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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 | |
85ec4feb | 3 | ; Copyright (C) 2003-2018 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 | |
5b42d196 JH |
51 | ; can still be bound) and 2 indicates that the IL is going to be linked and |
52 | ; and output to LTO object file. | |
1ff9ed6f | 53 | Variable |
5b42d196 | 54 | enum incremental_link flag_incremental_link = INCREMENTAL_LINK_NONE |
1ff9ed6f | 55 | |
a75bfaa6 JM |
56 | ; 0 means straightforward implementation of complex divide acceptable. |
57 | ; 1 means wide ranges of inputs must work for complex divide. | |
58 | ; 2 means C99-like requirements for complex multiply and divide. | |
59 | Variable | |
60 | int flag_complex_method = 1 | |
61 | ||
a75bfaa6 JM |
62 | ; Language specific warning pass for unused results. |
63 | Variable | |
64 | bool flag_warn_unused_result = false | |
65 | ||
48476d13 JM |
66 | Variable |
67 | int *param_values | |
68 | ||
d5478783 JM |
69 | ; Nonzero if we should write GIMPLE bytecode for link-time optimization. |
70 | Variable | |
71 | int flag_generate_lto | |
72 | ||
f0d78df9 IV |
73 | ; Nonzero if we should write GIMPLE bytecode for offload compilation. |
74 | Variable | |
75 | int flag_generate_offload = 0 | |
76 | ||
d5478783 JM |
77 | ; Nonzero means we should be saving declaration info into a .X file. |
78 | Variable | |
79 | int flag_gen_aux_info = 0 | |
80 | ||
81 | ; Nonzero if we are compiling code for a shared library, zero for | |
82 | ; executable. | |
83 | Variable | |
84 | int flag_shlib | |
85 | ||
6a1f6c9c JM |
86 | ; These two are really VEC(char_p,heap) *. |
87 | ||
88 | Variable | |
89 | void *flag_instrument_functions_exclude_functions | |
90 | ||
91 | Variable | |
92 | void *flag_instrument_functions_exclude_files | |
93 | ||
69ccdddb JM |
94 | ; Generic structs (e.g. templates not explicitly specialized) |
95 | ; may not have a compilation unit associated with them, and so | |
96 | ; may need to be treated differently from ordinary structs. | |
97 | ; | |
98 | ; Structs only handled by reference (indirectly), will also usually | |
99 | ; not need as much debugging information. | |
100 | ||
101 | Variable | |
102 | enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
103 | ||
104 | Variable | |
105 | enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
106 | ||
0576d21f JM |
107 | ; True if we should exit after parsing options. |
108 | Variable | |
109 | bool exit_after_options | |
110 | ||
111 | ; Type(s) of debugging information we are producing (if any). See | |
112 | ; flag-types.h for the definitions of the different possible types of | |
113 | ; debugging information. | |
114 | Variable | |
115 | enum debug_info_type write_symbols = NO_DEBUG | |
116 | ||
117 | ; Level of debugging information we are producing. See flag-types.h | |
118 | ; for the definitions of the different possible levels. | |
119 | Variable | |
120 | enum debug_info_levels debug_info_level = DINFO_LEVEL_NONE | |
121 | ||
122 | ; Nonzero means use GNU-only extensions in the generated symbolic | |
123 | ; debugging information. Currently, this only has an effect when | |
d7d5f241 | 124 | ; write_symbols is set to DBX_DEBUG or XCOFF_DEBUG. |
0576d21f JM |
125 | Variable |
126 | bool use_gnu_debug_info_extensions | |
127 | ||
299404a1 JM |
128 | ; Original value of maximum field alignment in bytes, specified via |
129 | ; -fpack-struct=<value>. | |
130 | Variable | |
131 | unsigned int initial_max_fld_align = TARGET_DEFAULT_PACK_STRUCT | |
132 | ||
5e471ea6 JM |
133 | ; Type of stack check. |
134 | Variable | |
135 | enum stack_check_type flag_stack_check = NO_STACK_CHECK | |
136 | ||
a11e0df4 EB |
137 | ; True if stack usage information needs to be computed. |
138 | Variable | |
139 | bool flag_stack_usage_info = false | |
140 | ||
299404a1 JM |
141 | ; -dA causes debug commentary information to be produced in |
142 | ; the generated assembly code (to make it more readable). This option | |
143 | ; is generally only of use to those who actually need to read the | |
144 | ; generated assembly code (perhaps while debugging the compiler itself). | |
145 | ; Currently, this switch is only used by dwarf2out.c; however, it is intended | |
146 | ; to be a catchall for printing debug information in the assembler file. | |
147 | Variable | |
148 | int flag_debug_asm | |
149 | ||
417ca011 TD |
150 | ; How many NOP insns to place at each function entry by default |
151 | Variable | |
152 | HOST_WIDE_INT function_entry_patch_area_size | |
153 | ||
154 | ; And how far the real asm entry point is into this area | |
155 | Variable | |
156 | HOST_WIDE_INT function_entry_patch_area_start | |
6592d14b PMR |
157 | |
158 | ; Balance between GNAT encodings and standard DWARF to emit. | |
159 | Variable | |
160 | enum dwarf_gnat_encodings gnat_encodings = DWARF_GNAT_ENCODINGS_DEFAULT | |
161 | ||
299404a1 JM |
162 | ; -dP causes the rtl to be emitted as a comment in assembly. |
163 | Variable | |
164 | int flag_dump_rtl_in_asm | |
165 | ||
166 | ; Whether -da was passed (used only in handle_common_deferred_options). | |
167 | Variable | |
168 | bool flag_dump_all_passed | |
169 | ||
170 | ; Other flags saying which kinds of debugging dump have been requested. | |
171 | ||
172 | Variable | |
173 | int rtl_dump_and_exit | |
174 | ||
175 | Variable | |
176 | int flag_print_asm_name | |
177 | ||
a803773f JM |
178 | ; Name of top-level original source file (what was input to cpp). |
179 | ; This comes from the #-command at the beginning of the actual input. | |
180 | ; If there isn't any there, then this is the cc1 input file name. | |
181 | Variable | |
182 | const char *main_input_filename | |
183 | ||
184 | ; Pointer to base name in main_input_filename, with directories and a | |
185 | ; single final extension removed, and the length of this base | |
186 | ; name. | |
187 | ||
188 | Variable | |
189 | const char *main_input_basename | |
190 | ||
191 | Variable | |
192 | int main_input_baselength | |
193 | ||
299404a1 JM |
194 | ; Which options have been printed by --help. |
195 | Variable | |
196 | char *help_printed | |
197 | ||
e6d4b984 JM |
198 | ; Which enums have been printed by --help. 0 = not printed, no |
199 | ; relevant options seen, 1 = relevant option seen, not yet printed, 2 | |
200 | ; = printed. | |
201 | Variable | |
202 | char *help_enum_printed | |
203 | ||
299404a1 JM |
204 | ; The number of columns for --help output. |
205 | Variable | |
206 | unsigned int help_columns | |
207 | ||
208 | ; Whether this options structure has been through finish_options | |
209 | Variable | |
210 | bool flag_opts_finished | |
211 | ||
de5a5fa1 MP |
212 | ; What the sanitizer should instrument |
213 | Variable | |
214 | unsigned int flag_sanitize | |
215 | ||
d95a2703 JJ |
216 | ; What sanitizers should recover from errors |
217 | Variable | |
45b2222a | 218 | unsigned int flag_sanitize_recover = (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT | SANITIZE_KERNEL_ADDRESS) & ~(SANITIZE_UNREACHABLE | SANITIZE_RETURN) |
d95a2703 | 219 | |
f6e50a7d WW |
220 | ; What the coverage sanitizers should instrument |
221 | Variable | |
222 | unsigned int flag_sanitize_coverage | |
95e7bbb8 | 223 | |
91035653 JJ |
224 | ; Flag whether a prefix has been added to dump_base_name |
225 | Variable | |
226 | bool dump_base_name_prefixed = false | |
227 | ||
b2b40051 MJ |
228 | ; Flag whether HSA generation has been explicitely disabled |
229 | Variable | |
230 | bool flag_disable_hsa = false | |
231 | ||
603349bf JM |
232 | ### |
233 | Driver | |
234 | ||
e200444e JM |
235 | -assemble |
236 | Driver Alias(S) | |
237 | ||
238 | -compile | |
239 | Driver Alias(c) | |
240 | ||
d86c7648 ML |
241 | -completion= |
242 | Common Driver Joined Undocumented | |
243 | Provide bash completion for options starting with provided string. | |
244 | ||
e200444e JM |
245 | -coverage |
246 | Driver Alias(coverage) | |
247 | ||
248 | -debug | |
249 | Common Alias(g) | |
250 | ||
251 | -dump | |
252 | Common Separate Alias(d) | |
253 | ||
254 | -dump= | |
255 | Common Joined Alias(d) | |
256 | ||
257 | -dumpbase | |
258 | Common Separate Alias(dumpbase) | |
259 | ||
260 | -dumpdir | |
261 | Common Separate Alias(dumpdir) | |
262 | ||
263 | -entry | |
264 | Driver Separate Alias(e) | |
265 | ||
266 | -entry= | |
267 | Driver Joined Alias(e) | |
268 | ||
269 | -extra-warnings | |
270 | Common Warning Alias(Wextra) | |
271 | ||
272 | -for-assembler | |
273 | Driver Separate Alias(Xassembler) | |
274 | ||
275 | -for-assembler= | |
276 | Driver JoinedOrMissing Alias(Xassembler) | |
277 | ||
278 | -for-linker | |
279 | Driver Separate Alias(Xlinker) | |
280 | ||
281 | -for-linker= | |
282 | Driver JoinedOrMissing Alias(Xlinker) | |
283 | ||
284 | -force-link | |
285 | Driver Separate Alias(u) | |
286 | ||
287 | -force-link= | |
288 | Driver Joined Alias(u) | |
289 | ||
d185d268 | 290 | -help |
e200444e | 291 | Common Driver Var(help_flag) |
a7b2e184 | 292 | Display this information. |
d185d268 | 293 | |
c662432e | 294 | -help= |
603349bf | 295 | Common Driver Report Joined |
a7b2e184 | 296 | --help=<class> Display descriptions of a specific class of options. <class> is one or more of optimizers, target, warnings, undocumented, params. |
903caebf | 297 | |
e200444e JM |
298 | -language |
299 | Driver Separate Alias(x) | |
300 | ||
301 | -language= | |
302 | Driver Joined Alias(x) | |
303 | ||
304 | -library-directory | |
305 | Driver Separate Alias(L) | |
306 | ||
307 | -library-directory= | |
308 | Driver Joined Alias(L) | |
309 | ||
310 | -no-canonical-prefixes | |
311 | Driver Alias(no-canonical-prefixes) | |
312 | ||
313 | -no-standard-libraries | |
314 | Driver Alias(nostdlib) | |
315 | ||
28b4fc51 JM |
316 | -no-sysroot-suffix |
317 | Driver Var(no_sysroot_suffix) | |
318 | ||
e200444e JM |
319 | -no-warnings |
320 | Common Alias(w) | |
321 | ||
322 | -optimize | |
323 | Common Alias(O) | |
324 | ||
325 | -output | |
326 | Common Driver Separate Alias(o) MissingArgError(missing filename after %qs) | |
327 | ||
328 | -output= | |
329 | Common Driver Joined Alias(o) MissingArgError(missing filename after %qs) | |
330 | ||
331 | -pass-exit-codes | |
332 | Driver Alias(pass-exit-codes) | |
333 | ||
334 | -pedantic | |
c1771a20 | 335 | Common Alias(Wpedantic) |
e200444e JM |
336 | |
337 | -pedantic-errors | |
338 | Common Alias(pedantic-errors) | |
339 | ||
340 | -pie | |
5460e1fc | 341 | Driver Alias(pie) |
e200444e | 342 | |
b4fed890 L |
343 | -static-pie |
344 | Driver Alias(static-pie) | |
345 | ||
e200444e JM |
346 | -pipe |
347 | Driver Alias(pipe) | |
348 | ||
349 | -prefix | |
350 | Driver Separate Alias(B) | |
351 | ||
352 | -prefix= | |
353 | Driver JoinedOrMissing Alias(B) | |
354 | ||
355 | -preprocess | |
356 | Driver Alias(E) | |
357 | ||
358 | -print-file-name | |
359 | Driver Separate Alias(print-file-name=) | |
360 | ||
361 | -print-file-name= | |
362 | Driver JoinedOrMissing Alias(print-file-name=) | |
363 | ||
364 | -print-libgcc-file-name | |
365 | Driver Alias(print-libgcc-file-name) | |
366 | ||
367 | -print-multi-directory | |
368 | Driver Alias(print-multi-directory) | |
369 | ||
370 | -print-multi-lib | |
371 | Driver Alias(print-multi-lib) | |
372 | ||
373 | -print-multi-os-directory | |
374 | Driver Alias(print-multi-os-directory) | |
375 | ||
e0cdc09f MK |
376 | -print-multiarch |
377 | Driver Alias(print-multiarch) | |
378 | ||
e200444e JM |
379 | -print-prog-name |
380 | Driver Separate Alias(print-prog-name=) | |
381 | ||
382 | -print-prog-name= | |
383 | Driver JoinedOrMissing Alias(print-prog-name=) | |
384 | ||
385 | -print-search-dirs | |
386 | Driver Alias(print-search-dirs) | |
387 | ||
388 | -print-sysroot | |
389 | Driver Alias(print-sysroot) | |
390 | ||
391 | -print-sysroot-headers-suffix | |
392 | Driver Alias(print-sysroot-headers-suffix) | |
393 | ||
394 | -profile | |
395 | Common Alias(p) | |
396 | ||
397 | -save-temps | |
398 | Driver Alias(save-temps) | |
399 | ||
400 | -shared | |
5460e1fc | 401 | Driver Alias(shared) |
e200444e JM |
402 | |
403 | -specs | |
404 | Driver Separate Alias(specs=) | |
405 | ||
406 | -specs= | |
407 | Driver Joined Alias(specs=) | |
408 | ||
409 | -static | |
410 | Driver Alias(static) | |
411 | ||
412 | -symbolic | |
413 | Driver Alias(symbolic) | |
414 | ||
d185d268 | 415 | -target-help |
603349bf | 416 | Common Driver |
a7b2e184 | 417 | Alias for --help=target. |
c662432e | 418 | |
e200444e JM |
419 | -time |
420 | Driver Alias(time) | |
421 | ||
422 | -verbose | |
423 | Driver Alias(v) | |
424 | ||
425 | ;; The driver used to convert options such as --help into forms such | |
426 | ;; as -fhelp; the following four entries are for compatibility with | |
427 | ;; any direct uses of those (undocumented) -f forms | |
c662432e | 428 | fhelp |
e200444e | 429 | Common Driver Alias(-help) |
c662432e NC |
430 | |
431 | fhelp= | |
e200444e | 432 | Common Driver Joined Alias(-help=) |
c662432e NC |
433 | |
434 | ftarget-help | |
e200444e | 435 | Common Driver Alias(-target-help) |
c662432e | 436 | |
41fd0f9b | 437 | fversion |
e200444e | 438 | Common Driver Alias(-version) |
41fd0f9b | 439 | |
c662432e NC |
440 | -param |
441 | Common Separate | |
a7b2e184 | 442 | --param <param>=<value> Set parameter <param> to value. See below for a complete list of parameters. |
d185d268 | 443 | |
e200444e JM |
444 | -param= |
445 | Common Joined Alias(-param) | |
446 | ||
447 | -sysroot | |
448 | Driver Separate Alias(-sysroot=) | |
449 | ||
603349bf JM |
450 | -sysroot= |
451 | Driver JoinedOrMissing | |
452 | ||
d185d268 | 453 | -version |
603349bf JM |
454 | Common Driver |
455 | ||
456 | B | |
457 | Driver Joined Separate | |
458 | ||
459 | E | |
460 | Driver | |
d185d268 | 461 | |
d9d16a19 JM |
462 | L |
463 | Driver Joined Separate | |
464 | ||
dd9f93dc JM |
465 | N |
466 | Driver | |
467 | ||
903caebf | 468 | O |
ab442df7 | 469 | Common JoinedOrMissing Optimization |
a7b2e184 | 470 | -O<number> Set optimization level to <number>. |
903caebf NB |
471 | |
472 | Os | |
ab442df7 | 473 | Common Optimization |
a7b2e184 | 474 | Optimize for space rather than speed. |
903caebf | 475 | |
be6d3f0e RG |
476 | Ofast |
477 | Common Optimization | |
a7b2e184 | 478 | Optimize for speed disregarding exact standards compliance. |
be6d3f0e | 479 | |
bf7a7185 RG |
480 | Og |
481 | Common Optimization | |
a7b2e184 | 482 | Optimize for debugging experience rather than speed or size. |
bf7a7185 | 483 | |
dd9f93dc JM |
484 | Q |
485 | Driver | |
486 | ||
487 | Qn | |
488 | Driver Negative(Qy) | |
489 | ||
490 | Qy | |
491 | Driver Negative(Qn) | |
492 | ||
6d721f67 JM |
493 | R |
494 | Driver Joined Separate | |
495 | ||
603349bf JM |
496 | S |
497 | Driver | |
498 | ||
6d721f67 JM |
499 | T |
500 | Driver Joined Separate | |
501 | ||
502 | Tbss | |
503 | Driver Separate | |
504 | ||
e69d7376 JM |
505 | Tbss= |
506 | Driver Joined | |
507 | ||
6d721f67 JM |
508 | Tdata |
509 | Driver Separate | |
510 | ||
e69d7376 JM |
511 | Tdata= |
512 | Driver Joined | |
513 | ||
6d721f67 JM |
514 | Ttext |
515 | Driver Separate | |
516 | ||
e69d7376 JM |
517 | Ttext= |
518 | Driver Joined | |
519 | ||
903caebf | 520 | W |
5de8299c | 521 | Common RejectNegative Warning Alias(Wextra) |
a7b2e184 | 522 | This switch is deprecated; use -Wextra instead. |
903caebf | 523 | |
603349bf | 524 | Wa, |
9ed32e27 | 525 | Driver JoinedOrMissing RejectNegative |
603349bf JM |
526 | |
527 | Wl, | |
9ed32e27 | 528 | Driver JoinedOrMissing RejectNegative |
603349bf JM |
529 | |
530 | Wp, | |
9ed32e27 | 531 | Driver JoinedOrMissing RejectNegative |
603349bf | 532 | |
e01cc6dc | 533 | Waggregate-return |
c662432e | 534 | Common Var(warn_aggregate_return) Warning |
a7b2e184 | 535 | Warn about returning structures, unions or arrays. |
e01cc6dc | 536 | |
fbd28bc3 JJ |
537 | Waggressive-loop-optimizations |
538 | Common Var(warn_aggressive_loop_optimizations) Init(1) Warning | |
a7b2e184 | 539 | Warn if a loop with constant number of iterations triggers undefined behavior. |
fbd28bc3 | 540 | |
590b1f2d | 541 | Warray-bounds |
21af5cdf | 542 | Common Var(warn_array_bounds) Warning |
a7b2e184 | 543 | Warn if an array is accessed out of bounds. |
590b1f2d | 544 | |
de1b5c17 | 545 | Warray-bounds= |
63010089 | 546 | Common Joined RejectNegative UInteger Var(warn_array_bounds) Warning IntegerRange(0, 2) |
a7b2e184 | 547 | Warn if an array is accessed out of bounds. |
de1b5c17 | 548 | |
5c498b10 | 549 | Wattributes |
c662432e | 550 | Common Var(warn_attributes) Init(1) Warning |
a7b2e184 | 551 | Warn about inappropriate attribute usage. |
5c498b10 | 552 | |
7a866e7e MS |
553 | Wattribute-alias |
554 | Common Var(warn_attributes) Init(1) Warning | |
555 | Warn about type safety and similar errors in attribute alias and related. | |
556 | ||
6902799c IL |
557 | Wcannot-profile |
558 | Common Var(warn_cannot_profile) Init(1) Warning | |
559 | Warn when profiling instrumentation was requested, but could not be applied to | |
560 | a certain function. | |
561 | ||
e01cc6dc | 562 | Wcast-align |
c662432e | 563 | Common Var(warn_cast_align) Warning |
a7b2e184 | 564 | Warn about pointer casts which increase alignment. |
e01cc6dc | 565 | |
1d933576 BE |
566 | Wcast-align=strict |
567 | Common Var(warn_cast_align,2) Warning | |
568 | Warn about pointer casts which increase alignment. | |
569 | ||
87cf0651 SB |
570 | Wcpp |
571 | Common Var(warn_cpp) Init(1) Warning | |
a7b2e184 | 572 | Warn when a #warning directive is encountered. |
87cf0651 | 573 | |
e01cc6dc | 574 | Wdeprecated-declarations |
c662432e | 575 | Common Var(warn_deprecated_decl) Init(1) Warning |
a7b2e184 | 576 | Warn about uses of __attribute__((deprecated)) declarations. |
e01cc6dc NB |
577 | |
578 | Wdisabled-optimization | |
c662432e | 579 | Common Var(warn_disabled_optimization) Warning |
a7b2e184 | 580 | Warn when an optimization pass is disabled. |
e01cc6dc NB |
581 | |
582 | Werror | |
50431bc4 | 583 | Common Var(warnings_are_errors) |
a7b2e184 | 584 | Treat all warnings as errors. |
e01cc6dc | 585 | |
79cf5994 DD |
586 | Werror= |
587 | Common Joined | |
a7b2e184 | 588 | Treat specified warning as error. |
79cf5994 | 589 | |
903caebf | 590 | Wextra |
62a67c94 | 591 | Common Var(extra_warnings) Warning |
a7b2e184 | 592 | Print extra (possibly unwanted) warnings. |
903caebf | 593 | |
c65a01af | 594 | Wfatal-errors |
50431bc4 | 595 | Common Var(flag_fatal_errors) |
a7b2e184 | 596 | Exit on the first error occurred. |
c65a01af | 597 | |
a214518f | 598 | Wframe-larger-than= |
00abf86c MS |
599 | Common RejectNegative Joined Host_Wide_Int ByteSize Warning Var(warn_frame_larger_than_size) Init(HOST_WIDE_INT_MAX) |
600 | -Wframe-larger-than=<byte-size> Warn if a function's stack frame requires in excess of <byte-size>. | |
a214518f | 601 | |
a3a704a4 MH |
602 | Wfree-nonheap-object |
603 | Common Var(warn_free_nonheap_object) Init(1) Warning | |
a7b2e184 | 604 | Warn when attempting to free a non-heap object. |
a3a704a4 | 605 | |
b2b40051 MJ |
606 | Whsa |
607 | Common Var(warn_hsa) Init(1) Warning | |
608 | Warn when a function cannot be expanded to HSAIL. | |
609 | ||
81fea426 | 610 | Wimplicit-fallthrough |
70f6d5e1 JJ |
611 | Common Alias(Wimplicit-fallthrough=,3,0) Warning |
612 | ||
613 | Wimplicit-fallthrough= | |
63010089 | 614 | Common Var(warn_implicit_fallthrough) RejectNegative Joined UInteger Warning IntegerRange(0, 5) |
81fea426 MP |
615 | Warn when a switch case falls through. |
616 | ||
e01cc6dc | 617 | Winline |
c662432e | 618 | Common Var(warn_inline) Warning |
a7b2e184 | 619 | Warn when an inlined function cannot be inlined. |
e01cc6dc | 620 | |
86951993 AM |
621 | Winvalid-memory-model |
622 | Common Var(warn_invalid_memory_model) Init(1) Warning | |
623 | Warn when an atomic memory model parameter is known to be outside the valid range. | |
624 | ||
e01cc6dc | 625 | Wlarger-than- |
5de8299c | 626 | Common RejectNegative Joined Warning Undocumented Alias(Wlarger-than=) |
e8fc888d MLI |
627 | |
628 | Wlarger-than= | |
00abf86c MS |
629 | Common RejectNegative Joined Host_Wide_Int ByteSize Warning Var(warn_larger_than_size) Init(HOST_WIDE_INT_MAX) |
630 | -Wlarger-than=<byte-size> Warn if an object's size exceeds <byte-size>. | |
e01cc6dc | 631 | |
bf14eba2 JJ |
632 | Wnonnull-compare |
633 | Var(warn_nonnull_compare) Warning | |
634 | Warn if comparing pointer parameter with nonnull attribute with NULL. | |
635 | ||
76787f70 | 636 | Wnull-dereference |
c2d89095 | 637 | Common Var(warn_null_dereference) Warning |
a7b2e184 | 638 | Warn if dereferencing a NULL pointer may lead to erroneous or undefined behavior. |
76787f70 | 639 | |
f9cc1a70 | 640 | Wunsafe-loop-optimizations |
ee79110c JJ |
641 | Common Ignore Warning |
642 | Does nothing. Preserved for backward compatibility. | |
f9cc1a70 | 643 | |
e01cc6dc | 644 | Wmissing-noreturn |
54d62f51 | 645 | Common Warning Alias(Wsuggest-attribute=noreturn) |
e01cc6dc | 646 | |
c59f7203 | 647 | Wodr |
a0fd3373 | 648 | Common Var(warn_odr_violations) Init(1) Warning |
a7b2e184 | 649 | Warn about some C++ One Definition Rule violations during link time optimization. |
c59f7203 | 650 | |
71834ad3 | 651 | Woverflow |
c662432e | 652 | Common Var(warn_overflow) Init(1) Warning |
a7b2e184 | 653 | Warn about overflow in arithmetic expressions. |
71834ad3 | 654 | |
259d29e3 JH |
655 | Wlto-type-mismatch |
656 | Common Var(warn_lto_type_mismatch) Init(1) Warning | |
a7b2e184 | 657 | During link time optimization warn about mismatched types of global declarations. |
259d29e3 | 658 | |
e01cc6dc | 659 | Wpacked |
c662432e | 660 | Common Var(warn_packed) Warning |
a7b2e184 | 661 | Warn when the packed attribute has no effect on struct layout. |
e01cc6dc NB |
662 | |
663 | Wpadded | |
c662432e | 664 | Common Var(warn_padded) Warning |
a7b2e184 | 665 | Warn when padding is required to align structure members. |
e01cc6dc | 666 | |
c1771a20 | 667 | Wpedantic |
2b71f4a4 | 668 | Common Var(pedantic) Init(0) Warning |
a7b2e184 | 669 | Issue warnings needed for strict compliance to the standard. |
c1771a20 | 670 | |
b4dfdc11 MG |
671 | Wreturn-local-addr |
672 | Common Var(warn_return_local_addr) Init(1) Warning | |
673 | Warn about returning a pointer/reference to a local or temporary variable. | |
674 | ||
e01cc6dc | 675 | Wshadow |
c662432e | 676 | Common Var(warn_shadow) Warning |
84ff4775 LCW |
677 | Warn when one variable shadows another. Same as -Wshadow=global. |
678 | ||
679 | Wshadow=global | |
680 | Common Warning Alias(Wshadow) | |
681 | Warn when one variable shadows another (globally). | |
682 | ||
683 | Wshadow=local | |
684 | Common Var(warn_shadow_local) Warning EnabledBy(Wshadow) | |
685 | Warn when one local variable shadows another local variable or parameter. | |
686 | ||
687 | Wshadow-local | |
688 | Common Warning Undocumented Alias(Wshadow=local) | |
689 | ||
690 | Wshadow=compatible-local | |
691 | Common Var(warn_shadow_compatible_local) Warning EnabledBy(Wshadow=local) | |
692 | Warn when one local variable shadows another local variable or parameter of compatible type. | |
693 | ||
694 | Wshadow-compatible-local | |
695 | Common Warning Undocumented Alias(Wshadow=compatible-local) | |
e01cc6dc | 696 | |
7d69de61 | 697 | Wstack-protector |
c662432e | 698 | Common Var(warn_stack_protect) Warning |
a7b2e184 | 699 | Warn when not issuing stack smashing protection for some reason. |
7d69de61 | 700 | |
a11e0df4 | 701 | Wstack-usage= |
00abf86c MS |
702 | Common Joined RejectNegative Host_Wide_Int ByteSize Var(warn_stack_usage) Warning Init(HOST_WIDE_INT_MAX) |
703 | -Wstack-usage=<byte-size> Warn if stack usage might exceed <byte-size>. | |
a11e0df4 | 704 | |
e01cc6dc | 705 | Wstrict-aliasing |
c662432e | 706 | Common Warning |
a7b2e184 | 707 | Warn about code which might break strict aliasing rules. |
e01cc6dc | 708 | |
5399d643 | 709 | Wstrict-aliasing= |
65d4f2cd | 710 | Common Joined RejectNegative UInteger Var(warn_strict_aliasing) Warning |
a7b2e184 | 711 | Warn about code which might break strict aliasing rules. |
5399d643 | 712 | |
6ac01510 | 713 | Wstrict-overflow |
21af5cdf | 714 | Common Warning |
a7b2e184 | 715 | Warn about optimizations that assume that signed overflow is undefined. |
6ac01510 ILT |
716 | |
717 | Wstrict-overflow= | |
65d4f2cd | 718 | Common Joined RejectNegative UInteger Var(warn_strict_overflow) Warning |
a7b2e184 | 719 | Warn about optimizations that assume that signed overflow is undefined. |
6ac01510 | 720 | |
12b9f3ac JH |
721 | Wsuggest-attribute=cold |
722 | Common Var(warn_suggest_attribute_cold) Warning | |
723 | Warn about functions which might be candidates for __attribute__((cold)). | |
724 | ||
5dc16b19 MLI |
725 | Wsuggest-attribute=const |
726 | Common Var(warn_suggest_attribute_const) Warning | |
a7b2e184 | 727 | Warn about functions which might be candidates for __attribute__((const)). |
5dc16b19 MLI |
728 | |
729 | Wsuggest-attribute=pure | |
730 | Common Var(warn_suggest_attribute_pure) Warning | |
a7b2e184 | 731 | Warn about functions which might be candidates for __attribute__((pure)). |
5dc16b19 | 732 | |
7ea6b6cf JH |
733 | Wsuggest-attribute=noreturn |
734 | Common Var(warn_suggest_attribute_noreturn) Warning | |
a7b2e184 | 735 | Warn about functions which might be candidates for __attribute__((noreturn)). |
7ea6b6cf | 736 | |
0fab169b PK |
737 | Wsuggest-attribute=malloc |
738 | Common Var(warn_suggest_attribute_malloc) Warning | |
739 | Warn about functions which might be candidates for __attribute__((malloc)). | |
740 | ||
91bc34a9 JH |
741 | Wsuggest-final-types |
742 | Common Var(warn_suggest_final_types) Warning | |
a7b2e184 | 743 | Warn about C++ polymorphic types where adding final keyword would improve code quality. |
91bc34a9 JH |
744 | |
745 | Wsuggest-final-methods | |
746 | Common Var(warn_suggest_final_methods) Warning | |
a7b2e184 | 747 | Warn about C++ virtual methods where adding final keyword would improve code quality. |
91bc34a9 | 748 | |
a7dc5980 MP |
749 | Wswitch-unreachable |
750 | Common Var(warn_switch_unreachable) Warning Init(1) | |
751 | Warn about statements between switch's controlling expression and the first | |
752 | case. | |
753 | ||
e01cc6dc | 754 | Wsystem-headers |
c662432e | 755 | Common Var(warn_system_headers) Warning |
a7b2e184 | 756 | Do not suppress warnings from system headers. |
e01cc6dc | 757 | |
8ffadef9 MG |
758 | Wtrampolines |
759 | Common Var(warn_trampolines) Warning | |
a7b2e184 | 760 | Warn whenever a trampoline is generated. |
8ffadef9 | 761 | |
faebccf9 | 762 | Wtype-limits |
95744782 | 763 | Common Var(warn_type_limits) Warning EnabledBy(Wextra) |
a7b2e184 | 764 | Warn if a comparison is always true or always false due to the limited range of the data type. |
faebccf9 | 765 | |
e01cc6dc | 766 | Wuninitialized |
7d5a5747 | 767 | Common Var(warn_uninitialized) Warning EnabledBy(Wextra) |
a7b2e184 | 768 | Warn about uninitialized automatic variables. |
e01cc6dc | 769 | |
2f964ad6 | 770 | Wmaybe-uninitialized |
7d5a5747 | 771 | Common Var(warn_maybe_uninitialized) Warning EnabledBy(Wuninitialized) |
a7b2e184 | 772 | Warn about maybe uninitialized automatic variables. |
2f964ad6 | 773 | |
e01cc6dc | 774 | Wunreachable-code |
f1a62b6f | 775 | Common Ignore Warning |
bc3c12a2 | 776 | Does nothing. Preserved for backward compatibility. |
e01cc6dc | 777 | |
903caebf | 778 | Wunused |
e73f7547 | 779 | Common Var(warn_unused) Init(0) Warning |
a7b2e184 | 780 | Enable all -Wunused- warnings. |
903caebf | 781 | |
ebfbbdc5 | 782 | Wunused-but-set-parameter |
d919140b | 783 | Common Var(warn_unused_but_set_parameter) Warning EnabledBy(Wunused && Wextra) |
a7b2e184 | 784 | Warn when a function parameter is only set, otherwise unused. |
ebfbbdc5 JJ |
785 | |
786 | Wunused-but-set-variable | |
7d5a5747 | 787 | Common Var(warn_unused_but_set_variable) Warning EnabledBy(Wunused) |
a7b2e184 | 788 | Warn when a variable is only set, otherwise unused. |
ebfbbdc5 | 789 | |
e01cc6dc | 790 | Wunused-function |
7d5a5747 | 791 | Common Var(warn_unused_function) Warning EnabledBy(Wunused) |
a7b2e184 | 792 | Warn when a function is unused. |
e01cc6dc NB |
793 | |
794 | Wunused-label | |
7d5a5747 | 795 | Common Var(warn_unused_label) Warning EnabledBy(Wunused) |
a7b2e184 | 796 | Warn when a label is unused. |
e01cc6dc NB |
797 | |
798 | Wunused-parameter | |
d919140b | 799 | Common Var(warn_unused_parameter) Warning EnabledBy(Wunused && Wextra) |
a7b2e184 | 800 | Warn when a function parameter is unused. |
e01cc6dc NB |
801 | |
802 | Wunused-value | |
7d5a5747 | 803 | Common Var(warn_unused_value) Warning EnabledBy(Wunused) |
a7b2e184 | 804 | Warn when an expression value is unused. |
e01cc6dc NB |
805 | |
806 | Wunused-variable | |
7d5a5747 | 807 | Common Var(warn_unused_variable) Warning EnabledBy(Wunused) |
a7b2e184 | 808 | Warn when a variable is unused. |
e01cc6dc | 809 | |
16c1c158 | 810 | Wcoverage-mismatch |
650cfcab | 811 | Common Var(warn_coverage_mismatch) Init(1) Warning |
a7b2e184 | 812 | Warn in case profiles in -fprofile-use do not match. |
16c1c158 | 813 | |
cdbb5ba3 AS |
814 | Wvector-operation-performance |
815 | Common Var(warn_vector_operation_performance) Warning | |
a7b2e184 | 816 | Warn when a vector operation is compiled outside the SIMD. |
cdbb5ba3 | 817 | |
603349bf JM |
818 | Xassembler |
819 | Driver Separate | |
820 | ||
821 | Xlinker | |
822 | Driver Separate | |
823 | ||
824 | Xpreprocessor | |
825 | Driver Separate | |
826 | ||
dd9f93dc JM |
827 | Z |
828 | Driver | |
829 | ||
d185d268 | 830 | aux-info |
d5478783 | 831 | Common Separate Var(aux_info_file_name) |
a7b2e184 | 832 | -aux-info <file> Emit declaration information into <file>. |
d185d268 NB |
833 | |
834 | aux-info= | |
5de8299c | 835 | Common Joined Alias(aux-info) |
d185d268 NB |
836 | |
837 | auxbase | |
d5478783 | 838 | Common Separate RejectDriver Var(aux_base_name) |
d185d268 NB |
839 | |
840 | auxbase-strip | |
603349bf JM |
841 | Common Separate RejectDriver |
842 | ||
e200444e JM |
843 | coverage |
844 | Driver | |
845 | ||
603349bf JM |
846 | c |
847 | Driver | |
d185d268 NB |
848 | |
849 | d | |
850 | Common Joined | |
a7b2e184 | 851 | -d<letters> Enable dumps from specific passes of the compiler. |
d185d268 NB |
852 | |
853 | dumpbase | |
d5478783 | 854 | Common Separate Var(dump_base_name) |
a7b2e184 | 855 | -dumpbase <file> Set the file basename to be used for dumps. |
d185d268 | 856 | |
d7fb0a6d | 857 | dumpdir |
d5478783 | 858 | Common Separate Var(dump_dir_name) |
a7b2e184 | 859 | -dumpdir <dir> Set the directory name to be used for dumps. |
d7fb0a6d | 860 | |
603349bf JM |
861 | dumpmachine |
862 | Driver | |
863 | ||
864 | dumpspecs | |
865 | Driver | |
866 | ||
867 | dumpversion | |
868 | Driver | |
869 | ||
3c36aa6b JJ |
870 | dumpfullversion |
871 | Driver | |
872 | ||
e200444e JM |
873 | e |
874 | Driver Joined Separate | |
875 | ||
fa381cb2 JM |
876 | ; This option has historically been passed down to the linker by an |
877 | ; accident of a %{e*} spec, so ensure it continues to be passed down | |
878 | ; as a single option. The supported option for this purpose is | |
879 | ; -rdynamic. See PR 47390. | |
880 | export-dynamic | |
881 | Driver Undocumented | |
882 | ||
31b66477 KC |
883 | ; The version of the C++ ABI in use. The following values are allowed: |
884 | ; | |
885 | ; 0: The version of the ABI believed most conformant with the C++ ABI | |
886 | ; specification. This ABI may change as bugs are discovered and fixed. | |
887 | ; Therefore, 0 will not necessarily indicate the same ABI in different | |
888 | ; versions of G++. | |
889 | ; | |
90d84934 | 890 | ; 1: The version of the ABI first used in G++ 3.2. No longer selectable. |
31b66477 | 891 | ; |
785f21af JM |
892 | ; 2: The version of the ABI first used in G++ 3.4, and the default |
893 | ; until GCC 4.9. | |
abfe01ce JM |
894 | ; |
895 | ; 3: The version of the ABI that fixes the missing underscore | |
896 | ; in template non-type arguments of pointer type. | |
897 | ; | |
898 | ; 4: The version of the ABI that introduces unambiguous mangling of | |
55af847f | 899 | ; vector types. First selectable in G++ 4.5. |
99a8d35b | 900 | ; |
67e18edb | 901 | ; 5: The version of the ABI that ignores attribute const/noreturn |
55af847f | 902 | ; in function pointer mangling, and corrects mangling of decltype and |
67e18edb | 903 | ; function parameters used in other parameters and the return type. |
55af847f | 904 | ; First selectable in G++ 4.6. |
67e18edb | 905 | ; |
4b6aaa99 JM |
906 | ; 6: The version of the ABI that doesn't promote scoped enums to int and |
907 | ; changes the mangling of template argument packs, const/static_cast, | |
908 | ; prefix ++ and --, and a class scope function used as a template | |
909 | ; argument. | |
967444bb JM |
910 | ; First selectable in G++ 4.7. |
911 | ; | |
622aac0b JM |
912 | ; 7: The version of the ABI that treats nullptr_t as a builtin type and |
913 | ; corrects the mangling of lambdas in default argument scope. | |
a3ddb738 | 914 | ; First selectable in G++ 4.8. |
0861bec8 JM |
915 | ; |
916 | ; 8: The version of the ABI that corrects the substitution behavior of | |
917 | ; function types with function-cv-qualifiers. | |
603eaec4 JM |
918 | ; First selectable in G++ 4.9 and default in G++ 5. |
919 | ; | |
a03c9bf1 JM |
920 | ; 9: The version of the ABI that corrects the alignment of nullptr_t. |
921 | ; First selectable and default in G++ 5.2. | |
922 | ; | |
923 | ; 10: The version of the ABI that mangles attributes that affect type | |
924 | ; identity, such as ia32 calling convention attributes (stdcall, etc.) | |
925 | ; Default in G++ 6 (set in c_common_post_options). | |
0861bec8 | 926 | ; |
31f7f784 JM |
927 | ; 11: The version of the ABI that corrects mangling of sizeof... expressions |
928 | ; and introduces new inheriting constructor handling. | |
34bbc4c5 JM |
929 | ; Default in G++ 7. |
930 | ; | |
f3ec182d | 931 | ; 12: Corrects the calling convention for classes with only deleted copy/move |
974aedcc | 932 | ; constructors and changes passing/returning of empty records. |
34a7a230 JM |
933 | ; Default in G++ 8.1. |
934 | ; | |
935 | ; 13: Fixes the accidental change in 12 to the calling convention for classes | |
936 | ; with deleted copy constructor and trivial move constructor. | |
937 | ; Default in G++ 8.2. | |
f3ec182d | 938 | ; |
31b66477 KC |
939 | ; Additional positive integers will be assigned as new versions of |
940 | ; the ABI become the default version of the ABI. | |
57782ad8 | 941 | fabi-version= |
ca0e51a0 | 942 | Common Joined RejectNegative UInteger Var(flag_abi_version) Init(0) |
a7b2e184 | 943 | The version of the C++ ABI in use. |
57782ad8 | 944 | |
6e616110 | 945 | faggressive-loop-optimizations |
a7b2e184 MS |
946 | Common Report Var(flag_aggressive_loop_optimizations) Optimization Init(1) |
947 | Aggressively optimize loops using language constraints. | |
6e616110 | 948 | |
6ff3a151 | 949 | falign-functions |
c518c102 | 950 | Common Report Var(flag_align_functions) Optimization |
a7b2e184 | 951 | Align the start of functions. |
6ff3a151 | 952 | |
058de654 | 953 | falign-functions= |
c518c102 | 954 | Common RejectNegative Joined Var(str_align_functions) Optimization |
058de654 | 955 | |
8cac4d85 BS |
956 | flimit-function-alignment |
957 | Common Report Var(flag_limit_function_alignment) Optimization Init(0) | |
958 | ||
6ff3a151 | 959 | falign-jumps |
c518c102 | 960 | Common Report Var(flag_align_jumps) Optimization |
a7b2e184 | 961 | Align labels which are only reached by jumping. |
6ff3a151 | 962 | |
058de654 | 963 | falign-jumps= |
c518c102 | 964 | Common RejectNegative Joined Var(str_align_jumps) Optimization |
058de654 | 965 | |
6ff3a151 | 966 | falign-labels |
c518c102 | 967 | Common Report Var(flag_align_labels) Optimization |
a7b2e184 | 968 | Align all labels. |
6ff3a151 | 969 | |
058de654 | 970 | falign-labels= |
c518c102 | 971 | Common RejectNegative Joined Var(str_align_labels) Optimization |
058de654 | 972 | |
6ff3a151 | 973 | falign-loops |
c518c102 | 974 | Common Report Var(flag_align_loops) Optimization |
a7b2e184 | 975 | Align the start of loops. |
6ff3a151 | 976 | |
058de654 | 977 | falign-loops= |
8956e247 | 978 | Common RejectNegative Joined Var(str_align_loops) Optimization |
058de654 | 979 | |
6ff3a151 | 980 | fargument-alias |
2d2bd949 | 981 | Common Ignore |
0d3c82d6 | 982 | Does nothing. Preserved for backward compatibility. |
6ff3a151 NB |
983 | |
984 | fargument-noalias | |
2d2bd949 | 985 | Common Ignore |
0d3c82d6 | 986 | Does nothing. Preserved for backward compatibility. |
6ff3a151 NB |
987 | |
988 | fargument-noalias-global | |
2d2bd949 | 989 | Common Ignore |
0d3c82d6 | 990 | Does nothing. Preserved for backward compatibility. |
6ff3a151 | 991 | |
0698a1d2 | 992 | fargument-noalias-anything |
2d2bd949 | 993 | Common Ignore |
0d3c82d6 | 994 | Does nothing. Preserved for backward compatibility. |
0698a1d2 | 995 | |
de5a5fa1 MP |
996 | fsanitize= |
997 | Common Driver Report Joined | |
a7b2e184 | 998 | Select what to sanitize. |
32b4b7f5 | 999 | |
f6e50a7d WW |
1000 | fsanitize-coverage= |
1001 | Common Report Joined | |
cefc0906 | 1002 | Select type of coverage sanitization. |
f6e50a7d | 1003 | |
fd960af2 YG |
1004 | fasan-shadow-offset= |
1005 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
1006 | -fasan-shadow-offset=<number> Use custom shadow memory offset. | |
1007 | ||
18af8d16 YG |
1008 | fsanitize-sections= |
1009 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
1010 | -fsanitize-sections=<sec1,sec2,...> Sanitize global variables | |
1011 | in user-defined sections. | |
1012 | ||
d95a2703 JJ |
1013 | fsanitize-recover= |
1014 | Common Report Joined | |
a7b2e184 | 1015 | After diagnosing undefined behavior attempt to continue execution. |
1c33c9b7 | 1016 | |
d95a2703 JJ |
1017 | fsanitize-recover |
1018 | Common Report | |
a7b2e184 | 1019 | This switch is deprecated; use -fsanitize-recover= instead. |
d95a2703 | 1020 | |
6dc4a604 ML |
1021 | fsanitize-address-use-after-scope |
1022 | Common Driver Report Var(flag_sanitize_address_use_after_scope) Init(0) | |
1023 | ||
1c33c9b7 | 1024 | fsanitize-undefined-trap-on-error |
0115b91d | 1025 | Common Driver Report Var(flag_sanitize_undefined_trap_on_error) Init(0) |
a7b2e184 | 1026 | Use trap instead of a library function for undefined behavior sanitization. |
1c33c9b7 | 1027 | |
6ff3a151 | 1028 | fasynchronous-unwind-tables |
c662432e | 1029 | Common Report Var(flag_asynchronous_unwind_tables) Optimization |
a7b2e184 | 1030 | Generate unwind tables that are exact at each instruction boundary. |
6ff3a151 | 1031 | |
6fb5fa3c | 1032 | fauto-inc-dec |
b16650ac | 1033 | Common Report Var(flag_auto_inc_dec) Init(1) Optimization |
a7b2e184 | 1034 | Generate auto-inc/dec instructions. |
6fb5fa3c | 1035 | |
be3c16c4 | 1036 | fauto-profile |
b16650ac | 1037 | Common Report Var(flag_auto_profile) |
be3c16c4 DC |
1038 | Use sample profile information for call graph node weights. The default |
1039 | profile file is fbdata.afdo in 'pwd'. | |
1040 | ||
1041 | fauto-profile= | |
1042 | Common Joined RejectNegative Var(auto_profile_file) | |
1043 | Use sample profile information for call graph node weights. The profile | |
1044 | file is specified in the argument. | |
1045 | ||
31b66477 KC |
1046 | ; -fcheck-bounds causes gcc to generate array bounds checks. |
1047 | ; For C, C++ and ObjC: defaults off. | |
1048 | ; For Java: defaults to on. | |
1049 | ; For Fortran: defaults to off. | |
6ff3a151 | 1050 | fbounds-check |
50431bc4 | 1051 | Common Report Var(flag_bounds_check) |
a7b2e184 | 1052 | Generate code to check bounds before indexing arrays. |
6ff3a151 NB |
1053 | |
1054 | fbranch-count-reg | |
14379e66 | 1055 | Common Report Var(flag_branch_on_count_reg) Optimization |
a7b2e184 | 1056 | Replace add, compare, branch with branch on count register. |
6ff3a151 NB |
1057 | |
1058 | fbranch-probabilities | |
c662432e | 1059 | Common Report Var(flag_branch_probabilities) Optimization |
a7b2e184 | 1060 | Use profiling information for branch probabilities. |
6ff3a151 | 1061 | |
de32c0cb | 1062 | fbranch-target-load-optimize |
c662432e | 1063 | Common Report Var(flag_branch_target_load_optimize) Optimization |
a7b2e184 | 1064 | Perform branch target load optimization before prologue / epilogue threading. |
de32c0cb NB |
1065 | |
1066 | fbranch-target-load-optimize2 | |
c662432e | 1067 | Common Report Var(flag_branch_target_load_optimize2) Optimization |
a7b2e184 | 1068 | Perform branch target load optimization after prologue / epilogue threading. |
de32c0cb | 1069 | |
1194fc79 | 1070 | fbtr-bb-exclusive |
c662432e | 1071 | Common Report Var(flag_btr_bb_exclusive) Optimization |
a7b2e184 | 1072 | Restrict target load migration not to re-use registers in any basic block. |
1194fc79 | 1073 | |
058de654 | 1074 | fcall-saved- |
21bf1558 | 1075 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 1076 | -fcall-saved-<register> Mark <register> as being preserved across functions. |
058de654 NB |
1077 | |
1078 | fcall-used- | |
21bf1558 | 1079 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 1080 | -fcall-used-<register> Mark <register> as being corrupted by function calls. |
058de654 | 1081 | |
31b66477 KC |
1082 | ; Nonzero for -fcaller-saves: allocate values in regs that need to |
1083 | ; be saved across function calls, if that produces overall better code. | |
1084 | ; Optional now, so people can test it. | |
de32c0cb | 1085 | fcaller-saves |
c662432e | 1086 | Common Report Var(flag_caller_saves) Optimization |
a7b2e184 | 1087 | Save registers around function calls. |
de32c0cb | 1088 | |
3d8864c0 SP |
1089 | fcheck-data-deps |
1090 | Common Report Var(flag_check_data_deps) | |
49b8fe6c | 1091 | This switch is deprecated; do not use. |
3d8864c0 | 1092 | |
2284b034 MG |
1093 | fcheck-new |
1094 | Common Var(flag_check_new) | |
a7b2e184 | 1095 | Check the return value of new in C++. |
2284b034 | 1096 | |
6d27d749 | 1097 | fchecking |
b06f87c7 | 1098 | Common Var(flag_checking) Init(CHECKING_P ? ENABLE_EXTRA_CHECKING ? 2 : 1 : 0) |
6d27d749 RB |
1099 | Perform internal consistency checkings. |
1100 | ||
7db11a5a JJ |
1101 | fchecking= |
1102 | Common Joined RejectNegative UInteger Var(flag_checking) | |
1103 | Perform internal consistency checkings. | |
1104 | ||
37ccb0ba SB |
1105 | fcode-hoisting |
1106 | Common Report Var(flag_code_hoisting) Optimization | |
1107 | Enable code hoisting. | |
1108 | ||
ccaeeafe NC |
1109 | fcombine-stack-adjustments |
1110 | Common Report Var(flag_combine_stack_adjustments) Optimization | |
1111 | Looks for opportunities to reduce stack adjustments and stack references. | |
1112 | ||
6ff3a151 | 1113 | fcommon |
b16650ac | 1114 | Common Report Var(flag_no_common,0) |
a7b2e184 | 1115 | Do not put uninitialized globals in the common section. |
6ff3a151 | 1116 | |
603349bf JM |
1117 | fcompare-debug |
1118 | Driver | |
1119 | ; Converted by the driver to -fcompare-debug= options. | |
1120 | ||
2153915d | 1121 | fcompare-debug= |
603349bf | 1122 | Common Driver JoinedOrMissing RejectNegative Var(flag_compare_debug_opt) |
a7b2e184 | 1123 | -fcompare-debug[=<opts>] Compile with and without e.g. -gtoggle, and compare the final-insns dump. |
2153915d AO |
1124 | |
1125 | fcompare-debug-second | |
5e471ea6 | 1126 | Common Driver RejectNegative Var(flag_compare_debug) |
a7b2e184 | 1127 | Run only the second compilation of -fcompare-debug. |
2153915d | 1128 | |
e692f276 RH |
1129 | fcompare-elim |
1130 | Common Report Var(flag_compare_elim_after_reload) Optimization | |
a7b2e184 | 1131 | Perform comparison elimination after register allocation has finished. |
e692f276 | 1132 | |
b5b8b0ac AO |
1133 | fconserve-stack |
1134 | Common Var(flag_conserve_stack) Optimization | |
a7b2e184 | 1135 | Do not perform optimizations increasing noticeably stack usage. |
b5b8b0ac | 1136 | |
6ff3a151 | 1137 | fcprop-registers |
c662432e | 1138 | Common Report Var(flag_cprop_registers) Optimization |
a7b2e184 | 1139 | Perform a register copy-propagation optimization pass. |
6ff3a151 | 1140 | |
de32c0cb | 1141 | fcrossjumping |
c662432e | 1142 | Common Report Var(flag_crossjumping) Optimization |
a7b2e184 | 1143 | Perform cross-jumping optimization. |
de32c0cb NB |
1144 | |
1145 | fcse-follow-jumps | |
c662432e | 1146 | Common Report Var(flag_cse_follow_jumps) Optimization |
a7b2e184 | 1147 | When running CSE, follow jumps to their targets. |
de32c0cb NB |
1148 | |
1149 | fcse-skip-blocks | |
2d2bd949 | 1150 | Common Ignore |
5f39ad47 | 1151 | Does nothing. Preserved for backward compatibility. |
de32c0cb | 1152 | |
c7463669 | 1153 | fcx-limited-range |
5e46b0c6 | 1154 | Common Report Var(flag_cx_limited_range) Optimization SetByCombined |
a7b2e184 | 1155 | Omit range reduction step when performing complex division. |
c7463669 | 1156 | |
35085f76 JB |
1157 | fcx-fortran-rules |
1158 | Common Report Var(flag_cx_fortran_rules) Optimization | |
a7b2e184 | 1159 | Complex multiplication and division follow Fortran rules. |
35085f76 | 1160 | |
6ff3a151 | 1161 | fdata-sections |
b16650ac | 1162 | Common Report Var(flag_data_sections) |
a7b2e184 | 1163 | Place data items into their own section. |
6ff3a151 | 1164 | |
0a090f42 | 1165 | fdbg-cnt-list |
299404a1 | 1166 | Common Report Var(common_deferred_options) Defer |
0a090f42 SP |
1167 | List all available debugging counters with their limits and counts. |
1168 | ||
6fb5fa3c | 1169 | fdbg-cnt= |
299404a1 | 1170 | Common RejectNegative Joined Var(common_deferred_options) Defer |
cdc3b883 | 1171 | -fdbg-cnt=<counter>[:<lower_limit>]:<upper_limit>[,<counter>:...] Set the debug counter limit. |
6fb5fa3c | 1172 | |
c8aea42c | 1173 | fdebug-prefix-map= |
299404a1 | 1174 | Common Joined RejectNegative Var(common_deferred_options) Defer |
7365279f BK |
1175 | -fdebug-prefix-map=<old>=<new> Map one directory name to another in debug information. |
1176 | ||
1177 | ffile-prefix-map= | |
1178 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
1179 | -ffile-prefix-map=<old>=<new> Map one directory name to another in compilation result. | |
c8aea42c | 1180 | |
76f9db36 | 1181 | fdebug-types-section |
98095aa3 | 1182 | Common Report Var(flag_debug_types_section) Init(0) |
76f9db36 JJ |
1183 | Output .debug_types section when using DWARF v4 debuginfo. |
1184 | ||
31b66477 KC |
1185 | ; Nonzero for -fdefer-pop: don't pop args after each function call |
1186 | ; instead save them up to pop many calls' args with one insns. | |
de32c0cb | 1187 | fdefer-pop |
c662432e | 1188 | Common Report Var(flag_defer_pop) Optimization |
a7b2e184 | 1189 | Defer popping functions args from stack until later. |
de32c0cb NB |
1190 | |
1191 | fdelayed-branch | |
c662432e | 1192 | Common Report Var(flag_delayed_branch) Optimization |
a7b2e184 | 1193 | Attempt to fill delay slots of branch instructions. |
de32c0cb | 1194 | |
2da02156 | 1195 | fdelete-dead-exceptions |
b16650ac | 1196 | Common Report Var(flag_delete_dead_exceptions) Init(0) Optimization |
a7b2e184 | 1197 | Delete dead instructions that may throw exceptions. |
2da02156 | 1198 | |
de32c0cb | 1199 | fdelete-null-pointer-checks |
467d8d51 | 1200 | Common Report Var(flag_delete_null_pointer_checks) Init(-1) Optimization |
a7b2e184 | 1201 | Delete useless null pointer checks. |
de32c0cb | 1202 | |
1e29e4d3 JH |
1203 | fdevirtualize-at-ltrans |
1204 | Common Report Var(flag_ltrans_devirtualize) | |
a7b2e184 | 1205 | Stream extra data to support more aggressive devirtualization in LTO local transformation mode. |
1e29e4d3 | 1206 | |
bbc9396b JH |
1207 | fdevirtualize-speculatively |
1208 | Common Report Var(flag_devirtualize_speculatively) Optimization | |
a7b2e184 | 1209 | Perform speculative devirtualization. |
bbc9396b | 1210 | |
ca1eedf6 JH |
1211 | fdevirtualize |
1212 | Common Report Var(flag_devirtualize) Optimization | |
1213 | Try to convert virtual calls to direct ones. | |
1214 | ||
de32c0cb | 1215 | fdiagnostics-show-location= |
e6d4b984 | 1216 | Common Joined RejectNegative Enum(diagnostic_prefixing_rule) |
a7b2e184 | 1217 | -fdiagnostics-show-location=[once|every-line] How often to emit source location at the beginning of line-wrapped diagnostics. |
de32c0cb | 1218 | |
e6d4b984 JM |
1219 | ; Required for these enum values. |
1220 | SourceInclude | |
1221 | pretty-print.h | |
1222 | ||
1223 | Enum | |
1224 | Name(diagnostic_prefixing_rule) Type(int) | |
1225 | ||
1226 | EnumValue | |
1227 | Enum(diagnostic_prefixing_rule) String(once) Value(DIAGNOSTICS_SHOW_PREFIX_ONCE) | |
1228 | ||
1229 | EnumValue | |
1230 | Enum(diagnostic_prefixing_rule) String(every-line) Value(DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE) | |
1231 | ||
9fec0042 MLI |
1232 | fdiagnostics-show-caret |
1233 | Common Var(flag_diagnostics_show_caret) Init(1) | |
a7b2e184 | 1234 | Show the source line with a caret indicating the column. |
9fec0042 | 1235 | |
4b84d650 JJ |
1236 | fdiagnostics-color |
1237 | Common Alias(fdiagnostics-color=,always,never) | |
1238 | ; | |
1239 | ||
1240 | fdiagnostics-color= | |
97aa8bb6 | 1241 | Driver Common Joined RejectNegative Var(flag_diagnostics_show_color) Enum(diagnostic_color_rule) Init(DIAGNOSTICS_COLOR_NO) |
a7b2e184 | 1242 | -fdiagnostics-color=[never|always|auto] Colorize diagnostics. |
4b84d650 JJ |
1243 | |
1244 | ; Required for these enum values. | |
1245 | SourceInclude | |
1246 | diagnostic-color.h | |
1247 | ||
1248 | Enum | |
1249 | Name(diagnostic_color_rule) Type(int) | |
1250 | ||
1251 | EnumValue | |
1252 | Enum(diagnostic_color_rule) String(never) Value(DIAGNOSTICS_COLOR_NO) | |
1253 | ||
1254 | EnumValue | |
1255 | Enum(diagnostic_color_rule) String(always) Value(DIAGNOSTICS_COLOR_YES) | |
1256 | ||
1257 | EnumValue | |
1258 | Enum(diagnostic_color_rule) String(auto) Value(DIAGNOSTICS_COLOR_AUTO) | |
1259 | ||
a93eac6a DM |
1260 | fdiagnostics-parseable-fixits |
1261 | Common Var(flag_diagnostics_parseable_fixits) | |
8135a004 | 1262 | Print fix-it hints in machine-readable form. |
a93eac6a | 1263 | |
717ebe91 DM |
1264 | fdiagnostics-generate-patch |
1265 | Common Var(flag_diagnostics_generate_patch) | |
1266 | Print fix-it hints to stderr in unified diff format. | |
1267 | ||
ccf08a6e | 1268 | fdiagnostics-show-option |
c7d0de89 | 1269 | Common Var(flag_diagnostics_show_option) Init(1) |
a7b2e184 | 1270 | Amend appropriate diagnostic messages with the command line option that controls them. |
ccf08a6e | 1271 | |
226c52aa XDL |
1272 | fdisable- |
1273 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
a7b2e184 | 1274 | -fdisable-[tree|rtl|ipa]-<pass>=range1+range2 disables an optimization pass. |
226c52aa XDL |
1275 | |
1276 | fenable- | |
1277 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
a7b2e184 | 1278 | -fenable-[tree|rtl|ipa]-<pass>=range1+range2 enables an optimization pass. |
226c52aa | 1279 | |
6de9cd9a | 1280 | fdump- |
21bf1558 | 1281 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 1282 | -fdump-<type> Dump various compiler internals to a file. |
6de9cd9a | 1283 | |
d1583032 JM |
1284 | fdump-final-insns |
1285 | Driver RejectNegative | |
1286 | ||
2153915d AO |
1287 | fdump-final-insns= |
1288 | Common RejectNegative Joined Var(flag_dump_final_insns) | |
a7b2e184 | 1289 | -fdump-final-insns=filename Dump to filename the insns at the end of translation. |
2153915d | 1290 | |
c6a13190 ILT |
1291 | fdump-go-spec= |
1292 | Common RejectNegative Joined Var(flag_dump_go_spec) | |
a7b2e184 | 1293 | -fdump-go-spec=filename Write all declarations to file as Go code. |
c6a13190 | 1294 | |
24a7799e R |
1295 | fdump-noaddr |
1296 | Common Report Var(flag_dump_noaddr) | |
a7b2e184 | 1297 | Suppress output of addresses in debugging dumps. |
24a7799e | 1298 | |
dc10fd96 JJ |
1299 | freport-bug |
1300 | Common Driver Var(flag_report_bug) | |
1301 | Collect and dump debug information into temporary file if ICE in C/C++ | |
bd2c6270 | 1302 | compiler occurred. |
dc10fd96 | 1303 | |
ba4ad400 DM |
1304 | fdump-internal-locations |
1305 | Common Var(flag_dump_locations) Init(0) | |
a7b2e184 | 1306 | Dump detailed information on GCC's internal representation of source code locations. |
ba4ad400 | 1307 | |
deced1e2 XDL |
1308 | fdump-passes |
1309 | Common Var(flag_dump_passes) Init(0) | |
a7b2e184 | 1310 | Dump optimization passes. |
deced1e2 | 1311 | |
6ff3a151 | 1312 | fdump-unnumbered |
e90afde6 | 1313 | Common Report Var(flag_dump_unnumbered) |
a7b2e184 | 1314 | Suppress output of instruction numbers, line number notes and addresses in debugging dumps. |
6ff3a151 | 1315 | |
2aa7c49b | 1316 | fdump-unnumbered-links |
e90afde6 | 1317 | Common Report Var(flag_dump_unnumbered_links) |
a7b2e184 | 1318 | Suppress output of previous and next insn numbers in debugging dumps. |
2aa7c49b | 1319 | |
b5b8b0ac AO |
1320 | fdwarf2-cfi-asm |
1321 | Common Report Var(flag_dwarf2_cfi_asm) Init(HAVE_GAS_CFI_DIRECTIVE) | |
1322 | Enable CFI tables via GAS assembler directives. | |
1323 | ||
355866de | 1324 | fearly-inlining |
c662432e | 1325 | Common Report Var(flag_early_inlining) Init(1) Optimization |
a7b2e184 | 1326 | Perform early inlining. |
355866de | 1327 | |
de32c0cb | 1328 | feliminate-dwarf2-dups |
1823c4f6 RB |
1329 | Common Ignore |
1330 | Does nothing. Preserved for backward compatibility. | |
de32c0cb | 1331 | |
07ffa034 MJ |
1332 | fipa-sra |
1333 | Common Report Var(flag_ipa_sra) Init(0) Optimization | |
a7b2e184 | 1334 | Perform interprocedural reduction of aggregates. |
07ffa034 | 1335 | |
6a08f7b3 | 1336 | feliminate-unused-debug-symbols |
50431bc4 | 1337 | Common Report Var(flag_debug_only_used_symbols) |
a7b2e184 | 1338 | Perform unused symbol elimination in debug info. |
6a08f7b3 | 1339 | |
de32c0cb | 1340 | feliminate-unused-debug-types |
50431bc4 | 1341 | Common Report Var(flag_eliminate_unused_debug_types) Init(1) |
a7b2e184 | 1342 | Perform unused type elimination in debug info. |
de32c0cb | 1343 | |
e713adf6 | 1344 | femit-class-debug-always |
eae8e474 | 1345 | Common Report Var(flag_emit_class_debug_always) Init(0) |
e713adf6 CD |
1346 | Do not suppress C++ class debug information. |
1347 | ||
6ff3a151 | 1348 | fexceptions |
c662432e | 1349 | Common Report Var(flag_exceptions) Optimization |
a7b2e184 | 1350 | Enable exception handling. |
6ff3a151 | 1351 | |
de32c0cb | 1352 | fexpensive-optimizations |
c662432e | 1353 | Common Report Var(flag_expensive_optimizations) Optimization |
a7b2e184 | 1354 | Perform a number of minor, expensive optimizations. |
de32c0cb | 1355 | |
8ce94e44 | 1356 | fexcess-precision= |
314e1b47 | 1357 | Common Joined RejectNegative Enum(excess_precision) Var(flag_excess_precision_cmdline) Init(EXCESS_PRECISION_DEFAULT) SetByCombined |
a7b2e184 | 1358 | -fexcess-precision=[fast|standard] Specify handling of excess floating-point precision. |
8ce94e44 | 1359 | |
e6d4b984 JM |
1360 | Enum |
1361 | Name(excess_precision) Type(enum excess_precision) UnknownError(unknown excess precision style %qs) | |
1362 | ||
1363 | EnumValue | |
1364 | Enum(excess_precision) String(fast) Value(EXCESS_PRECISION_FAST) | |
1365 | ||
1366 | EnumValue | |
1367 | Enum(excess_precision) String(standard) Value(EXCESS_PRECISION_STANDARD) | |
1368 | ||
04f0fcf7 JG |
1369 | ; Whether we permit the extended set of values for FLT_EVAL_METHOD |
1370 | ; introduced in ISO/IEC TS 18661-3, or limit ourselves to those in C99/C11. | |
1371 | fpermitted-flt-eval-methods= | |
1372 | Common Joined RejectNegative Enum(permitted_flt_eval_methods) Var(flag_permitted_flt_eval_methods) Init(PERMITTED_FLT_EVAL_METHODS_DEFAULT) | |
1373 | -fpermitted-flt-eval-methods=[c11|ts-18661] Specify which values of FLT_EVAL_METHOD are permitted. | |
1374 | ||
1375 | Enum | |
1376 | Name(permitted_flt_eval_methods) Type(enum permitted_flt_eval_methods) UnknownError(unknown specification for the set of FLT_EVAL_METHOD values to permit %qs) | |
1377 | ||
1378 | EnumValue | |
1379 | Enum(permitted_flt_eval_methods) String(c11) Value(PERMITTED_FLT_EVAL_METHODS_C11) | |
1380 | ||
1381 | EnumValue | |
1382 | Enum(permitted_flt_eval_methods) String(ts-18661-3) Value(PERMITTED_FLT_EVAL_METHODS_TS_18661) | |
1383 | ||
058de654 | 1384 | ffast-math |
bfd67b47 | 1385 | Common Optimization |
058de654 | 1386 | |
cc8547a7 | 1387 | ffat-lto-objects |
e9f67e62 | 1388 | Common Var(flag_fat_lto_objects) |
cc8547a7 AK |
1389 | Output lto objects containing both the intermediate language and binary output. |
1390 | ||
6ff3a151 | 1391 | ffinite-math-only |
5e46b0c6 | 1392 | Common Report Var(flag_finite_math_only) Optimization SetByCombined |
a7b2e184 | 1393 | Assume no NaNs or infinities are generated. |
6ff3a151 | 1394 | |
058de654 | 1395 | ffixed- |
21bf1558 | 1396 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 1397 | -ffixed-<register> Mark <register> as being unavailable to the compiler. |
058de654 | 1398 | |
de32c0cb | 1399 | ffloat-store |
c662432e | 1400 | Common Report Var(flag_float_store) Optimization |
a7b2e184 | 1401 | Don't allocate floats and doubles in extended-precision registers. |
de32c0cb NB |
1402 | |
1403 | fforce-addr | |
2d2bd949 | 1404 | Common Ignore |
3de5e93a | 1405 | Does nothing. Preserved for backward compatibility. |
de32c0cb | 1406 | |
2ca2b607 SB |
1407 | fforward-propagate |
1408 | Common Report Var(flag_forward_propagate) Optimization | |
a7b2e184 | 1409 | Perform a forward propagation pass on RTL. |
a52b023a | 1410 | |
16949072 | 1411 | ffp-contract= |
bea30e0d | 1412 | Common Joined RejectNegative Enum(fp_contract_mode) Var(flag_fp_contract_mode) Init(FP_CONTRACT_FAST) Optimization |
6a825afe | 1413 | -ffp-contract=[off|on|fast] Perform floating-point expression contraction. |
16949072 | 1414 | |
e6d4b984 JM |
1415 | Enum |
1416 | Name(fp_contract_mode) Type(enum fp_contract_mode) UnknownError(unknown floating point contraction style %qs) | |
1417 | ||
1418 | EnumValue | |
1419 | Enum(fp_contract_mode) String(off) Value(FP_CONTRACT_OFF) | |
1420 | ||
1421 | ; Not implemented, fall back to conservative FP_CONTRACT_OFF. | |
1422 | EnumValue | |
1423 | Enum(fp_contract_mode) String(on) Value(FP_CONTRACT_OFF) | |
1424 | ||
1425 | EnumValue | |
1426 | Enum(fp_contract_mode) String(fast) Value(FP_CONTRACT_FAST) | |
1427 | ||
0d2f700f JM |
1428 | ffp-int-builtin-inexact |
1429 | Common Report Var(flag_fp_int_builtin_inexact) Init(1) Optimization | |
1430 | Allow built-in functions ceil, floor, round, trunc to raise \"inexact\" exceptions. | |
1431 | ||
31b66477 KC |
1432 | ; Nonzero means don't put addresses of constant functions in registers. |
1433 | ; Used for compiling the Unix kernel, where strange substitutions are | |
1434 | ; done on the assembly output. | |
de32c0cb | 1435 | ffunction-cse |
b16650ac | 1436 | Common Report Var(flag_no_function_cse,0) Optimization |
a7b2e184 | 1437 | Allow function addresses to be held in registers. |
de32c0cb | 1438 | |
6ff3a151 | 1439 | ffunction-sections |
50431bc4 | 1440 | Common Report Var(flag_function_sections) |
a7b2e184 | 1441 | Place each function into its own section. |
6ff3a151 | 1442 | |
de32c0cb | 1443 | fgcse |
c662432e | 1444 | Common Report Var(flag_gcse) Optimization |
a7b2e184 | 1445 | Perform global common subexpression elimination. |
de32c0cb NB |
1446 | |
1447 | fgcse-lm | |
c662432e | 1448 | Common Report Var(flag_gcse_lm) Init(1) Optimization |
a7b2e184 | 1449 | Perform enhanced load motion during global common subexpression elimination. |
de32c0cb NB |
1450 | |
1451 | fgcse-sm | |
c662432e | 1452 | Common Report Var(flag_gcse_sm) Init(0) Optimization |
a7b2e184 | 1453 | Perform store motion after global common subexpression elimination. |
de32c0cb | 1454 | |
f5f2e3cd | 1455 | fgcse-las |
c662432e | 1456 | Common Report Var(flag_gcse_las) Init(0) Optimization |
f9957958 | 1457 | Perform redundant load after store elimination in global common subexpression |
a7b2e184 | 1458 | elimination. |
f9957958 MH |
1459 | |
1460 | fgcse-after-reload | |
c662432e | 1461 | Common Report Var(flag_gcse_after_reload) Optimization |
a7b2e184 MS |
1462 | Perform global common subexpression elimination after register allocation has |
1463 | finished. | |
f5f2e3cd | 1464 | |
6592d14b PMR |
1465 | Enum |
1466 | Name(dwarf_gnat_encodings) Type(int) | |
1467 | ||
1468 | EnumValue | |
1469 | Enum(dwarf_gnat_encodings) String(all) Value(DWARF_GNAT_ENCODINGS_ALL) | |
1470 | ||
1471 | EnumValue | |
1472 | Enum(dwarf_gnat_encodings) String(gdb) Value(DWARF_GNAT_ENCODINGS_GDB) | |
1473 | ||
1474 | EnumValue | |
1475 | Enum(dwarf_gnat_encodings) String(minimal) Value(DWARF_GNAT_ENCODINGS_MINIMAL) | |
1476 | ||
1477 | fgnat-encodings= | |
1478 | Common Enum(dwarf_gnat_encodings) Joined RejectNegative Report Undocumented Var(gnat_encodings) | |
1479 | -fgnat-encodings=[all|gdb|minimal] Select the balance between GNAT encodings and standard DWARF emitted in the debug information | |
1480 | ||
d0a58904 | 1481 | ; This option is not documented yet as its semantics will change. |
f8bf9252 | 1482 | fgraphite |
ff6a32a9 | 1483 | Common Report Var(flag_graphite) Optimization |
a7b2e184 | 1484 | Enable in and out of Graphite representation. |
f8bf9252 | 1485 | |
204b560f SP |
1486 | fgraphite-identity |
1487 | Common Report Var(flag_graphite_identity) Optimization | |
a7b2e184 | 1488 | Enable Graphite Identity transformation. |
204b560f | 1489 | |
372a6eb8 BS |
1490 | fhoist-adjacent-loads |
1491 | Common Report Var(flag_hoist_adjacent_loads) Optimization | |
1492 | Enable hoisting adjacent loads to encourage generating conditional move | |
a7b2e184 | 1493 | instructions. |
372a6eb8 | 1494 | |
1a218fc9 ILT |
1495 | fkeep-gc-roots-live |
1496 | Common Undocumented Report Var(flag_keep_gc_roots_live) Optimization | |
1497 | ; Always keep a pointer to a live memory block | |
1498 | ||
3cf0e270 SP |
1499 | floop-parallelize-all |
1500 | Common Report Var(flag_loop_parallelize_all) Optimization | |
a7b2e184 | 1501 | Mark all loops as parallel. |
204b560f | 1502 | |
f8bf9252 | 1503 | floop-strip-mine |
d6bb5ccf | 1504 | Common Alias(floop-nest-optimize) |
a7b2e184 | 1505 | Enable loop nest transforms. Same as -floop-nest-optimize. |
f8bf9252 SP |
1506 | |
1507 | floop-interchange | |
fbdec14e BC |
1508 | Common Report Var(flag_loop_interchange) Optimization |
1509 | Enable loop interchange on trees. | |
f8bf9252 SP |
1510 | |
1511 | floop-block | |
d6bb5ccf | 1512 | Common Alias(floop-nest-optimize) |
a7b2e184 | 1513 | Enable loop nest transforms. Same as -floop-nest-optimize. |
f8bf9252 | 1514 | |
20d3465b | 1515 | floop-unroll-and-jam |
dc236397 MM |
1516 | Common Report Var(flag_unroll_jam) Optimization |
1517 | Perform unroll-and-jam on loops. | |
a7b2e184 | 1518 | |
0a35513e AH |
1519 | fgnu-tm |
1520 | Common Report Var(flag_tm) | |
a7b2e184 | 1521 | Enable support for GNU transactional memory. |
0a35513e | 1522 | |
da34ade5 JM |
1523 | fgnu-unique |
1524 | Common Report Var(flag_gnu_unique) Init(1) | |
a7b2e184 | 1525 | Use STB_GNU_UNIQUE if supported by the assembler. |
da34ade5 | 1526 | |
98af4c9f | 1527 | floop-flatten |
093193be MK |
1528 | Common Ignore |
1529 | Does nothing. Preserved for backward compatibility. | |
98af4c9f | 1530 | |
b60cc080 | 1531 | floop-nest-optimize |
84c36240 | 1532 | Common Report Var(flag_loop_nest_optimize) Optimization |
e357a5e0 | 1533 | Enable the loop nest optimizer. |
b60cc080 | 1534 | |
6a78b724 | 1535 | fstrict-volatile-bitfields |
b16650ac | 1536 | Common Report Var(flag_strict_volatile_bitfields) Init(-1) Optimization |
a7b2e184 | 1537 | Force bitfield accesses to match their type width. |
6a78b724 | 1538 | |
f663d9ad KT |
1539 | fstore-merging |
1540 | Common Report Var(flag_store_merging) Optimization | |
1541 | Merge adjacent stores. | |
1542 | ||
6ff3a151 | 1543 | fguess-branch-probability |
c662432e | 1544 | Common Report Var(flag_guess_branch_prob) Optimization |
a7b2e184 | 1545 | Enable guessing of branch probabilities. |
6ff3a151 | 1546 | |
31b66477 KC |
1547 | ; Nonzero means ignore `#ident' directives. 0 means handle them. |
1548 | ; Generate position-independent code for executables if possible | |
1549 | ; On SVR4 targets, it also controls whether or not to emit a | |
1550 | ; string identifying the compiler. | |
6ff3a151 | 1551 | fident |
50431bc4 | 1552 | Common Report Var(flag_no_ident,0) |
a7b2e184 | 1553 | Process #ident directives. |
6ff3a151 | 1554 | |
de32c0cb | 1555 | fif-conversion |
c662432e | 1556 | Common Report Var(flag_if_conversion) Optimization |
a7b2e184 | 1557 | Perform conversion of conditional jumps to branchless equivalents. |
de32c0cb NB |
1558 | |
1559 | fif-conversion2 | |
c662432e | 1560 | Common Report Var(flag_if_conversion2) Optimization |
a7b2e184 | 1561 | Perform conversion of conditional jumps to conditional execution. |
de32c0cb | 1562 | |
87e2a8fd | 1563 | fstack-reuse= |
082908e3 | 1564 | Common Joined RejectNegative Enum(stack_reuse_level) Var(flag_stack_reuse) Init(SR_ALL) Optimization |
6a825afe | 1565 | -fstack-reuse=[all|named_vars|none] Set stack reuse level for local variables. |
87e2a8fd XDL |
1566 | |
1567 | Enum | |
1568 | Name(stack_reuse_level) Type(enum stack_reuse_level) UnknownError(unknown Stack Reuse Level %qs) | |
1569 | ||
1570 | EnumValue | |
1571 | Enum(stack_reuse_level) String(all) Value(SR_ALL) | |
1572 | ||
1573 | EnumValue | |
1574 | Enum(stack_reuse_level) String(named_vars) Value(SR_NAMED_VARS) | |
1575 | ||
1576 | EnumValue | |
1577 | Enum(stack_reuse_level) String(none) Value(SR_NONE) | |
1578 | ||
384a5197 SP |
1579 | ftree-loop-if-convert |
1580 | Common Report Var(flag_tree_loop_if_convert) Init(-1) Optimization | |
a7b2e184 | 1581 | Convert conditional jumps in innermost loops to branchless equivalents. |
384a5197 | 1582 | |
bd544141 | 1583 | ftree-loop-if-convert-stores |
bef69eb5 RB |
1584 | Common Ignore |
1585 | Does nothing. Preserved for backward compatibility. | |
bd544141 | 1586 | |
31b66477 KC |
1587 | ; -finhibit-size-directive inhibits output of .size for ELF. |
1588 | ; This is used only for compiling crtstuff.c, | |
1589 | ; and it may be extended to other effects | |
1590 | ; needed for crtstuff.c on other systems. | |
6ff3a151 | 1591 | finhibit-size-directive |
50431bc4 | 1592 | Common Report Var(flag_inhibit_size_directive) |
a7b2e184 | 1593 | Do not generate .size directives. |
6ff3a151 | 1594 | |
3e293154 | 1595 | findirect-inlining |
2bf86c84 | 1596 | Common Report Var(flag_indirect_inlining) Optimization |
a7b2e184 | 1597 | Perform indirect inlining. |
3e293154 | 1598 | |
99ea07f8 RG |
1599 | ; General flag to enable inlining. Specifying -fno-inline will disable |
1600 | ; all inlining apart from always-inline functions. | |
de32c0cb | 1601 | finline |
0f042bc5 | 1602 | Common Report Var(flag_no_inline,0) Init(0) Optimization |
a7b2e184 | 1603 | Enable inlining of function declared \"inline\", disabling disables all inlining. |
de32c0cb | 1604 | |
4d4b8cb9 JH |
1605 | finline-small-functions |
1606 | Common Report Var(flag_inline_small_functions) Optimization | |
a7b2e184 | 1607 | Integrate functions into their callers when code size is known not to grow. |
4d4b8cb9 | 1608 | |
de32c0cb | 1609 | finline-functions |
c662432e | 1610 | Common Report Var(flag_inline_functions) Optimization |
a7b2e184 | 1611 | Integrate functions not declared \"inline\" into their callers when profitable. |
de32c0cb | 1612 | |
355866de | 1613 | finline-functions-called-once |
fb37c1de | 1614 | Common Report Var(flag_inline_functions_called_once) Optimization |
a7b2e184 | 1615 | Integrate functions only required by their single caller. |
d63db217 | 1616 | |
d302c9d6 | 1617 | finline-limit- |
5de8299c | 1618 | Common RejectNegative Joined Alias(finline-limit=) |
d302c9d6 NB |
1619 | |
1620 | finline-limit= | |
1621 | Common RejectNegative Joined UInteger | |
a7b2e184 | 1622 | -finline-limit=<number> Limit the size of inlined functions to <number>. |
d302c9d6 | 1623 | |
86951993 AM |
1624 | finline-atomics |
1625 | Common Report Var(flag_inline_atomics) Init(1) Optimization | |
1626 | Inline __atomic operations when a lock free instruction sequence is available. | |
1627 | ||
5c5f0b65 IT |
1628 | fcf-protection |
1629 | Common RejectNegative Alias(fcf-protection=,full) | |
1630 | ||
1631 | fcf-protection= | |
1632 | Common Report Joined RejectNegative Enum(cf_protection_level) Var(flag_cf_protection) Init(CF_NONE) | |
1633 | -fcf-protection=[full|branch|return|none] Instrument functions with checks to verify jump/call/return control-flow transfer | |
1634 | instructions have valid targets. | |
1635 | ||
1636 | Enum | |
cefc0906 | 1637 | Name(cf_protection_level) Type(enum cf_protection_level) UnknownError(unknown Control-Flow Protection Level %qs) |
5c5f0b65 IT |
1638 | |
1639 | EnumValue | |
1640 | Enum(cf_protection_level) String(full) Value(CF_FULL) | |
1641 | ||
1642 | EnumValue | |
1643 | Enum(cf_protection_level) String(branch) Value(CF_BRANCH) | |
1644 | ||
1645 | EnumValue | |
1646 | Enum(cf_protection_level) String(return) Value(CF_RETURN) | |
1647 | ||
1648 | EnumValue | |
1649 | Enum(cf_protection_level) String(none) Value(CF_NONE) | |
1650 | ||
6ff3a151 | 1651 | finstrument-functions |
50431bc4 | 1652 | Common Report Var(flag_instrument_function_entry_exit) |
a7b2e184 | 1653 | Instrument function entry and exit with profiling calls. |
6ff3a151 | 1654 | |
8d5a7d1f ILT |
1655 | finstrument-functions-exclude-function-list= |
1656 | Common RejectNegative Joined | |
a7b2e184 | 1657 | -finstrument-functions-exclude-function-list=name,... Do not instrument listed functions. |
8d5a7d1f ILT |
1658 | |
1659 | finstrument-functions-exclude-file-list= | |
1660 | Common RejectNegative Joined | |
a7b2e184 | 1661 | -finstrument-functions-exclude-file-list=filename,... Do not instrument functions listed in files. |
8d5a7d1f | 1662 | |
d6e14e8f | 1663 | fipa-cp |
c662432e | 1664 | Common Report Var(flag_ipa_cp) Optimization |
a7b2e184 | 1665 | Perform interprocedural constant propagation. |
d6e14e8f | 1666 | |
5e45130d JH |
1667 | fipa-cp-clone |
1668 | Common Report Var(flag_ipa_cp_clone) Optimization | |
a7b2e184 | 1669 | Perform cloning to make Interprocedural constant propagation stronger. |
5e45130d | 1670 | |
3c99176a | 1671 | fipa-cp-alignment |
78117646 MJ |
1672 | Common Ignore |
1673 | Does nothing. Preserved for backward compatibility. | |
3c99176a | 1674 | |
209ca542 PK |
1675 | fipa-bit-cp |
1676 | Common Report Var(flag_ipa_bit_cp) Optimization | |
1677 | Perform interprocedural bitwise constant propagation. | |
1678 | ||
e65bb9be JH |
1679 | fipa-profile |
1680 | Common Report Var(flag_ipa_profile) Init(0) Optimization | |
a7b2e184 | 1681 | Perform interprocedural profile propagation. |
ea900239 | 1682 | |
4cf4d6a3 | 1683 | fipa-pta |
c662432e | 1684 | Common Report Var(flag_ipa_pta) Init(0) Optimization |
a7b2e184 | 1685 | Perform interprocedural points-to analysis. |
4cf4d6a3 | 1686 | |
e65bb9be JH |
1687 | fipa-pure-const |
1688 | Common Report Var(flag_ipa_pure_const) Init(0) Optimization | |
a7b2e184 | 1689 | Discover pure and const functions. |
e65bb9be | 1690 | |
b84d4347 ML |
1691 | fipa-icf |
1692 | Common Report Var(flag_ipa_icf) Optimization | |
a7b2e184 | 1693 | Perform Identical Code Folding for functions and read-only variables. |
b84d4347 ML |
1694 | |
1695 | fipa-icf-functions | |
1696 | Common Report Var(flag_ipa_icf_functions) Optimization | |
a7b2e184 | 1697 | Perform Identical Code Folding for functions. |
b84d4347 ML |
1698 | |
1699 | fipa-icf-variables | |
b93ee1bb | 1700 | Common Report Var(flag_ipa_icf_variables) Optimization |
a7b2e184 | 1701 | Perform Identical Code Folding for variables. |
b84d4347 | 1702 | |
ea900239 | 1703 | fipa-reference |
c662432e | 1704 | Common Report Var(flag_ipa_reference) Init(0) Optimization |
a7b2e184 | 1705 | Discover readonly and non addressable static variables. |
ea900239 | 1706 | |
43d861a5 | 1707 | fipa-matrix-reorg |
04f92ff4 RG |
1708 | Common Ignore |
1709 | Does nothing. Preserved for backward compatibility. | |
43d861a5 | 1710 | |
e1dc98b2 | 1711 | fipa-struct-reorg |
b8beb4d1 RG |
1712 | Common Ignore |
1713 | Does nothing. Preserved for backward compatibility. | |
e1dc98b2 | 1714 | |
8bc5448f KV |
1715 | fipa-vrp |
1716 | Common Report Var(flag_ipa_vrp) Optimization | |
1717 | Perform IPA Value Range Propagation. | |
1718 | ||
058e97ec | 1719 | fira-algorithm= |
b16650ac | 1720 | Common Joined RejectNegative Enum(ira_algorithm) Var(flag_ira_algorithm) Init(IRA_ALGORITHM_CB) Optimization |
6a825afe | 1721 | -fira-algorithm=[CB|priority] Set the used IRA algorithm. |
7db7ed3c | 1722 | |
e6d4b984 JM |
1723 | Enum |
1724 | Name(ira_algorithm) Type(enum ira_algorithm) UnknownError(unknown IRA algorithm %qs) | |
1725 | ||
1726 | EnumValue | |
1727 | Enum(ira_algorithm) String(CB) Value(IRA_ALGORITHM_CB) | |
1728 | ||
1729 | EnumValue | |
1730 | Enum(ira_algorithm) String(priority) Value(IRA_ALGORITHM_PRIORITY) | |
1731 | ||
7db7ed3c | 1732 | fira-region= |
b16650ac | 1733 | Common Joined RejectNegative Enum(ira_region) Var(flag_ira_region) Init(IRA_REGION_AUTODETECT) Optimization |
6a825afe | 1734 | -fira-region=[one|all|mixed] Set regions for IRA. |
058e97ec | 1735 | |
e6d4b984 JM |
1736 | Enum |
1737 | Name(ira_region) Type(enum ira_region) UnknownError(unknown IRA region %qs) | |
1738 | ||
1739 | EnumValue | |
1740 | Enum(ira_region) String(one) Value(IRA_REGION_ONE) | |
1741 | ||
1742 | EnumValue | |
1743 | Enum(ira_region) String(all) Value(IRA_REGION_ALL) | |
1744 | ||
1745 | EnumValue | |
1746 | Enum(ira_region) String(mixed) Value(IRA_REGION_MIXED) | |
1747 | ||
b11f0116 BC |
1748 | fira-hoist-pressure |
1749 | Common Report Var(flag_ira_hoist_pressure) Init(1) Optimization | |
1750 | Use IRA based register pressure calculation | |
1751 | in RTL hoist optimizations. | |
1752 | ||
1833192f | 1753 | fira-loop-pressure |
f3d83ffe | 1754 | Common Report Var(flag_ira_loop_pressure) Optimization |
1833192f VM |
1755 | Use IRA based register pressure calculation |
1756 | in RTL loop optimizations. | |
1757 | ||
058e97ec | 1758 | fira-share-save-slots |
b16650ac | 1759 | Common Report Var(flag_ira_share_save_slots) Init(1) Optimization |
058e97ec VM |
1760 | Share slots for saving different hard registers. |
1761 | ||
1762 | fira-share-spill-slots | |
b16650ac | 1763 | Common Report Var(flag_ira_share_spill_slots) Init(1) Optimization |
058e97ec VM |
1764 | Share stack slots for spilled pseudo-registers. |
1765 | ||
1766 | fira-verbose= | |
5498f011 | 1767 | Common RejectNegative Joined UInteger Var(flag_ira_verbose) Init(5) |
f94e1d66 | 1768 | -fira-verbose=<number> Control IRA's level of diagnostic messages. |
058e97ec | 1769 | |
8b11a64c | 1770 | fivopts |
c662432e | 1771 | Common Report Var(flag_ivopts) Init(1) Optimization |
a7b2e184 | 1772 | Optimize induction variables on trees. |
8b11a64c | 1773 | |
82c0180d | 1774 | fjump-tables |
c662432e | 1775 | Common Var(flag_jump_tables) Init(1) Optimization |
a7b2e184 | 1776 | Use jump tables for sufficiently large switch statements. |
82c0180d | 1777 | |
de32c0cb | 1778 | fkeep-inline-functions |
50431bc4 | 1779 | Common Report Var(flag_keep_inline_functions) |
a7b2e184 | 1780 | Generate code for functions even if they are fully inlined. |
de32c0cb | 1781 | |
787da5fd JV |
1782 | fkeep-static-functions |
1783 | Common Report Var(flag_keep_static_functions) | |
a7b2e184 | 1784 | Generate code for static functions even if they are never called. |
787da5fd | 1785 | |
de32c0cb | 1786 | fkeep-static-consts |
50431bc4 | 1787 | Common Report Var(flag_keep_static_consts) Init(1) |
a7b2e184 | 1788 | Emit static const variables even if they are not used. |
de32c0cb | 1789 | |
6ff3a151 | 1790 | fleading-underscore |
50431bc4 | 1791 | Common Report Var(flag_leading_underscore) Init(-1) |
a7b2e184 | 1792 | Give external symbols a leading underscore. |
6ff3a151 | 1793 | |
efa1cdf0 | 1794 | floop-optimize |
2d2bd949 | 1795 | Common Ignore |
c0220ea4 | 1796 | Does nothing. Preserved for backward compatibility. |
efa1cdf0 | 1797 | |
d9cf932c VM |
1798 | flra-remat |
1799 | Common Report Var(flag_lra_remat) Optimization | |
a7b2e184 | 1800 | Do CFG-sensitive rematerialization in LRA. |
d9cf932c | 1801 | |
d7f09764 | 1802 | flto |
014d92e1 | 1803 | Common |
d7f09764 DN |
1804 | Enable link-time optimization. |
1805 | ||
014d92e1 JH |
1806 | flto= |
1807 | Common RejectNegative Joined Var(flag_lto) | |
1808 | Link-time optimization with number of parallel jobs or jobserver. | |
1809 | ||
783dab6b RB |
1810 | Enum |
1811 | Name(lto_partition_model) Type(enum lto_partition_model) UnknownError(unknown LTO partitioning model %qs) | |
852e4bd2 | 1812 | |
783dab6b RB |
1813 | EnumValue |
1814 | Enum(lto_partition_model) String(none) Value(LTO_PARTITION_NONE) | |
852e4bd2 | 1815 | |
783dab6b RB |
1816 | EnumValue |
1817 | Enum(lto_partition_model) String(one) Value(LTO_PARTITION_ONE) | |
1818 | ||
1819 | EnumValue | |
1820 | Enum(lto_partition_model) String(balanced) Value(LTO_PARTITION_BALANCED) | |
1821 | ||
1822 | EnumValue | |
1823 | Enum(lto_partition_model) String(1to1) Value(LTO_PARTITION_1TO1) | |
1824 | ||
1825 | EnumValue | |
1826 | Enum(lto_partition_model) String(max) Value(LTO_PARTITION_MAX) | |
c3c445e1 | 1827 | |
783dab6b RB |
1828 | flto-partition= |
1829 | Common Joined RejectNegative Enum(lto_partition_model) Var(flag_lto_partition) Init(LTO_PARTITION_BALANCED) | |
a7b2e184 | 1830 | Specify the algorithm to partition symbols and vars at linktime. |
014d92e1 | 1831 | |
d7f09764 DN |
1832 | ; The initial value of -1 comes from Z_DEFAULT_COMPRESSION in zlib.h. |
1833 | flto-compression-level= | |
63010089 | 1834 | Common Joined RejectNegative UInteger Var(flag_lto_compression_level) Init(-1) IntegerRange(0, 9) |
a7b2e184 | 1835 | -flto-compression-level=<number> Use zlib compression level <number> for IL. |
d7f09764 | 1836 | |
1ee85ee1 JH |
1837 | flto-odr-type-merging |
1838 | Common Report Var(flag_lto_odr_type_mering) Init(1) | |
a7b2e184 | 1839 | Merge C++ types using One Definition Rule. |
1ee85ee1 | 1840 | |
d7f09764 | 1841 | flto-report |
1d67dde8 | 1842 | Common Report Var(flag_lto_report) Init(0) |
a7b2e184 | 1843 | Report various link-time optimization statistics. |
d7f09764 | 1844 | |
057f8f20 AK |
1845 | flto-report-wpa |
1846 | Common Report Var(flag_lto_report_wpa) Init(0) | |
a7b2e184 | 1847 | Report various link-time optimization statistics for WPA only. |
057f8f20 | 1848 | |
6ff3a151 | 1849 | fmath-errno |
5e46b0c6 | 1850 | Common Report Var(flag_errno_math) Init(1) Optimization SetByCombined |
a7b2e184 | 1851 | Set errno after built-in math functions. |
6ff3a151 | 1852 | |
3a789837 NF |
1853 | fmax-errors= |
1854 | Common Joined RejectNegative UInteger Var(flag_max_errors) | |
a7b2e184 | 1855 | -fmax-errors=<number> Maximum number of errors to report. |
3a789837 | 1856 | |
6ff3a151 | 1857 | fmem-report |
50431bc4 | 1858 | Common Report Var(mem_report) |
a7b2e184 | 1859 | Report on permanent memory allocation. |
6ff3a151 | 1860 | |
b3e44629 AK |
1861 | fmem-report-wpa |
1862 | Common Report Var(mem_report_wpa) | |
a7b2e184 | 1863 | Report on permanent memory allocation in WPA only. |
b3e44629 | 1864 | |
31b66477 KC |
1865 | ; This will attempt to merge constant section constants, if 1 only |
1866 | ; string constants and constants from constant pool, if 2 also constant | |
1867 | ; variables. | |
6ff3a151 | 1868 | fmerge-all-constants |
0a7246ee | 1869 | Common Report Var(flag_merge_constants,2) Init(1) |
a7b2e184 | 1870 | Attempt to merge identical constants and constant variables. |
6ff3a151 NB |
1871 | |
1872 | fmerge-constants | |
0a7246ee | 1873 | Common Report Var(flag_merge_constants,1) |
a7b2e184 | 1874 | Attempt to merge identical constants across compilation units. |
6ff3a151 | 1875 | |
28a08168 ILT |
1876 | fmerge-debug-strings |
1877 | Common Report Var(flag_merge_debug_strings) Init(1) | |
a7b2e184 | 1878 | Attempt to merge identical debug strings across compilation units. |
28a08168 | 1879 | |
de32c0cb NB |
1880 | fmessage-length= |
1881 | Common RejectNegative Joined UInteger | |
a7b2e184 | 1882 | -fmessage-length=<number> Limit diagnostics to <number> characters per line. 0 suppresses line-wrapping. |
de32c0cb | 1883 | |
e5626198 | 1884 | fmodulo-sched |
c662432e | 1885 | Common Report Var(flag_modulo_sched) Optimization |
a7b2e184 | 1886 | Perform SMS based modulo scheduling before the first scheduling pass. |
e5626198 | 1887 | |
517d76fa | 1888 | fmodulo-sched-allow-regmoves |
b16650ac | 1889 | Common Report Var(flag_modulo_sched_allow_regmoves) Optimization |
a7b2e184 | 1890 | Perform SMS based modulo scheduling with register moves allowed. |
517d76fa | 1891 | |
5e962776 | 1892 | fmove-loop-invariants |
14379e66 | 1893 | Common Report Var(flag_move_loop_invariants) Optimization |
a7b2e184 | 1894 | Move loop invariant computations out of loops. |
5e962776 | 1895 | |
6fb5fa3c | 1896 | fdce |
6ae4be32 | 1897 | Common Var(flag_dce) Init(1) Optimization |
a7b2e184 | 1898 | Use the RTL dead code elimination pass. |
6fb5fa3c DB |
1899 | |
1900 | fdse | |
6ae4be32 | 1901 | Common Var(flag_dse) Init(1) Optimization |
a7b2e184 | 1902 | Use the RTL dead store elimination pass. |
6fb5fa3c | 1903 | |
d72372e4 | 1904 | freschedule-modulo-scheduled-loops |
c662432e | 1905 | Common Report Var(flag_resched_modulo_sched) Optimization |
a7b2e184 | 1906 | Enable/Disable the traditional scheduling in loops that already passed modulo scheduling. |
d72372e4 | 1907 | |
6ff3a151 | 1908 | fnon-call-exceptions |
c662432e | 1909 | Common Report Var(flag_non_call_exceptions) Optimization |
a7b2e184 | 1910 | Support synchronous non-call exceptions. |
6ff3a151 | 1911 | |
c713ddc0 BS |
1912 | foffload= |
1913 | Common Driver Joined MissingArgError(options or targets missing after %qs) | |
a7b2e184 | 1914 | -foffload=<targets>=<options> Specify offloading targets and options for them. |
c713ddc0 BS |
1915 | |
1916 | foffload-abi= | |
1917 | Common Joined RejectNegative Enum(offload_abi) Var(flag_offload_abi) Init(OFFLOAD_ABI_UNSET) | |
a7b2e184 | 1918 | -foffload-abi=[lp64|ilp32] Set the ABI to use in an offload compiler. |
c713ddc0 BS |
1919 | |
1920 | Enum | |
1921 | Name(offload_abi) Type(enum offload_abi) UnknownError(unknown offload ABI %qs) | |
1922 | ||
1923 | EnumValue | |
1924 | Enum(offload_abi) String(ilp32) Value(OFFLOAD_ABI_ILP32) | |
1925 | ||
1926 | EnumValue | |
1927 | Enum(offload_abi) String(lp64) Value(OFFLOAD_ABI_LP64) | |
1928 | ||
de32c0cb | 1929 | fomit-frame-pointer |
c662432e | 1930 | Common Report Var(flag_omit_frame_pointer) Optimization |
a7b2e184 | 1931 | When possible do not generate stack frames. |
de32c0cb | 1932 | |
78c60e3d SS |
1933 | fopt-info |
1934 | Common Report Var(flag_opt_info) Optimization | |
a7b2e184 | 1935 | Enable all optimization info dumps on stderr. |
78c60e3d SS |
1936 | |
1937 | fopt-info- | |
1938 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
a7b2e184 | 1939 | -fopt-info[-<type>=filename] Dump compiler optimization details. |
78c60e3d | 1940 | |
4a4412b9 DM |
1941 | fsave-optimization-record |
1942 | Common Report Var(flag_save_optimization_record) Optimization | |
1943 | Write a SRCFILE.opt-record.json file detailing what optimizations were performed. | |
1944 | ||
6ff3a151 | 1945 | foptimize-register-move |
3b6d1699 VM |
1946 | Common Ignore |
1947 | Does nothing. Preserved for backward compatibility. | |
6ff3a151 | 1948 | |
de32c0cb | 1949 | foptimize-sibling-calls |
c662432e | 1950 | Common Report Var(flag_optimize_sibling_calls) Optimization |
a7b2e184 | 1951 | Optimize sibling and tail recursive calls. |
de32c0cb | 1952 | |
3e485f62 | 1953 | fpartial-inlining |
b16650ac | 1954 | Common Report Var(flag_partial_inlining) Optimization |
a7b2e184 | 1955 | Perform partial inlining. |
3e485f62 | 1956 | |
a5573239 JH |
1957 | fpre-ipa-mem-report |
1958 | Common Report Var(pre_ipa_mem_report) | |
a7b2e184 | 1959 | Report on memory allocation before interprocedural optimization. |
a5573239 JH |
1960 | |
1961 | fpost-ipa-mem-report | |
1962 | Common Report Var(post_ipa_mem_report) | |
a7b2e184 | 1963 | Report on memory allocation before interprocedural optimization. |
a5573239 | 1964 | |
6ff3a151 | 1965 | fpack-struct |
c662432e | 1966 | Common Report Var(flag_pack_struct) Optimization |
a7b2e184 | 1967 | Pack structure members together without holes. |
6ff3a151 | 1968 | |
467cecf3 | 1969 | fpack-struct= |
c662432e | 1970 | Common RejectNegative Joined UInteger Optimization |
a7b2e184 | 1971 | -fpack-struct=<number> Set initial maximum structure member alignment. |
467cecf3 | 1972 | |
de32c0cb | 1973 | fpcc-struct-return |
5498f011 | 1974 | Common Report Var(flag_pcc_struct_return,1) Init(DEFAULT_PCC_STRUCT_RETURN) |
a7b2e184 | 1975 | Return small aggregates in memory, not registers. |
de32c0cb NB |
1976 | |
1977 | fpeel-loops | |
c662432e | 1978 | Common Report Var(flag_peel_loops) Optimization |
a7b2e184 | 1979 | Perform loop peeling. |
de32c0cb NB |
1980 | |
1981 | fpeephole | |
c662432e | 1982 | Common Report Var(flag_no_peephole,0) Optimization |
a7b2e184 | 1983 | Enable machine specific peephole optimizations. |
de32c0cb | 1984 | |
6ff3a151 | 1985 | fpeephole2 |
c662432e | 1986 | Common Report Var(flag_peephole2) Optimization |
a7b2e184 | 1987 | Enable an RTL peephole pass before sched2. |
6ff3a151 | 1988 | |
31b66477 | 1989 | fPIC |
b57e6e18 | 1990 | Common Report Var(flag_pic,2) Negative(fPIE) Init(-1) |
a7b2e184 | 1991 | Generate position-independent code if possible (large mode). |
31b66477 KC |
1992 | |
1993 | fPIE | |
428b3812 | 1994 | Common Report Var(flag_pie,2) Negative(fpic) Init(-1) |
a7b2e184 | 1995 | Generate position-independent code for executables if possible (large mode). |
31b66477 | 1996 | |
6ff3a151 | 1997 | fpic |
b57e6e18 | 1998 | Common Report Var(flag_pic,1) Negative(fpie) Init(-1) |
a7b2e184 | 1999 | Generate position-independent code if possible (small mode). |
6ff3a151 NB |
2000 | |
2001 | fpie | |
428b3812 | 2002 | Common Report Var(flag_pie,1) Negative(fPIC) Init(-1) |
a7b2e184 | 2003 | Generate position-independent code for executables if possible (small mode). |
6ff3a151 | 2004 | |
b91fd3c7 AM |
2005 | fplt |
2006 | Common Report Var(flag_plt) Init(1) Optimization | |
a7b2e184 | 2007 | Use PLT for PIC calls (-fno-plt: load the address from GOT at call site). |
b91fd3c7 | 2008 | |
68a607d8 | 2009 | fplugin= |
21bf1558 | 2010 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 2011 | Specify a plugin to load. |
68a607d8 DN |
2012 | |
2013 | fplugin-arg- | |
21bf1558 | 2014 | Common Joined RejectNegative Var(common_deferred_options) Defer |
a7b2e184 | 2015 | -fplugin-arg-<name>-<key>[=<value>] Specify argument <key>=<value> for plugin <name>. |
68a607d8 | 2016 | |
bbc8a8dc | 2017 | fpredictive-commoning |
6ae4be32 | 2018 | Common Report Var(flag_predictive_commoning) Optimization |
bbc8a8dc ZD |
2019 | Run predictive commoning optimization. |
2020 | ||
de32c0cb | 2021 | fprefetch-loop-arrays |
1fbb509a | 2022 | Common Report Var(flag_prefetch_loop_arrays) Init(-1) Optimization |
a7b2e184 | 2023 | Generate prefetch instructions, if available, for arrays in loops. |
de32c0cb | 2024 | |
6ff3a151 | 2025 | fprofile |
50431bc4 | 2026 | Common Report Var(profile_flag) |
a7b2e184 | 2027 | Enable basic program profiling code. |
6ff3a151 | 2028 | |
676519f7 BE |
2029 | fprofile-abs-path |
2030 | Common Report Var(profile_abs_path_flag) | |
2031 | Generate absolute source path names for gcov. | |
2032 | ||
6ff3a151 | 2033 | fprofile-arcs |
50431bc4 | 2034 | Common Report Var(profile_arc_flag) |
a7b2e184 | 2035 | Insert arc-based program profiling code. |
6ff3a151 | 2036 | |
2f908293 | 2037 | fprofile-dir= |
0576d21f | 2038 | Common Joined RejectNegative Var(profile_data_prefix) |
2f908293 SP |
2039 | Set the top-level directory for storing the profile data. |
2040 | The default is 'pwd'. | |
2041 | ||
52c76998 PY |
2042 | fprofile-correction |
2043 | Common Report Var(flag_profile_correction) | |
a7b2e184 | 2044 | Enable correction of flow inconsistent profile data input. |
52c76998 | 2045 | |
22063dbc ML |
2046 | fprofile-update= |
2047 | Common Joined RejectNegative Enum(profile_update) Var(flag_profile_update) Init(PROFILE_UPDATE_SINGLE) | |
4d209853 | 2048 | -fprofile-update=[single|atomic|prefer-atomic] Set the profile update method. |
22063dbc ML |
2049 | |
2050 | Enum | |
2051 | Name(profile_update) Type(enum profile_update) UnknownError(unknown profile update method %qs) | |
2052 | ||
2053 | EnumValue | |
2054 | Enum(profile_update) String(single) Value(PROFILE_UPDATE_SINGLE) | |
2055 | ||
2056 | EnumValue | |
2057 | Enum(profile_update) String(atomic) Value(PROFILE_UPDATE_ATOMIC) | |
2058 | ||
4d209853 ML |
2059 | EnumValue |
2060 | Enum(profile_update) String(prefer-atomic) Value(PROFILE_UPDATE_PREFER_ATOMIC) | |
2061 | ||
a8a5f53a JH |
2062 | fprofile-generate |
2063 | Common | |
a7b2e184 | 2064 | Enable common options for generating profile info for profile feedback directed optimizations. |
a8a5f53a | 2065 | |
2f908293 SP |
2066 | fprofile-generate= |
2067 | Common Joined RejectNegative | |
a7b2e184 | 2068 | Enable common options for generating profile info for profile feedback directed optimizations, and set -fprofile-dir=. |
2f908293 | 2069 | |
a8a5f53a | 2070 | fprofile-use |
2f908293 | 2071 | Common Var(flag_profile_use) |
a7b2e184 | 2072 | Enable common options for performing profile feedback directed optimizations. |
a8a5f53a | 2073 | |
2f908293 SP |
2074 | fprofile-use= |
2075 | Common Joined RejectNegative | |
a7b2e184 | 2076 | Enable common options for performing profile feedback directed optimizations, and set -fprofile-dir=. |
2f908293 | 2077 | |
fca9dc00 | 2078 | fprofile-values |
50431bc4 | 2079 | Common Report Var(flag_profile_values) |
a7b2e184 | 2080 | Insert code to profile values of expressions. |
fca9dc00 | 2081 | |
37e5402b JH |
2082 | fprofile-report |
2083 | Common Report Var(profile_report) | |
a7b2e184 | 2084 | Report on consistency of profile. |
37e5402b | 2085 | |
9cec31f4 ML |
2086 | fprofile-reorder-functions |
2087 | Common Report Var(flag_profile_reorder_functions) | |
a7b2e184 | 2088 | Enable function reordering that improves code placement. |
9cec31f4 | 2089 | |
417ca011 TD |
2090 | fpatchable-function-entry= |
2091 | Common Joined Optimization | |
2092 | Insert NOP instructions at each function entry. | |
2093 | ||
de32c0cb | 2094 | frandom-seed |
299404a1 | 2095 | Common Var(common_deferred_options) Defer |
de32c0cb NB |
2096 | |
2097 | frandom-seed= | |
299404a1 | 2098 | Common Joined RejectNegative Var(common_deferred_options) Defer |
4bfede85 | 2099 | -frandom-seed=<string> Make compile reproducible using <string>. |
de32c0cb | 2100 | |
e0d9d0dd NC |
2101 | ; This switch causes the command line that was used to create an |
2102 | ; object file to be recorded into the object file. The exact format | |
2103 | ; of this recording is target and binary file format dependent. | |
2104 | ; It is related to the -fverbose-asm switch, but that switch only | |
2105 | ; records information in the assembler output file as comments, so | |
2106 | ; they never reach the object file. | |
2107 | frecord-gcc-switches | |
2108 | Common Report Var(flag_record_gcc_switches) | |
2109 | Record gcc command line switches in the object file. | |
2110 | ||
de32c0cb | 2111 | freg-struct-return |
f0036cca | 2112 | Common Report Var(flag_pcc_struct_return,0) Optimization |
a7b2e184 | 2113 | Return small aggregates in registers. |
de32c0cb | 2114 | |
6ff3a151 | 2115 | fregmove |
3b6d1699 VM |
2116 | Common Ignore |
2117 | Does nothing. Preserved for backward compatibility. | |
6ff3a151 | 2118 | |
f522930c | 2119 | flifetime-dse |
a021961c | 2120 | Common Report Var(flag_lifetime_dse,2) Init(2) Optimization |
f522930c JM |
2121 | Tell DSE that the storage for a C++ object is dead when the constructor |
2122 | starts and when the destructor finishes. | |
2123 | ||
a021961c | 2124 | flifetime-dse= |
63010089 | 2125 | Common Joined RejectNegative UInteger Var(flag_lifetime_dse) Optimization IntegerRange(0, 2) |
a021961c | 2126 | |
f20f2613 VM |
2127 | flive-range-shrinkage |
2128 | Common Report Var(flag_live_range_shrinkage) Init(0) Optimization | |
a7b2e184 | 2129 | Relief of register pressure through live range shrinkage. |
f20f2613 | 2130 | |
6ff3a151 | 2131 | frename-registers |
c662432e | 2132 | Common Report Var(flag_rename_registers) Init(2) Optimization |
a7b2e184 | 2133 | Perform a register renaming optimization pass. |
6ff3a151 | 2134 | |
b16abbcb BC |
2135 | fschedule-fusion |
2136 | Common Report Var(flag_schedule_fusion) Init(2) Optimization | |
a7b2e184 | 2137 | Perform a target dependent instruction fusion optimization pass. |
b16abbcb | 2138 | |
6ff3a151 | 2139 | freorder-blocks |
c662432e | 2140 | Common Report Var(flag_reorder_blocks) Optimization |
a7b2e184 | 2141 | Reorder basic blocks to improve code placement. |
6ff3a151 | 2142 | |
59faab7c SB |
2143 | freorder-blocks-algorithm= |
2144 | Common Joined RejectNegative Enum(reorder_blocks_algorithm) Var(flag_reorder_blocks_algorithm) Init(REORDER_BLOCKS_ALGORITHM_SIMPLE) Optimization | |
6a825afe | 2145 | -freorder-blocks-algorithm=[simple|stc] Set the used basic block reordering algorithm. |
59faab7c SB |
2146 | |
2147 | Enum | |
2148 | Name(reorder_blocks_algorithm) Type(enum reorder_blocks_algorithm) UnknownError(unknown basic block reordering algorithm %qs) | |
2149 | ||
2150 | EnumValue | |
2151 | Enum(reorder_blocks_algorithm) String(simple) Value(REORDER_BLOCKS_ALGORITHM_SIMPLE) | |
2152 | ||
2153 | EnumValue | |
2154 | Enum(reorder_blocks_algorithm) String(stc) Value(REORDER_BLOCKS_ALGORITHM_STC) | |
2155 | ||
750054a2 | 2156 | freorder-blocks-and-partition |
c662432e | 2157 | Common Report Var(flag_reorder_blocks_and_partition) Optimization |
a7b2e184 | 2158 | Reorder basic blocks and partition into hot and cold sections. |
750054a2 | 2159 | |
6ff3a151 | 2160 | freorder-functions |
c662432e | 2161 | Common Report Var(flag_reorder_functions) Optimization |
a7b2e184 | 2162 | Reorder functions to improve code placement. |
6ff3a151 | 2163 | |
de32c0cb | 2164 | frerun-cse-after-loop |
3020190e | 2165 | Common Report Var(flag_rerun_cse_after_loop) Optimization |
a7b2e184 | 2166 | Add a common subexpression elimination pass after loop optimizations. |
de32c0cb | 2167 | |
efa1cdf0 | 2168 | frerun-loop-opt |
2d2bd949 | 2169 | Common Ignore |
c0220ea4 | 2170 | Does nothing. Preserved for backward compatibility. |
efa1cdf0 | 2171 | |
039c3d42 | 2172 | frounding-math |
5e46b0c6 | 2173 | Common Report Var(flag_rounding_math) Optimization SetByCombined |
a7b2e184 | 2174 | Disable optimizations that assume default FP rounding behavior. |
039c3d42 | 2175 | |
6ff3a151 | 2176 | fsched-interblock |
c662432e | 2177 | Common Report Var(flag_schedule_interblock) Init(1) Optimization |
a7b2e184 | 2178 | Enable scheduling across basic blocks. |
6ff3a151 | 2179 | |
ce18efcb VM |
2180 | fsched-pressure |
2181 | Common Report Var(flag_sched_pressure) Init(0) Optimization | |
a7b2e184 | 2182 | Enable register pressure sensitive insn scheduling. |
ce18efcb | 2183 | |
6ff3a151 | 2184 | fsched-spec |
c662432e | 2185 | Common Report Var(flag_schedule_speculative) Init(1) Optimization |
a7b2e184 | 2186 | Allow speculative motion of non-loads. |
6ff3a151 NB |
2187 | |
2188 | fsched-spec-load | |
c662432e | 2189 | Common Report Var(flag_schedule_speculative_load) Optimization |
a7b2e184 | 2190 | Allow speculative motion of some loads. |
6ff3a151 NB |
2191 | |
2192 | fsched-spec-load-dangerous | |
c662432e | 2193 | Common Report Var(flag_schedule_speculative_load_dangerous) Optimization |
a7b2e184 | 2194 | Allow speculative motion of more loads. |
6ff3a151 | 2195 | |
de32c0cb | 2196 | fsched-verbose= |
4111f1c9 | 2197 | Common RejectNegative Joined UInteger Var(sched_verbose_param) Init(1) |
a7b2e184 | 2198 | -fsched-verbose=<number> Set the verbosity level of the scheduler. |
de32c0cb | 2199 | |
6ff3a151 | 2200 | fsched2-use-superblocks |
c662432e | 2201 | Common Report Var(flag_sched2_use_superblocks) Optimization |
a7b2e184 | 2202 | If scheduling post reload, do superblock scheduling. |
6ff3a151 NB |
2203 | |
2204 | fsched2-use-traces | |
2d2bd949 | 2205 | Common Ignore |
57257f0d | 2206 | Does nothing. Preserved for backward compatibility. |
6ff3a151 | 2207 | |
de32c0cb | 2208 | fschedule-insns |
c662432e | 2209 | Common Report Var(flag_schedule_insns) Optimization |
a7b2e184 | 2210 | Reschedule instructions before register allocation. |
de32c0cb NB |
2211 | |
2212 | fschedule-insns2 | |
c662432e | 2213 | Common Report Var(flag_schedule_insns_after_reload) Optimization |
a7b2e184 | 2214 | Reschedule instructions after register allocation. |
de32c0cb | 2215 | |
e855c69d AB |
2216 | ; This flag should be on when a target implements non-trivial |
2217 | ; scheduling hooks, maybe saving some information for its own sake. | |
a7b2e184 | 2218 | ; On IA64, for example, this is used for correct bundling. |
e855c69d AB |
2219 | fselective-scheduling |
2220 | Common Report Var(flag_selective_scheduling) Optimization | |
a7b2e184 | 2221 | Schedule instructions using selective scheduling algorithm. |
e855c69d AB |
2222 | |
2223 | fselective-scheduling2 | |
a7b2e184 MS |
2224 | Common Report Var(flag_selective_scheduling2) Optimization |
2225 | Run selective scheduling after reload. | |
e855c69d | 2226 | |
ecfc21ff DM |
2227 | fself-test= |
2228 | Common Undocumented Joined Var(flag_self_test) | |
2229 | Run self-tests, using the given path to locate test files. | |
d9b950dd | 2230 | |
e855c69d AB |
2231 | fsel-sched-pipelining |
2232 | Common Report Var(flag_sel_sched_pipelining) Init(0) Optimization | |
a7b2e184 | 2233 | Perform software pipelining of inner loops during selective scheduling. |
e855c69d AB |
2234 | |
2235 | fsel-sched-pipelining-outer-loops | |
2236 | Common Report Var(flag_sel_sched_pipelining_outer_loops) Init(0) Optimization | |
a7b2e184 | 2237 | Perform software pipelining of outer loops during selective scheduling. |
e855c69d AB |
2238 | |
2239 | fsel-sched-reschedule-pipelined | |
2240 | Common Report Var(flag_sel_sched_reschedule_pipelined) Init(0) Optimization | |
a7b2e184 | 2241 | Reschedule pipelined regions without pipelining. |
e855c69d | 2242 | |
e288a46c JH |
2243 | fsemantic-interposition |
2244 | Common Report Var(flag_semantic_interposition) Init(1) | |
a7b2e184 | 2245 | Allow interposing function (or variables) by ones with different semantics (or initializer) respectively by dynamic linker. |
e288a46c | 2246 | |
31b66477 KC |
2247 | ; sched_stalled_insns means that insns can be moved prematurely from the queue |
2248 | ; of stalled insns into the ready list. | |
569fa502 | 2249 | fsched-stalled-insns |
ab442df7 | 2250 | Common Report Var(flag_sched_stalled_insns) Optimization UInteger |
a7b2e184 | 2251 | Allow premature scheduling of queued insns. |
569fa502 DN |
2252 | |
2253 | fsched-stalled-insns= | |
b16650ac | 2254 | Common RejectNegative Joined UInteger Optimization |
a7b2e184 | 2255 | -fsched-stalled-insns=<number> Set number of queued insns that can be prematurely scheduled. |
569fa502 | 2256 | |
31b66477 KC |
2257 | ; sched_stalled_insns_dep controls how many recently scheduled cycles will |
2258 | ; be examined for a dependency on a stalled insn that is candidate for | |
2259 | ; premature removal from the queue of stalled insns into the ready list (has | |
2260 | ; an effect only if the flag 'sched_stalled_insns' is set). | |
569fa502 | 2261 | fsched-stalled-insns-dep |
ab442df7 | 2262 | Common Report Var(flag_sched_stalled_insns_dep,1) Init(1) Optimization UInteger |
a7b2e184 | 2263 | Set dependence distance checking in premature scheduling of queued insns. |
569fa502 DN |
2264 | |
2265 | fsched-stalled-insns-dep= | |
b16650ac | 2266 | Common RejectNegative Joined UInteger Optimization |
a7b2e184 | 2267 | -fsched-stalled-insns-dep=<number> Set dependence distance checking in premature scheduling of queued insns. |
569fa502 | 2268 | |
ee4764a8 GS |
2269 | fsched-group-heuristic |
2270 | Common Report Var(flag_sched_group_heuristic) Init(1) Optimization | |
a7b2e184 | 2271 | Enable the group heuristic in the scheduler. |
ee4764a8 GS |
2272 | |
2273 | fsched-critical-path-heuristic | |
2274 | Common Report Var(flag_sched_critical_path_heuristic) Init(1) Optimization | |
a7b2e184 | 2275 | Enable the critical path heuristic in the scheduler. |
ee4764a8 GS |
2276 | |
2277 | fsched-spec-insn-heuristic | |
2278 | Common Report Var(flag_sched_spec_insn_heuristic) Init(1) Optimization | |
a7b2e184 | 2279 | Enable the speculative instruction heuristic in the scheduler. |
ee4764a8 | 2280 | |
ee4764a8 GS |
2281 | fsched-rank-heuristic |
2282 | Common Report Var(flag_sched_rank_heuristic) Init(1) Optimization | |
a7b2e184 | 2283 | Enable the rank heuristic in the scheduler. |
ee4764a8 GS |
2284 | |
2285 | fsched-last-insn-heuristic | |
2286 | Common Report Var(flag_sched_last_insn_heuristic) Init(1) Optimization | |
a7b2e184 | 2287 | Enable the last instruction heuristic in the scheduler. |
ee4764a8 GS |
2288 | |
2289 | fsched-dep-count-heuristic | |
2290 | Common Report Var(flag_sched_dep_count_heuristic) Init(1) Optimization | |
a7b2e184 | 2291 | Enable the dependent count heuristic in the scheduler. |
ee4764a8 | 2292 | |
aacd3885 | 2293 | fsection-anchors |
c662432e | 2294 | Common Report Var(flag_section_anchors) Optimization |
a7b2e184 | 2295 | Access data in the same section from shared anchor points. |
aacd3885 | 2296 | |
8cd37d0b | 2297 | fsee |
2d2bd949 | 2298 | Common Ignore |
8393a9c8 | 2299 | Does nothing. Preserved for backward compatibility. |
8cd37d0b | 2300 | |
87a0ebfd | 2301 | fzee |
26cd9add EI |
2302 | Common Ignore |
2303 | Does nothing. Preserved for backward compatibility. | |
2304 | ||
2305 | free | |
2306 | Common Report Var(flag_ree) Init(0) | |
2307 | Turn on Redundant Extensions Elimination pass. | |
87a0ebfd | 2308 | |
8abb6b22 | 2309 | fshow-column |
1cb42611 | 2310 | Common Report Var(flag_show_column) Init(1) |
a7b2e184 | 2311 | Show column numbers in diagnostics, when available. Default on. |
8abb6b22 | 2312 | |
484db665 BS |
2313 | fshrink-wrap |
2314 | Common Report Var(flag_shrink_wrap) Optimization | |
2315 | Emit function prologues only before parts of the function that need it, | |
2316 | rather than at the top of the function. | |
2317 | ||
20a6ece0 SB |
2318 | fshrink-wrap-separate |
2319 | Common Report Var(flag_shrink_wrap_separate) Init(1) Optimization | |
2320 | Shrink-wrap parts of the prologue and epilogue separately. | |
2321 | ||
6ff3a151 | 2322 | fsignaling-nans |
5e46b0c6 | 2323 | Common Report Var(flag_signaling_nans) Optimization SetByCombined |
a7b2e184 | 2324 | Disable optimizations observable by IEEE signaling NaNs. |
6ff3a151 | 2325 | |
db02da79 | 2326 | fsigned-zeros |
5e46b0c6 | 2327 | Common Report Var(flag_signed_zeros) Init(1) Optimization SetByCombined |
a7b2e184 | 2328 | Disable floating point optimizations that ignore the IEEE signedness of zero. |
db02da79 | 2329 | |
6ff3a151 | 2330 | fsingle-precision-constant |
c662432e | 2331 | Common Report Var(flag_single_precision_constant) Optimization |
a7b2e184 | 2332 | Convert floating point constants to single precision constants. |
6ff3a151 | 2333 | |
113d659a | 2334 | fsplit-ivs-in-unroller |
c662432e | 2335 | Common Report Var(flag_split_ivs_in_unroller) Init(1) Optimization |
a7b2e184 | 2336 | Split lifetimes of induction variables when loops are unrolled. |
113d659a | 2337 | |
7458026b ILT |
2338 | fsplit-stack |
2339 | Common Report Var(flag_split_stack) Init(-1) | |
a7b2e184 | 2340 | Generate discontiguous stack frames. |
7458026b | 2341 | |
e53a16e7 | 2342 | fsplit-wide-types |
21af5cdf | 2343 | Common Report Var(flag_split_wide_types) Optimization |
a7b2e184 | 2344 | Split wide types into independent registers. |
e53a16e7 | 2345 | |
6a75d560 RS |
2346 | fssa-backprop |
2347 | Common Report Var(flag_ssa_backprop) Init(1) Optimization | |
2348 | Enable backward propagation of use properties at the SSA level. | |
2349 | ||
68f6df73 RB |
2350 | fssa-phiopt |
2351 | Common Report Var(flag_ssa_phiopt) Optimization | |
a7b2e184 | 2352 | Optimize conditional patterns using SSA PHI nodes. |
68f6df73 | 2353 | |
98ce9490 TV |
2354 | fstdarg-opt |
2355 | Common Report Var(flag_stdarg_opt) Init(1) Optimization | |
a7b2e184 | 2356 | Optimize amount of stdarg registers saved to stack at start of function. |
98ce9490 | 2357 | |
f37a4f14 | 2358 | fvariable-expansion-in-unroller |
c662432e | 2359 | Common Report Var(flag_variable_expansion_in_unroller) Optimization |
a7b2e184 | 2360 | Apply variable expansion when loops are unrolled. |
f37a4f14 | 2361 | |
b38f3813 | 2362 | fstack-check= |
ee8f15c6 | 2363 | Common Report RejectNegative Joined Optimization |
a7b2e184 | 2364 | -fstack-check=[no|generic|specific] Insert stack checking code into the program. |
b38f3813 | 2365 | |
6ff3a151 | 2366 | fstack-check |
5de8299c | 2367 | Common Alias(fstack-check=, specific, no) |
a7b2e184 | 2368 | Insert stack checking code into the program. Same as -fstack-check=specific. |
6ff3a151 | 2369 | |
ee8f15c6 JL |
2370 | fstack-clash-protection |
2371 | Common Report Var(flag_stack_clash_protection) Optimization | |
2372 | Insert code to probe each page of stack space as it is allocated to protect | |
2373 | from stack-clash style attacks. | |
2374 | ||
de32c0cb | 2375 | fstack-limit |
21bf1558 | 2376 | Common Var(common_deferred_options) Defer |
de32c0cb | 2377 | |
058de654 | 2378 | fstack-limit-register= |
21bf1558 | 2379 | Common RejectNegative Joined Var(common_deferred_options) Defer |
a7b2e184 | 2380 | -fstack-limit-register=<register> Trap if the stack goes past <register>. |
058de654 NB |
2381 | |
2382 | fstack-limit-symbol= | |
21bf1558 | 2383 | Common RejectNegative Joined Var(common_deferred_options) Defer |
a7b2e184 | 2384 | -fstack-limit-symbol=<name> Trap if the stack goes past symbol <name>. |
058de654 | 2385 | |
7d69de61 | 2386 | fstack-protector |
5c846a81 | 2387 | Common Report Var(flag_stack_protect, 1) Init(-1) Optimization |
a7b2e184 | 2388 | Use propolice as a stack protection method. |
7d69de61 RH |
2389 | |
2390 | fstack-protector-all | |
5c846a81 | 2391 | Common Report RejectNegative Var(flag_stack_protect, 2) Init(-1) Optimization |
a7b2e184 | 2392 | Use a stack protection method for every function. |
7d69de61 | 2393 | |
f6bc1c4a | 2394 | fstack-protector-strong |
5c846a81 | 2395 | Common Report RejectNegative Var(flag_stack_protect, 3) Init(-1) Optimization |
a7b2e184 | 2396 | Use a smart stack protection method for certain functions. |
f6bc1c4a | 2397 | |
5434dc07 | 2398 | fstack-protector-explicit |
5c846a81 | 2399 | Common Report RejectNegative Var(flag_stack_protect, 4) Optimization |
a7b2e184 | 2400 | Use stack protection method only for functions with the stack_protect attribute. |
5434dc07 | 2401 | |
d3c12306 EB |
2402 | fstack-usage |
2403 | Common RejectNegative Var(flag_stack_usage) | |
a7b2e184 | 2404 | Output stack usage information on a per-function basis. |
d3c12306 | 2405 | |
de32c0cb | 2406 | fstrength-reduce |
2d2bd949 | 2407 | Common Ignore |
c0220ea4 | 2408 | Does nothing. Preserved for backward compatibility. |
de32c0cb | 2409 | |
31b66477 KC |
2410 | ; Nonzero if we should do (language-dependent) alias analysis. |
2411 | ; Typically, this analysis will assume that expressions of certain | |
2412 | ; types do not alias expressions of certain other types. Only used | |
2413 | ; if alias analysis (in general) is enabled. | |
6ff3a151 | 2414 | fstrict-aliasing |
c662432e | 2415 | Common Report Var(flag_strict_aliasing) Optimization |
a7b2e184 | 2416 | Assume strict aliasing rules apply. |
6ff3a151 | 2417 | |
eeef0e45 | 2418 | fstrict-overflow |
3fccbb9e JJ |
2419 | Common Report |
2420 | Treat signed overflow as undefined. Negated as -fwrapv -fwrapv-pointer. | |
eeef0e45 | 2421 | |
e8053cf5 RH |
2422 | fsync-libcalls |
2423 | Common Report Var(flag_sync_libcalls) Init(1) | |
a7b2e184 | 2424 | Implement __atomic operations via libcalls to legacy __sync functions. |
e8053cf5 | 2425 | |
de32c0cb | 2426 | fsyntax-only |
50431bc4 | 2427 | Common Report Var(flag_syntax_only) |
a7b2e184 | 2428 | Check for syntax errors, then stop. |
de32c0cb | 2429 | |
6ff3a151 | 2430 | ftest-coverage |
50431bc4 | 2431 | Common Report Var(flag_test_coverage) |
a7b2e184 | 2432 | Create data files needed by \"gcov\". |
6ff3a151 | 2433 | |
de32c0cb | 2434 | fthread-jumps |
c662432e | 2435 | Common Report Var(flag_thread_jumps) Optimization |
a7b2e184 | 2436 | Perform jump threading optimizations. |
de32c0cb | 2437 | |
6ff3a151 | 2438 | ftime-report |
50431bc4 | 2439 | Common Report Var(time_report) |
a7b2e184 | 2440 | Report the time taken by each compiler pass. |
6ff3a151 | 2441 | |
8df06bd0 RB |
2442 | ftime-report-details |
2443 | Common Report Var(time_report_details) | |
2444 | Record times taken by sub-phases separately. | |
2445 | ||
058de654 | 2446 | ftls-model= |
e6d4b984 | 2447 | Common Joined RejectNegative Enum(tls_model) Var(flag_tls_default) Init(TLS_MODEL_GLOBAL_DYNAMIC) |
a7b2e184 | 2448 | -ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec] Set the default thread-local storage code generation model. |
058de654 | 2449 | |
e6d4b984 JM |
2450 | Enum |
2451 | Name(tls_model) Type(enum tls_model) UnknownError(unknown TLS model %qs) | |
2452 | ||
2453 | EnumValue | |
2454 | Enum(tls_model) String(global-dynamic) Value(TLS_MODEL_GLOBAL_DYNAMIC) | |
2455 | ||
2456 | EnumValue | |
2457 | Enum(tls_model) String(local-dynamic) Value(TLS_MODEL_LOCAL_DYNAMIC) | |
2458 | ||
2459 | EnumValue | |
2460 | Enum(tls_model) String(initial-exec) Value(TLS_MODEL_INITIAL_EXEC) | |
2461 | ||
2462 | EnumValue | |
2463 | Enum(tls_model) String(local-exec) Value(TLS_MODEL_LOCAL_EXEC) | |
2464 | ||
474eccc6 | 2465 | ftoplevel-reorder |
b16650ac | 2466 | Common Report Var(flag_toplevel_reorder) Init(2) |
a7b2e184 | 2467 | Reorder top level functions, variables, and asms. |
474eccc6 | 2468 | |
de32c0cb | 2469 | ftracer |
b16650ac | 2470 | Common Report Var(flag_tracer) Optimization |
a7b2e184 | 2471 | Perform superblock formation via tail duplication. |
de32c0cb | 2472 | |
4c640e26 EB |
2473 | ftrampolines |
2474 | Common Report Var(flag_trampolines) Init(0) | |
2475 | For targets that normally need trampolines for nested functions, always | |
2476 | generate them instead of using descriptors. | |
2477 | ||
31b66477 KC |
2478 | ; Zero means that floating-point math operations cannot generate a |
2479 | ; (user-visible) trap. This is the case, for example, in nonstop | |
2480 | ; IEEE 754 arithmetic. | |
6ff3a151 | 2481 | ftrapping-math |
5e46b0c6 | 2482 | Common Report Var(flag_trapping_math) Init(1) Optimization SetByCombined |
a7b2e184 | 2483 | Assume floating-point operations can trap. |
6ff3a151 NB |
2484 | |
2485 | ftrapv | |
c662432e | 2486 | Common Report Var(flag_trapv) Optimization |
a7b2e184 | 2487 | Trap for signed overflow in addition, subtraction and multiplication. |
6ff3a151 | 2488 | |
6de9cd9a | 2489 | ftree-ccp |
c662432e | 2490 | Common Report Var(flag_tree_ccp) Optimization |
a7b2e184 | 2491 | Enable SSA-CCP optimization on trees. |
6de9cd9a | 2492 | |
0b4b14ac RG |
2493 | ftree-bit-ccp |
2494 | Common Report Var(flag_tree_bit_ccp) Optimization | |
a7b2e184 | 2495 | Enable SSA-BIT-CCP optimization on trees. |
0b4b14ac | 2496 | |
0bca51f0 | 2497 | ftree-store-ccp |
2d2bd949 | 2498 | Common Ignore |
dce2b2f6 | 2499 | Does nothing. Preserved for backward compatibility. |
0bca51f0 | 2500 | |
6de9cd9a | 2501 | ftree-ch |
c662432e | 2502 | Common Report Var(flag_tree_ch) Optimization |
a7b2e184 | 2503 | Enable loop header copying on trees. |
6de9cd9a | 2504 | |
21d01365 | 2505 | ftree-coalesce-inlined-vars |
1f9ceff1 AO |
2506 | Common Ignore RejectNegative |
2507 | Does nothing. Preserved for backward compatibility. | |
21d01365 AO |
2508 | |
2509 | ftree-coalesce-vars | |
1f9ceff1 | 2510 | Common Report Var(flag_tree_coalesce_vars) Optimization |
a7b2e184 | 2511 | Enable SSA coalescing of user variables. |
21d01365 | 2512 | |
6de9cd9a | 2513 | ftree-copyrename |
1f9ceff1 AO |
2514 | Common Ignore |
2515 | Does nothing. Preserved for backward compatibility. | |
6de9cd9a | 2516 | |
0bca51f0 | 2517 | ftree-copy-prop |
c662432e | 2518 | Common Report Var(flag_tree_copy_prop) Optimization |
a7b2e184 | 2519 | Enable copy propagation on trees. |
0bca51f0 DN |
2520 | |
2521 | ftree-store-copy-prop | |
2d2bd949 | 2522 | Common Ignore |
e9033855 | 2523 | Does nothing. Preserved for backward compatibility. |
0bca51f0 | 2524 | |
a5828d1e MM |
2525 | ftree-cselim |
2526 | Common Report Var(flag_tree_cselim) Init(2) Optimization | |
a7b2e184 | 2527 | Transform condition stores into unconditional ones. |
a5828d1e | 2528 | |
b6e99746 MJ |
2529 | ftree-switch-conversion |
2530 | Common Report Var(flag_tree_switch_conversion) Optimization | |
2531 | Perform conversions of switch initializations. | |
2532 | ||
6de9cd9a | 2533 | ftree-dce |
c662432e | 2534 | Common Report Var(flag_tree_dce) Optimization |
a7b2e184 | 2535 | Enable SSA dead code elimination optimization on trees. |
6de9cd9a DN |
2536 | |
2537 | ftree-dominator-opts | |
c662432e | 2538 | Common Report Var(flag_tree_dom) Optimization |
a7b2e184 | 2539 | Enable dominator optimizations. |
6de9cd9a | 2540 | |
c9e93168 TV |
2541 | ftree-tail-merge |
2542 | Common Report Var(flag_tree_tail_merge) Optimization | |
a7b2e184 | 2543 | Enable tail merging on trees. |
c9e93168 | 2544 | |
6de9cd9a | 2545 | ftree-dse |
c662432e | 2546 | Common Report Var(flag_tree_dse) Optimization |
a7b2e184 | 2547 | Enable dead store elimination. |
6de9cd9a | 2548 | |
248fc9f3 RG |
2549 | ftree-forwprop |
2550 | Common Report Var(flag_tree_forwprop) Init(1) Optimization | |
a7b2e184 | 2551 | Enable forward propagation on trees. |
248fc9f3 | 2552 | |
ff2ad0f7 | 2553 | ftree-fre |
c662432e | 2554 | Common Report Var(flag_tree_fre) Optimization |
a7b2e184 | 2555 | Enable Full Redundancy Elimination (FRE) on trees. |
ff2ad0f7 | 2556 | |
8b57bfeb JJ |
2557 | foptimize-strlen |
2558 | Common Report Var(flag_optimize_strlen) Optimization | |
a7b2e184 | 2559 | Enable string length optimizations on trees. |
8b57bfeb | 2560 | |
ae93744d JL |
2561 | fisolate-erroneous-paths-dereference |
2562 | Common Report Var(flag_isolate_erroneous_paths_dereference) Optimization | |
408e8aa4 SL |
2563 | Detect paths that trigger erroneous or undefined behavior due to |
2564 | dereferencing a null pointer. Isolate those paths from the main control | |
2565 | flow and turn the statement with erroneous or undefined behavior into a trap. | |
ae93744d JL |
2566 | |
2567 | fisolate-erroneous-paths-attribute | |
2568 | Common Report Var(flag_isolate_erroneous_paths_attribute) Optimization | |
51956afe | 2569 | Detect paths that trigger erroneous or undefined behavior due to a null value |
408e8aa4 | 2570 | being used in a way forbidden by a returns_nonnull or nonnull |
ae93744d | 2571 | attribute. Isolate those paths from the main control flow and turn the |
a7b2e184 | 2572 | statement with erroneous or undefined behavior into a trap. |
8fdc414d | 2573 | |
dea61d92 | 2574 | ftree-loop-distribution |
53ed2f0e | 2575 | Common Report Var(flag_tree_loop_distribution) Optimization |
a7b2e184 | 2576 | Enable loop distribution on trees. |
dea61d92 | 2577 | |
20769d5e SP |
2578 | ftree-loop-distribute-patterns |
2579 | Common Report Var(flag_tree_loop_distribute_patterns) Optimization | |
a7b2e184 | 2580 | Enable loop distribution for patterns transformed into a library call. |
20769d5e | 2581 | |
1b08d87d | 2582 | ftree-loop-im |
c662432e | 2583 | Common Report Var(flag_tree_loop_im) Init(1) Optimization |
a7b2e184 | 2584 | Enable loop invariant motion on trees. |
a7e5372d | 2585 | |
599eabdb | 2586 | ftree-loop-linear |
d6bb5ccf | 2587 | Common Alias(floop-nest-optimize) |
a7b2e184 | 2588 | Enable loop nest transforms. Same as -floop-nest-optimize. |
599eabdb | 2589 | |
1b08d87d | 2590 | ftree-loop-ivcanon |
c662432e | 2591 | Common Report Var(flag_tree_loop_ivcanon) Init(1) Optimization |
a7b2e184 | 2592 | Create canonical induction variables in loops. |
1b08d87d | 2593 | |
c66b6c66 | 2594 | ftree-loop-optimize |
c662432e | 2595 | Common Report Var(flag_tree_loop_optimize) Init(1) Optimization |
a7b2e184 | 2596 | Enable loop optimizations on tree level. |
c66b6c66 | 2597 | |
5f40b3cb | 2598 | ftree-parallelize-loops= |
b16650ac | 2599 | Common Report Joined RejectNegative UInteger Var(flag_tree_parallelize_loops) Init(1) Optimization |
9453ba0a | 2600 | -ftree-parallelize-loops=<number> Enable automatic parallelization of loops. |
5f40b3cb | 2601 | |
248fc9f3 RG |
2602 | ftree-phiprop |
2603 | Common Report Var(flag_tree_phiprop) Init(1) Optimization | |
2604 | Enable hoisting loads from conditional pointers. | |
2605 | ||
6de9cd9a | 2606 | ftree-pre |
c662432e | 2607 | Common Report Var(flag_tree_pre) Optimization |
a7b2e184 | 2608 | Enable SSA-PRE optimization on trees. |
6de9cd9a | 2609 | |
fa06ad0d JR |
2610 | ftree-partial-pre |
2611 | Common Report Var(flag_tree_partial_pre) Optimization | |
a7b2e184 | 2612 | In SSA-PRE optimization on trees, enable partial-partial redundancy elimination. |
fa06ad0d | 2613 | |
248fc9f3 | 2614 | ftree-pta |
14379e66 | 2615 | Common Report Var(flag_tree_pta) Optimization |
248fc9f3 RG |
2616 | Perform function-local points-to analysis on trees. |
2617 | ||
13c59415 UB |
2618 | ftree-reassoc |
2619 | Common Report Var(flag_tree_reassoc) Init(1) Optimization | |
a7b2e184 | 2620 | Enable reassociation on tree level. |
13c59415 | 2621 | |
c75ab022 | 2622 | ftree-salias |
2d2bd949 | 2623 | Common Ignore |
1353232d | 2624 | Does nothing. Preserved for backward compatibility. |
c75ab022 | 2625 | |
fa555252 | 2626 | ftree-sink |
c662432e | 2627 | Common Report Var(flag_tree_sink) Optimization |
a7b2e184 | 2628 | Enable SSA code sinking on trees. |
fa555252 | 2629 | |
75cfe445 BS |
2630 | ftree-slsr |
2631 | Common Report Var(flag_tree_slsr) Optimization | |
a7b2e184 | 2632 | Perform straight-line strength reduction. |
75cfe445 | 2633 | |
6de9cd9a | 2634 | ftree-sra |
c662432e | 2635 | Common Report Var(flag_tree_sra) Optimization |
a7b2e184 | 2636 | Perform scalar replacement of aggregates. |
6de9cd9a DN |
2637 | |
2638 | ftree-ter | |
3020190e | 2639 | Common Report Var(flag_tree_ter) Optimization |
a7b2e184 | 2640 | Replace temporary expressions in the SSA->normal pass. |
6de9cd9a | 2641 | |
c662432e NC |
2642 | ftree-lrs |
2643 | Common Report Var(flag_tree_live_range_split) Optimization | |
a7b2e184 | 2644 | Perform live range splitting during the SSA->normal pass. |
c662432e | 2645 | |
0bca51f0 | 2646 | ftree-vrp |
c662432e | 2647 | Common Report Var(flag_tree_vrp) Init(0) Optimization |
a7b2e184 | 2648 | Perform Value Range Propagation on trees. |
0bca51f0 | 2649 | |
8fe17e23 AA |
2650 | fsplit-paths |
2651 | Common Report Var(flag_split_paths) Init(0) Optimization | |
2652 | Split paths leading to loop backedges. | |
2653 | ||
71017a7b AL |
2654 | funconstrained-commons |
2655 | Common Var(flag_unconstrained_commons) Optimization | |
2656 | Assume common declarations may be overridden with ones with a larger | |
2657 | trailing array. | |
2658 | ||
de32c0cb | 2659 | funit-at-a-time |
b16650ac | 2660 | Common Report Var(flag_unit_at_a_time) Init(1) |
a7b2e184 | 2661 | Compile whole compilation unit at a time. |
de32c0cb NB |
2662 | |
2663 | funroll-loops | |
c662432e | 2664 | Common Report Var(flag_unroll_loops) Optimization |
a7b2e184 | 2665 | Perform loop unrolling when iteration count is known. |
de32c0cb NB |
2666 | |
2667 | funroll-all-loops | |
c662432e | 2668 | Common Report Var(flag_unroll_all_loops) Optimization |
a7b2e184 | 2669 | Perform loop unrolling for all loops. |
de32c0cb | 2670 | |
f9cc1a70 PB |
2671 | ; Nonzero means that loop optimizer may assume that the induction variables |
2672 | ; that control loops do not overflow and that the loops with nontrivial | |
2673 | ; exit condition are not infinite | |
2674 | funsafe-loop-optimizations | |
78f63b79 BC |
2675 | Common Ignore |
2676 | Does nothing. Preserved for backward compatibility. | |
f9cc1a70 | 2677 | |
a1a82611 | 2678 | fassociative-math |
b16650ac | 2679 | Common Report Var(flag_associative_math) SetByCombined Optimization |
a1a82611 RE |
2680 | Allow optimization for floating-point arithmetic which may change the |
2681 | result of the operation due to rounding. | |
2682 | ||
2683 | freciprocal-math | |
b16650ac | 2684 | Common Report Var(flag_reciprocal_math) SetByCombined Optimization |
a1a82611 RE |
2685 | Same as -fassociative-math for expressions which include division. |
2686 | ||
31b66477 KC |
2687 | ; Nonzero means that unsafe floating-point math optimizations are allowed |
2688 | ; for the sake of speed. IEEE compliance is not guaranteed, and operations | |
2689 | ; are allowed to assume that their arguments and results are "normal" | |
2690 | ; (e.g., nonnegative for SQRT). | |
6ff3a151 | 2691 | funsafe-math-optimizations |
5e46b0c6 | 2692 | Common Report Var(flag_unsafe_math_optimizations) Optimization SetByCombined |
a7b2e184 | 2693 | Allow math optimizations that may violate IEEE or ISO standards. |
6ff3a151 | 2694 | |
de32c0cb | 2695 | funswitch-loops |
c662432e | 2696 | Common Report Var(flag_unswitch_loops) Optimization |
a7b2e184 | 2697 | Perform loop unswitching. |
de32c0cb | 2698 | |
28df8730 MM |
2699 | fsplit-loops |
2700 | Common Report Var(flag_split_loops) Optimization | |
2701 | Perform loop splitting. | |
2702 | ||
6ff3a151 | 2703 | funwind-tables |
c662432e | 2704 | Common Report Var(flag_unwind_tables) Optimization |
a7b2e184 | 2705 | Just generate unwind tables for exception handling. |
6ff3a151 | 2706 | |
b352afba | 2707 | fuse-ld=bfd |
b78e932d | 2708 | Common Driver Negative(fuse-ld=gold) |
a7b2e184 | 2709 | Use the bfd linker instead of the default linker. |
b352afba NC |
2710 | |
2711 | fuse-ld=gold | |
b78e932d | 2712 | Common Driver Negative(fuse-ld=bfd) |
a7b2e184 | 2713 | Use the gold linker instead of the default linker. |
b352afba | 2714 | |
da18ea94 | 2715 | fuse-linker-plugin |
063d671d | 2716 | Common Undocumented Var(flag_use_linker_plugin) |
da18ea94 | 2717 | |
e90afde6 JM |
2718 | ; Positive if we should track variables, negative if we should run |
2719 | ; the var-tracking pass only to discard debug annotations, zero if | |
2720 | ; we're not to run it. When flag_var_tracking == 2 (AUTODETECT_VALUE) it | |
2721 | ; will be set according to optimize, debug_info_level and debug_hooks | |
2722 | ; in process_options (). | |
014a1138 | 2723 | fvar-tracking |
ff98fa95 | 2724 | Common Report Var(flag_var_tracking) Init(2) PerFunction |
a7b2e184 | 2725 | Perform variable tracking. |
014a1138 | 2726 | |
e90afde6 JM |
2727 | ; Positive if we should track variables at assignments, negative if |
2728 | ; we should run the var-tracking pass only to discard debug | |
2729 | ; annotations. When flag_var_tracking_assignments == | |
2730 | ; AUTODETECT_VALUE it will be set according to flag_var_tracking. | |
b5b8b0ac | 2731 | fvar-tracking-assignments |
ff98fa95 | 2732 | Common Report Var(flag_var_tracking_assignments) Init(2) PerFunction |
a7b2e184 | 2733 | Perform variable tracking by annotating assignments. |
b5b8b0ac | 2734 | |
e90afde6 JM |
2735 | ; Nonzero if we should toggle flag_var_tracking_assignments after |
2736 | ; processing options and computing its default. */ | |
b5b8b0ac | 2737 | fvar-tracking-assignments-toggle |
ff98fa95 | 2738 | Common Report Var(flag_var_tracking_assignments_toggle) PerFunction |
a7b2e184 | 2739 | Toggle -fvar-tracking-assignments. |
b5b8b0ac | 2740 | |
1267ca30 EB |
2741 | ; Positive if we should track uninitialized variables, negative if |
2742 | ; we should run the var-tracking pass only to discard debug | |
2743 | ; annotations. When flag_var_tracking_uninit == AUTODETECT_VALUE it | |
2744 | ; will be set according to flag_var_tracking. | |
62760ffd | 2745 | fvar-tracking-uninit |
ff98fa95 | 2746 | Common Report Var(flag_var_tracking_uninit) PerFunction |
a7b2e184 | 2747 | Perform variable tracking and also tag variables that are uninitialized. |
62760ffd | 2748 | |
26d476cd | 2749 | ; Alias to enable both -ftree-loop-vectorize and -ftree-slp-vectorize. |
79fe1b3b | 2750 | ftree-vectorize |
26d476cd | 2751 | Common Report Optimization |
a7b2e184 | 2752 | Enable vectorization on trees. |
79fe1b3b | 2753 | |
78c60e3d | 2754 | ftree-vectorizer-verbose= |
477e804b SS |
2755 | Common Joined RejectNegative Ignore |
2756 | Does nothing. Preserved for backward compatibility. | |
78c60e3d | 2757 | |
ea0f3e87 | 2758 | ftree-loop-vectorize |
26d476cd | 2759 | Common Report Var(flag_tree_loop_vectorize) Optimization EnabledBy(ftree-vectorize) |
a7b2e184 | 2760 | Enable loop vectorization on trees. |
ea0f3e87 | 2761 | |
a70d6342 | 2762 | ftree-slp-vectorize |
26d476cd | 2763 | Common Report Var(flag_tree_slp_vectorize) Optimization EnabledBy(ftree-vectorize) |
a7b2e184 | 2764 | Enable basic block vectorization (SLP) on trees. |
a70d6342 | 2765 | |
d6d11272 | 2766 | fvect-cost-model= |
b16650ac | 2767 | Common Joined RejectNegative Enum(vect_cost_model) Var(flag_vect_cost_model) Init(VECT_COST_MODEL_DEFAULT) Optimization |
6a825afe | 2768 | -fvect-cost-model=[unlimited|dynamic|cheap] Specifies the cost model for vectorization. |
a7b2e184 | 2769 | |
8b5e1202 | 2770 | fsimd-cost-model= |
b16650ac | 2771 | Common Joined RejectNegative Enum(vect_cost_model) Var(flag_simd_cost_model) Init(VECT_COST_MODEL_UNLIMITED) Optimization |
6a825afe | 2772 | -fsimd-cost-model=[unlimited|dynamic|cheap] Specifies the vectorization cost model for code marked with a simd directive. |
8b5e1202 | 2773 | |
d6d11272 XDL |
2774 | Enum |
2775 | Name(vect_cost_model) Type(enum vect_cost_model) UnknownError(unknown vectorizer cost model %qs) | |
2776 | ||
2777 | EnumValue | |
2778 | Enum(vect_cost_model) String(unlimited) Value(VECT_COST_MODEL_UNLIMITED) | |
2779 | ||
2780 | EnumValue | |
2781 | Enum(vect_cost_model) String(dynamic) Value(VECT_COST_MODEL_DYNAMIC) | |
2782 | ||
2783 | EnumValue | |
2784 | Enum(vect_cost_model) String(cheap) Value(VECT_COST_MODEL_CHEAP) | |
2785 | ||
792ed98b | 2786 | fvect-cost-model |
205d7111 | 2787 | Common Alias(fvect-cost-model=,dynamic,unlimited) |
d6d11272 XDL |
2788 | Enables the dynamic vectorizer cost model. Preserved for backward compatibility. |
2789 | ||
c12cc930 | 2790 | ftree-vect-loop-version |
d6d11272 XDL |
2791 | Common Ignore |
2792 | Does nothing. Preserved for backward compatibility. | |
c12cc930 | 2793 | |
fbf798fc | 2794 | ftree-scev-cprop |
21af5cdf | 2795 | Common Report Var(flag_tree_scev_cprop) Init(1) Optimization |
fbf798fc DN |
2796 | Enable copy propagation of scalar-evolution information. |
2797 | ||
31b66477 KC |
2798 | ; -fverbose-asm causes extra commentary information to be produced in |
2799 | ; the generated assembly code (to make it more readable). This option | |
2800 | ; is generally only of use to those who actually need to read the | |
2801 | ; generated assembly code (perhaps while debugging the compiler itself). | |
2802 | ; -fno-verbose-asm, the default, causes the extra information | |
2803 | ; to not be added and is useful when comparing two assembler files. | |
6ff3a151 | 2804 | fverbose-asm |
50431bc4 | 2805 | Common Report Var(flag_verbose_asm) |
a7b2e184 | 2806 | Add extra commentary to assembler output. |
6ff3a151 | 2807 | |
d7afec4b | 2808 | fvisibility= |
e6d4b984 | 2809 | Common Joined RejectNegative Enum(symbol_visibility) Var(default_visibility) Init(VISIBILITY_DEFAULT) |
a7b2e184 | 2810 | -fvisibility=[default|internal|hidden|protected] Set the default symbol visibility. |
d7afec4b | 2811 | |
e6d4b984 JM |
2812 | Enum |
2813 | Name(symbol_visibility) Type(enum symbol_visibility) UnknownError(unrecognized visibility value %qs) | |
2814 | ||
2815 | EnumValue | |
2816 | Enum(symbol_visibility) String(default) Value(VISIBILITY_DEFAULT) | |
2817 | ||
2818 | EnumValue | |
2819 | Enum(symbol_visibility) String(internal) Value(VISIBILITY_INTERNAL) | |
2820 | ||
2821 | EnumValue | |
2822 | Enum(symbol_visibility) String(hidden) Value(VISIBILITY_HIDDEN) | |
2823 | ||
2824 | EnumValue | |
2825 | Enum(symbol_visibility) String(protected) Value(VISIBILITY_PROTECTED) | |
d7afec4b | 2826 | |
2077db1b CT |
2827 | fvtable-verify= |
2828 | Common Joined RejectNegative Enum(vtv_priority) Var(flag_vtable_verify) Init(VTV_NO_PRIORITY) | |
2829 | Validate vtable pointers before using them. | |
2830 | ||
2831 | Enum | |
2832 | Name(vtv_priority) Type(enum vtv_priority) UnknownError(unknown vtable verify initialization priority %qs) | |
2833 | ||
2834 | EnumValue | |
2835 | Enum(vtv_priority) String(none) Value(VTV_NO_PRIORITY) | |
2836 | ||
2837 | EnumValue | |
2838 | Enum(vtv_priority) String(std) Value(VTV_STANDARD_PRIORITY) | |
2839 | ||
2840 | EnumValue | |
2841 | Enum(vtv_priority) String(preinit) Value(VTV_PREINIT_PRIORITY) | |
2842 | ||
2843 | fvtv-counts | |
2844 | Common Var(flag_vtv_counts) | |
2845 | Output vtable verification counters. | |
2846 | ||
2847 | fvtv-debug | |
2848 | Common Var(flag_vtv_debug) | |
2849 | Output vtable verification pointer sets information. | |
2850 | ||
fca9dc00 | 2851 | fvpt |
c662432e | 2852 | Common Report Var(flag_value_profile_transformations) Optimization |
a7b2e184 | 2853 | Use expression value profiles in optimizations. |
fca9dc00 | 2854 | |
62551c66 | 2855 | fweb |
c662432e | 2856 | Common Report Var(flag_web) Init(2) Optimization |
a7b2e184 | 2857 | Construct webs and split unrelated uses of single variable. |
62551c66 | 2858 | |
c2699190 XDL |
2859 | ftree-builtin-call-dce |
2860 | Common Report Var(flag_tree_builtin_call_dce) Init(0) Optimization | |
a7b2e184 | 2861 | Enable conditional dead code elimination for builtin calls. |
c2699190 | 2862 | |
ce91e74c | 2863 | fwhole-program |
b16650ac | 2864 | Common Report Var(flag_whole_program) Init(0) |
a7b2e184 | 2865 | Perform whole program optimizations. |
ce91e74c | 2866 | |
3fccbb9e JJ |
2867 | fwrapv-pointer |
2868 | Common Report Var(flag_wrapv_pointer) Optimization | |
2869 | Assume pointer overflow wraps around. | |
2870 | ||
6ff3a151 | 2871 | fwrapv |
c662432e | 2872 | Common Report Var(flag_wrapv) Optimization |
a7b2e184 | 2873 | Assume signed arithmetic overflow wraps around. |
6ff3a151 | 2874 | |
6ff3a151 | 2875 | fzero-initialized-in-bss |
50431bc4 | 2876 | Common Report Var(flag_zero_initialized_in_bss) Init(1) |
a7b2e184 | 2877 | Put zero initialized data in the bss section. |
6ff3a151 | 2878 | |
e01cc6dc | 2879 | g |
9ed32e27 | 2880 | Common Driver RejectNegative JoinedOrMissing |
a7b2e184 | 2881 | Generate debug information in default format. |
df38ffef | 2882 | |
924c9e3e AO |
2883 | gas-loc-support |
2884 | Common Driver Var(dwarf2out_as_loc_support) Init(2) | |
2885 | Assume assembler support for (DWARF2+) .loc directives | |
2886 | ||
2887 | gas-locview-support | |
2888 | Common Driver Var(dwarf2out_as_locview_support) Init(2) | |
2889 | Assume assembler support for view in (DWARF2+) .loc directives | |
2890 | ||
e7e95821 JW |
2891 | gcoff |
2892 | Common Driver Ignore Warn(switch %qs no longer supported) | |
2893 | Does nothing. Preserved for backward compatibility. | |
2894 | ||
2895 | gcoff1 | |
2896 | Common Driver Ignore Warn(switch %qs no longer supported) | |
2897 | Does nothing. Preserved for backward compatibility. | |
2898 | ||
2899 | gcoff2 | |
2900 | Common Driver Ignore Warn(switch %qs no longer supported) | |
2901 | Does nothing. Preserved for backward compatibility. | |
2902 | ||
2903 | gcoff3 | |
2904 | Common Driver Ignore Warn(switch %qs no longer supported) | |
2905 | Does nothing. Preserved for backward compatibility. | |
2906 | ||
0029b929 | 2907 | gcolumn-info |
8008dd1c | 2908 | Common Driver Var(debug_column_info,1) Init(1) |
0029b929 JJ |
2909 | Record DW_AT_decl_column and DW_AT_call_column in DWARF. |
2910 | ||
6782438d | 2911 | gdwarf |
1c70261c | 2912 | Common Driver JoinedOrMissing Negative(gdwarf-) |
a7b2e184 | 2913 | Generate debug information in default version of DWARF format. |
6782438d | 2914 | |
53b2323e | 2915 | gdwarf- |
1c70261c | 2916 | Common Driver Joined UInteger Var(dwarf_version) Init(4) Negative(gstabs) |
a7b2e184 | 2917 | Generate debug information in DWARF v2 (or later) format. |
df38ffef NB |
2918 | |
2919 | ggdb | |
1c70261c | 2920 | Common Driver JoinedOrMissing |
a7b2e184 | 2921 | Generate debug information in default extended format. |
df38ffef | 2922 | |
924c9e3e AO |
2923 | ginline-points |
2924 | Common Driver Var(debug_inline_points) Init(2) | |
2925 | Generate extended entry point information for inlined functions | |
2926 | ||
2927 | ginternal-reset-location-views | |
2928 | Common Driver Var(debug_internal_reset_location_views) Init(2) | |
2929 | Compute locview reset points based on insn length estimates | |
2930 | ||
9ed32e27 AO |
2931 | gno- |
2932 | RejectNegative Joined Undocumented | |
2933 | ; Catch the gno- prefix, so it doesn't backtrack to g<level>. | |
2934 | ||
5175cbaf | 2935 | gno-pubnames |
1c70261c | 2936 | Common Driver Negative(gpubnames) Var(debug_generate_pub_sections, 0) Init(-1) |
5175cbaf SA |
2937 | Don't generate DWARF pubnames and pubtypes sections. |
2938 | ||
2939 | gpubnames | |
1c70261c | 2940 | Common Driver Negative(ggnu-pubnames) Var(debug_generate_pub_sections, 1) |
5175cbaf SA |
2941 | Generate DWARF pubnames and pubtypes sections. |
2942 | ||
7a1dd0fa | 2943 | ggnu-pubnames |
1c70261c | 2944 | Common Driver Negative(gno-pubnames) Var(debug_generate_pub_sections, 2) |
7a1dd0fa SA |
2945 | Generate DWARF pubnames and pubtypes sections with GNU extensions. |
2946 | ||
e967adf4 | 2947 | grecord-gcc-switches |
9ed32e27 | 2948 | Common Driver Var(dwarf_record_gcc_switches) Init(1) |
e967adf4 JJ |
2949 | Record gcc command line switches in DWARF DW_AT_producer. |
2950 | ||
99ea153e | 2951 | gsplit-dwarf |
9ed32e27 | 2952 | Common Driver Var(dwarf_split_debug_info) Init(0) |
a7b2e184 | 2953 | Generate debug information in separate .dwo files. |
99ea153e | 2954 | |
df38ffef | 2955 | gstabs |
1c70261c | 2956 | Common Driver JoinedOrMissing Negative(gstabs+) |
a7b2e184 | 2957 | Generate debug information in STABS format. |
df38ffef NB |
2958 | |
2959 | gstabs+ | |
1c70261c | 2960 | Common Driver JoinedOrMissing Negative(gvms) |
a7b2e184 | 2961 | Generate debug information in extended STABS format. |
df38ffef | 2962 | |
8697bf9f AO |
2963 | gstatement-frontiers |
2964 | Common Driver Var(debug_nonbind_markers_p) Init(2) | |
2965 | Emit progressive recommended breakpoint locations. | |
2966 | ||
65f753a0 | 2967 | gstrict-dwarf |
9ed32e27 | 2968 | Common Driver Report Var(dwarf_strict) Init(0) |
a7b2e184 | 2969 | Don't emit DWARF additions beyond selected version. |
65f753a0 | 2970 | |
2153915d | 2971 | gtoggle |
1c70261c | 2972 | Common Driver Report Var(flag_gtoggle) |
a7b2e184 | 2973 | Toggle debug information generation. |
2153915d | 2974 | |
bd2b9f1e AO |
2975 | gvariable-location-views |
2976 | Common Driver Var(debug_variable_location_views, 1) Init(2) | |
2977 | Augment variable location lists with progressive views. | |
2978 | ||
2979 | gvariable-location-views=incompat5 | |
2980 | Common Driver RejectNegative Var(debug_variable_location_views, -1) Init(2) | |
2981 | ||
df38ffef | 2982 | gvms |
1c70261c | 2983 | Common Driver JoinedOrMissing Negative(gxcoff) |
a7b2e184 | 2984 | Generate debug information in VMS format. |
df38ffef NB |
2985 | |
2986 | gxcoff | |
1c70261c | 2987 | Common Driver JoinedOrMissing Negative(gxcoff+) |
a7b2e184 | 2988 | Generate debug information in XCOFF format. |
df38ffef NB |
2989 | |
2990 | gxcoff+ | |
180295ed | 2991 | Common Driver JoinedOrMissing Negative(gdwarf) |
a7b2e184 | 2992 | Generate debug information in extended XCOFF format. |
e01cc6dc | 2993 | |
29d7cbd1 RO |
2994 | Enum |
2995 | Name(compressed_debug_sections) Type(int) | |
2996 | ||
2997 | ; Since -gz= is completely handled in specs, the values aren't used and we | |
2998 | ; assign arbitrary constants. | |
2999 | EnumValue | |
3000 | Enum(compressed_debug_sections) String(none) Value(0) | |
3001 | ||
3002 | EnumValue | |
3003 | Enum(compressed_debug_sections) String(zlib) Value(1) | |
3004 | ||
3005 | EnumValue | |
3006 | Enum(compressed_debug_sections) String(zlib-gnu) Value(2) | |
3007 | ||
3008 | gz | |
3009 | Common Driver | |
a7b2e184 | 3010 | Generate compressed debug sections. |
29d7cbd1 RO |
3011 | |
3012 | gz= | |
9ed32e27 | 3013 | Common Driver RejectNegative Joined Enum(compressed_debug_sections) |
a7b2e184 | 3014 | -gz=<format> Generate compressed debug sections in format <format>. |
29d7cbd1 | 3015 | |
6d721f67 JM |
3016 | h |
3017 | Driver Joined Separate | |
3018 | ||
4adbd5dd MK |
3019 | iplugindir= |
3020 | Common Joined Var(plugindir_string) Init(0) | |
a7b2e184 | 3021 | -iplugindir=<dir> Set <dir> to be the default plugin directory. |
4adbd5dd | 3022 | |
e0cdc09f MK |
3023 | imultiarch |
3024 | Common Joined Separate RejectDriver Var(imultiarch) Init(0) | |
a7b2e184 | 3025 | -imultiarch <dir> Set <dir> to be the multiarch include subdirectory. |
e0cdc09f | 3026 | |
603349bf JM |
3027 | l |
3028 | Driver Joined Separate | |
3029 | ||
dd9f93dc JM |
3030 | n |
3031 | Driver | |
3032 | ||
603349bf JM |
3033 | no-canonical-prefixes |
3034 | Driver | |
3035 | ||
d9d16a19 JM |
3036 | nodefaultlibs |
3037 | Driver | |
3038 | ||
bab79a40 JM |
3039 | nostartfiles |
3040 | Driver | |
3041 | ||
f37866e8 OH |
3042 | nolibc |
3043 | Driver | |
3044 | ||
d9d16a19 JM |
3045 | nostdlib |
3046 | Driver | |
3047 | ||
d185d268 | 3048 | o |
d5478783 | 3049 | Common Driver Joined Separate Var(asm_file_name) MissingArgError(missing filename after %qs) |
a7b2e184 | 3050 | -o <file> Place output into <file>. |
d185d268 NB |
3051 | |
3052 | p | |
50431bc4 | 3053 | Common Var(profile_flag) |
a7b2e184 | 3054 | Enable function profiling. |
d185d268 | 3055 | |
603349bf JM |
3056 | pass-exit-codes |
3057 | Driver Var(pass_exit_codes) | |
3058 | ||
d185d268 | 3059 | pedantic |
c1771a20 | 3060 | Common Alias(Wpedantic) |
d185d268 NB |
3061 | |
3062 | pedantic-errors | |
d5478783 | 3063 | Common Var(flag_pedantic_errors) |
a7b2e184 | 3064 | Like -pedantic but issue them as errors. |
d185d268 | 3065 | |
d9d16a19 JM |
3066 | pg |
3067 | Driver | |
3068 | ||
603349bf JM |
3069 | pipe |
3070 | Driver Var(use_pipes) | |
3071 | ||
3072 | print-file-name= | |
3073 | Driver JoinedOrMissing Var(print_file_name) | |
3074 | ||
3075 | print-libgcc-file-name | |
3076 | Driver | |
3077 | ||
3078 | print-multi-directory | |
3079 | Driver Var(print_multi_directory) | |
3080 | ||
3081 | print-multi-lib | |
3082 | Driver Var(print_multi_lib) | |
3083 | ||
3084 | print-multi-os-directory | |
3085 | Driver Var(print_multi_os_directory) | |
a7b2e184 | 3086 | |
e0cdc09f MK |
3087 | print-multiarch |
3088 | Driver Var(print_multiarch) | |
603349bf JM |
3089 | |
3090 | print-prog-name= | |
3091 | Driver JoinedOrMissing Var(print_prog_name) | |
3092 | ||
3093 | print-search-dirs | |
3094 | Driver Var(print_search_dirs) | |
3095 | ||
3096 | print-sysroot | |
3097 | Driver Var(print_sysroot) | |
3098 | ||
3099 | print-sysroot-headers-suffix | |
3100 | Driver Var(print_sysroot_headers_suffix) | |
3101 | ||
d7b42618 | 3102 | quiet |
603349bf | 3103 | Common Var(quiet_flag) RejectDriver |
a7b2e184 | 3104 | Do not display functions compiled or elapsed time. |
d7b42618 | 3105 | |
dd9f93dc JM |
3106 | r |
3107 | Driver | |
3108 | ||
3109 | s | |
3110 | Driver | |
3111 | ||
603349bf JM |
3112 | save-temps |
3113 | Driver | |
3114 | ||
3115 | save-temps= | |
3116 | Driver Joined | |
3117 | ||
dd9f93dc JM |
3118 | t |
3119 | Driver | |
3120 | ||
603349bf JM |
3121 | time |
3122 | Driver Var(report_times) | |
3123 | ||
3124 | time= | |
3125 | Driver JoinedOrMissing | |
3126 | ||
e200444e JM |
3127 | u |
3128 | Driver Joined Separate | |
3129 | ||
5642f5d5 JM |
3130 | undef |
3131 | Driver | |
3132 | ; C option, but driver must not handle as "-u ndef". | |
3133 | ||
603349bf | 3134 | v |
d5478783 | 3135 | Common Driver Var(verbose_flag) |
a7b2e184 | 3136 | Enable verbose output. |
603349bf | 3137 | |
d185d268 | 3138 | version |
603349bf | 3139 | Common Var(version_flag) RejectDriver |
a7b2e184 | 3140 | Display the compiler's version. |
d185d268 NB |
3141 | |
3142 | w | |
50431bc4 | 3143 | Common Var(inhibit_warnings) |
a7b2e184 | 3144 | Suppress warnings. |
d185d268 | 3145 | |
603349bf JM |
3146 | wrapper |
3147 | Driver Separate Var(wrapper_string) | |
3148 | ||
3149 | x | |
3150 | Driver Joined Separate | |
3151 | ||
528dc603 | 3152 | shared |
b4fed890 | 3153 | Driver RejectNegative Negative(static-pie) |
a7b2e184 | 3154 | Create a shared library. |
528dc603 | 3155 | |
603349bf JM |
3156 | shared-libgcc |
3157 | Driver | |
3158 | ||
3159 | specs | |
5de8299c | 3160 | Driver Separate Alias(specs=) |
603349bf JM |
3161 | |
3162 | specs= | |
3163 | Driver Joined | |
3164 | ||
d9d16a19 JM |
3165 | static |
3166 | Driver | |
3167 | ||
603349bf JM |
3168 | static-libgcc |
3169 | Driver | |
3170 | ||
3171 | static-libgfortran | |
3172 | Driver | |
3173 | ; Documented for Fortran, but always accepted by driver. | |
3174 | ||
3175 | static-libstdc++ | |
3176 | Driver | |
3177 | ||
7a938933 ILT |
3178 | static-libgo |
3179 | Driver | |
3180 | ; Documented for Go, but always accepted by driver. | |
3181 | ||
7e8d1b2d L |
3182 | static-libasan |
3183 | Driver | |
3184 | ||
32b4b7f5 DV |
3185 | static-libtsan |
3186 | Driver | |
3187 | ||
9065ada9 JJ |
3188 | static-liblsan |
3189 | Driver | |
3190 | ||
de5a5fa1 MP |
3191 | static-libubsan |
3192 | Driver | |
3193 | ||
e200444e JM |
3194 | symbolic |
3195 | Driver | |
3196 | ||
428b3812 | 3197 | no-pie |
5460e1fc | 3198 | Driver RejectNegative Negative(shared) |
b4fed890 | 3199 | Don't create a dynamically linked position independent executable. |
428b3812 L |
3200 | |
3201 | pie | |
3202 | Driver RejectNegative Negative(no-pie) | |
b4fed890 L |
3203 | Create a dynamically linked position independent executable. |
3204 | ||
3205 | static-pie | |
3206 | Driver RejectNegative Negative(pie) | |
3207 | Create a static position independent executable. | |
528dc603 | 3208 | |
6d721f67 JM |
3209 | z |
3210 | Driver Joined Separate | |
3211 | ||
1e288103 TV |
3212 | fipa-ra |
3213 | Common Report Var(flag_ipa_ra) Optimization | |
a7b2e184 | 3214 | Use caller save register across calls if possible. |
d996e61a | 3215 | |
d7b42618 | 3216 | ; This comment is to ensure we retain the blank line above. |