indicates that |
50 | ; the output produced will be used for incrmeental linking (thus weak symbols | |
51 | ; can still be bound). | |
52 | Variable | |
53 | int flag_incremental_link = 0 | |
54 | ||
a75bfaa6 JM |
55 | ; 0 means straightforward implementation of complex divide acceptable. |
56 | ; 1 means wide ranges of inputs must work for complex divide. | |
57 | ; 2 means C99-like requirements for complex multiply and divide. | |
58 | Variable | |
59 | int flag_complex_method = 1 | |
60 | ||
61 | ; Nonzero if subexpressions must be evaluated from left-to-right. | |
62 | Variable | |
63 | int flag_evaluation_order = 0 | |
64 | ||
a75bfaa6 JM |
65 | ; Language specific warning pass for unused results. |
66 | Variable | |
67 | bool flag_warn_unused_result = false | |
68 | ||
48476d13 JM |
69 | Variable |
70 | int *param_values | |
71 | ||
d5478783 JM |
72 | ; Nonzero if we should write GIMPLE bytecode for link-time optimization. |
73 | Variable | |
74 | int flag_generate_lto | |
75 | ||
f0d78df9 IV |
76 | ; Nonzero if we should write GIMPLE bytecode for offload compilation. |
77 | Variable | |
78 | int flag_generate_offload = 0 | |
79 | ||
d5478783 JM |
80 | ; True to warn about any objects definitions whose size is larger |
81 | ; than N bytes. Also want about function definitions whose returned | |
82 | ; values are larger than N bytes, where N is 'larger_than_size'. | |
83 | Variable | |
84 | bool warn_larger_than | |
85 | ||
86 | Variable | |
87 | HOST_WIDE_INT larger_than_size | |
88 | ||
89 | ; True to warn about any function whose frame size is larger | |
90 | ; than N bytes. | |
91 | Variable | |
92 | bool warn_frame_larger_than | |
93 | ||
94 | Variable | |
95 | HOST_WIDE_INT frame_larger_than_size | |
96 | ||
97 | ; Nonzero means we should be saving declaration info into a .X file. | |
98 | Variable | |
99 | int flag_gen_aux_info = 0 | |
100 | ||
101 | ; Nonzero if we are compiling code for a shared library, zero for | |
102 | ; executable. | |
103 | Variable | |
104 | int flag_shlib | |
105 | ||
6a1f6c9c JM |
106 | ; These two are really VEC(char_p,heap) *. |
107 | ||
108 | Variable | |
109 | void *flag_instrument_functions_exclude_functions | |
110 | ||
111 | Variable | |
112 | void *flag_instrument_functions_exclude_files | |
113 | ||
69ccdddb JM |
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 | Variable | |
122 | enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
123 | ||
124 | Variable | |
125 | enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
126 | ||
0576d21f JM |
127 | ; True if we should exit after parsing options. |
128 | Variable | |
129 | bool exit_after_options | |
130 | ||
131 | ; Type(s) of debugging information we are producing (if any). See | |
132 | ; flag-types.h for the definitions of the different possible types of | |
133 | ; debugging information. | |
134 | Variable | |
135 | enum debug_info_type write_symbols = NO_DEBUG | |
136 | ||
137 | ; Level of debugging information we are producing. See flag-types.h | |
138 | ; for the definitions of the different possible levels. | |
139 | Variable | |
140 | enum debug_info_levels debug_info_level = DINFO_LEVEL_NONE | |
141 | ||
142 | ; Nonzero means use GNU-only extensions in the generated symbolic | |
143 | ; debugging information. Currently, this only has an effect when | |
144 | ; write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. | |
145 | Variable | |
146 | bool use_gnu_debug_info_extensions | |
147 | ||
299404a1 JM |
148 | ; Original value of maximum field alignment in bytes, specified via |
149 | ; -fpack-struct=<value>. | |
150 | Variable | |
151 | unsigned int initial_max_fld_align = TARGET_DEFAULT_PACK_STRUCT | |
152 | ||
5e471ea6 JM |
153 | ; Type of stack check. |
154 | Variable | |
155 | enum stack_check_type flag_stack_check = NO_STACK_CHECK | |
156 | ||
a11e0df4 EB |
157 | ; True if stack usage information needs to be computed. |
158 | Variable | |
159 | bool flag_stack_usage_info = false | |
160 | ||
299404a1 JM |
161 | ; -dA causes debug commentary information to be produced in |
162 | ; the generated assembly code (to make it more readable). This option | |
163 | ; is generally only of use to those who actually need to read the | |
164 | ; generated assembly code (perhaps while debugging the compiler itself). | |
165 | ; Currently, this switch is only used by dwarf2out.c; however, it is intended | |
166 | ; to be a catchall for printing debug information in the assembler file. | |
167 | Variable | |
168 | int flag_debug_asm | |
169 | ||
6592d14b PMR |
170 | |
171 | ; Balance between GNAT encodings and standard DWARF to emit. | |
172 | Variable | |
173 | enum dwarf_gnat_encodings gnat_encodings = DWARF_GNAT_ENCODINGS_DEFAULT | |
174 | ||
299404a1 JM |
175 | ; -dP causes the rtl to be emitted as a comment in assembly. |
176 | Variable | |
177 | int flag_dump_rtl_in_asm | |
178 | ||
179 | ; Whether -da was passed (used only in handle_common_deferred_options). | |
180 | Variable | |
181 | bool flag_dump_all_passed | |
182 | ||
183 | ; Other flags saying which kinds of debugging dump have been requested. | |
184 | ||
185 | Variable | |
186 | int rtl_dump_and_exit | |
187 | ||
188 | Variable | |
189 | int flag_print_asm_name | |
190 | ||
a803773f JM |
191 | ; Name of top-level original source file (what was input to cpp). |
192 | ; This comes from the #-command at the beginning of the actual input. | |
193 | ; If there isn't any there, then this is the cc1 input file name. | |
194 | Variable | |
195 | const char *main_input_filename | |
196 | ||
197 | ; Pointer to base name in main_input_filename, with directories and a | |
198 | ; single final extension removed, and the length of this base | |
199 | ; name. | |
200 | ||
201 | Variable | |
202 | const char *main_input_basename | |
203 | ||
204 | Variable | |
205 | int main_input_baselength | |
206 | ||
299404a1 JM |
207 | ; Which options have been printed by --help. |
208 | Variable | |
209 | char *help_printed | |
210 | ||
e6d4b984 JM |
211 | ; Which enums have been printed by --help. 0 = not printed, no |
212 | ; relevant options seen, 1 = relevant option seen, not yet printed, 2 | |
213 | ; = printed. | |
214 | Variable | |
215 | char *help_enum_printed | |
216 | ||
299404a1 JM |
217 | ; The number of columns for --help output. |
218 | Variable | |
219 | unsigned int help_columns | |
220 | ||
221 | ; Whether this options structure has been through finish_options | |
222 | Variable | |
223 | bool flag_opts_finished | |
224 | ||
de5a5fa1 MP |
225 | ; What the sanitizer should instrument |
226 | Variable | |
227 | unsigned int flag_sanitize | |
228 | ||
d95a2703 JJ |
229 | ; What sanitizers should recover from errors |
230 | Variable | |
fed4de37 | 231 | unsigned int flag_sanitize_recover = SANITIZE_UNDEFINED | SANITIZE_NONDEFAULT | SANITIZE_KERNEL_ADDRESS |
d95a2703 | 232 | |
95e7bbb8 DV |
233 | fsanitize-coverage=trace-pc |
234 | Common Report Var(flag_sanitize_coverage) | |
235 | Enable coverage-guided fuzzing code instrumentation. | |
236 | Inserts call to __sanitizer_cov_trace_pc into every basic block. | |
237 | ||
91035653 JJ |
238 | ; Flag whether a prefix has been added to dump_base_name |
239 | Variable | |
240 | bool dump_base_name_prefixed = false | |
241 | ||
b2b40051 MJ |
242 | ; Flag whether HSA generation has been explicitely disabled |
243 | Variable | |
244 | bool flag_disable_hsa = false | |
245 | ||
603349bf JM |
246 | ### |
247 | Driver | |
248 | ||
e200444e JM |
249 | -assemble |
250 | Driver Alias(S) | |
251 | ||
252 | -compile | |
253 | Driver Alias(c) | |
254 | ||
255 | -coverage | |
256 | Driver Alias(coverage) | |
257 | ||
258 | -debug | |
259 | Common Alias(g) | |
260 | ||
261 | -dump | |
262 | Common Separate Alias(d) | |
263 | ||
264 | -dump= | |
265 | Common Joined Alias(d) | |
266 | ||
267 | -dumpbase | |
268 | Common Separate Alias(dumpbase) | |
269 | ||
270 | -dumpdir | |
271 | Common Separate Alias(dumpdir) | |
272 | ||
273 | -entry | |
274 | Driver Separate Alias(e) | |
275 | ||
276 | -entry= | |
277 | Driver Joined Alias(e) | |
278 | ||
279 | -extra-warnings | |
280 | Common Warning Alias(Wextra) | |
281 | ||
282 | -for-assembler | |
283 | Driver Separate Alias(Xassembler) | |
284 | ||
285 | -for-assembler= | |
286 | Driver JoinedOrMissing Alias(Xassembler) | |
287 | ||
288 | -for-linker | |
289 | Driver Separate Alias(Xlinker) | |
290 | ||
291 | -for-linker= | |
292 | Driver JoinedOrMissing Alias(Xlinker) | |
293 | ||
294 | -force-link | |
295 | Driver Separate Alias(u) | |
296 | ||
297 | -force-link= | |
298 | Driver Joined Alias(u) | |
299 | ||
d185d268 | 300 | -help |
e200444e | 301 | Common Driver Var(help_flag) |
a7b2e184 | 302 | Display this information. |
d185d268 | 303 | |
c662432e | 304 | -help= |
603349bf | 305 | Common Driver Report Joined |
a7b2e184 | 306 | --help=<class> Display descriptions of a specific class of options. <class> is one or more of optimizers, target, warnings, undocumented, params. |
903caebf | 307 | |
e200444e JM |
308 | -language |
309 | Driver Separate Alias(x) | |
310 | ||
311 | -language= | |
312 | Driver Joined Alias(x) | |
313 | ||
314 | -library-directory | |
315 | Driver Separate Alias(L) | |
316 | ||
317 | -library-directory= | |
318 | Driver Joined Alias(L) | |
319 | ||
320 | -no-canonical-prefixes | |
321 | Driver Alias(no-canonical-prefixes) | |
322 | ||
323 | -no-standard-libraries | |
324 | Driver Alias(nostdlib) | |
325 | ||
28b4fc51 JM |
326 | -no-sysroot-suffix |
327 | Driver Var(no_sysroot_suffix) | |
328 | ||
e200444e JM |
329 | -no-warnings |
330 | Common Alias(w) | |
331 | ||
332 | -optimize | |
333 | Common Alias(O) | |
334 | ||
335 | -output | |
336 | Common Driver Separate Alias(o) MissingArgError(missing filename after %qs) | |
337 | ||
338 | -output= | |
339 | Common Driver Joined Alias(o) MissingArgError(missing filename after %qs) | |
340 | ||
341 | -pass-exit-codes | |
342 | Driver Alias(pass-exit-codes) | |
343 | ||
344 | -pedantic | |
c1771a20 | 345 | Common Alias(Wpedantic) |
e200444e JM |
346 | |
347 | -pedantic-errors | |
348 | Common Alias(pedantic-errors) | |
349 | ||
350 | -pie | |
5460e1fc | 351 | Driver Alias(pie) |
e200444e JM |
352 | |
353 | -pipe | |
354 | Driver Alias(pipe) | |
355 | ||
356 | -prefix | |
357 | Driver Separate Alias(B) | |
358 | ||
359 | -prefix= | |
360 | Driver JoinedOrMissing Alias(B) | |
361 | ||
362 | -preprocess | |
363 | Driver Alias(E) | |
364 | ||
365 | -print-file-name | |
366 | Driver Separate Alias(print-file-name=) | |
367 | ||
368 | -print-file-name= | |
369 | Driver JoinedOrMissing Alias(print-file-name=) | |
370 | ||
371 | -print-libgcc-file-name | |
372 | Driver Alias(print-libgcc-file-name) | |
373 | ||
374 | -print-multi-directory | |
375 | Driver Alias(print-multi-directory) | |
376 | ||
377 | -print-multi-lib | |
378 | Driver Alias(print-multi-lib) | |
379 | ||
380 | -print-multi-os-directory | |
381 | Driver Alias(print-multi-os-directory) | |
382 | ||
e0cdc09f MK |
383 | -print-multiarch |
384 | Driver Alias(print-multiarch) | |
385 | ||
e200444e JM |
386 | -print-prog-name |
387 | Driver Separate Alias(print-prog-name=) | |
388 | ||
389 | -print-prog-name= | |
390 | Driver JoinedOrMissing Alias(print-prog-name=) | |
391 | ||
392 | -print-search-dirs | |
393 | Driver Alias(print-search-dirs) | |
394 | ||
395 | -print-sysroot | |
396 | Driver Alias(print-sysroot) | |
397 | ||
398 | -print-sysroot-headers-suffix | |
399 | Driver Alias(print-sysroot-headers-suffix) | |
400 | ||
401 | -profile | |
402 | Common Alias(p) | |
403 | ||
404 | -save-temps | |
405 | Driver Alias(save-temps) | |
406 | ||
407 | -shared | |
5460e1fc | 408 | Driver Alias(shared) |
e200444e JM |
409 | |
410 | -specs | |
411 | Driver Separate Alias(specs=) | |
412 | ||
413 | -specs= | |
414 | Driver Joined Alias(specs=) | |
415 | ||
416 | -static | |
417 | Driver Alias(static) | |
418 | ||
419 | -symbolic | |
420 | Driver Alias(symbolic) | |
421 | ||
d185d268 | 422 | -target-help |
603349bf | 423 | Common Driver |
a7b2e184 | 424 | Alias for --help=target. |
c662432e | 425 | |
e200444e JM |
426 | -time |
427 | Driver Alias(time) | |
428 | ||
429 | -verbose | |
430 | Driver Alias(v) | |
431 | ||
432 | ;; The driver used to convert options such as --help into forms such | |
433 | ;; as -fhelp; the following four entries are for compatibility with | |
434 | ;; any direct uses of those (undocumented) -f forms | |
c662432e | 435 | fhelp |
e200444e | 436 | Common Driver Alias(-help) |
c662432e NC |
437 | |
438 | fhelp= | |
e200444e | 439 | Common Driver Joined Alias(-help=) |
c662432e NC |
440 | |
441 | ftarget-help | |
e200444e | 442 | Common Driver Alias(-target-help) |
c662432e | 443 | |
41fd0f9b | 444 | fversion |
e200444e | 445 | Common Driver Alias(-version) |
41fd0f9b | 446 | |
c662432e NC |
447 | -param |
448 | Common Separate | |
a7b2e184 | 449 | --param <param>=<value> Set parameter <param> to value. See below for a complete list of parameters. |
d185d268 | 450 | |
e200444e JM |
451 | -param= |
452 | Common Joined Alias(-param) | |
453 | ||
454 | -sysroot | |
455 | Driver Separate Alias(-sysroot=) | |
456 | ||
603349bf JM |
457 | -sysroot= |
458 | Driver JoinedOrMissing | |
459 | ||
d185d268 | 460 | -version |
603349bf JM |
461 | Common Driver |
462 | ||
463 | B | |
464 | Driver Joined Separate | |
465 | ||
466 | E | |
467 | Driver | |
d185d268 | 468 | |
d9d16a19 JM |
469 | L |
470 | Driver Joined Separate | |
471 | ||
dd9f93dc JM |
472 | N |
473 | Driver | |
474 | ||
903caebf | 475 | O |
ab442df7 | 476 | Common JoinedOrMissing Optimization |
a7b2e184 | 477 | -O<number> Set optimization level to <number>. |
903caebf NB |
478 | |
479 | Os | |
ab442df7 | 480 | Common Optimization |
a7b2e184 | 481 | Optimize for space rather than speed. |
903caebf | 482 | |
be6d3f0e RG |
483 | Ofast |
484 | Common Optimization | |
a7b2e184 | 485 | Optimize for speed disregarding exact standards compliance. |
be6d3f0e | 486 | |
bf7a7185 RG |
487 | Og |
488 | Common Optimization | |
a7b2e184 | 489 | Optimize for debugging experience rather than speed or size. |
bf7a7185 | 490 | |
dd9f93dc JM |
491 | Q |
492 | Driver | |
493 | ||
494 | Qn | |
495 | Driver Negative(Qy) | |
496 | ||
497 | Qy | |
498 | Driver Negative(Qn) | |
499 | ||
6d721f67 JM |
500 | R |
501 | Driver Joined Separate | |
502 | ||
603349bf JM |
503 | S |
504 | Driver | |
505 | ||
6d721f67 JM |
506 | T |
507 | Driver Joined Separate | |
508 | ||
509 | Tbss | |
510 | Driver Separate | |
511 | ||
e69d7376 JM |
512 | Tbss= |
513 | Driver Joined | |
514 | ||
6d721f67 JM |
515 | Tdata |
516 | Driver Separate | |
517 | ||
e69d7376 JM |
518 | Tdata= |
519 | Driver Joined | |
520 | ||
6d721f67 JM |
521 | Ttext |
522 | Driver Separate | |
523 | ||
e69d7376 JM |
524 | Ttext= |
525 | Driver Joined | |
526 | ||
903caebf | 527 | W |
5de8299c | 528 | Common RejectNegative Warning Alias(Wextra) |
a7b2e184 | 529 | This switch is deprecated; use -Wextra instead. |
903caebf | 530 | |
603349bf JM |
531 | Wa, |
532 | Driver JoinedOrMissing | |
533 | ||
534 | Wl, | |
535 | Driver JoinedOrMissing | |
536 | ||
537 | Wp, | |
538 | Driver JoinedOrMissing | |
539 | ||
e01cc6dc | 540 | Waggregate-return |
c662432e | 541 | Common Var(warn_aggregate_return) Warning |
a7b2e184 | 542 | Warn about returning structures, unions or arrays. |
e01cc6dc | 543 | |
fbd28bc3 JJ |
544 | Waggressive-loop-optimizations |
545 | Common Var(warn_aggressive_loop_optimizations) Init(1) Warning | |
a7b2e184 | 546 | Warn if a loop with constant number of iterations triggers undefined behavior. |
fbd28bc3 | 547 | |
590b1f2d | 548 | Warray-bounds |
21af5cdf | 549 | Common Var(warn_array_bounds) Warning |
a7b2e184 | 550 | Warn if an array is accessed out of bounds. |
590b1f2d | 551 | |
de1b5c17 MU |
552 | Warray-bounds= |
553 | Common Joined RejectNegative UInteger Var(warn_array_bounds) Warning | |
a7b2e184 | 554 | Warn if an array is accessed out of bounds. |
de1b5c17 | 555 | |
5c498b10 | 556 | Wattributes |
c662432e | 557 | Common Var(warn_attributes) Init(1) Warning |
a7b2e184 | 558 | Warn about inappropriate attribute usage. |
5c498b10 | 559 | |
e01cc6dc | 560 | Wcast-align |
c662432e | 561 | Common Var(warn_cast_align) Warning |
a7b2e184 | 562 | Warn about pointer casts which increase alignment. |
e01cc6dc | 563 | |
87cf0651 SB |
564 | Wcpp |
565 | Common Var(warn_cpp) Init(1) Warning | |
a7b2e184 | 566 | Warn when a #warning directive is encountered. |
87cf0651 | 567 | |
e01cc6dc | 568 | Wdeprecated-declarations |
c662432e | 569 | Common Var(warn_deprecated_decl) Init(1) Warning |
a7b2e184 | 570 | Warn about uses of __attribute__((deprecated)) declarations. |
e01cc6dc NB |
571 | |
572 | Wdisabled-optimization | |
c662432e | 573 | Common Var(warn_disabled_optimization) Warning |
a7b2e184 | 574 | Warn when an optimization pass is disabled. |
e01cc6dc NB |
575 | |
576 | Werror | |
50431bc4 | 577 | Common Var(warnings_are_errors) |
a7b2e184 | 578 | Treat all warnings as errors. |
e01cc6dc | 579 | |
79cf5994 DD |
580 | Werror= |
581 | Common Joined | |
a7b2e184 | 582 | Treat specified warning as error. |
79cf5994 | 583 | |
903caebf | 584 | Wextra |
62a67c94 | 585 | Common Var(extra_warnings) Warning |
a7b2e184 | 586 | Print extra (possibly unwanted) warnings. |
903caebf | 587 | |
c65a01af | 588 | Wfatal-errors |
50431bc4 | 589 | Common Var(flag_fatal_errors) |
a7b2e184 | 590 | Exit on the first error occurred. |
c65a01af | 591 | |
a214518f | 592 | Wframe-larger-than= |
63bbf46d | 593 | Common RejectNegative Joined UInteger Warning |
a7b2e184 | 594 | -Wframe-larger-than=<number> Warn if a function's stack frame requires more than <number> bytes. |
a214518f | 595 | |
a3a704a4 MH |
596 | Wfree-nonheap-object |
597 | Common Var(warn_free_nonheap_object) Init(1) Warning | |
a7b2e184 | 598 | Warn when attempting to free a non-heap object. |
a3a704a4 | 599 | |
b2b40051 MJ |
600 | Whsa |
601 | Common Var(warn_hsa) Init(1) Warning | |
602 | Warn when a function cannot be expanded to HSAIL. | |
603 | ||
e01cc6dc | 604 | Winline |
c662432e | 605 | Common Var(warn_inline) Warning |
a7b2e184 | 606 | Warn when an inlined function cannot be inlined. |
e01cc6dc | 607 | |
86951993 AM |
608 | Winvalid-memory-model |
609 | Common Var(warn_invalid_memory_model) Init(1) Warning | |
610 | Warn when an atomic memory model parameter is known to be outside the valid range. | |
611 | ||
e01cc6dc | 612 | Wlarger-than- |
5de8299c | 613 | Common RejectNegative Joined Warning Undocumented Alias(Wlarger-than=) |
e8fc888d MLI |
614 | |
615 | Wlarger-than= | |
616 | Common RejectNegative Joined UInteger Warning | |
a7b2e184 | 617 | -Wlarger-than=<number> Warn if an object is larger than <number> bytes. |
e01cc6dc | 618 | |
76787f70 | 619 | Wnull-dereference |
c2d89095 | 620 | Common Var(warn_null_dereference) Warning |
a7b2e184 | 621 | Warn if dereferencing a NULL pointer may lead to erroneous or undefined behavior. |
76787f70 | 622 | |
f9cc1a70 | 623 | Wunsafe-loop-optimizations |
c662432e | 624 | Common Var(warn_unsafe_loop_optimizations) Warning |
f9cc1a70 PB |
625 | Warn if the loop cannot be optimized due to nontrivial assumptions. |
626 | ||
e01cc6dc | 627 | Wmissing-noreturn |
54d62f51 | 628 | Common Warning Alias(Wsuggest-attribute=noreturn) |
e01cc6dc | 629 | |
c59f7203 | 630 | Wodr |
a0fd3373 | 631 | Common Var(warn_odr_violations) Init(1) Warning |
a7b2e184 | 632 | Warn about some C++ One Definition Rule violations during link time optimization. |
c59f7203 | 633 | |
71834ad3 | 634 | Woverflow |
c662432e | 635 | Common Var(warn_overflow) Init(1) Warning |
a7b2e184 | 636 | Warn about overflow in arithmetic expressions. |
71834ad3 | 637 | |
259d29e3 JH |
638 | Wlto-type-mismatch |
639 | Common Var(warn_lto_type_mismatch) Init(1) Warning | |
a7b2e184 | 640 | During link time optimization warn about mismatched types of global declarations. |
259d29e3 | 641 | |
e01cc6dc | 642 | Wpacked |
c662432e | 643 | Common Var(warn_packed) Warning |
a7b2e184 | 644 | Warn when the packed attribute has no effect on struct layout. |
e01cc6dc NB |
645 | |
646 | Wpadded | |
c662432e | 647 | Common Var(warn_padded) Warning |
a7b2e184 | 648 | Warn when padding is required to align structure members. |
e01cc6dc | 649 | |
c1771a20 | 650 | Wpedantic |
2b71f4a4 | 651 | Common Var(pedantic) Init(0) Warning |
a7b2e184 | 652 | Issue warnings needed for strict compliance to the standard. |
c1771a20 | 653 | |
b4dfdc11 MG |
654 | Wreturn-local-addr |
655 | Common Var(warn_return_local_addr) Init(1) Warning | |
656 | Warn about returning a pointer/reference to a local or temporary variable. | |
657 | ||
e01cc6dc | 658 | Wshadow |
c662432e | 659 | Common Var(warn_shadow) Warning |
a7b2e184 | 660 | Warn when one local variable shadows another. |
e01cc6dc | 661 | |
7d69de61 | 662 | Wstack-protector |
c662432e | 663 | Common Var(warn_stack_protect) Warning |
a7b2e184 | 664 | Warn when not issuing stack smashing protection for some reason. |
7d69de61 | 665 | |
a11e0df4 EB |
666 | Wstack-usage= |
667 | Common Joined RejectNegative UInteger Var(warn_stack_usage) Init(-1) Warning | |
a7b2e184 | 668 | Warn if stack usage might be larger than specified amount. |
a11e0df4 | 669 | |
e01cc6dc | 670 | Wstrict-aliasing |
c662432e | 671 | Common Warning |
a7b2e184 | 672 | Warn about code which might break strict aliasing rules. |
e01cc6dc | 673 | |
5399d643 | 674 | Wstrict-aliasing= |
65d4f2cd | 675 | Common Joined RejectNegative UInteger Var(warn_strict_aliasing) Warning |
a7b2e184 | 676 | Warn about code which might break strict aliasing rules. |
5399d643 | 677 | |
6ac01510 | 678 | Wstrict-overflow |
21af5cdf | 679 | Common Warning |
a7b2e184 | 680 | Warn about optimizations that assume that signed overflow is undefined. |
6ac01510 ILT |
681 | |
682 | Wstrict-overflow= | |
65d4f2cd | 683 | Common Joined RejectNegative UInteger Var(warn_strict_overflow) Warning |
a7b2e184 | 684 | Warn about optimizations that assume that signed overflow is undefined. |
6ac01510 | 685 | |
5dc16b19 MLI |
686 | Wsuggest-attribute=const |
687 | Common Var(warn_suggest_attribute_const) Warning | |
a7b2e184 | 688 | Warn about functions which might be candidates for __attribute__((const)). |
5dc16b19 MLI |
689 | |
690 | Wsuggest-attribute=pure | |
691 | Common Var(warn_suggest_attribute_pure) Warning | |
a7b2e184 | 692 | Warn about functions which might be candidates for __attribute__((pure)). |
5dc16b19 | 693 | |
7ea6b6cf JH |
694 | Wsuggest-attribute=noreturn |
695 | Common Var(warn_suggest_attribute_noreturn) Warning | |
a7b2e184 | 696 | Warn about functions which might be candidates for __attribute__((noreturn)). |
7ea6b6cf | 697 | |
91bc34a9 JH |
698 | Wsuggest-final-types |
699 | Common Var(warn_suggest_final_types) Warning | |
a7b2e184 | 700 | Warn about C++ polymorphic types where adding final keyword would improve code quality. |
91bc34a9 JH |
701 | |
702 | Wsuggest-final-methods | |
703 | Common Var(warn_suggest_final_methods) Warning | |
a7b2e184 | 704 | Warn about C++ virtual methods where adding final keyword would improve code quality. |
91bc34a9 | 705 | |
e01cc6dc | 706 | Wsystem-headers |
c662432e | 707 | Common Var(warn_system_headers) Warning |
a7b2e184 | 708 | Do not suppress warnings from system headers. |
e01cc6dc | 709 | |
8ffadef9 MG |
710 | Wtrampolines |
711 | Common Var(warn_trampolines) Warning | |
a7b2e184 | 712 | Warn whenever a trampoline is generated. |
8ffadef9 | 713 | |
faebccf9 | 714 | Wtype-limits |
95744782 | 715 | Common Var(warn_type_limits) Warning EnabledBy(Wextra) |
a7b2e184 | 716 | Warn if a comparison is always true or always false due to the limited range of the data type. |
faebccf9 | 717 | |
e01cc6dc | 718 | Wuninitialized |
7d5a5747 | 719 | Common Var(warn_uninitialized) Warning EnabledBy(Wextra) |
a7b2e184 | 720 | Warn about uninitialized automatic variables. |
e01cc6dc | 721 | |
2f964ad6 | 722 | Wmaybe-uninitialized |
7d5a5747 | 723 | Common Var(warn_maybe_uninitialized) Warning EnabledBy(Wuninitialized) |
a7b2e184 | 724 | Warn about maybe uninitialized automatic variables. |
2f964ad6 | 725 | |
e01cc6dc | 726 | Wunreachable-code |
2d2bd949 | 727 | Common Ignore |
bc3c12a2 | 728 | Does nothing. Preserved for backward compatibility. |
e01cc6dc | 729 | |
903caebf | 730 | Wunused |
e73f7547 | 731 | Common Var(warn_unused) Init(0) Warning |
a7b2e184 | 732 | Enable all -Wunused- warnings. |
903caebf | 733 | |
ebfbbdc5 | 734 | Wunused-but-set-parameter |
d919140b | 735 | Common Var(warn_unused_but_set_parameter) Warning EnabledBy(Wunused && Wextra) |
a7b2e184 | 736 | Warn when a function parameter is only set, otherwise unused. |
ebfbbdc5 JJ |
737 | |
738 | Wunused-but-set-variable | |
7d5a5747 | 739 | Common Var(warn_unused_but_set_variable) Warning EnabledBy(Wunused) |
a7b2e184 | 740 | Warn when a variable is only set, otherwise unused. |
ebfbbdc5 | 741 | |
e01cc6dc | 742 | Wunused-function |
7d5a5747 | 743 | Common Var(warn_unused_function) Warning EnabledBy(Wunused) |
a7b2e184 | 744 | Warn when a function is unused. |
e01cc6dc NB |
745 | |
746 | Wunused-label | |
7d5a5747 | 747 | Common Var(warn_unused_label) Warning EnabledBy(Wunused) |
a7b2e184 | 748 | Warn when a label is unused. |
e01cc6dc NB |
749 | |
750 | Wunused-parameter | |
d919140b | 751 | Common Var(warn_unused_parameter) Warning EnabledBy(Wunused && Wextra) |
a7b2e184 | 752 | Warn when a function parameter is unused. |
e01cc6dc NB |
753 | |
754 | Wunused-value | |
7d5a5747 | 755 | Common Var(warn_unused_value) Warning EnabledBy(Wunused) |
a7b2e184 | 756 | Warn when an expression value is unused. |
e01cc6dc NB |
757 | |
758 | Wunused-variable | |
7d5a5747 | 759 | Common Var(warn_unused_variable) Warning EnabledBy(Wunused) |
a7b2e184 | 760 | Warn when a variable is unused. |
e01cc6dc | 761 | |
16c1c158 | 762 | Wcoverage-mismatch |
650cfcab | 763 | Common Var(warn_coverage_mismatch) Init(1) Warning |
a7b2e184 | 764 | Warn in case profiles in -fprofile-use do not match. |
16c1c158 | 765 | |
cdbb5ba3 AS |
766 | Wvector-operation-performance |
767 | Common Var(warn_vector_operation_performance) Warning | |
a7b2e184 | 768 | Warn when a vector operation is compiled outside the SIMD. |
cdbb5ba3 | 769 | |
603349bf JM |
770 | Xassembler |
771 | Driver Separate | |
772 | ||
773 | Xlinker | |
774 | Driver Separate | |
775 | ||
776 | Xpreprocessor | |
777 | Driver Separate | |
778 | ||
dd9f93dc JM |
779 | Z |
780 | Driver | |
781 | ||
d185d268 | 782 | aux-info |
d5478783 | 783 | Common Separate Var(aux_info_file_name) |
a7b2e184 | 784 | -aux-info <file> Emit declaration information into <file>. |
d185d268 NB |
785 | |
786 | aux-info= | |
5de8299c | 787 | Common Joined Alias(aux-info) |
d185d268 NB |
788 | |
789 | auxbase | |
d5478783 | 790 | Common Separate RejectDriver Var(aux_base_name) |
d185d268 NB |
791 | |
792 | auxbase-strip | |
603349bf JM |
793 | Common Separate RejectDriver |
794 | ||
e200444e JM |
795 | coverage |
796 | Driver | |
797 | ||
603349bf JM |
798 | c |
799 | Driver | |
d185d268 NB |
800 | |
801 | d | |
802 | Common Joined | |
a7b2e184 | 803 | -d<letters> Enable dumps from specific passes of the compiler. |
d185d268 NB |
804 | |
805 | dumpbase | |
d5478783 | 806 | Common Separate Var(dump_base_name) |
a7b2e184 | 807 | -dumpbase <file> Set the file basename to be used for dumps. |
d185d268 | 808 | |
d7fb0a6d | 809 | dumpdir |
d5478783 | 810 | Common Separate Var(dump_dir_name) |
a7b2e184 | 811 | -dumpdir <dir> Set the directory name to be used for dumps. |
d7fb0a6d | 812 | |
603349bf JM |
813 | dumpmachine |
814 | Driver | |
815 | ||
816 | dumpspecs | |
817 | Driver | |
818 | ||
819 | dumpversion | |
820 | Driver | |
821 | ||
e200444e JM |
822 | e |
823 | Driver Joined Separate | |
824 | ||
fa381cb2 JM |
825 | ; This option has historically been passed down to the linker by an |
826 | ; accident of a %{e*} spec, so ensure it continues to be passed down | |
827 | ; as a single option. The supported option for this purpose is | |
828 | ; -rdynamic. See PR 47390. | |
829 | export-dynamic | |
830 | Driver Undocumented | |
831 | ||
31b66477 KC |
832 | ; The version of the C++ ABI in use. The following values are allowed: |
833 | ; | |
834 | ; 0: The version of the ABI believed most conformant with the C++ ABI | |
835 | ; specification. This ABI may change as bugs are discovered and fixed. | |
836 | ; Therefore, 0 will not necessarily indicate the same ABI in different | |
837 | ; versions of G++. | |
838 | ; | |
90d84934 | 839 | ; 1: The version of the ABI first used in G++ 3.2. No longer selectable. |
31b66477 | 840 | ; |
785f21af JM |
841 | ; 2: The version of the ABI first used in G++ 3.4, and the default |
842 | ; until GCC 4.9. | |
abfe01ce JM |
843 | ; |
844 | ; 3: The version of the ABI that fixes the missing underscore | |
845 | ; in template non-type arguments of pointer type. | |
846 | ; | |
847 | ; 4: The version of the ABI that introduces unambiguous mangling of | |
55af847f | 848 | ; vector types. First selectable in G++ 4.5. |
99a8d35b | 849 | ; |
67e18edb | 850 | ; 5: The version of the ABI that ignores attribute const/noreturn |
55af847f | 851 | ; in function pointer mangling, and corrects mangling of decltype and |
67e18edb | 852 | ; function parameters used in other parameters and the return type. |
55af847f | 853 | ; First selectable in G++ 4.6. |
67e18edb | 854 | ; |
4b6aaa99 JM |
855 | ; 6: The version of the ABI that doesn't promote scoped enums to int and |
856 | ; changes the mangling of template argument packs, const/static_cast, | |
857 | ; prefix ++ and --, and a class scope function used as a template | |
858 | ; argument. | |
967444bb JM |
859 | ; First selectable in G++ 4.7. |
860 | ; | |
622aac0b JM |
861 | ; 7: The version of the ABI that treats nullptr_t as a builtin type and |
862 | ; corrects the mangling of lambdas in default argument scope. | |
a3ddb738 | 863 | ; First selectable in G++ 4.8. |
0861bec8 JM |
864 | ; |
865 | ; 8: The version of the ABI that corrects the substitution behavior of | |
866 | ; function types with function-cv-qualifiers. | |
603eaec4 JM |
867 | ; First selectable in G++ 4.9 and default in G++ 5. |
868 | ; | |
a03c9bf1 JM |
869 | ; 9: The version of the ABI that corrects the alignment of nullptr_t. |
870 | ; First selectable and default in G++ 5.2. | |
871 | ; | |
872 | ; 10: The version of the ABI that mangles attributes that affect type | |
873 | ; identity, such as ia32 calling convention attributes (stdcall, etc.) | |
874 | ; Default in G++ 6 (set in c_common_post_options). | |
0861bec8 | 875 | ; |
31b66477 KC |
876 | ; Additional positive integers will be assigned as new versions of |
877 | ; the ABI become the default version of the ABI. | |
57782ad8 | 878 | fabi-version= |
ca0e51a0 | 879 | Common Joined RejectNegative UInteger Var(flag_abi_version) Init(0) |
a7b2e184 | 880 | The version of the C++ ABI in use. |
57782ad8 | 881 | |
6e616110 | 882 | faggressive-loop-optimizations |
a7b2e184 MS |
883 | Common Report Var(flag_aggressive_loop_optimizations) Optimization Init(1) |
884 | Aggressively optimize loops using language constraints. | |
6e616110 | 885 | |
6ff3a151 | 886 | falign-functions |
ab442df7 | 887 | Common Report Var(align_functions,0) Optimization UInteger |
a7b2e184 | 888 | Align the start of functions. |
6ff3a151 | 889 | |
058de654 | 890 | falign-functions= |
d5478783 | 891 | Common RejectNegative Joined UInteger Var(align_functions) |
058de654 | 892 | |
6ff3a151 | 893 | falign-jumps |
ab442df7 | 894 | Common Report Var(align_jumps,0) Optimization UInteger |
a7b2e184 | 895 | Align labels which are only reached by jumping. |
6ff3a151 | 896 | |
058de654 | 897 | falign-jumps= |
d5478783 | 898 | Common RejectNegative Joined UInteger Var(align_jumps) |
058de654 | 899 | |
6ff3a151 | 900 | falign-labels |
ab442df7 | 901 | Common Report Var(align_labels,0) Optimization UInteger |
a7b2e184 | 902 | Align all labels. |
6ff3a151 | 903 | |
058de654 | 904 | falign-labels= |
d5478783 | 905 | Common RejectNegative Joined UInteger Var(align_labels) |
058de654 | 906 | |
6ff3a151 | 907 | falign-loops |
3020190e | 908 | Common Report Var(align_loops,0) Optimization UInteger |
a7b2e184 | 909 | Align the start of loops. |
6ff3a151 | 910 | |
058de654 | 911 | falign-loops= |
d5478783 | 912 | Common RejectNegative Joined UInteger Var(align_loops) |
058de654 | 913 | |
6ff3a151 | 914 | fargument-alias |
2d2bd949 | 915 | Common Ignore |
0d3c82d6 | 916 | Does nothing. Preserved for backward compatibility. |
6ff3a151 NB |
917 | |
918 | fargument-noalias | |
2d2bd949 | 919 | Common Ignore |
0d3c82d6 | 920 | Does nothing. Preserved for backward compatibility. |
6ff3a151 NB |
921 | |
922 | fargument-noalias-global | |
2d2bd949 | 923 | Common Ignore |
0d3c82d6 | 924 | Does nothing. Preserved for backward compatibility. |
6ff3a151 | 925 | |
0698a1d2 | 926 | fargument-noalias-anything |
2d2bd949 | 927 | Common Ignore |
0d3c82d6 | 928 | Does nothing. Preserved for backward compatibility. |
0698a1d2 | 929 | |
de5a5fa1 MP |
930 | fsanitize= |
931 | Common Driver Report Joined | |
a7b2e184 | 932 | Select what to sanitize. |
32b4b7f5 | 933 | |
fd960af2 YG |
934 | fasan-shadow-offset= |
935 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
936 | -fasan-shadow-offset=<number> Use custom shadow memory offset. | |
937 | ||
18af8d16 YG |
938 | fsanitize-sections= |
939 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
940 | -fsanitize-sections=<sec1,sec2,...> Sanitize global variables | |
941 | in user-defined sections. | |
942 | ||
d95a2703 JJ |
943 | fsanitize-recover= |
944 | Common Report Joined | |
a7b2e184 | 945 | After diagnosing undefined behavior attempt to continue execution. |
1c33c9b7 | 946 | |
d95a2703 JJ |
947 | fsanitize-recover |
948 | Common Report | |
a7b2e184 | 949 | This switch is deprecated; use -fsanitize-recover= instead. |
d95a2703 | 950 | |
1c33c9b7 | 951 | fsanitize-undefined-trap-on-error |
0115b91d | 952 | Common Driver Report Var(flag_sanitize_undefined_trap_on_error) Init(0) |
a7b2e184 | 953 | Use trap instead of a library function for undefined behavior sanitization. |
1c33c9b7 | 954 | |
6ff3a151 | 955 | fasynchronous-unwind-tables |
c662432e | 956 | Common Report Var(flag_asynchronous_unwind_tables) Optimization |
a7b2e184 | 957 | Generate unwind tables that are exact at each instruction boundary. |
6ff3a151 | 958 | |
6fb5fa3c | 959 | fauto-inc-dec |
b16650ac | 960 | Common Report Var(flag_auto_inc_dec) Init(1) Optimization |
a7b2e184 | 961 | Generate auto-inc/dec instructions. |
6fb5fa3c | 962 | |
be3c16c4 | 963 | fauto-profile |
b16650ac | 964 | Common Report Var(flag_auto_profile) |
be3c16c4 DC |
965 | Use sample profile information for call graph node weights. The default |
966 | profile file is fbdata.afdo in 'pwd'. | |
967 | ||
968 | fauto-profile= | |
969 | Common Joined RejectNegative Var(auto_profile_file) | |
970 | Use sample profile information for call graph node weights. The profile | |
971 | file is specified in the argument. | |
972 | ||
31b66477 KC |
973 | ; -fcheck-bounds causes gcc to generate array bounds checks. |
974 | ; For C, C++ and ObjC: defaults off. | |
975 | ; For Java: defaults to on. | |
976 | ; For Fortran: defaults to off. | |
6ff3a151 | 977 | fbounds-check |
50431bc4 | 978 | Common Report Var(flag_bounds_check) |
a7b2e184 | 979 | Generate code to check bounds before indexing arrays. |
6ff3a151 NB |
980 | |
981 | fbranch-count-reg | |
14379e66 | 982 | Common Report Var(flag_branch_on_count_reg) Optimization |
a7b2e184 | 983 | Replace add, compare, branch with branch on count register. |
6ff3a151 NB |
984 | |
985 | fbranch-probabilities | |
c662432e | 986 | Common Report Var(flag_branch_probabilities) Optimization |
a7b2e184 | 987 | Use profiling information for branch probabilities. |
6ff3a151 | 988 | |
de32c0cb | 989 | fbranch-target-load-optimize |
c662432e | 990 | Common Report Var(flag_branch_target_load_optimize) Optimization |
a7b2e184 | 991 | Perform branch target load optimization before prologue / epilogue threading. |
de32c0cb NB |
992 | |
993 | fbranch-target-load-optimize2 | |
c662432e | 994 | Common Report Var(flag_branch_target_load_optimize2) Optimization |
a7b2e184 | 995 | Perform branch target load optimization after prologue / epilogue threading. |
de32c0cb | 996 | |
1194fc79 | 997 | fbtr-bb-exclusive |
c662432e | 998 | Common Report Var(flag_btr_bb_exclusive) Optimization |
a7b2e184 | 999 | Restrict target load migration not to re-use registers in any basic block. |
1194fc79 | 1000 | |
058de654 | 1001 | fcall-saved- |
21bf1558 | 1002 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 1003 | -fcall-saved-<register> Mark <register> as being preserved across functions. |
058de654 NB |
1004 | |
1005 | fcall-used- | |
21bf1558 | 1006 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 1007 | -fcall-used-<register> Mark <register> as being corrupted by function calls. |
058de654 | 1008 | |
31b66477 KC |
1009 | ; Nonzero for -fcaller-saves: allocate values in regs that need to |
1010 | ; be saved across function calls, if that produces overall better code. | |
1011 | ; Optional now, so people can test it. | |
de32c0cb | 1012 | fcaller-saves |
c662432e | 1013 | Common Report Var(flag_caller_saves) Optimization |
a7b2e184 | 1014 | Save registers around function calls. |
de32c0cb | 1015 | |
3d8864c0 SP |
1016 | fcheck-data-deps |
1017 | Common Report Var(flag_check_data_deps) | |
49b8fe6c | 1018 | This switch is deprecated; do not use. |
3d8864c0 | 1019 | |
2284b034 MG |
1020 | fcheck-new |
1021 | Common Var(flag_check_new) | |
a7b2e184 | 1022 | Check the return value of new in C++. |
2284b034 | 1023 | |
6d27d749 RB |
1024 | fchecking |
1025 | Common Var(flag_checking) Init(CHECKING_P) | |
1026 | Perform internal consistency checkings. | |
1027 | ||
ccaeeafe NC |
1028 | fcombine-stack-adjustments |
1029 | Common Report Var(flag_combine_stack_adjustments) Optimization | |
1030 | Looks for opportunities to reduce stack adjustments and stack references. | |
1031 | ||
6ff3a151 | 1032 | fcommon |
b16650ac | 1033 | Common Report Var(flag_no_common,0) |
a7b2e184 | 1034 | Do not put uninitialized globals in the common section. |
6ff3a151 | 1035 | |
603349bf JM |
1036 | fcompare-debug |
1037 | Driver | |
1038 | ; Converted by the driver to -fcompare-debug= options. | |
1039 | ||
2153915d | 1040 | fcompare-debug= |
603349bf | 1041 | Common Driver JoinedOrMissing RejectNegative Var(flag_compare_debug_opt) |
a7b2e184 | 1042 | -fcompare-debug[=<opts>] Compile with and without e.g. -gtoggle, and compare the final-insns dump. |
2153915d AO |
1043 | |
1044 | fcompare-debug-second | |
5e471ea6 | 1045 | Common Driver RejectNegative Var(flag_compare_debug) |
a7b2e184 | 1046 | Run only the second compilation of -fcompare-debug. |
2153915d | 1047 | |
e692f276 RH |
1048 | fcompare-elim |
1049 | Common Report Var(flag_compare_elim_after_reload) Optimization | |
a7b2e184 | 1050 | Perform comparison elimination after register allocation has finished. |
e692f276 | 1051 | |
b5b8b0ac AO |
1052 | fconserve-stack |
1053 | Common Var(flag_conserve_stack) Optimization | |
a7b2e184 | 1054 | Do not perform optimizations increasing noticeably stack usage. |
b5b8b0ac | 1055 | |
6ff3a151 | 1056 | fcprop-registers |
c662432e | 1057 | Common Report Var(flag_cprop_registers) Optimization |
a7b2e184 | 1058 | Perform a register copy-propagation optimization pass. |
6ff3a151 | 1059 | |
de32c0cb | 1060 | fcrossjumping |
c662432e | 1061 | Common Report Var(flag_crossjumping) Optimization |
a7b2e184 | 1062 | Perform cross-jumping optimization. |
de32c0cb NB |
1063 | |
1064 | fcse-follow-jumps | |
c662432e | 1065 | Common Report Var(flag_cse_follow_jumps) Optimization |
a7b2e184 | 1066 | When running CSE, follow jumps to their targets. |
de32c0cb NB |
1067 | |
1068 | fcse-skip-blocks | |
2d2bd949 | 1069 | Common Ignore |
5f39ad47 | 1070 | Does nothing. Preserved for backward compatibility. |
de32c0cb | 1071 | |
c7463669 | 1072 | fcx-limited-range |
5e46b0c6 | 1073 | Common Report Var(flag_cx_limited_range) Optimization SetByCombined |
a7b2e184 | 1074 | Omit range reduction step when performing complex division. |
c7463669 | 1075 | |
35085f76 JB |
1076 | fcx-fortran-rules |
1077 | Common Report Var(flag_cx_fortran_rules) Optimization | |
a7b2e184 | 1078 | Complex multiplication and division follow Fortran rules. |
35085f76 | 1079 | |
6ff3a151 | 1080 | fdata-sections |
b16650ac | 1081 | Common Report Var(flag_data_sections) |
a7b2e184 | 1082 | Place data items into their own section. |
6ff3a151 | 1083 | |
0a090f42 | 1084 | fdbg-cnt-list |
299404a1 | 1085 | Common Report Var(common_deferred_options) Defer |
0a090f42 SP |
1086 | List all available debugging counters with their limits and counts. |
1087 | ||
6fb5fa3c | 1088 | fdbg-cnt= |
299404a1 | 1089 | Common RejectNegative Joined Var(common_deferred_options) Defer |
a7b2e184 | 1090 | -fdbg-cnt=<counter>:<limit>[,<counter>:<limit>,...] Set the debug counter limit. |
6fb5fa3c | 1091 | |
c8aea42c | 1092 | fdebug-prefix-map= |
299404a1 | 1093 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 1094 | Map one directory name to another in debug information. |
c8aea42c | 1095 | |
76f9db36 | 1096 | fdebug-types-section |
98095aa3 | 1097 | Common Report Var(flag_debug_types_section) Init(0) |
76f9db36 JJ |
1098 | Output .debug_types section when using DWARF v4 debuginfo. |
1099 | ||
31b66477 KC |
1100 | ; Nonzero for -fdefer-pop: don't pop args after each function call |
1101 | ; instead save them up to pop many calls' args with one insns. | |
de32c0cb | 1102 | fdefer-pop |
c662432e | 1103 | Common Report Var(flag_defer_pop) Optimization |
a7b2e184 | 1104 | Defer popping functions args from stack until later. |
de32c0cb NB |
1105 | |
1106 | fdelayed-branch | |
c662432e | 1107 | Common Report Var(flag_delayed_branch) Optimization |
a7b2e184 | 1108 | Attempt to fill delay slots of branch instructions. |
de32c0cb | 1109 | |
2da02156 | 1110 | fdelete-dead-exceptions |
b16650ac | 1111 | Common Report Var(flag_delete_dead_exceptions) Init(0) Optimization |
a7b2e184 | 1112 | Delete dead instructions that may throw exceptions. |
2da02156 | 1113 | |
de32c0cb | 1114 | fdelete-null-pointer-checks |
467d8d51 | 1115 | Common Report Var(flag_delete_null_pointer_checks) Init(-1) Optimization |
a7b2e184 | 1116 | Delete useless null pointer checks. |
de32c0cb | 1117 | |
1e29e4d3 JH |
1118 | fdevirtualize-at-ltrans |
1119 | Common Report Var(flag_ltrans_devirtualize) | |
a7b2e184 | 1120 | Stream extra data to support more aggressive devirtualization in LTO local transformation mode. |
1e29e4d3 | 1121 | |
bbc9396b JH |
1122 | fdevirtualize-speculatively |
1123 | Common Report Var(flag_devirtualize_speculatively) Optimization | |
a7b2e184 | 1124 | Perform speculative devirtualization. |
bbc9396b | 1125 | |
ca1eedf6 JH |
1126 | fdevirtualize |
1127 | Common Report Var(flag_devirtualize) Optimization | |
1128 | Try to convert virtual calls to direct ones. | |
1129 | ||
de32c0cb | 1130 | fdiagnostics-show-location= |
e6d4b984 | 1131 | Common Joined RejectNegative Enum(diagnostic_prefixing_rule) |
a7b2e184 | 1132 | -fdiagnostics-show-location=[once|every-line] How often to emit source location at the beginning of line-wrapped diagnostics. |
de32c0cb | 1133 | |
e6d4b984 JM |
1134 | ; Required for these enum values. |
1135 | SourceInclude | |
1136 | pretty-print.h | |
1137 | ||
1138 | Enum | |
1139 | Name(diagnostic_prefixing_rule) Type(int) | |
1140 | ||
1141 | EnumValue | |
1142 | Enum(diagnostic_prefixing_rule) String(once) Value(DIAGNOSTICS_SHOW_PREFIX_ONCE) | |
1143 | ||
1144 | EnumValue | |
1145 | Enum(diagnostic_prefixing_rule) String(every-line) Value(DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE) | |
1146 | ||
9fec0042 MLI |
1147 | fdiagnostics-show-caret |
1148 | Common Var(flag_diagnostics_show_caret) Init(1) | |
a7b2e184 | 1149 | Show the source line with a caret indicating the column. |
9fec0042 | 1150 | |
4b84d650 JJ |
1151 | fdiagnostics-color |
1152 | Common Alias(fdiagnostics-color=,always,never) | |
1153 | ; | |
1154 | ||
1155 | fdiagnostics-color= | |
97aa8bb6 | 1156 | Driver Common Joined RejectNegative Var(flag_diagnostics_show_color) Enum(diagnostic_color_rule) Init(DIAGNOSTICS_COLOR_NO) |
a7b2e184 | 1157 | -fdiagnostics-color=[never|always|auto] Colorize diagnostics. |
4b84d650 JJ |
1158 | |
1159 | ; Required for these enum values. | |
1160 | SourceInclude | |
1161 | diagnostic-color.h | |
1162 | ||
1163 | Enum | |
1164 | Name(diagnostic_color_rule) Type(int) | |
1165 | ||
1166 | EnumValue | |
1167 | Enum(diagnostic_color_rule) String(never) Value(DIAGNOSTICS_COLOR_NO) | |
1168 | ||
1169 | EnumValue | |
1170 | Enum(diagnostic_color_rule) String(always) Value(DIAGNOSTICS_COLOR_YES) | |
1171 | ||
1172 | EnumValue | |
1173 | Enum(diagnostic_color_rule) String(auto) Value(DIAGNOSTICS_COLOR_AUTO) | |
1174 | ||
ccf08a6e | 1175 | fdiagnostics-show-option |
c7d0de89 | 1176 | Common Var(flag_diagnostics_show_option) Init(1) |
a7b2e184 | 1177 | Amend appropriate diagnostic messages with the command line option that controls them. |
ccf08a6e | 1178 | |
226c52aa XDL |
1179 | fdisable- |
1180 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
a7b2e184 | 1181 | -fdisable-[tree|rtl|ipa]-<pass>=range1+range2 disables an optimization pass. |
226c52aa XDL |
1182 | |
1183 | fenable- | |
1184 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
a7b2e184 | 1185 | -fenable-[tree|rtl|ipa]-<pass>=range1+range2 enables an optimization pass. |
226c52aa | 1186 | |
6de9cd9a | 1187 | fdump- |
21bf1558 | 1188 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 1189 | -fdump-<type> Dump various compiler internals to a file. |
6de9cd9a | 1190 | |
d1583032 JM |
1191 | fdump-final-insns |
1192 | Driver RejectNegative | |
1193 | ||
2153915d AO |
1194 | fdump-final-insns= |
1195 | Common RejectNegative Joined Var(flag_dump_final_insns) | |
a7b2e184 | 1196 | -fdump-final-insns=filename Dump to filename the insns at the end of translation. |
2153915d | 1197 | |
c6a13190 ILT |
1198 | fdump-go-spec= |
1199 | Common RejectNegative Joined Var(flag_dump_go_spec) | |
a7b2e184 | 1200 | -fdump-go-spec=filename Write all declarations to file as Go code. |
c6a13190 | 1201 | |
24a7799e R |
1202 | fdump-noaddr |
1203 | Common Report Var(flag_dump_noaddr) | |
a7b2e184 | 1204 | Suppress output of addresses in debugging dumps. |
24a7799e | 1205 | |
dc10fd96 JJ |
1206 | freport-bug |
1207 | Common Driver Var(flag_report_bug) | |
1208 | Collect and dump debug information into temporary file if ICE in C/C++ | |
1209 | compiler occured. | |
1210 | ||
ba4ad400 DM |
1211 | fdump-internal-locations |
1212 | Common Var(flag_dump_locations) Init(0) | |
a7b2e184 | 1213 | Dump detailed information on GCC's internal representation of source code locations. |
ba4ad400 | 1214 | |
deced1e2 XDL |
1215 | fdump-passes |
1216 | Common Var(flag_dump_passes) Init(0) | |
a7b2e184 | 1217 | Dump optimization passes. |
deced1e2 | 1218 | |
6ff3a151 | 1219 | fdump-unnumbered |
e90afde6 | 1220 | Common Report Var(flag_dump_unnumbered) |
a7b2e184 | 1221 | Suppress output of instruction numbers, line number notes and addresses in debugging dumps. |
6ff3a151 | 1222 | |
2aa7c49b | 1223 | fdump-unnumbered-links |
e90afde6 | 1224 | Common Report Var(flag_dump_unnumbered_links) |
a7b2e184 | 1225 | Suppress output of previous and next insn numbers in debugging dumps. |
2aa7c49b | 1226 | |
b5b8b0ac AO |
1227 | fdwarf2-cfi-asm |
1228 | Common Report Var(flag_dwarf2_cfi_asm) Init(HAVE_GAS_CFI_DIRECTIVE) | |
1229 | Enable CFI tables via GAS assembler directives. | |
1230 | ||
355866de | 1231 | fearly-inlining |
c662432e | 1232 | Common Report Var(flag_early_inlining) Init(1) Optimization |
a7b2e184 | 1233 | Perform early inlining. |
355866de | 1234 | |
de32c0cb | 1235 | feliminate-dwarf2-dups |
50431bc4 | 1236 | Common Report Var(flag_eliminate_dwarf2_dups) |
a1a3812d | 1237 | Perform DWARF duplicate elimination. |
de32c0cb | 1238 | |
07ffa034 MJ |
1239 | fipa-sra |
1240 | Common Report Var(flag_ipa_sra) Init(0) Optimization | |
a7b2e184 | 1241 | Perform interprocedural reduction of aggregates. |
07ffa034 | 1242 | |
6a08f7b3 | 1243 | feliminate-unused-debug-symbols |
50431bc4 | 1244 | Common Report Var(flag_debug_only_used_symbols) |
a7b2e184 | 1245 | Perform unused symbol elimination in debug info. |
6a08f7b3 | 1246 | |
de32c0cb | 1247 | feliminate-unused-debug-types |
50431bc4 | 1248 | Common Report Var(flag_eliminate_unused_debug_types) Init(1) |
a7b2e184 | 1249 | Perform unused type elimination in debug info. |
de32c0cb | 1250 | |
e713adf6 | 1251 | femit-class-debug-always |
eae8e474 | 1252 | Common Report Var(flag_emit_class_debug_always) Init(0) |
e713adf6 CD |
1253 | Do not suppress C++ class debug information. |
1254 | ||
6ff3a151 | 1255 | fexceptions |
c662432e | 1256 | Common Report Var(flag_exceptions) Optimization |
a7b2e184 | 1257 | Enable exception handling. |
6ff3a151 | 1258 | |
de32c0cb | 1259 | fexpensive-optimizations |
c662432e | 1260 | Common Report Var(flag_expensive_optimizations) Optimization |
a7b2e184 | 1261 | Perform a number of minor, expensive optimizations. |
de32c0cb | 1262 | |
8ce94e44 | 1263 | fexcess-precision= |
e6d4b984 | 1264 | Common Joined RejectNegative Enum(excess_precision) Var(flag_excess_precision_cmdline) Init(EXCESS_PRECISION_DEFAULT) |
a7b2e184 | 1265 | -fexcess-precision=[fast|standard] Specify handling of excess floating-point precision. |
8ce94e44 | 1266 | |
e6d4b984 JM |
1267 | Enum |
1268 | Name(excess_precision) Type(enum excess_precision) UnknownError(unknown excess precision style %qs) | |
1269 | ||
1270 | EnumValue | |
1271 | Enum(excess_precision) String(fast) Value(EXCESS_PRECISION_FAST) | |
1272 | ||
1273 | EnumValue | |
1274 | Enum(excess_precision) String(standard) Value(EXCESS_PRECISION_STANDARD) | |
1275 | ||
058de654 NB |
1276 | ffast-math |
1277 | Common | |
1278 | ||
cc8547a7 | 1279 | ffat-lto-objects |
e9f67e62 | 1280 | Common Var(flag_fat_lto_objects) |
cc8547a7 AK |
1281 | Output lto objects containing both the intermediate language and binary output. |
1282 | ||
6ff3a151 | 1283 | ffinite-math-only |
5e46b0c6 | 1284 | Common Report Var(flag_finite_math_only) Optimization SetByCombined |
a7b2e184 | 1285 | Assume no NaNs or infinities are generated. |
6ff3a151 | 1286 | |
058de654 | 1287 | ffixed- |
21bf1558 | 1288 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 1289 | -ffixed-<register> Mark <register> as being unavailable to the compiler. |
058de654 | 1290 | |
de32c0cb | 1291 | ffloat-store |
c662432e | 1292 | Common Report Var(flag_float_store) Optimization |
a7b2e184 | 1293 | Don't allocate floats and doubles in extended-precision registers. |
de32c0cb NB |
1294 | |
1295 | fforce-addr | |
2d2bd949 | 1296 | Common Ignore |
3de5e93a | 1297 | Does nothing. Preserved for backward compatibility. |
de32c0cb | 1298 | |
2ca2b607 SB |
1299 | fforward-propagate |
1300 | Common Report Var(flag_forward_propagate) Optimization | |
a7b2e184 | 1301 | Perform a forward propagation pass on RTL. |
a52b023a | 1302 | |
16949072 | 1303 | ffp-contract= |
bea30e0d | 1304 | Common Joined RejectNegative Enum(fp_contract_mode) Var(flag_fp_contract_mode) Init(FP_CONTRACT_FAST) Optimization |
16949072 RG |
1305 | -ffp-contract=[off|on|fast] Perform floating-point expression contraction. |
1306 | ||
e6d4b984 JM |
1307 | Enum |
1308 | Name(fp_contract_mode) Type(enum fp_contract_mode) UnknownError(unknown floating point contraction style %qs) | |
1309 | ||
1310 | EnumValue | |
1311 | Enum(fp_contract_mode) String(off) Value(FP_CONTRACT_OFF) | |
1312 | ||
1313 | ; Not implemented, fall back to conservative FP_CONTRACT_OFF. | |
1314 | EnumValue | |
1315 | Enum(fp_contract_mode) String(on) Value(FP_CONTRACT_OFF) | |
1316 | ||
1317 | EnumValue | |
1318 | Enum(fp_contract_mode) String(fast) Value(FP_CONTRACT_FAST) | |
1319 | ||
31b66477 KC |
1320 | ; Nonzero means don't put addresses of constant functions in registers. |
1321 | ; Used for compiling the Unix kernel, where strange substitutions are | |
1322 | ; done on the assembly output. | |
de32c0cb | 1323 | ffunction-cse |
b16650ac | 1324 | Common Report Var(flag_no_function_cse,0) Optimization |
a7b2e184 | 1325 | Allow function addresses to be held in registers. |
de32c0cb | 1326 | |
6ff3a151 | 1327 | ffunction-sections |
50431bc4 | 1328 | Common Report Var(flag_function_sections) |
a7b2e184 | 1329 | Place each function into its own section. |
6ff3a151 | 1330 | |
de32c0cb | 1331 | fgcse |
c662432e | 1332 | Common Report Var(flag_gcse) Optimization |
a7b2e184 | 1333 | Perform global common subexpression elimination. |
de32c0cb NB |
1334 | |
1335 | fgcse-lm | |
c662432e | 1336 | Common Report Var(flag_gcse_lm) Init(1) Optimization |
a7b2e184 | 1337 | Perform enhanced load motion during global common subexpression elimination. |
de32c0cb NB |
1338 | |
1339 | fgcse-sm | |
c662432e | 1340 | Common Report Var(flag_gcse_sm) Init(0) Optimization |
a7b2e184 | 1341 | Perform store motion after global common subexpression elimination. |
de32c0cb | 1342 | |
f5f2e3cd | 1343 | fgcse-las |
c662432e | 1344 | Common Report Var(flag_gcse_las) Init(0) Optimization |
f9957958 | 1345 | Perform redundant load after store elimination in global common subexpression |
a7b2e184 | 1346 | elimination. |
f9957958 MH |
1347 | |
1348 | fgcse-after-reload | |
c662432e | 1349 | Common Report Var(flag_gcse_after_reload) Optimization |
a7b2e184 MS |
1350 | Perform global common subexpression elimination after register allocation has |
1351 | finished. | |
f5f2e3cd | 1352 | |
6592d14b PMR |
1353 | Enum |
1354 | Name(dwarf_gnat_encodings) Type(int) | |
1355 | ||
1356 | EnumValue | |
1357 | Enum(dwarf_gnat_encodings) String(all) Value(DWARF_GNAT_ENCODINGS_ALL) | |
1358 | ||
1359 | EnumValue | |
1360 | Enum(dwarf_gnat_encodings) String(gdb) Value(DWARF_GNAT_ENCODINGS_GDB) | |
1361 | ||
1362 | EnumValue | |
1363 | Enum(dwarf_gnat_encodings) String(minimal) Value(DWARF_GNAT_ENCODINGS_MINIMAL) | |
1364 | ||
1365 | fgnat-encodings= | |
1366 | Common Enum(dwarf_gnat_encodings) Joined RejectNegative Report Undocumented Var(gnat_encodings) | |
1367 | -fgnat-encodings=[all|gdb|minimal] Select the balance between GNAT encodings and standard DWARF emitted in the debug information | |
1368 | ||
d0a58904 | 1369 | ; This option is not documented yet as its semantics will change. |
f8bf9252 | 1370 | fgraphite |
ff6a32a9 | 1371 | Common Report Var(flag_graphite) Optimization |
a7b2e184 | 1372 | Enable in and out of Graphite representation. |
f8bf9252 | 1373 | |
204b560f SP |
1374 | fgraphite-identity |
1375 | Common Report Var(flag_graphite_identity) Optimization | |
a7b2e184 | 1376 | Enable Graphite Identity transformation. |
204b560f | 1377 | |
372a6eb8 BS |
1378 | fhoist-adjacent-loads |
1379 | Common Report Var(flag_hoist_adjacent_loads) Optimization | |
1380 | Enable hoisting adjacent loads to encourage generating conditional move | |
a7b2e184 | 1381 | instructions. |
372a6eb8 | 1382 | |
3cf0e270 SP |
1383 | floop-parallelize-all |
1384 | Common Report Var(flag_loop_parallelize_all) Optimization | |
a7b2e184 | 1385 | Mark all loops as parallel. |
204b560f | 1386 | |
f8bf9252 | 1387 | floop-strip-mine |
d6bb5ccf | 1388 | Common Alias(floop-nest-optimize) |
a7b2e184 | 1389 | Enable loop nest transforms. Same as -floop-nest-optimize. |
f8bf9252 SP |
1390 | |
1391 | floop-interchange | |
d6bb5ccf | 1392 | Common Alias(floop-nest-optimize) |
a7b2e184 | 1393 | Enable loop nest transforms. Same as -floop-nest-optimize. |
f8bf9252 SP |
1394 | |
1395 | floop-block | |
d6bb5ccf | 1396 | Common Alias(floop-nest-optimize) |
a7b2e184 | 1397 | Enable loop nest transforms. Same as -floop-nest-optimize. |
f8bf9252 | 1398 | |
20d3465b | 1399 | floop-unroll-and-jam |
a5e5ea0c | 1400 | Common Alias(floop-nest-optimize) |
a7b2e184 MS |
1401 | Enable loop nest transforms. Same as -floop-nest-optimize. |
1402 | ||
0a35513e AH |
1403 | fgnu-tm |
1404 | Common Report Var(flag_tm) | |
a7b2e184 | 1405 | Enable support for GNU transactional memory. |
0a35513e | 1406 | |
da34ade5 JM |
1407 | fgnu-unique |
1408 | Common Report Var(flag_gnu_unique) Init(1) | |
a7b2e184 | 1409 | Use STB_GNU_UNIQUE if supported by the assembler. |
da34ade5 | 1410 | |
98af4c9f | 1411 | floop-flatten |
093193be MK |
1412 | Common Ignore |
1413 | Does nothing. Preserved for backward compatibility. | |
98af4c9f | 1414 | |
b60cc080 | 1415 | floop-nest-optimize |
84c36240 | 1416 | Common Report Var(flag_loop_nest_optimize) Optimization |
e357a5e0 | 1417 | Enable the loop nest optimizer. |
b60cc080 | 1418 | |
6a78b724 | 1419 | fstrict-volatile-bitfields |
b16650ac | 1420 | Common Report Var(flag_strict_volatile_bitfields) Init(-1) Optimization |
a7b2e184 | 1421 | Force bitfield accesses to match their type width. |
6a78b724 | 1422 | |
6ff3a151 | 1423 | fguess-branch-probability |
c662432e | 1424 | Common Report Var(flag_guess_branch_prob) Optimization |
a7b2e184 | 1425 | Enable guessing of branch probabilities. |
6ff3a151 | 1426 | |
31b66477 KC |
1427 | ; Nonzero means ignore `#ident' directives. 0 means handle them. |
1428 | ; Generate position-independent code for executables if possible | |
1429 | ; On SVR4 targets, it also controls whether or not to emit a | |
1430 | ; string identifying the compiler. | |
6ff3a151 | 1431 | fident |
50431bc4 | 1432 | Common Report Var(flag_no_ident,0) |
a7b2e184 | 1433 | Process #ident directives. |
6ff3a151 | 1434 | |
de32c0cb | 1435 | fif-conversion |
c662432e | 1436 | Common Report Var(flag_if_conversion) Optimization |
a7b2e184 | 1437 | Perform conversion of conditional jumps to branchless equivalents. |
de32c0cb NB |
1438 | |
1439 | fif-conversion2 | |
c662432e | 1440 | Common Report Var(flag_if_conversion2) Optimization |
a7b2e184 | 1441 | Perform conversion of conditional jumps to conditional execution. |
de32c0cb | 1442 | |
87e2a8fd | 1443 | fstack-reuse= |
082908e3 | 1444 | Common Joined RejectNegative Enum(stack_reuse_level) Var(flag_stack_reuse) Init(SR_ALL) Optimization |
87e2a8fd XDL |
1445 | -fstack-reuse=[all|named_vars|none] Set stack reuse level for local variables. |
1446 | ||
1447 | Enum | |
1448 | Name(stack_reuse_level) Type(enum stack_reuse_level) UnknownError(unknown Stack Reuse Level %qs) | |
1449 | ||
1450 | EnumValue | |
1451 | Enum(stack_reuse_level) String(all) Value(SR_ALL) | |
1452 | ||
1453 | EnumValue | |
1454 | Enum(stack_reuse_level) String(named_vars) Value(SR_NAMED_VARS) | |
1455 | ||
1456 | EnumValue | |
1457 | Enum(stack_reuse_level) String(none) Value(SR_NONE) | |
1458 | ||
384a5197 SP |
1459 | ftree-loop-if-convert |
1460 | Common Report Var(flag_tree_loop_if_convert) Init(-1) Optimization | |
a7b2e184 | 1461 | Convert conditional jumps in innermost loops to branchless equivalents. |
384a5197 | 1462 | |
bd544141 SP |
1463 | ftree-loop-if-convert-stores |
1464 | Common Report Var(flag_tree_loop_if_convert_stores) Optimization | |
a7b2e184 | 1465 | Also if-convert conditional jumps containing memory writes. |
bd544141 | 1466 | |
31b66477 KC |
1467 | ; -finhibit-size-directive inhibits output of .size for ELF. |
1468 | ; This is used only for compiling crtstuff.c, | |
1469 | ; and it may be extended to other effects | |
1470 | ; needed for crtstuff.c on other systems. | |
6ff3a151 | 1471 | finhibit-size-directive |
50431bc4 | 1472 | Common Report Var(flag_inhibit_size_directive) |
a7b2e184 | 1473 | Do not generate .size directives. |
6ff3a151 | 1474 | |
3e293154 | 1475 | findirect-inlining |
2bf86c84 | 1476 | Common Report Var(flag_indirect_inlining) Optimization |
a7b2e184 | 1477 | Perform indirect inlining. |
3e293154 | 1478 | |
99ea07f8 RG |
1479 | ; General flag to enable inlining. Specifying -fno-inline will disable |
1480 | ; all inlining apart from always-inline functions. | |
de32c0cb | 1481 | finline |
0f042bc5 | 1482 | Common Report Var(flag_no_inline,0) Init(0) Optimization |
a7b2e184 | 1483 | Enable inlining of function declared \"inline\", disabling disables all inlining. |
de32c0cb | 1484 | |
4d4b8cb9 JH |
1485 | finline-small-functions |
1486 | Common Report Var(flag_inline_small_functions) Optimization | |
a7b2e184 | 1487 | Integrate functions into their callers when code size is known not to grow. |
4d4b8cb9 | 1488 | |
de32c0cb | 1489 | finline-functions |
c662432e | 1490 | Common Report Var(flag_inline_functions) Optimization |
a7b2e184 | 1491 | Integrate functions not declared \"inline\" into their callers when profitable. |
de32c0cb | 1492 | |
355866de | 1493 | finline-functions-called-once |
fb37c1de | 1494 | Common Report Var(flag_inline_functions_called_once) Optimization |
a7b2e184 | 1495 | Integrate functions only required by their single caller. |
d63db217 | 1496 | |
d302c9d6 | 1497 | finline-limit- |
5de8299c | 1498 | Common RejectNegative Joined Alias(finline-limit=) |
d302c9d6 NB |
1499 | |
1500 | finline-limit= | |
1501 | Common RejectNegative Joined UInteger | |
a7b2e184 | 1502 | -finline-limit=<number> Limit the size of inlined functions to <number>. |
d302c9d6 | 1503 | |
86951993 AM |
1504 | finline-atomics |
1505 | Common Report Var(flag_inline_atomics) Init(1) Optimization | |
1506 | Inline __atomic operations when a lock free instruction sequence is available. | |
1507 | ||
6ff3a151 | 1508 | finstrument-functions |
50431bc4 | 1509 | Common Report Var(flag_instrument_function_entry_exit) |
a7b2e184 | 1510 | Instrument function entry and exit with profiling calls. |
6ff3a151 | 1511 | |
8d5a7d1f ILT |
1512 | finstrument-functions-exclude-function-list= |
1513 | Common RejectNegative Joined | |
a7b2e184 | 1514 | -finstrument-functions-exclude-function-list=name,... Do not instrument listed functions. |
8d5a7d1f ILT |
1515 | |
1516 | finstrument-functions-exclude-file-list= | |
1517 | Common RejectNegative Joined | |
a7b2e184 | 1518 | -finstrument-functions-exclude-file-list=filename,... Do not instrument functions listed in files. |
8d5a7d1f | 1519 | |
d6e14e8f | 1520 | fipa-cp |
c662432e | 1521 | Common Report Var(flag_ipa_cp) Optimization |
a7b2e184 | 1522 | Perform interprocedural constant propagation. |
d6e14e8f | 1523 | |
5e45130d JH |
1524 | fipa-cp-clone |
1525 | Common Report Var(flag_ipa_cp_clone) Optimization | |
a7b2e184 | 1526 | Perform cloning to make Interprocedural constant propagation stronger. |
5e45130d | 1527 | |
3c99176a L |
1528 | fipa-cp-alignment |
1529 | Common Report Var(flag_ipa_cp_alignment) Optimization | |
a7b2e184 | 1530 | Perform alignment discovery and propagation to make Interprocedural constant propagation stronger. |
3c99176a | 1531 | |
e65bb9be JH |
1532 | fipa-profile |
1533 | Common Report Var(flag_ipa_profile) Init(0) Optimization | |
a7b2e184 | 1534 | Perform interprocedural profile propagation. |
ea900239 | 1535 | |
4cf4d6a3 | 1536 | fipa-pta |
c662432e | 1537 | Common Report Var(flag_ipa_pta) Init(0) Optimization |
a7b2e184 | 1538 | Perform interprocedural points-to analysis. |
4cf4d6a3 | 1539 | |
e65bb9be JH |
1540 | fipa-pure-const |
1541 | Common Report Var(flag_ipa_pure_const) Init(0) Optimization | |
a7b2e184 | 1542 | Discover pure and const functions. |
e65bb9be | 1543 | |
b84d4347 ML |
1544 | fipa-icf |
1545 | Common Report Var(flag_ipa_icf) Optimization | |
a7b2e184 | 1546 | Perform Identical Code Folding for functions and read-only variables. |
b84d4347 ML |
1547 | |
1548 | fipa-icf-functions | |
1549 | Common Report Var(flag_ipa_icf_functions) Optimization | |
a7b2e184 | 1550 | Perform Identical Code Folding for functions. |
b84d4347 ML |
1551 | |
1552 | fipa-icf-variables | |
b16650ac | 1553 | Common Report Var(flag_ipa_icf_variables) |
a7b2e184 | 1554 | Perform Identical Code Folding for variables. |
b84d4347 | 1555 | |
ea900239 | 1556 | fipa-reference |
c662432e | 1557 | Common Report Var(flag_ipa_reference) Init(0) Optimization |
a7b2e184 | 1558 | Discover readonly and non addressable static variables. |
ea900239 | 1559 | |
43d861a5 | 1560 | fipa-matrix-reorg |
04f92ff4 RG |
1561 | Common Ignore |
1562 | Does nothing. Preserved for backward compatibility. | |
43d861a5 | 1563 | |
e1dc98b2 | 1564 | fipa-struct-reorg |
b8beb4d1 RG |
1565 | Common Ignore |
1566 | Does nothing. Preserved for backward compatibility. | |
e1dc98b2 | 1567 | |
058e97ec | 1568 | fira-algorithm= |
b16650ac | 1569 | Common Joined RejectNegative Enum(ira_algorithm) Var(flag_ira_algorithm) Init(IRA_ALGORITHM_CB) Optimization |
a7b2e184 | 1570 | -fira-algorithm=[CB|priority] Set the used IRA algorithm. |
7db7ed3c | 1571 | |
e6d4b984 JM |
1572 | Enum |
1573 | Name(ira_algorithm) Type(enum ira_algorithm) UnknownError(unknown IRA algorithm %qs) | |
1574 | ||
1575 | EnumValue | |
1576 | Enum(ira_algorithm) String(CB) Value(IRA_ALGORITHM_CB) | |
1577 | ||
1578 | EnumValue | |
1579 | Enum(ira_algorithm) String(priority) Value(IRA_ALGORITHM_PRIORITY) | |
1580 | ||
7db7ed3c | 1581 | fira-region= |
b16650ac | 1582 | Common Joined RejectNegative Enum(ira_region) Var(flag_ira_region) Init(IRA_REGION_AUTODETECT) Optimization |
a7b2e184 | 1583 | -fira-region=[one|all|mixed] Set regions for IRA. |
058e97ec | 1584 | |
e6d4b984 JM |
1585 | Enum |
1586 | Name(ira_region) Type(enum ira_region) UnknownError(unknown IRA region %qs) | |
1587 | ||
1588 | EnumValue | |
1589 | Enum(ira_region) String(one) Value(IRA_REGION_ONE) | |
1590 | ||
1591 | EnumValue | |
1592 | Enum(ira_region) String(all) Value(IRA_REGION_ALL) | |
1593 | ||
1594 | EnumValue | |
1595 | Enum(ira_region) String(mixed) Value(IRA_REGION_MIXED) | |
1596 | ||
b11f0116 BC |
1597 | fira-hoist-pressure |
1598 | Common Report Var(flag_ira_hoist_pressure) Init(1) Optimization | |
1599 | Use IRA based register pressure calculation | |
1600 | in RTL hoist optimizations. | |
1601 | ||
1833192f | 1602 | fira-loop-pressure |
f3d83ffe | 1603 | Common Report Var(flag_ira_loop_pressure) Optimization |
1833192f VM |
1604 | Use IRA based register pressure calculation |
1605 | in RTL loop optimizations. | |
1606 | ||
058e97ec | 1607 | fira-share-save-slots |
b16650ac | 1608 | Common Report Var(flag_ira_share_save_slots) Init(1) Optimization |
058e97ec VM |
1609 | Share slots for saving different hard registers. |
1610 | ||
1611 | fira-share-spill-slots | |
b16650ac | 1612 | Common Report Var(flag_ira_share_spill_slots) Init(1) Optimization |
058e97ec VM |
1613 | Share stack slots for spilled pseudo-registers. |
1614 | ||
1615 | fira-verbose= | |
5498f011 | 1616 | Common RejectNegative Joined UInteger Var(flag_ira_verbose) Init(5) |
f94e1d66 | 1617 | -fira-verbose=<number> Control IRA's level of diagnostic messages. |
058e97ec | 1618 | |
8b11a64c | 1619 | fivopts |
c662432e | 1620 | Common Report Var(flag_ivopts) Init(1) Optimization |
a7b2e184 | 1621 | Optimize induction variables on trees. |
8b11a64c | 1622 | |
82c0180d | 1623 | fjump-tables |
c662432e | 1624 | Common Var(flag_jump_tables) Init(1) Optimization |
a7b2e184 | 1625 | Use jump tables for sufficiently large switch statements. |
82c0180d | 1626 | |
de32c0cb | 1627 | fkeep-inline-functions |
50431bc4 | 1628 | Common Report Var(flag_keep_inline_functions) |
a7b2e184 | 1629 | Generate code for functions even if they are fully inlined. |
de32c0cb | 1630 | |
787da5fd JV |
1631 | fkeep-static-functions |
1632 | Common Report Var(flag_keep_static_functions) | |
a7b2e184 | 1633 | Generate code for static functions even if they are never called. |
787da5fd | 1634 | |
de32c0cb | 1635 | fkeep-static-consts |
50431bc4 | 1636 | Common Report Var(flag_keep_static_consts) Init(1) |
a7b2e184 | 1637 | Emit static const variables even if they are not used. |
de32c0cb | 1638 | |
6ff3a151 | 1639 | fleading-underscore |
50431bc4 | 1640 | Common Report Var(flag_leading_underscore) Init(-1) |
a7b2e184 | 1641 | Give external symbols a leading underscore. |
6ff3a151 | 1642 | |
efa1cdf0 | 1643 | floop-optimize |
2d2bd949 | 1644 | Common Ignore |
c0220ea4 | 1645 | Does nothing. Preserved for backward compatibility. |
efa1cdf0 | 1646 | |
d9cf932c VM |
1647 | flra-remat |
1648 | Common Report Var(flag_lra_remat) Optimization | |
a7b2e184 | 1649 | Do CFG-sensitive rematerialization in LRA. |
d9cf932c | 1650 | |
d7f09764 | 1651 | flto |
014d92e1 | 1652 | Common |
d7f09764 DN |
1653 | Enable link-time optimization. |
1654 | ||
014d92e1 JH |
1655 | flto= |
1656 | Common RejectNegative Joined Var(flag_lto) | |
1657 | Link-time optimization with number of parallel jobs or jobserver. | |
1658 | ||
783dab6b RB |
1659 | Enum |
1660 | Name(lto_partition_model) Type(enum lto_partition_model) UnknownError(unknown LTO partitioning model %qs) | |
852e4bd2 | 1661 | |
783dab6b RB |
1662 | EnumValue |
1663 | Enum(lto_partition_model) String(none) Value(LTO_PARTITION_NONE) | |
852e4bd2 | 1664 | |
783dab6b RB |
1665 | EnumValue |
1666 | Enum(lto_partition_model) String(one) Value(LTO_PARTITION_ONE) | |
1667 | ||
1668 | EnumValue | |
1669 | Enum(lto_partition_model) String(balanced) Value(LTO_PARTITION_BALANCED) | |
1670 | ||
1671 | EnumValue | |
1672 | Enum(lto_partition_model) String(1to1) Value(LTO_PARTITION_1TO1) | |
1673 | ||
1674 | EnumValue | |
1675 | Enum(lto_partition_model) String(max) Value(LTO_PARTITION_MAX) | |
c3c445e1 | 1676 | |
783dab6b RB |
1677 | flto-partition= |
1678 | Common Joined RejectNegative Enum(lto_partition_model) Var(flag_lto_partition) Init(LTO_PARTITION_BALANCED) | |
a7b2e184 | 1679 | Specify the algorithm to partition symbols and vars at linktime. |
014d92e1 | 1680 | |
d7f09764 DN |
1681 | ; The initial value of -1 comes from Z_DEFAULT_COMPRESSION in zlib.h. |
1682 | flto-compression-level= | |
fcfbd84e | 1683 | Common Joined RejectNegative UInteger Var(flag_lto_compression_level) Init(-1) |
a7b2e184 | 1684 | -flto-compression-level=<number> Use zlib compression level <number> for IL. |
d7f09764 | 1685 | |
1ee85ee1 JH |
1686 | flto-odr-type-merging |
1687 | Common Report Var(flag_lto_odr_type_mering) Init(1) | |
a7b2e184 | 1688 | Merge C++ types using One Definition Rule. |
1ee85ee1 | 1689 | |
d7f09764 | 1690 | flto-report |
1d67dde8 | 1691 | Common Report Var(flag_lto_report) Init(0) |
a7b2e184 | 1692 | Report various link-time optimization statistics. |
d7f09764 | 1693 | |
057f8f20 AK |
1694 | flto-report-wpa |
1695 | Common Report Var(flag_lto_report_wpa) Init(0) | |
a7b2e184 | 1696 | Report various link-time optimization statistics for WPA only. |
057f8f20 | 1697 | |
6ff3a151 | 1698 | fmath-errno |
5e46b0c6 | 1699 | Common Report Var(flag_errno_math) Init(1) Optimization SetByCombined |
a7b2e184 | 1700 | Set errno after built-in math functions. |
6ff3a151 | 1701 | |
3a789837 NF |
1702 | fmax-errors= |
1703 | Common Joined RejectNegative UInteger Var(flag_max_errors) | |
a7b2e184 | 1704 | -fmax-errors=<number> Maximum number of errors to report. |
3a789837 | 1705 | |
6ff3a151 | 1706 | fmem-report |
50431bc4 | 1707 | Common Report Var(mem_report) |
a7b2e184 | 1708 | Report on permanent memory allocation. |
6ff3a151 | 1709 | |
b3e44629 AK |
1710 | fmem-report-wpa |
1711 | Common Report Var(mem_report_wpa) | |
a7b2e184 | 1712 | Report on permanent memory allocation in WPA only. |
b3e44629 | 1713 | |
31b66477 KC |
1714 | ; This will attempt to merge constant section constants, if 1 only |
1715 | ; string constants and constants from constant pool, if 2 also constant | |
1716 | ; variables. | |
6ff3a151 | 1717 | fmerge-all-constants |
0a7246ee | 1718 | Common Report Var(flag_merge_constants,2) Init(1) |
a7b2e184 | 1719 | Attempt to merge identical constants and constant variables. |
6ff3a151 NB |
1720 | |
1721 | fmerge-constants | |
0a7246ee | 1722 | Common Report Var(flag_merge_constants,1) |
a7b2e184 | 1723 | Attempt to merge identical constants across compilation units. |
6ff3a151 | 1724 | |
28a08168 ILT |
1725 | fmerge-debug-strings |
1726 | Common Report Var(flag_merge_debug_strings) Init(1) | |
a7b2e184 | 1727 | Attempt to merge identical debug strings across compilation units. |
28a08168 | 1728 | |
de32c0cb NB |
1729 | fmessage-length= |
1730 | Common RejectNegative Joined UInteger | |
a7b2e184 | 1731 | -fmessage-length=<number> Limit diagnostics to <number> characters per line. 0 suppresses line-wrapping. |
de32c0cb | 1732 | |
e5626198 | 1733 | fmodulo-sched |
c662432e | 1734 | Common Report Var(flag_modulo_sched) Optimization |
a7b2e184 | 1735 | Perform SMS based modulo scheduling before the first scheduling pass. |
e5626198 | 1736 | |
517d76fa | 1737 | fmodulo-sched-allow-regmoves |
b16650ac | 1738 | Common Report Var(flag_modulo_sched_allow_regmoves) Optimization |
a7b2e184 | 1739 | Perform SMS based modulo scheduling with register moves allowed. |
517d76fa | 1740 | |
5e962776 | 1741 | fmove-loop-invariants |
14379e66 | 1742 | Common Report Var(flag_move_loop_invariants) Optimization |
a7b2e184 | 1743 | Move loop invariant computations out of loops. |
5e962776 | 1744 | |
6fb5fa3c | 1745 | fdce |
6ae4be32 | 1746 | Common Var(flag_dce) Init(1) Optimization |
a7b2e184 | 1747 | Use the RTL dead code elimination pass. |
6fb5fa3c DB |
1748 | |
1749 | fdse | |
6ae4be32 | 1750 | Common Var(flag_dse) Init(1) Optimization |
a7b2e184 | 1751 | Use the RTL dead store elimination pass. |
6fb5fa3c | 1752 | |
d72372e4 | 1753 | freschedule-modulo-scheduled-loops |
c662432e | 1754 | Common Report Var(flag_resched_modulo_sched) Optimization |
a7b2e184 | 1755 | Enable/Disable the traditional scheduling in loops that already passed modulo scheduling. |
d72372e4 | 1756 | |
6ff3a151 | 1757 | fnon-call-exceptions |
c662432e | 1758 | Common Report Var(flag_non_call_exceptions) Optimization |
a7b2e184 | 1759 | Support synchronous non-call exceptions. |
6ff3a151 | 1760 | |
c713ddc0 BS |
1761 | foffload= |
1762 | Common Driver Joined MissingArgError(options or targets missing after %qs) | |
a7b2e184 | 1763 | -foffload=<targets>=<options> Specify offloading targets and options for them. |
c713ddc0 BS |
1764 | |
1765 | foffload-abi= | |
1766 | Common Joined RejectNegative Enum(offload_abi) Var(flag_offload_abi) Init(OFFLOAD_ABI_UNSET) | |
a7b2e184 | 1767 | -foffload-abi=[lp64|ilp32] Set the ABI to use in an offload compiler. |
c713ddc0 BS |
1768 | |
1769 | Enum | |
1770 | Name(offload_abi) Type(enum offload_abi) UnknownError(unknown offload ABI %qs) | |
1771 | ||
1772 | EnumValue | |
1773 | Enum(offload_abi) String(ilp32) Value(OFFLOAD_ABI_ILP32) | |
1774 | ||
1775 | EnumValue | |
1776 | Enum(offload_abi) String(lp64) Value(OFFLOAD_ABI_LP64) | |
1777 | ||
de32c0cb | 1778 | fomit-frame-pointer |
c662432e | 1779 | Common Report Var(flag_omit_frame_pointer) Optimization |
a7b2e184 | 1780 | When possible do not generate stack frames. |
de32c0cb | 1781 | |
78c60e3d SS |
1782 | fopt-info |
1783 | Common Report Var(flag_opt_info) Optimization | |
a7b2e184 | 1784 | Enable all optimization info dumps on stderr. |
78c60e3d SS |
1785 | |
1786 | fopt-info- | |
1787 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
a7b2e184 | 1788 | -fopt-info[-<type>=filename] Dump compiler optimization details. |
78c60e3d | 1789 | |
6ff3a151 | 1790 | foptimize-register-move |
3b6d1699 VM |
1791 | Common Ignore |
1792 | Does nothing. Preserved for backward compatibility. | |
6ff3a151 | 1793 | |
de32c0cb | 1794 | foptimize-sibling-calls |
c662432e | 1795 | Common Report Var(flag_optimize_sibling_calls) Optimization |
a7b2e184 | 1796 | Optimize sibling and tail recursive calls. |
de32c0cb | 1797 | |
3e485f62 | 1798 | fpartial-inlining |
b16650ac | 1799 | Common Report Var(flag_partial_inlining) Optimization |
a7b2e184 | 1800 | Perform partial inlining. |
3e485f62 | 1801 | |
a5573239 JH |
1802 | fpre-ipa-mem-report |
1803 | Common Report Var(pre_ipa_mem_report) | |
a7b2e184 | 1804 | Report on memory allocation before interprocedural optimization. |
a5573239 JH |
1805 | |
1806 | fpost-ipa-mem-report | |
1807 | Common Report Var(post_ipa_mem_report) | |
a7b2e184 | 1808 | Report on memory allocation before interprocedural optimization. |
a5573239 | 1809 | |
6ff3a151 | 1810 | fpack-struct |
c662432e | 1811 | Common Report Var(flag_pack_struct) Optimization |
a7b2e184 | 1812 | Pack structure members together without holes. |
6ff3a151 | 1813 | |
467cecf3 | 1814 | fpack-struct= |
c662432e | 1815 | Common RejectNegative Joined UInteger Optimization |
a7b2e184 | 1816 | -fpack-struct=<number> Set initial maximum structure member alignment. |
467cecf3 | 1817 | |
de32c0cb | 1818 | fpcc-struct-return |
5498f011 | 1819 | Common Report Var(flag_pcc_struct_return,1) Init(DEFAULT_PCC_STRUCT_RETURN) |
a7b2e184 | 1820 | Return small aggregates in memory, not registers. |
de32c0cb NB |
1821 | |
1822 | fpeel-loops | |
c662432e | 1823 | Common Report Var(flag_peel_loops) Optimization |
a7b2e184 | 1824 | Perform loop peeling. |
de32c0cb NB |
1825 | |
1826 | fpeephole | |
c662432e | 1827 | Common Report Var(flag_no_peephole,0) Optimization |
a7b2e184 | 1828 | Enable machine specific peephole optimizations. |
de32c0cb | 1829 | |
6ff3a151 | 1830 | fpeephole2 |
c662432e | 1831 | Common Report Var(flag_peephole2) Optimization |
a7b2e184 | 1832 | Enable an RTL peephole pass before sched2. |
6ff3a151 | 1833 | |
31b66477 | 1834 | fPIC |
da0aa2cc | 1835 | Common Report Var(flag_pic,2) Negative(fPIE) |
a7b2e184 | 1836 | Generate position-independent code if possible (large mode). |
31b66477 KC |
1837 | |
1838 | fPIE | |
428b3812 | 1839 | Common Report Var(flag_pie,2) Negative(fpic) Init(-1) |
a7b2e184 | 1840 | Generate position-independent code for executables if possible (large mode). |
31b66477 | 1841 | |
6ff3a151 | 1842 | fpic |
da0aa2cc | 1843 | Common Report Var(flag_pic,1) Negative(fpie) |
a7b2e184 | 1844 | Generate position-independent code if possible (small mode). |
6ff3a151 NB |
1845 | |
1846 | fpie | |
428b3812 | 1847 | Common Report Var(flag_pie,1) Negative(fPIC) Init(-1) |
a7b2e184 | 1848 | Generate position-independent code for executables if possible (small mode). |
6ff3a151 | 1849 | |
b91fd3c7 AM |
1850 | fplt |
1851 | Common Report Var(flag_plt) Init(1) Optimization | |
a7b2e184 | 1852 | Use PLT for PIC calls (-fno-plt: load the address from GOT at call site). |
b91fd3c7 | 1853 | |
68a607d8 | 1854 | fplugin= |
21bf1558 | 1855 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 1856 | Specify a plugin to load. |
68a607d8 DN |
1857 | |
1858 | fplugin-arg- | |
21bf1558 | 1859 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 1860 | -fplugin-arg-<name>-<key>[=<value>] Specify argument <key>=<value> for plugin <name>. |
68a607d8 | 1861 | |
bbc8a8dc | 1862 | fpredictive-commoning |
6ae4be32 | 1863 | Common Report Var(flag_predictive_commoning) Optimization |
bbc8a8dc ZD |
1864 | Run predictive commoning optimization. |
1865 | ||
de32c0cb | 1866 | fprefetch-loop-arrays |
1fbb509a | 1867 | Common Report Var(flag_prefetch_loop_arrays) Init(-1) Optimization |
a7b2e184 | 1868 | Generate prefetch instructions, if available, for arrays in loops. |
de32c0cb | 1869 | |
6ff3a151 | 1870 | fprofile |
50431bc4 | 1871 | Common Report Var(profile_flag) |
a7b2e184 | 1872 | Enable basic program profiling code. |
6ff3a151 NB |
1873 | |
1874 | fprofile-arcs | |
50431bc4 | 1875 | Common Report Var(profile_arc_flag) |
a7b2e184 | 1876 | Insert arc-based program profiling code. |
6ff3a151 | 1877 | |
2f908293 | 1878 | fprofile-dir= |
0576d21f | 1879 | Common Joined RejectNegative Var(profile_data_prefix) |
2f908293 SP |
1880 | Set the top-level directory for storing the profile data. |
1881 | The default is 'pwd'. | |
1882 | ||
52c76998 PY |
1883 | fprofile-correction |
1884 | Common Report Var(flag_profile_correction) | |
a7b2e184 | 1885 | Enable correction of flow inconsistent profile data input. |
52c76998 | 1886 | |
a8a5f53a JH |
1887 | fprofile-generate |
1888 | Common | |
a7b2e184 | 1889 | Enable common options for generating profile info for profile feedback directed optimizations. |
a8a5f53a | 1890 | |
2f908293 SP |
1891 | fprofile-generate= |
1892 | Common Joined RejectNegative | |
a7b2e184 | 1893 | Enable common options for generating profile info for profile feedback directed optimizations, and set -fprofile-dir=. |
2f908293 | 1894 | |
a8a5f53a | 1895 | fprofile-use |
2f908293 | 1896 | Common Var(flag_profile_use) |
a7b2e184 | 1897 | Enable common options for performing profile feedback directed optimizations. |
a8a5f53a | 1898 | |
2f908293 SP |
1899 | fprofile-use= |
1900 | Common Joined RejectNegative | |
a7b2e184 | 1901 | Enable common options for performing profile feedback directed optimizations, and set -fprofile-dir=. |
2f908293 | 1902 | |
fca9dc00 | 1903 | fprofile-values |
50431bc4 | 1904 | Common Report Var(flag_profile_values) |
a7b2e184 | 1905 | Insert code to profile values of expressions. |
fca9dc00 | 1906 | |
37e5402b JH |
1907 | fprofile-report |
1908 | Common Report Var(profile_report) | |
a7b2e184 | 1909 | Report on consistency of profile. |
37e5402b | 1910 | |
9cec31f4 ML |
1911 | fprofile-reorder-functions |
1912 | Common Report Var(flag_profile_reorder_functions) | |
a7b2e184 | 1913 | Enable function reordering that improves code placement. |
9cec31f4 | 1914 | |
de32c0cb | 1915 | frandom-seed |
299404a1 | 1916 | Common Var(common_deferred_options) Defer |
de32c0cb NB |
1917 | |
1918 | frandom-seed= | |
299404a1 | 1919 | Common Joined RejectNegative Var(common_deferred_options) Defer |
4bfede85 | 1920 | -frandom-seed=<string> Make compile reproducible using <string>. |
de32c0cb | 1921 | |
e0d9d0dd NC |
1922 | ; This switch causes the command line that was used to create an |
1923 | ; object file to be recorded into the object file. The exact format | |
1924 | ; of this recording is target and binary file format dependent. | |
1925 | ; It is related to the -fverbose-asm switch, but that switch only | |
1926 | ; records information in the assembler output file as comments, so | |
1927 | ; they never reach the object file. | |
1928 | frecord-gcc-switches | |
1929 | Common Report Var(flag_record_gcc_switches) | |
1930 | Record gcc command line switches in the object file. | |
1931 | ||
de32c0cb | 1932 | freg-struct-return |
f0036cca | 1933 | Common Report Var(flag_pcc_struct_return,0) Optimization |
a7b2e184 | 1934 | Return small aggregates in registers. |
de32c0cb | 1935 | |
6ff3a151 | 1936 | fregmove |
3b6d1699 VM |
1937 | Common Ignore |
1938 | Does nothing. Preserved for backward compatibility. | |
6ff3a151 | 1939 | |
f522930c JM |
1940 | flifetime-dse |
1941 | Common Report Var(flag_lifetime_dse) Init(1) Optimization | |
1942 | Tell DSE that the storage for a C++ object is dead when the constructor | |
1943 | starts and when the destructor finishes. | |
1944 | ||
f20f2613 VM |
1945 | flive-range-shrinkage |
1946 | Common Report Var(flag_live_range_shrinkage) Init(0) Optimization | |
a7b2e184 | 1947 | Relief of register pressure through live range shrinkage. |
f20f2613 | 1948 | |
6ff3a151 | 1949 | frename-registers |
c662432e | 1950 | Common Report Var(flag_rename_registers) Init(2) Optimization |
a7b2e184 | 1951 | Perform a register renaming optimization pass. |
6ff3a151 | 1952 | |
b16abbcb BC |
1953 | fschedule-fusion |
1954 | Common Report Var(flag_schedule_fusion) Init(2) Optimization | |
a7b2e184 | 1955 | Perform a target dependent instruction fusion optimization pass. |
b16abbcb | 1956 | |
6ff3a151 | 1957 | freorder-blocks |
c662432e | 1958 | Common Report Var(flag_reorder_blocks) Optimization |
a7b2e184 | 1959 | Reorder basic blocks to improve code placement. |
6ff3a151 | 1960 | |
59faab7c SB |
1961 | freorder-blocks-algorithm= |
1962 | Common Joined RejectNegative Enum(reorder_blocks_algorithm) Var(flag_reorder_blocks_algorithm) Init(REORDER_BLOCKS_ALGORITHM_SIMPLE) Optimization | |
a7b2e184 | 1963 | -freorder-blocks-algorithm=[simple|stc] Set the used basic block reordering algorithm. |
59faab7c SB |
1964 | |
1965 | Enum | |
1966 | Name(reorder_blocks_algorithm) Type(enum reorder_blocks_algorithm) UnknownError(unknown basic block reordering algorithm %qs) | |
1967 | ||
1968 | EnumValue | |
1969 | Enum(reorder_blocks_algorithm) String(simple) Value(REORDER_BLOCKS_ALGORITHM_SIMPLE) | |
1970 | ||
1971 | EnumValue | |
1972 | Enum(reorder_blocks_algorithm) String(stc) Value(REORDER_BLOCKS_ALGORITHM_STC) | |
1973 | ||
750054a2 | 1974 | freorder-blocks-and-partition |
c662432e | 1975 | Common Report Var(flag_reorder_blocks_and_partition) Optimization |
a7b2e184 | 1976 | Reorder basic blocks and partition into hot and cold sections. |
750054a2 | 1977 | |
6ff3a151 | 1978 | freorder-functions |
c662432e | 1979 | Common Report Var(flag_reorder_functions) Optimization |
a7b2e184 | 1980 | Reorder functions to improve code placement. |
6ff3a151 | 1981 | |
de32c0cb | 1982 | frerun-cse-after-loop |
3020190e | 1983 | Common Report Var(flag_rerun_cse_after_loop) Optimization |
a7b2e184 | 1984 | Add a common subexpression elimination pass after loop optimizations. |
de32c0cb | 1985 | |
efa1cdf0 | 1986 | frerun-loop-opt |
2d2bd949 | 1987 | Common Ignore |
c0220ea4 | 1988 | Does nothing. Preserved for backward compatibility. |
efa1cdf0 | 1989 | |
039c3d42 | 1990 | frounding-math |
5e46b0c6 | 1991 | Common Report Var(flag_rounding_math) Optimization SetByCombined |
a7b2e184 | 1992 | Disable optimizations that assume default FP rounding behavior. |
039c3d42 | 1993 | |
6ff3a151 | 1994 | fsched-interblock |
c662432e | 1995 | Common Report Var(flag_schedule_interblock) Init(1) Optimization |
a7b2e184 | 1996 | Enable scheduling across basic blocks. |
6ff3a151 | 1997 | |
ce18efcb VM |
1998 | fsched-pressure |
1999 | Common Report Var(flag_sched_pressure) Init(0) Optimization | |
a7b2e184 | 2000 | Enable register pressure sensitive insn scheduling. |
ce18efcb | 2001 | |
6ff3a151 | 2002 | fsched-spec |
c662432e | 2003 | Common Report Var(flag_schedule_speculative) Init(1) Optimization |
a7b2e184 | 2004 | Allow speculative motion of non-loads. |
6ff3a151 NB |
2005 | |
2006 | fsched-spec-load | |
c662432e | 2007 | Common Report Var(flag_schedule_speculative_load) Optimization |
a7b2e184 | 2008 | Allow speculative motion of some loads. |
6ff3a151 NB |
2009 | |
2010 | fsched-spec-load-dangerous | |
c662432e | 2011 | Common Report Var(flag_schedule_speculative_load_dangerous) Optimization |
a7b2e184 | 2012 | Allow speculative motion of more loads. |
6ff3a151 | 2013 | |
de32c0cb | 2014 | fsched-verbose= |
4111f1c9 | 2015 | Common RejectNegative Joined UInteger Var(sched_verbose_param) Init(1) |
a7b2e184 | 2016 | -fsched-verbose=<number> Set the verbosity level of the scheduler. |
de32c0cb | 2017 | |
6ff3a151 | 2018 | fsched2-use-superblocks |
c662432e | 2019 | Common Report Var(flag_sched2_use_superblocks) Optimization |
a7b2e184 | 2020 | If scheduling post reload, do superblock scheduling. |
6ff3a151 NB |
2021 | |
2022 | fsched2-use-traces | |
2d2bd949 | 2023 | Common Ignore |
57257f0d | 2024 | Does nothing. Preserved for backward compatibility. |
6ff3a151 | 2025 | |
de32c0cb | 2026 | fschedule-insns |
c662432e | 2027 | Common Report Var(flag_schedule_insns) Optimization |
a7b2e184 | 2028 | Reschedule instructions before register allocation. |
de32c0cb NB |
2029 | |
2030 | fschedule-insns2 | |
c662432e | 2031 | Common Report Var(flag_schedule_insns_after_reload) Optimization |
a7b2e184 | 2032 | Reschedule instructions after register allocation. |
de32c0cb | 2033 | |
e855c69d AB |
2034 | ; This flag should be on when a target implements non-trivial |
2035 | ; scheduling hooks, maybe saving some information for its own sake. | |
a7b2e184 | 2036 | ; On IA64, for example, this is used for correct bundling. |
e855c69d AB |
2037 | fselective-scheduling |
2038 | Common Report Var(flag_selective_scheduling) Optimization | |
a7b2e184 | 2039 | Schedule instructions using selective scheduling algorithm. |
e855c69d AB |
2040 | |
2041 | fselective-scheduling2 | |
a7b2e184 MS |
2042 | Common Report Var(flag_selective_scheduling2) Optimization |
2043 | Run selective scheduling after reload. | |
e855c69d AB |
2044 | |
2045 | fsel-sched-pipelining | |
2046 | Common Report Var(flag_sel_sched_pipelining) Init(0) Optimization | |
a7b2e184 | 2047 | Perform software pipelining of inner loops during selective scheduling. |
e855c69d AB |
2048 | |
2049 | fsel-sched-pipelining-outer-loops | |
2050 | Common Report Var(flag_sel_sched_pipelining_outer_loops) Init(0) Optimization | |
a7b2e184 | 2051 | Perform software pipelining of outer loops during selective scheduling. |
e855c69d AB |
2052 | |
2053 | fsel-sched-reschedule-pipelined | |
2054 | Common Report Var(flag_sel_sched_reschedule_pipelined) Init(0) Optimization | |
a7b2e184 | 2055 | Reschedule pipelined regions without pipelining. |
e855c69d | 2056 | |
e288a46c JH |
2057 | fsemantic-interposition |
2058 | Common Report Var(flag_semantic_interposition) Init(1) | |
a7b2e184 | 2059 | Allow interposing function (or variables) by ones with different semantics (or initializer) respectively by dynamic linker. |
e288a46c | 2060 | |
31b66477 KC |
2061 | ; sched_stalled_insns means that insns can be moved prematurely from the queue |
2062 | ; of stalled insns into the ready list. | |
569fa502 | 2063 | fsched-stalled-insns |
ab442df7 | 2064 | Common Report Var(flag_sched_stalled_insns) Optimization UInteger |
a7b2e184 | 2065 | Allow premature scheduling of queued insns. |
569fa502 DN |
2066 | |
2067 | fsched-stalled-insns= | |
b16650ac | 2068 | Common RejectNegative Joined UInteger Optimization |
a7b2e184 | 2069 | -fsched-stalled-insns=<number> Set number of queued insns that can be prematurely scheduled. |
569fa502 | 2070 | |
31b66477 KC |
2071 | ; sched_stalled_insns_dep controls how many recently scheduled cycles will |
2072 | ; be examined for a dependency on a stalled insn that is candidate for | |
2073 | ; premature removal from the queue of stalled insns into the ready list (has | |
2074 | ; an effect only if the flag 'sched_stalled_insns' is set). | |
569fa502 | 2075 | fsched-stalled-insns-dep |
ab442df7 | 2076 | Common Report Var(flag_sched_stalled_insns_dep,1) Init(1) Optimization UInteger |
a7b2e184 | 2077 | Set dependence distance checking in premature scheduling of queued insns. |
569fa502 DN |
2078 | |
2079 | fsched-stalled-insns-dep= | |
b16650ac | 2080 | Common RejectNegative Joined UInteger Optimization |
a7b2e184 | 2081 | -fsched-stalled-insns-dep=<number> Set dependence distance checking in premature scheduling of queued insns. |
569fa502 | 2082 | |
ee4764a8 GS |
2083 | fsched-group-heuristic |
2084 | Common Report Var(flag_sched_group_heuristic) Init(1) Optimization | |
a7b2e184 | 2085 | Enable the group heuristic in the scheduler. |
ee4764a8 GS |
2086 | |
2087 | fsched-critical-path-heuristic | |
2088 | Common Report Var(flag_sched_critical_path_heuristic) Init(1) Optimization | |
a7b2e184 | 2089 | Enable the critical path heuristic in the scheduler. |
ee4764a8 GS |
2090 | |
2091 | fsched-spec-insn-heuristic | |
2092 | Common Report Var(flag_sched_spec_insn_heuristic) Init(1) Optimization | |
a7b2e184 | 2093 | Enable the speculative instruction heuristic in the scheduler. |
ee4764a8 | 2094 | |
ee4764a8 GS |
2095 | fsched-rank-heuristic |
2096 | Common Report Var(flag_sched_rank_heuristic) Init(1) Optimization | |
a7b2e184 | 2097 | Enable the rank heuristic in the scheduler. |
ee4764a8 GS |
2098 | |
2099 | fsched-last-insn-heuristic | |
2100 | Common Report Var(flag_sched_last_insn_heuristic) Init(1) Optimization | |
a7b2e184 | 2101 | Enable the last instruction heuristic in the scheduler. |
ee4764a8 GS |
2102 | |
2103 | fsched-dep-count-heuristic | |
2104 | Common Report Var(flag_sched_dep_count_heuristic) Init(1) Optimization | |
a7b2e184 | 2105 | Enable the dependent count heuristic in the scheduler. |
ee4764a8 | 2106 | |
aacd3885 | 2107 | fsection-anchors |
c662432e | 2108 | Common Report Var(flag_section_anchors) Optimization |
a7b2e184 | 2109 | Access data in the same section from shared anchor points. |
aacd3885 | 2110 | |
8cd37d0b | 2111 | fsee |
2d2bd949 | 2112 | Common Ignore |
8393a9c8 | 2113 | Does nothing. Preserved for backward compatibility. |
8cd37d0b | 2114 | |
87a0ebfd | 2115 | fzee |
26cd9add EI |
2116 | Common Ignore |
2117 | Does nothing. Preserved for backward compatibility. | |
2118 | ||
2119 | free | |
2120 | Common Report Var(flag_ree) Init(0) | |
2121 | Turn on Redundant Extensions Elimination pass. | |
87a0ebfd | 2122 | |
8abb6b22 | 2123 | fshow-column |
1cb42611 | 2124 | Common Report Var(flag_show_column) Init(1) |
a7b2e184 | 2125 | Show column numbers in diagnostics, when available. Default on. |
8abb6b22 | 2126 | |
484db665 BS |
2127 | fshrink-wrap |
2128 | Common Report Var(flag_shrink_wrap) Optimization | |
2129 | Emit function prologues only before parts of the function that need it, | |
2130 | rather than at the top of the function. | |
2131 | ||
6ff3a151 | 2132 | fsignaling-nans |
5e46b0c6 | 2133 | Common Report Var(flag_signaling_nans) Optimization SetByCombined |
a7b2e184 | 2134 | Disable optimizations observable by IEEE signaling NaNs. |
6ff3a151 | 2135 | |
db02da79 | 2136 | fsigned-zeros |
5e46b0c6 | 2137 | Common Report Var(flag_signed_zeros) Init(1) Optimization SetByCombined |
a7b2e184 | 2138 | Disable floating point optimizations that ignore the IEEE signedness of zero. |
db02da79 | 2139 | |
6ff3a151 | 2140 | fsingle-precision-constant |
c662432e | 2141 | Common Report Var(flag_single_precision_constant) Optimization |
a7b2e184 | 2142 | Convert floating point constants to single precision constants. |
6ff3a151 | 2143 | |
113d659a | 2144 | fsplit-ivs-in-unroller |
c662432e | 2145 | Common Report Var(flag_split_ivs_in_unroller) Init(1) Optimization |
a7b2e184 | 2146 | Split lifetimes of induction variables when loops are unrolled. |
113d659a | 2147 | |
7458026b ILT |
2148 | fsplit-stack |
2149 | Common Report Var(flag_split_stack) Init(-1) | |
a7b2e184 | 2150 | Generate discontiguous stack frames. |
7458026b | 2151 | |
e53a16e7 | 2152 | fsplit-wide-types |
21af5cdf | 2153 | Common Report Var(flag_split_wide_types) Optimization |
a7b2e184 | 2154 | Split wide types into independent registers. |
e53a16e7 | 2155 | |
6a75d560 RS |
2156 | fssa-backprop |
2157 | Common Report Var(flag_ssa_backprop) Init(1) Optimization | |
2158 | Enable backward propagation of use properties at the SSA level. | |
2159 | ||
68f6df73 RB |
2160 | fssa-phiopt |
2161 | Common Report Var(flag_ssa_phiopt) Optimization | |
a7b2e184 | 2162 | Optimize conditional patterns using SSA PHI nodes. |
68f6df73 | 2163 | |
98ce9490 TV |
2164 | fstdarg-opt |
2165 | Common Report Var(flag_stdarg_opt) Init(1) Optimization | |
a7b2e184 | 2166 | Optimize amount of stdarg registers saved to stack at start of function. |
98ce9490 | 2167 | |
f37a4f14 | 2168 | fvariable-expansion-in-unroller |
c662432e | 2169 | Common Report Var(flag_variable_expansion_in_unroller) Optimization |
a7b2e184 | 2170 | Apply variable expansion when loops are unrolled. |
f37a4f14 | 2171 | |
b38f3813 EB |
2172 | fstack-check= |
2173 | Common Report RejectNegative Joined | |
a7b2e184 | 2174 | -fstack-check=[no|generic|specific] Insert stack checking code into the program. |
b38f3813 | 2175 | |
6ff3a151 | 2176 | fstack-check |
5de8299c | 2177 | Common Alias(fstack-check=, specific, no) |
a7b2e184 | 2178 | Insert stack checking code into the program. Same as -fstack-check=specific. |
6ff3a151 | 2179 | |
de32c0cb | 2180 | fstack-limit |
21bf1558 | 2181 | Common Var(common_deferred_options) Defer |
de32c0cb | 2182 | |
058de654 | 2183 | fstack-limit-register= |
21bf1558 | 2184 | Common RejectNegative Joined Var(common_deferred_options) Defer |
a7b2e184 | 2185 | -fstack-limit-register=<register> Trap if the stack goes past <register>. |
058de654 NB |
2186 | |
2187 | fstack-limit-symbol= | |
21bf1558 | 2188 | Common RejectNegative Joined Var(common_deferred_options) Defer |
a7b2e184 | 2189 | -fstack-limit-symbol=<name> Trap if the stack goes past symbol <name>. |
058de654 | 2190 | |
7d69de61 | 2191 | fstack-protector |
e0f6cba0 | 2192 | Common Report Var(flag_stack_protect, 1) Init(-1) |
a7b2e184 | 2193 | Use propolice as a stack protection method. |
7d69de61 RH |
2194 | |
2195 | fstack-protector-all | |
e0f6cba0 | 2196 | Common Report RejectNegative Var(flag_stack_protect, 2) Init(-1) |
a7b2e184 | 2197 | Use a stack protection method for every function. |
7d69de61 | 2198 | |
f6bc1c4a | 2199 | fstack-protector-strong |
e0f6cba0 | 2200 | Common Report RejectNegative Var(flag_stack_protect, 3) Init(-1) |
a7b2e184 | 2201 | Use a smart stack protection method for certain functions. |
f6bc1c4a | 2202 | |
5434dc07 MD |
2203 | fstack-protector-explicit |
2204 | Common Report RejectNegative Var(flag_stack_protect, 4) | |
a7b2e184 | 2205 | Use stack protection method only for functions with the stack_protect attribute. |
5434dc07 | 2206 | |
d3c12306 EB |
2207 | fstack-usage |
2208 | Common RejectNegative Var(flag_stack_usage) | |
a7b2e184 | 2209 | Output stack usage information on a per-function basis. |
d3c12306 | 2210 | |
de32c0cb | 2211 | fstrength-reduce |
2d2bd949 | 2212 | Common Ignore |
c0220ea4 | 2213 | Does nothing. Preserved for backward compatibility. |
de32c0cb | 2214 | |
31b66477 KC |
2215 | ; Nonzero if we should do (language-dependent) alias analysis. |
2216 | ; Typically, this analysis will assume that expressions of certain | |
2217 | ; types do not alias expressions of certain other types. Only used | |
2218 | ; if alias analysis (in general) is enabled. | |
6ff3a151 | 2219 | fstrict-aliasing |
c662432e | 2220 | Common Report Var(flag_strict_aliasing) Optimization |
a7b2e184 | 2221 | Assume strict aliasing rules apply. |
6ff3a151 | 2222 | |
eeef0e45 | 2223 | fstrict-overflow |
b16650ac | 2224 | Common Report Var(flag_strict_overflow) Optimization |
a7b2e184 | 2225 | Treat signed overflow as undefined. |
eeef0e45 | 2226 | |
e8053cf5 RH |
2227 | fsync-libcalls |
2228 | Common Report Var(flag_sync_libcalls) Init(1) | |
a7b2e184 | 2229 | Implement __atomic operations via libcalls to legacy __sync functions. |
e8053cf5 | 2230 | |
de32c0cb | 2231 | fsyntax-only |
50431bc4 | 2232 | Common Report Var(flag_syntax_only) |
a7b2e184 | 2233 | Check for syntax errors, then stop. |
de32c0cb | 2234 | |
6ff3a151 | 2235 | ftest-coverage |
50431bc4 | 2236 | Common Report Var(flag_test_coverage) |
a7b2e184 | 2237 | Create data files needed by \"gcov\". |
6ff3a151 | 2238 | |
de32c0cb | 2239 | fthread-jumps |
c662432e | 2240 | Common Report Var(flag_thread_jumps) Optimization |
a7b2e184 | 2241 | Perform jump threading optimizations. |
de32c0cb | 2242 | |
6ff3a151 | 2243 | ftime-report |
50431bc4 | 2244 | Common Report Var(time_report) |
a7b2e184 | 2245 | Report the time taken by each compiler pass. |
6ff3a151 | 2246 | |
058de654 | 2247 | ftls-model= |
e6d4b984 | 2248 | Common Joined RejectNegative Enum(tls_model) Var(flag_tls_default) Init(TLS_MODEL_GLOBAL_DYNAMIC) |
a7b2e184 | 2249 | -ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec] Set the default thread-local storage code generation model. |
058de654 | 2250 | |
e6d4b984 JM |
2251 | Enum |
2252 | Name(tls_model) Type(enum tls_model) UnknownError(unknown TLS model %qs) | |
2253 | ||
2254 | EnumValue | |
2255 | Enum(tls_model) String(global-dynamic) Value(TLS_MODEL_GLOBAL_DYNAMIC) | |
2256 | ||
2257 | EnumValue | |
2258 | Enum(tls_model) String(local-dynamic) Value(TLS_MODEL_LOCAL_DYNAMIC) | |
2259 | ||
2260 | EnumValue | |
2261 | Enum(tls_model) String(initial-exec) Value(TLS_MODEL_INITIAL_EXEC) | |
2262 | ||
2263 | EnumValue | |
2264 | Enum(tls_model) String(local-exec) Value(TLS_MODEL_LOCAL_EXEC) | |
2265 | ||
474eccc6 | 2266 | ftoplevel-reorder |
b16650ac | 2267 | Common Report Var(flag_toplevel_reorder) Init(2) |
a7b2e184 | 2268 | Reorder top level functions, variables, and asms. |
474eccc6 | 2269 | |
de32c0cb | 2270 | ftracer |
b16650ac | 2271 | Common Report Var(flag_tracer) Optimization |
a7b2e184 | 2272 | Perform superblock formation via tail duplication. |
de32c0cb | 2273 | |
31b66477 KC |
2274 | ; Zero means that floating-point math operations cannot generate a |
2275 | ; (user-visible) trap. This is the case, for example, in nonstop | |
2276 | ; IEEE 754 arithmetic. | |
6ff3a151 | 2277 | ftrapping-math |
5e46b0c6 | 2278 | Common Report Var(flag_trapping_math) Init(1) Optimization SetByCombined |
a7b2e184 | 2279 | Assume floating-point operations can trap. |
6ff3a151 NB |
2280 | |
2281 | ftrapv | |
c662432e | 2282 | Common Report Var(flag_trapv) Optimization |
a7b2e184 | 2283 | Trap for signed overflow in addition, subtraction and multiplication. |
6ff3a151 | 2284 | |
6de9cd9a | 2285 | ftree-ccp |
c662432e | 2286 | Common Report Var(flag_tree_ccp) Optimization |
a7b2e184 | 2287 | Enable SSA-CCP optimization on trees. |
6de9cd9a | 2288 | |
0b4b14ac RG |
2289 | ftree-bit-ccp |
2290 | Common Report Var(flag_tree_bit_ccp) Optimization | |
a7b2e184 | 2291 | Enable SSA-BIT-CCP optimization on trees. |
0b4b14ac | 2292 | |
0bca51f0 | 2293 | ftree-store-ccp |
2d2bd949 | 2294 | Common Ignore |
dce2b2f6 | 2295 | Does nothing. Preserved for backward compatibility. |
0bca51f0 | 2296 | |
6de9cd9a | 2297 | ftree-ch |
c662432e | 2298 | Common Report Var(flag_tree_ch) Optimization |
a7b2e184 | 2299 | Enable loop header copying on trees. |
6de9cd9a | 2300 | |
21d01365 | 2301 | ftree-coalesce-inlined-vars |
1f9ceff1 AO |
2302 | Common Ignore RejectNegative |
2303 | Does nothing. Preserved for backward compatibility. | |
21d01365 AO |
2304 | |
2305 | ftree-coalesce-vars | |
1f9ceff1 | 2306 | Common Report Var(flag_tree_coalesce_vars) Optimization |
a7b2e184 | 2307 | Enable SSA coalescing of user variables. |
21d01365 | 2308 | |
6de9cd9a | 2309 | ftree-copyrename |
1f9ceff1 AO |
2310 | Common Ignore |
2311 | Does nothing. Preserved for backward compatibility. | |
6de9cd9a | 2312 | |
0bca51f0 | 2313 | ftree-copy-prop |
c662432e | 2314 | Common Report Var(flag_tree_copy_prop) Optimization |
a7b2e184 | 2315 | Enable copy propagation on trees. |
0bca51f0 DN |
2316 | |
2317 | ftree-store-copy-prop | |
2d2bd949 | 2318 | Common Ignore |
e9033855 | 2319 | Does nothing. Preserved for backward compatibility. |
0bca51f0 | 2320 | |
a5828d1e MM |
2321 | ftree-cselim |
2322 | Common Report Var(flag_tree_cselim) Init(2) Optimization | |
a7b2e184 | 2323 | Transform condition stores into unconditional ones. |
a5828d1e | 2324 | |
b6e99746 MJ |
2325 | ftree-switch-conversion |
2326 | Common Report Var(flag_tree_switch_conversion) Optimization | |
2327 | Perform conversions of switch initializations. | |
2328 | ||
6de9cd9a | 2329 | ftree-dce |
c662432e | 2330 | Common Report Var(flag_tree_dce) Optimization |
a7b2e184 | 2331 | Enable SSA dead code elimination optimization on trees. |
6de9cd9a DN |
2332 | |
2333 | ftree-dominator-opts | |
c662432e | 2334 | Common Report Var(flag_tree_dom) Optimization |
a7b2e184 | 2335 | Enable dominator optimizations. |
6de9cd9a | 2336 | |
c9e93168 TV |
2337 | ftree-tail-merge |
2338 | Common Report Var(flag_tree_tail_merge) Optimization | |
a7b2e184 | 2339 | Enable tail merging on trees. |
c9e93168 | 2340 | |
6de9cd9a | 2341 | ftree-dse |
c662432e | 2342 | Common Report Var(flag_tree_dse) Optimization |
a7b2e184 | 2343 | Enable dead store elimination. |
6de9cd9a | 2344 | |
248fc9f3 RG |
2345 | ftree-forwprop |
2346 | Common Report Var(flag_tree_forwprop) Init(1) Optimization | |
a7b2e184 | 2347 | Enable forward propagation on trees. |
248fc9f3 | 2348 | |
ff2ad0f7 | 2349 | ftree-fre |
c662432e | 2350 | Common Report Var(flag_tree_fre) Optimization |
a7b2e184 | 2351 | Enable Full Redundancy Elimination (FRE) on trees. |
ff2ad0f7 | 2352 | |
8b57bfeb JJ |
2353 | foptimize-strlen |
2354 | Common Report Var(flag_optimize_strlen) Optimization | |
a7b2e184 | 2355 | Enable string length optimizations on trees. |
8b57bfeb | 2356 | |
ae93744d JL |
2357 | fisolate-erroneous-paths-dereference |
2358 | Common Report Var(flag_isolate_erroneous_paths_dereference) Optimization | |
408e8aa4 SL |
2359 | Detect paths that trigger erroneous or undefined behavior due to |
2360 | dereferencing a null pointer. Isolate those paths from the main control | |
2361 | flow and turn the statement with erroneous or undefined behavior into a trap. | |
ae93744d JL |
2362 | |
2363 | fisolate-erroneous-paths-attribute | |
2364 | Common Report Var(flag_isolate_erroneous_paths_attribute) Optimization | |
408e8aa4 SL |
2365 | Detect paths that trigger erroneous or undefined behavior due a null value |
2366 | being used in a way forbidden by a returns_nonnull or nonnull | |
ae93744d | 2367 | attribute. Isolate those paths from the main control flow and turn the |
a7b2e184 | 2368 | statement with erroneous or undefined behavior into a trap. |
8fdc414d | 2369 | |
dea61d92 | 2370 | ftree-loop-distribution |
53ed2f0e | 2371 | Common Report Var(flag_tree_loop_distribution) Optimization |
a7b2e184 | 2372 | Enable loop distribution on trees. |
dea61d92 | 2373 | |
20769d5e SP |
2374 | ftree-loop-distribute-patterns |
2375 | Common Report Var(flag_tree_loop_distribute_patterns) Optimization | |
a7b2e184 | 2376 | Enable loop distribution for patterns transformed into a library call. |
20769d5e | 2377 | |
1b08d87d | 2378 | ftree-loop-im |
c662432e | 2379 | Common Report Var(flag_tree_loop_im) Init(1) Optimization |
a7b2e184 | 2380 | Enable loop invariant motion on trees. |
a7e5372d | 2381 | |
599eabdb | 2382 | ftree-loop-linear |
d6bb5ccf | 2383 | Common Alias(floop-nest-optimize) |
a7b2e184 | 2384 | Enable loop nest transforms. Same as -floop-nest-optimize. |
599eabdb | 2385 | |
1b08d87d | 2386 | ftree-loop-ivcanon |
c662432e | 2387 | Common Report Var(flag_tree_loop_ivcanon) Init(1) Optimization |
a7b2e184 | 2388 | Create canonical induction variables in loops. |
1b08d87d | 2389 | |
c66b6c66 | 2390 | ftree-loop-optimize |
c662432e | 2391 | Common Report Var(flag_tree_loop_optimize) Init(1) Optimization |
a7b2e184 | 2392 | Enable loop optimizations on tree level. |
c66b6c66 | 2393 | |
5f40b3cb | 2394 | ftree-parallelize-loops= |
b16650ac | 2395 | Common Report Joined RejectNegative UInteger Var(flag_tree_parallelize_loops) Init(1) Optimization |
a7b2e184 | 2396 | Enable automatic parallelization of loops. |
5f40b3cb | 2397 | |
248fc9f3 RG |
2398 | ftree-phiprop |
2399 | Common Report Var(flag_tree_phiprop) Init(1) Optimization | |
2400 | Enable hoisting loads from conditional pointers. | |
2401 | ||
6de9cd9a | 2402 | ftree-pre |
c662432e | 2403 | Common Report Var(flag_tree_pre) Optimization |
a7b2e184 | 2404 | Enable SSA-PRE optimization on trees. |
6de9cd9a | 2405 | |
fa06ad0d JR |
2406 | ftree-partial-pre |
2407 | Common Report Var(flag_tree_partial_pre) Optimization | |
a7b2e184 | 2408 | In SSA-PRE optimization on trees, enable partial-partial redundancy elimination. |
fa06ad0d | 2409 | |
248fc9f3 | 2410 | ftree-pta |
14379e66 | 2411 | Common Report Var(flag_tree_pta) Optimization |
248fc9f3 RG |
2412 | Perform function-local points-to analysis on trees. |
2413 | ||
13c59415 UB |
2414 | ftree-reassoc |
2415 | Common Report Var(flag_tree_reassoc) Init(1) Optimization | |
a7b2e184 | 2416 | Enable reassociation on tree level. |
13c59415 | 2417 | |
c75ab022 | 2418 | ftree-salias |
2d2bd949 | 2419 | Common Ignore |
1353232d | 2420 | Does nothing. Preserved for backward compatibility. |
c75ab022 | 2421 | |
fa555252 | 2422 | ftree-sink |
c662432e | 2423 | Common Report Var(flag_tree_sink) Optimization |
a7b2e184 | 2424 | Enable SSA code sinking on trees. |
fa555252 | 2425 | |
75cfe445 BS |
2426 | ftree-slsr |
2427 | Common Report Var(flag_tree_slsr) Optimization | |
a7b2e184 | 2428 | Perform straight-line strength reduction. |
75cfe445 | 2429 | |
6de9cd9a | 2430 | ftree-sra |
c662432e | 2431 | Common Report Var(flag_tree_sra) Optimization |
a7b2e184 | 2432 | Perform scalar replacement of aggregates. |
6de9cd9a DN |
2433 | |
2434 | ftree-ter | |
3020190e | 2435 | Common Report Var(flag_tree_ter) Optimization |
a7b2e184 | 2436 | Replace temporary expressions in the SSA->normal pass. |
6de9cd9a | 2437 | |
c662432e NC |
2438 | ftree-lrs |
2439 | Common Report Var(flag_tree_live_range_split) Optimization | |
a7b2e184 | 2440 | Perform live range splitting during the SSA->normal pass. |
c662432e | 2441 | |
0bca51f0 | 2442 | ftree-vrp |
c662432e | 2443 | Common Report Var(flag_tree_vrp) Init(0) Optimization |
a7b2e184 | 2444 | Perform Value Range Propagation on trees. |
0bca51f0 | 2445 | |
8fe17e23 AA |
2446 | fsplit-paths |
2447 | Common Report Var(flag_split_paths) Init(0) Optimization | |
2448 | Split paths leading to loop backedges. | |
2449 | ||
de32c0cb | 2450 | funit-at-a-time |
b16650ac | 2451 | Common Report Var(flag_unit_at_a_time) Init(1) |
a7b2e184 | 2452 | Compile whole compilation unit at a time. |
de32c0cb NB |
2453 | |
2454 | funroll-loops | |
c662432e | 2455 | Common Report Var(flag_unroll_loops) Optimization |
a7b2e184 | 2456 | Perform loop unrolling when iteration count is known. |
de32c0cb NB |
2457 | |
2458 | funroll-all-loops | |
c662432e | 2459 | Common Report Var(flag_unroll_all_loops) Optimization |
a7b2e184 | 2460 | Perform loop unrolling for all loops. |
de32c0cb | 2461 | |
f9cc1a70 PB |
2462 | ; Nonzero means that loop optimizer may assume that the induction variables |
2463 | ; that control loops do not overflow and that the loops with nontrivial | |
2464 | ; exit condition are not infinite | |
2465 | funsafe-loop-optimizations | |
c662432e | 2466 | Common Report Var(flag_unsafe_loop_optimizations) Optimization |
a7b2e184 | 2467 | Allow loop optimizations to assume that the loops behave in normal way. |
f9cc1a70 | 2468 | |
a1a82611 | 2469 | fassociative-math |
b16650ac | 2470 | Common Report Var(flag_associative_math) SetByCombined Optimization |
a1a82611 RE |
2471 | Allow optimization for floating-point arithmetic which may change the |
2472 | result of the operation due to rounding. | |
2473 | ||
2474 | freciprocal-math | |
b16650ac | 2475 | Common Report Var(flag_reciprocal_math) SetByCombined Optimization |
a1a82611 RE |
2476 | Same as -fassociative-math for expressions which include division. |
2477 | ||
31b66477 KC |
2478 | ; Nonzero means that unsafe floating-point math optimizations are allowed |
2479 | ; for the sake of speed. IEEE compliance is not guaranteed, and operations | |
2480 | ; are allowed to assume that their arguments and results are "normal" | |
2481 | ; (e.g., nonnegative for SQRT). | |
6ff3a151 | 2482 | funsafe-math-optimizations |
5e46b0c6 | 2483 | Common Report Var(flag_unsafe_math_optimizations) Optimization SetByCombined |
a7b2e184 | 2484 | Allow math optimizations that may violate IEEE or ISO standards. |
6ff3a151 | 2485 | |
de32c0cb | 2486 | funswitch-loops |
c662432e | 2487 | Common Report Var(flag_unswitch_loops) Optimization |
a7b2e184 | 2488 | Perform loop unswitching. |
de32c0cb | 2489 | |
6ff3a151 | 2490 | funwind-tables |
c662432e | 2491 | Common Report Var(flag_unwind_tables) Optimization |
a7b2e184 | 2492 | Just generate unwind tables for exception handling. |
6ff3a151 | 2493 | |
b352afba | 2494 | fuse-ld=bfd |
b78e932d | 2495 | Common Driver Negative(fuse-ld=gold) |
a7b2e184 | 2496 | Use the bfd linker instead of the default linker. |
b352afba NC |
2497 | |
2498 | fuse-ld=gold | |
b78e932d | 2499 | Common Driver Negative(fuse-ld=bfd) |
a7b2e184 | 2500 | Use the gold linker instead of the default linker. |
b352afba | 2501 | |
da18ea94 | 2502 | fuse-linker-plugin |
063d671d | 2503 | Common Undocumented Var(flag_use_linker_plugin) |
da18ea94 | 2504 | |
e90afde6 JM |
2505 | ; Positive if we should track variables, negative if we should run |
2506 | ; the var-tracking pass only to discard debug annotations, zero if | |
2507 | ; we're not to run it. When flag_var_tracking == 2 (AUTODETECT_VALUE) it | |
2508 | ; will be set according to optimize, debug_info_level and debug_hooks | |
2509 | ; in process_options (). | |
014a1138 | 2510 | fvar-tracking |
e90afde6 | 2511 | Common Report Var(flag_var_tracking) Init(2) Optimization |
a7b2e184 | 2512 | Perform variable tracking. |
014a1138 | 2513 | |
e90afde6 JM |
2514 | ; Positive if we should track variables at assignments, negative if |
2515 | ; we should run the var-tracking pass only to discard debug | |
2516 | ; annotations. When flag_var_tracking_assignments == | |
2517 | ; AUTODETECT_VALUE it will be set according to flag_var_tracking. | |
b5b8b0ac | 2518 | fvar-tracking-assignments |
e90afde6 | 2519 | Common Report Var(flag_var_tracking_assignments) Init(2) Optimization |
a7b2e184 | 2520 | Perform variable tracking by annotating assignments. |
b5b8b0ac | 2521 | |
e90afde6 JM |
2522 | ; Nonzero if we should toggle flag_var_tracking_assignments after |
2523 | ; processing options and computing its default. */ | |
b5b8b0ac | 2524 | fvar-tracking-assignments-toggle |
e90afde6 | 2525 | Common Report Var(flag_var_tracking_assignments_toggle) Optimization |
a7b2e184 | 2526 | Toggle -fvar-tracking-assignments. |
b5b8b0ac | 2527 | |
1267ca30 EB |
2528 | ; Positive if we should track uninitialized variables, negative if |
2529 | ; we should run the var-tracking pass only to discard debug | |
2530 | ; annotations. When flag_var_tracking_uninit == AUTODETECT_VALUE it | |
2531 | ; will be set according to flag_var_tracking. | |
62760ffd CT |
2532 | fvar-tracking-uninit |
2533 | Common Report Var(flag_var_tracking_uninit) Optimization | |
a7b2e184 | 2534 | Perform variable tracking and also tag variables that are uninitialized. |
62760ffd | 2535 | |
79fe1b3b | 2536 | ftree-vectorize |
c662432e | 2537 | Common Report Var(flag_tree_vectorize) Optimization |
a7b2e184 | 2538 | Enable vectorization on trees. |
79fe1b3b | 2539 | |
78c60e3d | 2540 | ftree-vectorizer-verbose= |
477e804b SS |
2541 | Common Joined RejectNegative Ignore |
2542 | Does nothing. Preserved for backward compatibility. | |
78c60e3d | 2543 | |
ea0f3e87 XDL |
2544 | ftree-loop-vectorize |
2545 | Common Report Var(flag_tree_loop_vectorize) Optimization | |
a7b2e184 | 2546 | Enable loop vectorization on trees. |
ea0f3e87 | 2547 | |
a70d6342 | 2548 | ftree-slp-vectorize |
ea0f3e87 | 2549 | Common Report Var(flag_tree_slp_vectorize) Optimization |
a7b2e184 | 2550 | Enable basic block vectorization (SLP) on trees. |
a70d6342 | 2551 | |
d6d11272 | 2552 | fvect-cost-model= |
b16650ac | 2553 | Common Joined RejectNegative Enum(vect_cost_model) Var(flag_vect_cost_model) Init(VECT_COST_MODEL_DEFAULT) Optimization |
a7b2e184 MS |
2554 | Specifies the cost model for vectorization. |
2555 | ||
8b5e1202 | 2556 | fsimd-cost-model= |
b16650ac | 2557 | Common Joined RejectNegative Enum(vect_cost_model) Var(flag_simd_cost_model) Init(VECT_COST_MODEL_UNLIMITED) Optimization |
a7b2e184 | 2558 | Specifies the vectorization cost model for code marked with a simd directive. |
8b5e1202 | 2559 | |
d6d11272 XDL |
2560 | Enum |
2561 | Name(vect_cost_model) Type(enum vect_cost_model) UnknownError(unknown vectorizer cost model %qs) | |
2562 | ||
2563 | EnumValue | |
2564 | Enum(vect_cost_model) String(unlimited) Value(VECT_COST_MODEL_UNLIMITED) | |
2565 | ||
2566 | EnumValue | |
2567 | Enum(vect_cost_model) String(dynamic) Value(VECT_COST_MODEL_DYNAMIC) | |
2568 | ||
2569 | EnumValue | |
2570 | Enum(vect_cost_model) String(cheap) Value(VECT_COST_MODEL_CHEAP) | |
2571 | ||
792ed98b | 2572 | fvect-cost-model |
d6d11272 XDL |
2573 | Common RejectNegative Alias(fvect-cost-model=,dynamic) |
2574 | Enables the dynamic vectorizer cost model. Preserved for backward compatibility. | |
2575 | ||
2576 | fno-vect-cost-model | |
2577 | Common RejectNegative Alias(fvect-cost-model=,unlimited) | |
2578 | Enables the unlimited vectorizer cost model. Preserved for backward compatibility. | |
792ed98b | 2579 | |
c12cc930 | 2580 | ftree-vect-loop-version |
d6d11272 XDL |
2581 | Common Ignore |
2582 | Does nothing. Preserved for backward compatibility. | |
c12cc930 | 2583 | |
fbf798fc | 2584 | ftree-scev-cprop |
21af5cdf | 2585 | Common Report Var(flag_tree_scev_cprop) Init(1) Optimization |
fbf798fc DN |
2586 | Enable copy propagation of scalar-evolution information. |
2587 | ||
31b66477 KC |
2588 | ; -fverbose-asm causes extra commentary information to be produced in |
2589 | ; the generated assembly code (to make it more readable). This option | |
2590 | ; is generally only of use to those who actually need to read the | |
2591 | ; generated assembly code (perhaps while debugging the compiler itself). | |
2592 | ; -fno-verbose-asm, the default, causes the extra information | |
2593 | ; to not be added and is useful when comparing two assembler files. | |
6ff3a151 | 2594 | fverbose-asm |
50431bc4 | 2595 | Common Report Var(flag_verbose_asm) |
a7b2e184 | 2596 | Add extra commentary to assembler output. |
6ff3a151 | 2597 | |
d7afec4b | 2598 | fvisibility= |
e6d4b984 | 2599 | Common Joined RejectNegative Enum(symbol_visibility) Var(default_visibility) Init(VISIBILITY_DEFAULT) |
a7b2e184 | 2600 | -fvisibility=[default|internal|hidden|protected] Set the default symbol visibility. |
d7afec4b | 2601 | |
e6d4b984 JM |
2602 | Enum |
2603 | Name(symbol_visibility) Type(enum symbol_visibility) UnknownError(unrecognized visibility value %qs) | |
2604 | ||
2605 | EnumValue | |
2606 | Enum(symbol_visibility) String(default) Value(VISIBILITY_DEFAULT) | |
2607 | ||
2608 | EnumValue | |
2609 | Enum(symbol_visibility) String(internal) Value(VISIBILITY_INTERNAL) | |
2610 | ||
2611 | EnumValue | |
2612 | Enum(symbol_visibility) String(hidden) Value(VISIBILITY_HIDDEN) | |
2613 | ||
2614 | EnumValue | |
2615 | Enum(symbol_visibility) String(protected) Value(VISIBILITY_PROTECTED) | |
d7afec4b | 2616 | |
2077db1b CT |
2617 | fvtable-verify= |
2618 | Common Joined RejectNegative Enum(vtv_priority) Var(flag_vtable_verify) Init(VTV_NO_PRIORITY) | |
2619 | Validate vtable pointers before using them. | |
2620 | ||
2621 | Enum | |
2622 | Name(vtv_priority) Type(enum vtv_priority) UnknownError(unknown vtable verify initialization priority %qs) | |
2623 | ||
2624 | EnumValue | |
2625 | Enum(vtv_priority) String(none) Value(VTV_NO_PRIORITY) | |
2626 | ||
2627 | EnumValue | |
2628 | Enum(vtv_priority) String(std) Value(VTV_STANDARD_PRIORITY) | |
2629 | ||
2630 | EnumValue | |
2631 | Enum(vtv_priority) String(preinit) Value(VTV_PREINIT_PRIORITY) | |
2632 | ||
2633 | fvtv-counts | |
2634 | Common Var(flag_vtv_counts) | |
2635 | Output vtable verification counters. | |
2636 | ||
2637 | fvtv-debug | |
2638 | Common Var(flag_vtv_debug) | |
2639 | Output vtable verification pointer sets information. | |
2640 | ||
fca9dc00 | 2641 | fvpt |
c662432e | 2642 | Common Report Var(flag_value_profile_transformations) Optimization |
a7b2e184 | 2643 | Use expression value profiles in optimizations. |
fca9dc00 | 2644 | |
62551c66 | 2645 | fweb |
c662432e | 2646 | Common Report Var(flag_web) Init(2) Optimization |
a7b2e184 | 2647 | Construct webs and split unrelated uses of single variable. |
62551c66 | 2648 | |
c2699190 XDL |
2649 | ftree-builtin-call-dce |
2650 | Common Report Var(flag_tree_builtin_call_dce) Init(0) Optimization | |
a7b2e184 | 2651 | Enable conditional dead code elimination for builtin calls. |
c2699190 | 2652 | |
ce91e74c | 2653 | fwhole-program |
b16650ac | 2654 | Common Report Var(flag_whole_program) Init(0) |
a7b2e184 | 2655 | Perform whole program optimizations. |
ce91e74c | 2656 | |
6ff3a151 | 2657 | fwrapv |
c662432e | 2658 | Common Report Var(flag_wrapv) Optimization |
a7b2e184 | 2659 | Assume signed arithmetic overflow wraps around. |
6ff3a151 | 2660 | |
6ff3a151 | 2661 | fzero-initialized-in-bss |
50431bc4 | 2662 | Common Report Var(flag_zero_initialized_in_bss) Init(1) |
a7b2e184 | 2663 | Put zero initialized data in the bss section. |
6ff3a151 | 2664 | |
e01cc6dc NB |
2665 | g |
2666 | Common JoinedOrMissing | |
a7b2e184 | 2667 | Generate debug information in default format. |
df38ffef NB |
2668 | |
2669 | gcoff | |
6782438d | 2670 | Common JoinedOrMissing Negative(gdwarf) |
a7b2e184 | 2671 | Generate debug information in COFF format. |
df38ffef | 2672 | |
6782438d SKS |
2673 | gdwarf |
2674 | Common JoinedOrMissing Negative(gdwarf-) | |
a7b2e184 | 2675 | Generate debug information in default version of DWARF format. |
6782438d | 2676 | |
53b2323e | 2677 | gdwarf- |
98095aa3 | 2678 | Common Joined UInteger Var(dwarf_version) Init(4) Negative(gstabs) |
a7b2e184 | 2679 | Generate debug information in DWARF v2 (or later) format. |
df38ffef NB |
2680 | |
2681 | ggdb | |
2682 | Common JoinedOrMissing | |
a7b2e184 | 2683 | Generate debug information in default extended format. |
df38ffef | 2684 | |
5175cbaf | 2685 | gno-pubnames |
7a1dd0fa | 2686 | Common Negative(gpubnames) Var(debug_generate_pub_sections, 0) Init(-1) |
5175cbaf SA |
2687 | Don't generate DWARF pubnames and pubtypes sections. |
2688 | ||
2689 | gpubnames | |
7a1dd0fa | 2690 | Common Negative(ggnu-pubnames) Var(debug_generate_pub_sections, 1) |
5175cbaf SA |
2691 | Generate DWARF pubnames and pubtypes sections. |
2692 | ||
7a1dd0fa SA |
2693 | ggnu-pubnames |
2694 | Common Negative(gno-pubnames) Var(debug_generate_pub_sections, 2) | |
2695 | Generate DWARF pubnames and pubtypes sections with GNU extensions. | |
2696 | ||
e967adf4 | 2697 | gno-record-gcc-switches |
98095aa3 | 2698 | Common RejectNegative Var(dwarf_record_gcc_switches,0) Init(1) |
e967adf4 JJ |
2699 | Don't record gcc command line switches in DWARF DW_AT_producer. |
2700 | ||
2701 | grecord-gcc-switches | |
2702 | Common RejectNegative Var(dwarf_record_gcc_switches,1) | |
2703 | Record gcc command line switches in DWARF DW_AT_producer. | |
2704 | ||
99ea153e SA |
2705 | gno-split-dwarf |
2706 | Common Driver RejectNegative Var(dwarf_split_debug_info,0) Init(0) | |
a7b2e184 | 2707 | Don't generate debug information in separate .dwo files. |
99ea153e SA |
2708 | |
2709 | gsplit-dwarf | |
2710 | Common Driver RejectNegative Var(dwarf_split_debug_info,1) | |
a7b2e184 | 2711 | Generate debug information in separate .dwo files. |
99ea153e | 2712 | |
df38ffef | 2713 | gstabs |
14c7833c | 2714 | Common JoinedOrMissing Negative(gstabs+) |
a7b2e184 | 2715 | Generate debug information in STABS format. |
df38ffef NB |
2716 | |
2717 | gstabs+ | |
14c7833c | 2718 | Common JoinedOrMissing Negative(gvms) |
a7b2e184 | 2719 | Generate debug information in extended STABS format. |
df38ffef | 2720 | |
65f753a0 | 2721 | gno-strict-dwarf |
98095aa3 | 2722 | Common RejectNegative Var(dwarf_strict,0) Init(0) |
a7b2e184 | 2723 | Emit DWARF additions beyond selected version. |
65f753a0 JJ |
2724 | |
2725 | gstrict-dwarf | |
f0036cca | 2726 | Common Report RejectNegative Var(dwarf_strict,1) |
a7b2e184 | 2727 | Don't emit DWARF additions beyond selected version. |
65f753a0 | 2728 | |
2153915d AO |
2729 | gtoggle |
2730 | Common Report Var(flag_gtoggle) | |
a7b2e184 | 2731 | Toggle debug information generation. |
2153915d | 2732 | |
df38ffef | 2733 | gvms |
14c7833c | 2734 | Common JoinedOrMissing Negative(gxcoff) |
a7b2e184 | 2735 | Generate debug information in VMS format. |
df38ffef NB |
2736 | |
2737 | gxcoff | |
14c7833c | 2738 | Common JoinedOrMissing Negative(gxcoff+) |
a7b2e184 | 2739 | Generate debug information in XCOFF format. |
df38ffef NB |
2740 | |
2741 | gxcoff+ | |
14c7833c | 2742 | Common JoinedOrMissing Negative(gcoff) |
a7b2e184 | 2743 | Generate debug information in extended XCOFF format. |
e01cc6dc | 2744 | |
29d7cbd1 RO |
2745 | Enum |
2746 | Name(compressed_debug_sections) Type(int) | |
2747 | ||
2748 | ; Since -gz= is completely handled in specs, the values aren't used and we | |
2749 | ; assign arbitrary constants. | |
2750 | EnumValue | |
2751 | Enum(compressed_debug_sections) String(none) Value(0) | |
2752 | ||
2753 | EnumValue | |
2754 | Enum(compressed_debug_sections) String(zlib) Value(1) | |
2755 | ||
2756 | EnumValue | |
2757 | Enum(compressed_debug_sections) String(zlib-gnu) Value(2) | |
2758 | ||
2759 | gz | |
2760 | Common Driver | |
a7b2e184 | 2761 | Generate compressed debug sections. |
29d7cbd1 RO |
2762 | |
2763 | gz= | |
2764 | Common Driver Joined Enum(compressed_debug_sections) | |
a7b2e184 | 2765 | -gz=<format> Generate compressed debug sections in format <format>. |
29d7cbd1 | 2766 | |
6d721f67 JM |
2767 | h |
2768 | Driver Joined Separate | |
2769 | ||
4adbd5dd MK |
2770 | iplugindir= |
2771 | Common Joined Var(plugindir_string) Init(0) | |
a7b2e184 | 2772 | -iplugindir=<dir> Set <dir> to be the default plugin directory. |
4adbd5dd | 2773 | |
e0cdc09f MK |
2774 | imultiarch |
2775 | Common Joined Separate RejectDriver Var(imultiarch) Init(0) | |
a7b2e184 | 2776 | -imultiarch <dir> Set <dir> to be the multiarch include subdirectory. |
e0cdc09f | 2777 | |
603349bf JM |
2778 | l |
2779 | Driver Joined Separate | |
2780 | ||
dd9f93dc JM |
2781 | n |
2782 | Driver | |
2783 | ||
603349bf JM |
2784 | no-canonical-prefixes |
2785 | Driver | |
2786 | ||
d9d16a19 JM |
2787 | nodefaultlibs |
2788 | Driver | |
2789 | ||
bab79a40 JM |
2790 | nostartfiles |
2791 | Driver | |
2792 | ||
d9d16a19 JM |
2793 | nostdlib |
2794 | Driver | |
2795 | ||
d185d268 | 2796 | o |
d5478783 | 2797 | Common Driver Joined Separate Var(asm_file_name) MissingArgError(missing filename after %qs) |
a7b2e184 | 2798 | -o <file> Place output into <file>. |
d185d268 NB |
2799 | |
2800 | p | |
50431bc4 | 2801 | Common Var(profile_flag) |
a7b2e184 | 2802 | Enable function profiling. |
d185d268 | 2803 | |
603349bf JM |
2804 | pass-exit-codes |
2805 | Driver Var(pass_exit_codes) | |
2806 | ||
d185d268 | 2807 | pedantic |
c1771a20 | 2808 | Common Alias(Wpedantic) |
d185d268 NB |
2809 | |
2810 | pedantic-errors | |
d5478783 | 2811 | Common Var(flag_pedantic_errors) |
a7b2e184 | 2812 | Like -pedantic but issue them as errors. |
d185d268 | 2813 | |
d9d16a19 JM |
2814 | pg |
2815 | Driver | |
2816 | ||
603349bf JM |
2817 | pipe |
2818 | Driver Var(use_pipes) | |
2819 | ||
2820 | print-file-name= | |
2821 | Driver JoinedOrMissing Var(print_file_name) | |
2822 | ||
2823 | print-libgcc-file-name | |
2824 | Driver | |
2825 | ||
2826 | print-multi-directory | |
2827 | Driver Var(print_multi_directory) | |
2828 | ||
2829 | print-multi-lib | |
2830 | Driver Var(print_multi_lib) | |
2831 | ||
2832 | print-multi-os-directory | |
2833 | Driver Var(print_multi_os_directory) | |
a7b2e184 | 2834 | |
e0cdc09f MK |
2835 | print-multiarch |
2836 | Driver Var(print_multiarch) | |
603349bf JM |
2837 | |
2838 | print-prog-name= | |
2839 | Driver JoinedOrMissing Var(print_prog_name) | |
2840 | ||
2841 | print-search-dirs | |
2842 | Driver Var(print_search_dirs) | |
2843 | ||
2844 | print-sysroot | |
2845 | Driver Var(print_sysroot) | |
2846 | ||
2847 | print-sysroot-headers-suffix | |
2848 | Driver Var(print_sysroot_headers_suffix) | |
2849 | ||
d7b42618 | 2850 | quiet |
603349bf | 2851 | Common Var(quiet_flag) RejectDriver |
a7b2e184 | 2852 | Do not display functions compiled or elapsed time. |
d7b42618 | 2853 | |
dd9f93dc JM |
2854 | r |
2855 | Driver | |
2856 | ||
2857 | s | |
2858 | Driver | |
2859 | ||
603349bf JM |
2860 | save-temps |
2861 | Driver | |
2862 | ||
2863 | save-temps= | |
2864 | Driver Joined | |
2865 | ||
dd9f93dc JM |
2866 | t |
2867 | Driver | |
2868 | ||
603349bf JM |
2869 | time |
2870 | Driver Var(report_times) | |
2871 | ||
2872 | time= | |
2873 | Driver JoinedOrMissing | |
2874 | ||
e200444e JM |
2875 | u |
2876 | Driver Joined Separate | |
2877 | ||
5642f5d5 JM |
2878 | undef |
2879 | Driver | |
2880 | ; C option, but driver must not handle as "-u ndef". | |
2881 | ||
603349bf | 2882 | v |
d5478783 | 2883 | Common Driver Var(verbose_flag) |
a7b2e184 | 2884 | Enable verbose output. |
603349bf | 2885 | |
d185d268 | 2886 | version |
603349bf | 2887 | Common Var(version_flag) RejectDriver |
a7b2e184 | 2888 | Display the compiler's version. |
d185d268 NB |
2889 | |
2890 | w | |
50431bc4 | 2891 | Common Var(inhibit_warnings) |
a7b2e184 | 2892 | Suppress warnings. |
d185d268 | 2893 | |
603349bf JM |
2894 | wrapper |
2895 | Driver Separate Var(wrapper_string) | |
2896 | ||
2897 | x | |
2898 | Driver Joined Separate | |
2899 | ||
528dc603 | 2900 | shared |
5460e1fc | 2901 | Driver RejectNegative Negative(pie) |
a7b2e184 | 2902 | Create a shared library. |
528dc603 | 2903 | |
603349bf JM |
2904 | shared-libgcc |
2905 | Driver | |
2906 | ||
2907 | specs | |
5de8299c | 2908 | Driver Separate Alias(specs=) |
603349bf JM |
2909 | |
2910 | specs= | |
2911 | Driver Joined | |
2912 | ||
d9d16a19 JM |
2913 | static |
2914 | Driver | |
2915 | ||
603349bf JM |
2916 | static-libgcc |
2917 | Driver | |
2918 | ||
2919 | static-libgfortran | |
2920 | Driver | |
2921 | ; Documented for Fortran, but always accepted by driver. | |
2922 | ||
2923 | static-libstdc++ | |
2924 | Driver | |
2925 | ||
7a938933 ILT |
2926 | static-libgo |
2927 | Driver | |
2928 | ; Documented for Go, but always accepted by driver. | |
2929 | ||
7e8d1b2d L |
2930 | static-libasan |
2931 | Driver | |
2932 | ||
32b4b7f5 DV |
2933 | static-libtsan |
2934 | Driver | |
2935 | ||
9065ada9 JJ |
2936 | static-liblsan |
2937 | Driver | |
2938 | ||
de5a5fa1 MP |
2939 | static-libubsan |
2940 | Driver | |
2941 | ||
e200444e JM |
2942 | symbolic |
2943 | Driver | |
2944 | ||
428b3812 | 2945 | no-pie |
5460e1fc | 2946 | Driver RejectNegative Negative(shared) |
a7b2e184 | 2947 | Don't create a position independent executable. |
428b3812 L |
2948 | |
2949 | pie | |
2950 | Driver RejectNegative Negative(no-pie) | |
a7b2e184 | 2951 | Create a position independent executable. |
528dc603 | 2952 | |
6d721f67 JM |
2953 | z |
2954 | Driver Joined Separate | |
2955 | ||
1e288103 TV |
2956 | fipa-ra |
2957 | Common Report Var(flag_ipa_ra) Optimization | |
a7b2e184 | 2958 | Use caller save register across calls if possible. |
d996e61a | 2959 | |
d7b42618 | 2960 | ; This comment is to ensure we retain the blank line above. |