]>
Commit | Line | Data |
---|---|---|
d7b42618 | 1 | ; Options for the language- and target-independent parts of the compiler. |
50431bc4 | 2 | |
d7fb0a6d | 3 | ; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
28a08168 | 4 | ; Free Software Foundation, Inc. |
d7b42618 NB |
5 | ; |
6 | ; This file is part of GCC. | |
7 | ; | |
8 | ; GCC is free software; you can redistribute it and/or modify it under | |
9 | ; the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 10 | ; Software Foundation; either version 3, or (at your option) any later |
d7b42618 | 11 | ; version. |
c22cacf3 | 12 | ; |
d7b42618 NB |
13 | ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | ; WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | ; for more details. | |
c22cacf3 | 17 | ; |
d7b42618 | 18 | ; You should have received a copy of the GNU General Public License |
9dcd6f09 NC |
19 | ; along with GCC; see the file COPYING3. If not see |
20 | ; <http://www.gnu.org/licenses/>. | |
d7b42618 | 21 | |
71733172 | 22 | ; See the GCC internals manual (options.texi) for a description of this file's format. |
d7b42618 NB |
23 | |
24 | ; Please try to keep this file in ASCII collating order. | |
25 | ||
e90afde6 JM |
26 | Variable |
27 | int target_flags | |
28 | ||
46625112 JM |
29 | Variable |
30 | int optimize | |
31 | ||
32 | Variable | |
33 | int optimize_size | |
34 | ||
a75bfaa6 JM |
35 | ; 0 means straightforward implementation of complex divide acceptable. |
36 | ; 1 means wide ranges of inputs must work for complex divide. | |
37 | ; 2 means C99-like requirements for complex multiply and divide. | |
38 | Variable | |
39 | int flag_complex_method = 1 | |
40 | ||
41 | ; Nonzero if subexpressions must be evaluated from left-to-right. | |
42 | Variable | |
43 | int flag_evaluation_order = 0 | |
44 | ||
a75bfaa6 JM |
45 | ; Language specific warning pass for unused results. |
46 | Variable | |
47 | bool flag_warn_unused_result = false | |
48 | ||
48476d13 JM |
49 | Variable |
50 | int *param_values | |
51 | ||
d5478783 JM |
52 | ; Nonzero if we should write GIMPLE bytecode for link-time optimization. |
53 | Variable | |
54 | int flag_generate_lto | |
55 | ||
56 | ; True to warn about any objects definitions whose size is larger | |
57 | ; than N bytes. Also want about function definitions whose returned | |
58 | ; values are larger than N bytes, where N is 'larger_than_size'. | |
59 | Variable | |
60 | bool warn_larger_than | |
61 | ||
62 | Variable | |
63 | HOST_WIDE_INT larger_than_size | |
64 | ||
65 | ; True to warn about any function whose frame size is larger | |
66 | ; than N bytes. | |
67 | Variable | |
68 | bool warn_frame_larger_than | |
69 | ||
70 | Variable | |
71 | HOST_WIDE_INT frame_larger_than_size | |
72 | ||
73 | ; Nonzero means we should be saving declaration info into a .X file. | |
74 | Variable | |
75 | int flag_gen_aux_info = 0 | |
76 | ||
77 | ; Nonzero if we are compiling code for a shared library, zero for | |
78 | ; executable. | |
79 | Variable | |
80 | int flag_shlib | |
81 | ||
6a1f6c9c JM |
82 | ; These two are really VEC(char_p,heap) *. |
83 | ||
84 | Variable | |
85 | void *flag_instrument_functions_exclude_functions | |
86 | ||
87 | Variable | |
88 | void *flag_instrument_functions_exclude_files | |
89 | ||
69ccdddb JM |
90 | ; Generic structs (e.g. templates not explicitly specialized) |
91 | ; may not have a compilation unit associated with them, and so | |
92 | ; may need to be treated differently from ordinary structs. | |
93 | ; | |
94 | ; Structs only handled by reference (indirectly), will also usually | |
95 | ; not need as much debugging information. | |
96 | ||
97 | Variable | |
98 | enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
99 | ||
100 | Variable | |
101 | enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
102 | ||
0576d21f JM |
103 | ; True if we should exit after parsing options. |
104 | Variable | |
105 | bool exit_after_options | |
106 | ||
107 | ; Type(s) of debugging information we are producing (if any). See | |
108 | ; flag-types.h for the definitions of the different possible types of | |
109 | ; debugging information. | |
110 | Variable | |
111 | enum debug_info_type write_symbols = NO_DEBUG | |
112 | ||
113 | ; Level of debugging information we are producing. See flag-types.h | |
114 | ; for the definitions of the different possible levels. | |
115 | Variable | |
116 | enum debug_info_levels debug_info_level = DINFO_LEVEL_NONE | |
117 | ||
118 | ; Nonzero means use GNU-only extensions in the generated symbolic | |
119 | ; debugging information. Currently, this only has an effect when | |
120 | ; write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. | |
121 | Variable | |
122 | bool use_gnu_debug_info_extensions | |
123 | ||
299404a1 JM |
124 | ; Original value of maximum field alignment in bytes, specified via |
125 | ; -fpack-struct=<value>. | |
126 | Variable | |
127 | unsigned int initial_max_fld_align = TARGET_DEFAULT_PACK_STRUCT | |
128 | ||
7cd23050 JM |
129 | Variable |
130 | enum vect_verbosity_levels user_vect_verbosity_level = MAX_VERBOSITY_LEVEL | |
131 | ||
5e471ea6 JM |
132 | ; Type of stack check. |
133 | Variable | |
134 | enum stack_check_type flag_stack_check = NO_STACK_CHECK | |
135 | ||
299404a1 JM |
136 | ; -dA causes debug commentary information to be produced in |
137 | ; the generated assembly code (to make it more readable). This option | |
138 | ; is generally only of use to those who actually need to read the | |
139 | ; generated assembly code (perhaps while debugging the compiler itself). | |
140 | ; Currently, this switch is only used by dwarf2out.c; however, it is intended | |
141 | ; to be a catchall for printing debug information in the assembler file. | |
142 | Variable | |
143 | int flag_debug_asm | |
144 | ||
145 | ; -dP causes the rtl to be emitted as a comment in assembly. | |
146 | Variable | |
147 | int flag_dump_rtl_in_asm | |
148 | ||
149 | ; Whether -da was passed (used only in handle_common_deferred_options). | |
150 | Variable | |
151 | bool flag_dump_all_passed | |
152 | ||
153 | ; Other flags saying which kinds of debugging dump have been requested. | |
154 | ||
155 | Variable | |
156 | int rtl_dump_and_exit | |
157 | ||
158 | Variable | |
159 | int flag_print_asm_name | |
160 | ||
161 | Variable | |
162 | enum graph_dump_types graph_dump_format = no_graph | |
163 | ||
a803773f JM |
164 | ; Name of top-level original source file (what was input to cpp). |
165 | ; This comes from the #-command at the beginning of the actual input. | |
166 | ; If there isn't any there, then this is the cc1 input file name. | |
167 | Variable | |
168 | const char *main_input_filename | |
169 | ||
170 | ; Pointer to base name in main_input_filename, with directories and a | |
171 | ; single final extension removed, and the length of this base | |
172 | ; name. | |
173 | ||
174 | Variable | |
175 | const char *main_input_basename | |
176 | ||
177 | Variable | |
178 | int main_input_baselength | |
179 | ||
299404a1 JM |
180 | ; Which options have been printed by --help. |
181 | Variable | |
182 | char *help_printed | |
183 | ||
e6d4b984 JM |
184 | ; Which enums have been printed by --help. 0 = not printed, no |
185 | ; relevant options seen, 1 = relevant option seen, not yet printed, 2 | |
186 | ; = printed. | |
187 | Variable | |
188 | char *help_enum_printed | |
189 | ||
299404a1 JM |
190 | ; The number of columns for --help output. |
191 | Variable | |
192 | unsigned int help_columns | |
193 | ||
194 | ; Whether this options structure has been through finish_options | |
195 | Variable | |
196 | bool flag_opts_finished | |
197 | ||
603349bf JM |
198 | ### |
199 | Driver | |
200 | ||
e200444e JM |
201 | -assemble |
202 | Driver Alias(S) | |
203 | ||
204 | -compile | |
205 | Driver Alias(c) | |
206 | ||
207 | -coverage | |
208 | Driver Alias(coverage) | |
209 | ||
210 | -debug | |
211 | Common Alias(g) | |
212 | ||
213 | -dump | |
214 | Common Separate Alias(d) | |
215 | ||
216 | -dump= | |
217 | Common Joined Alias(d) | |
218 | ||
219 | -dumpbase | |
220 | Common Separate Alias(dumpbase) | |
221 | ||
222 | -dumpdir | |
223 | Common Separate Alias(dumpdir) | |
224 | ||
225 | -entry | |
226 | Driver Separate Alias(e) | |
227 | ||
228 | -entry= | |
229 | Driver Joined Alias(e) | |
230 | ||
231 | -extra-warnings | |
232 | Common Warning Alias(Wextra) | |
233 | ||
234 | -for-assembler | |
235 | Driver Separate Alias(Xassembler) | |
236 | ||
237 | -for-assembler= | |
238 | Driver JoinedOrMissing Alias(Xassembler) | |
239 | ||
240 | -for-linker | |
241 | Driver Separate Alias(Xlinker) | |
242 | ||
243 | -for-linker= | |
244 | Driver JoinedOrMissing Alias(Xlinker) | |
245 | ||
246 | -force-link | |
247 | Driver Separate Alias(u) | |
248 | ||
249 | -force-link= | |
250 | Driver Joined Alias(u) | |
251 | ||
d185d268 | 252 | -help |
e200444e | 253 | Common Driver Var(help_flag) |
cf03fd63 | 254 | Display this information |
d185d268 | 255 | |
c662432e | 256 | -help= |
603349bf | 257 | Common Driver Report Joined |
c662432e | 258 | --help=<class> Display descriptions of a specific class of options. <class> is one or more of optimizers, target, warnings, undocumented, params |
903caebf | 259 | |
e200444e JM |
260 | -language |
261 | Driver Separate Alias(x) | |
262 | ||
263 | -language= | |
264 | Driver Joined Alias(x) | |
265 | ||
266 | -library-directory | |
267 | Driver Separate Alias(L) | |
268 | ||
269 | -library-directory= | |
270 | Driver Joined Alias(L) | |
271 | ||
272 | -no-canonical-prefixes | |
273 | Driver Alias(no-canonical-prefixes) | |
274 | ||
275 | -no-standard-libraries | |
276 | Driver Alias(nostdlib) | |
277 | ||
278 | -no-warnings | |
279 | Common Alias(w) | |
280 | ||
281 | -optimize | |
282 | Common Alias(O) | |
283 | ||
284 | -output | |
285 | Common Driver Separate Alias(o) MissingArgError(missing filename after %qs) | |
286 | ||
287 | -output= | |
288 | Common Driver Joined Alias(o) MissingArgError(missing filename after %qs) | |
289 | ||
290 | -pass-exit-codes | |
291 | Driver Alias(pass-exit-codes) | |
292 | ||
293 | -pedantic | |
294 | Common Alias(pedantic) | |
295 | ||
296 | -pedantic-errors | |
297 | Common Alias(pedantic-errors) | |
298 | ||
299 | -pie | |
300 | Common Alias(pie) | |
301 | ||
302 | -pipe | |
303 | Driver Alias(pipe) | |
304 | ||
305 | -prefix | |
306 | Driver Separate Alias(B) | |
307 | ||
308 | -prefix= | |
309 | Driver JoinedOrMissing Alias(B) | |
310 | ||
311 | -preprocess | |
312 | Driver Alias(E) | |
313 | ||
314 | -print-file-name | |
315 | Driver Separate Alias(print-file-name=) | |
316 | ||
317 | -print-file-name= | |
318 | Driver JoinedOrMissing Alias(print-file-name=) | |
319 | ||
320 | -print-libgcc-file-name | |
321 | Driver Alias(print-libgcc-file-name) | |
322 | ||
323 | -print-multi-directory | |
324 | Driver Alias(print-multi-directory) | |
325 | ||
326 | -print-multi-lib | |
327 | Driver Alias(print-multi-lib) | |
328 | ||
329 | -print-multi-os-directory | |
330 | Driver Alias(print-multi-os-directory) | |
331 | ||
332 | -print-prog-name | |
333 | Driver Separate Alias(print-prog-name=) | |
334 | ||
335 | -print-prog-name= | |
336 | Driver JoinedOrMissing Alias(print-prog-name=) | |
337 | ||
338 | -print-search-dirs | |
339 | Driver Alias(print-search-dirs) | |
340 | ||
341 | -print-sysroot | |
342 | Driver Alias(print-sysroot) | |
343 | ||
344 | -print-sysroot-headers-suffix | |
345 | Driver Alias(print-sysroot-headers-suffix) | |
346 | ||
347 | -profile | |
348 | Common Alias(p) | |
349 | ||
350 | -save-temps | |
351 | Driver Alias(save-temps) | |
352 | ||
353 | -shared | |
354 | Common Alias(shared) | |
355 | ||
356 | -specs | |
357 | Driver Separate Alias(specs=) | |
358 | ||
359 | -specs= | |
360 | Driver Joined Alias(specs=) | |
361 | ||
362 | -static | |
363 | Driver Alias(static) | |
364 | ||
365 | -symbolic | |
366 | Driver Alias(symbolic) | |
367 | ||
d185d268 | 368 | -target-help |
603349bf | 369 | Common Driver |
c662432e NC |
370 | Alias for --help=target |
371 | ||
e200444e JM |
372 | -time |
373 | Driver Alias(time) | |
374 | ||
375 | -verbose | |
376 | Driver Alias(v) | |
377 | ||
378 | ;; The driver used to convert options such as --help into forms such | |
379 | ;; as -fhelp; the following four entries are for compatibility with | |
380 | ;; any direct uses of those (undocumented) -f forms | |
c662432e | 381 | fhelp |
e200444e | 382 | Common Driver Alias(-help) |
c662432e NC |
383 | |
384 | fhelp= | |
e200444e | 385 | Common Driver Joined Alias(-help=) |
c662432e NC |
386 | |
387 | ftarget-help | |
e200444e | 388 | Common Driver Alias(-target-help) |
c662432e | 389 | |
41fd0f9b | 390 | fversion |
e200444e | 391 | Common Driver Alias(-version) |
41fd0f9b | 392 | |
c662432e NC |
393 | -param |
394 | Common Separate | |
395 | --param <param>=<value> Set parameter <param> to value. See below for a complete list of parameters | |
d185d268 | 396 | |
e200444e JM |
397 | -param= |
398 | Common Joined Alias(-param) | |
399 | ||
400 | -sysroot | |
401 | Driver Separate Alias(-sysroot=) | |
402 | ||
603349bf JM |
403 | -sysroot= |
404 | Driver JoinedOrMissing | |
405 | ||
d185d268 | 406 | -version |
603349bf JM |
407 | Common Driver |
408 | ||
409 | B | |
410 | Driver Joined Separate | |
411 | ||
412 | E | |
413 | Driver | |
d185d268 | 414 | |
d9d16a19 JM |
415 | L |
416 | Driver Joined Separate | |
417 | ||
903caebf | 418 | O |
ab442df7 | 419 | Common JoinedOrMissing Optimization |
cf03fd63 | 420 | -O<number> Set optimization level to <number> |
903caebf NB |
421 | |
422 | Os | |
ab442df7 | 423 | Common Optimization |
cf03fd63 | 424 | Optimize for space rather than speed |
903caebf | 425 | |
be6d3f0e RG |
426 | Ofast |
427 | Common Optimization | |
428 | Optimize for speed disregarding exact standards compliance | |
429 | ||
6d721f67 JM |
430 | R |
431 | Driver Joined Separate | |
432 | ||
603349bf JM |
433 | S |
434 | Driver | |
435 | ||
6d721f67 JM |
436 | T |
437 | Driver Joined Separate | |
438 | ||
439 | Tbss | |
440 | Driver Separate | |
441 | ||
442 | Tdata | |
443 | Driver Separate | |
444 | ||
445 | Ttext | |
446 | Driver Separate | |
447 | ||
903caebf | 448 | W |
5de8299c | 449 | Common RejectNegative Warning Alias(Wextra) |
28786366 | 450 | This switch is deprecated; use -Wextra instead |
903caebf | 451 | |
603349bf JM |
452 | Wa, |
453 | Driver JoinedOrMissing | |
454 | ||
455 | Wl, | |
456 | Driver JoinedOrMissing | |
457 | ||
458 | Wp, | |
459 | Driver JoinedOrMissing | |
460 | ||
e01cc6dc | 461 | Waggregate-return |
c662432e | 462 | Common Var(warn_aggregate_return) Warning |
28786366 | 463 | Warn about returning structures, unions or arrays |
e01cc6dc | 464 | |
590b1f2d | 465 | Warray-bounds |
21af5cdf | 466 | Common Var(warn_array_bounds) Warning |
590b1f2d DM |
467 | Warn if an array is accessed out of bounds |
468 | ||
5c498b10 | 469 | Wattributes |
c662432e | 470 | Common Var(warn_attributes) Init(1) Warning |
5c498b10 DD |
471 | Warn about inappropriate attribute usage |
472 | ||
e01cc6dc | 473 | Wcast-align |
c662432e | 474 | Common Var(warn_cast_align) Warning |
28786366 | 475 | Warn about pointer casts which increase alignment |
e01cc6dc | 476 | |
87cf0651 SB |
477 | Wcpp |
478 | Common Var(warn_cpp) Init(1) Warning | |
479 | Warn when a #warning directive is encountered | |
480 | ||
e01cc6dc | 481 | Wdeprecated-declarations |
c662432e | 482 | Common Var(warn_deprecated_decl) Init(1) Warning |
28786366 | 483 | Warn about uses of __attribute__((deprecated)) declarations |
e01cc6dc NB |
484 | |
485 | Wdisabled-optimization | |
c662432e | 486 | Common Var(warn_disabled_optimization) Warning |
28786366 | 487 | Warn when an optimization pass is disabled |
e01cc6dc NB |
488 | |
489 | Werror | |
50431bc4 | 490 | Common Var(warnings_are_errors) |
28786366 | 491 | Treat all warnings as errors |
e01cc6dc | 492 | |
79cf5994 DD |
493 | Werror= |
494 | Common Joined | |
495 | Treat specified warning as error | |
496 | ||
903caebf | 497 | Wextra |
62a67c94 | 498 | Common Var(extra_warnings) Warning |
cf03fd63 | 499 | Print extra (possibly unwanted) warnings |
903caebf | 500 | |
c65a01af | 501 | Wfatal-errors |
50431bc4 | 502 | Common Var(flag_fatal_errors) |
c65a01af RG |
503 | Exit on the first error occurred |
504 | ||
a214518f SP |
505 | Wframe-larger-than= |
506 | Common RejectNegative Joined UInteger | |
f94e1d66 | 507 | -Wframe-larger-than=<number> Warn if a function's stack frame requires more than <number> bytes |
a214518f | 508 | |
e01cc6dc | 509 | Winline |
c662432e | 510 | Common Var(warn_inline) Warning |
28786366 | 511 | Warn when an inlined function cannot be inlined |
e01cc6dc NB |
512 | |
513 | Wlarger-than- | |
5de8299c | 514 | Common RejectNegative Joined Warning Undocumented Alias(Wlarger-than=) |
e8fc888d MLI |
515 | |
516 | Wlarger-than= | |
517 | Common RejectNegative Joined UInteger Warning | |
518 | -Wlarger-than=<number> Warn if an object is larger than <number> bytes | |
e01cc6dc | 519 | |
f9cc1a70 | 520 | Wunsafe-loop-optimizations |
c662432e | 521 | Common Var(warn_unsafe_loop_optimizations) Warning |
f9cc1a70 PB |
522 | Warn if the loop cannot be optimized due to nontrivial assumptions. |
523 | ||
e01cc6dc | 524 | Wmissing-noreturn |
c662432e | 525 | Common Var(warn_missing_noreturn) Warning |
28786366 | 526 | Warn about functions which might be candidates for __attribute__((noreturn)) |
e01cc6dc | 527 | |
7621f5d5 VR |
528 | Wmudflap |
529 | Common Var(warn_mudflap) Init(1) Warning | |
530 | Warn about constructs not instrumented by -fmudflap | |
531 | ||
71834ad3 | 532 | Woverflow |
c662432e | 533 | Common Var(warn_overflow) Init(1) Warning |
71834ad3 RS |
534 | Warn about overflow in arithmetic expressions |
535 | ||
e01cc6dc | 536 | Wpacked |
c662432e | 537 | Common Var(warn_packed) Warning |
28786366 | 538 | Warn when the packed attribute has no effect on struct layout |
e01cc6dc NB |
539 | |
540 | Wpadded | |
c662432e | 541 | Common Var(warn_padded) Warning |
28786366 | 542 | Warn when padding is required to align structure members |
e01cc6dc NB |
543 | |
544 | Wshadow | |
c662432e | 545 | Common Var(warn_shadow) Warning |
28786366 | 546 | Warn when one local variable shadows another |
e01cc6dc | 547 | |
7d69de61 | 548 | Wstack-protector |
c662432e | 549 | Common Var(warn_stack_protect) Warning |
7d69de61 RH |
550 | Warn when not issuing stack smashing protection for some reason |
551 | ||
e01cc6dc | 552 | Wstrict-aliasing |
c662432e | 553 | Common Warning |
28786366 | 554 | Warn about code which might break strict aliasing rules |
e01cc6dc | 555 | |
5399d643 | 556 | Wstrict-aliasing= |
fcfbd84e | 557 | Common Joined RejectNegative UInteger Var(warn_strict_aliasing) Init(-1) Warning |
5399d643 JW |
558 | Warn about code which might break strict aliasing rules |
559 | ||
6ac01510 | 560 | Wstrict-overflow |
21af5cdf | 561 | Common Warning |
6ac01510 ILT |
562 | Warn about optimizations that assume that signed overflow is undefined |
563 | ||
564 | Wstrict-overflow= | |
fcfbd84e | 565 | Common Joined RejectNegative UInteger Var(warn_strict_overflow) Init(-1) Warning |
6ac01510 ILT |
566 | Warn about optimizations that assume that signed overflow is undefined |
567 | ||
5dc16b19 MLI |
568 | Wsuggest-attribute=const |
569 | Common Var(warn_suggest_attribute_const) Warning | |
570 | Warn about functions which might be candidates for __attribute__((const)) | |
571 | ||
572 | Wsuggest-attribute=pure | |
573 | Common Var(warn_suggest_attribute_pure) Warning | |
574 | Warn about functions which might be candidates for __attribute__((pure)) | |
575 | ||
7ea6b6cf JH |
576 | Wsuggest-attribute=noreturn |
577 | Common Var(warn_suggest_attribute_noreturn) Warning | |
578 | Warn about functions which might be candidates for __attribute__((noreturn)) | |
579 | ||
e01cc6dc | 580 | Wswitch |
c662432e | 581 | Common Var(warn_switch) Warning |
28786366 | 582 | Warn about enumerated switches, with no default, missing a case |
e01cc6dc NB |
583 | |
584 | Wswitch-default | |
c662432e | 585 | Common Var(warn_switch_default) Warning |
28786366 | 586 | Warn about enumerated switches missing a \"default:\" statement |
e01cc6dc NB |
587 | |
588 | Wswitch-enum | |
c662432e | 589 | Common Var(warn_switch_enum) Warning |
28786366 | 590 | Warn about all enumerated switches missing a specific case |
e01cc6dc NB |
591 | |
592 | Wsystem-headers | |
c662432e | 593 | Common Var(warn_system_headers) Warning |
f3fdaec4 | 594 | Do not suppress warnings from system headers |
e01cc6dc | 595 | |
8ffadef9 MG |
596 | Wtrampolines |
597 | Common Var(warn_trampolines) Warning | |
598 | Warn whenever a trampoline is generated | |
599 | ||
faebccf9 DN |
600 | Wtype-limits |
601 | Common Var(warn_type_limits) Init(-1) Warning | |
602 | Warn if a comparison is always true or always false due to the limited range of the data type | |
603 | ||
e01cc6dc | 604 | Wuninitialized |
62a67c94 | 605 | Common Var(warn_uninitialized) Init(-1) Warning |
28786366 | 606 | Warn about uninitialized automatic variables |
e01cc6dc NB |
607 | |
608 | Wunreachable-code | |
2d2bd949 | 609 | Common Ignore |
bc3c12a2 | 610 | Does nothing. Preserved for backward compatibility. |
e01cc6dc | 611 | |
903caebf | 612 | Wunused |
e73f7547 | 613 | Common Var(warn_unused) Init(0) Warning |
cf03fd63 | 614 | Enable all -Wunused- warnings |
903caebf | 615 | |
ebfbbdc5 JJ |
616 | Wunused-but-set-parameter |
617 | Common Var(warn_unused_but_set_parameter) Init(-1) Warning | |
618 | Warn when a function parameter is only set, otherwise unused | |
619 | ||
620 | Wunused-but-set-variable | |
621 | Common Var(warn_unused_but_set_variable) Init(-1) Warning | |
622 | Warn when a variable is only set, otherwise unused | |
623 | ||
e01cc6dc | 624 | Wunused-function |
e73f7547 | 625 | Common Var(warn_unused_function) Init(-1) Warning |
28786366 | 626 | Warn when a function is unused |
e01cc6dc NB |
627 | |
628 | Wunused-label | |
e73f7547 | 629 | Common Var(warn_unused_label) Init(-1) Warning |
28786366 | 630 | Warn when a label is unused |
e01cc6dc NB |
631 | |
632 | Wunused-parameter | |
e73f7547 | 633 | Common Var(warn_unused_parameter) Init(-1) Warning |
28786366 | 634 | Warn when a function parameter is unused |
e01cc6dc NB |
635 | |
636 | Wunused-value | |
e73f7547 | 637 | Common Var(warn_unused_value) Init(-1) Warning |
28786366 | 638 | Warn when an expression value is unused |
e01cc6dc NB |
639 | |
640 | Wunused-variable | |
e73f7547 | 641 | Common Var(warn_unused_variable) Init(-1) Warning |
28786366 | 642 | Warn when a variable is unused |
e01cc6dc | 643 | |
16c1c158 | 644 | Wcoverage-mismatch |
650cfcab NV |
645 | Common Var(warn_coverage_mismatch) Init(1) Warning |
646 | Warn in case profiles in -fprofile-use do not match | |
16c1c158 | 647 | |
603349bf JM |
648 | Xassembler |
649 | Driver Separate | |
650 | ||
651 | Xlinker | |
652 | Driver Separate | |
653 | ||
654 | Xpreprocessor | |
655 | Driver Separate | |
656 | ||
d185d268 | 657 | aux-info |
d5478783 | 658 | Common Separate Var(aux_info_file_name) |
cf03fd63 | 659 | -aux-info <file> Emit declaration information into <file> |
d185d268 NB |
660 | |
661 | aux-info= | |
5de8299c | 662 | Common Joined Alias(aux-info) |
d185d268 NB |
663 | |
664 | auxbase | |
d5478783 | 665 | Common Separate RejectDriver Var(aux_base_name) |
d185d268 NB |
666 | |
667 | auxbase-strip | |
603349bf JM |
668 | Common Separate RejectDriver |
669 | ||
e200444e JM |
670 | coverage |
671 | Driver | |
672 | ||
603349bf JM |
673 | c |
674 | Driver | |
d185d268 NB |
675 | |
676 | d | |
677 | Common Joined | |
cf03fd63 | 678 | -d<letters> Enable dumps from specific passes of the compiler |
d185d268 NB |
679 | |
680 | dumpbase | |
d5478783 | 681 | Common Separate Var(dump_base_name) |
cf03fd63 | 682 | -dumpbase <file> Set the file basename to be used for dumps |
d185d268 | 683 | |
d7fb0a6d | 684 | dumpdir |
d5478783 | 685 | Common Separate Var(dump_dir_name) |
316fc112 | 686 | -dumpdir <dir> Set the directory name to be used for dumps |
d7fb0a6d | 687 | |
603349bf JM |
688 | dumpmachine |
689 | Driver | |
690 | ||
691 | dumpspecs | |
692 | Driver | |
693 | ||
694 | dumpversion | |
695 | Driver | |
696 | ||
e200444e JM |
697 | e |
698 | Driver Joined Separate | |
699 | ||
31b66477 KC |
700 | ; The version of the C++ ABI in use. The following values are allowed: |
701 | ; | |
702 | ; 0: The version of the ABI believed most conformant with the C++ ABI | |
703 | ; specification. This ABI may change as bugs are discovered and fixed. | |
704 | ; Therefore, 0 will not necessarily indicate the same ABI in different | |
705 | ; versions of G++. | |
706 | ; | |
707 | ; 1: The version of the ABI first used in G++ 3.2. | |
708 | ; | |
abfe01ce JM |
709 | ; 2: The version of the ABI first used in G++ 3.4 (and current default). |
710 | ; | |
711 | ; 3: The version of the ABI that fixes the missing underscore | |
712 | ; in template non-type arguments of pointer type. | |
713 | ; | |
714 | ; 4: The version of the ABI that introduces unambiguous mangling of | |
715 | ; vector types. | |
99a8d35b | 716 | ; |
31b66477 KC |
717 | ; Additional positive integers will be assigned as new versions of |
718 | ; the ABI become the default version of the ABI. | |
57782ad8 | 719 | fabi-version= |
fcfbd84e | 720 | Common Joined RejectNegative UInteger Var(flag_abi_version) Init(2) |
57782ad8 | 721 | |
6ff3a151 | 722 | falign-functions |
ab442df7 | 723 | Common Report Var(align_functions,0) Optimization UInteger |
f3fdaec4 | 724 | Align the start of functions |
6ff3a151 | 725 | |
058de654 | 726 | falign-functions= |
d5478783 | 727 | Common RejectNegative Joined UInteger Var(align_functions) |
058de654 | 728 | |
6ff3a151 | 729 | falign-jumps |
ab442df7 | 730 | Common Report Var(align_jumps,0) Optimization UInteger |
f3fdaec4 | 731 | Align labels which are only reached by jumping |
6ff3a151 | 732 | |
058de654 | 733 | falign-jumps= |
d5478783 | 734 | Common RejectNegative Joined UInteger Var(align_jumps) |
058de654 | 735 | |
6ff3a151 | 736 | falign-labels |
ab442df7 | 737 | Common Report Var(align_labels,0) Optimization UInteger |
f3fdaec4 | 738 | Align all labels |
6ff3a151 | 739 | |
058de654 | 740 | falign-labels= |
d5478783 | 741 | Common RejectNegative Joined UInteger Var(align_labels) |
058de654 | 742 | |
6ff3a151 | 743 | falign-loops |
3020190e | 744 | Common Report Var(align_loops,0) Optimization UInteger |
f3fdaec4 | 745 | Align the start of loops |
6ff3a151 | 746 | |
058de654 | 747 | falign-loops= |
d5478783 | 748 | Common RejectNegative Joined UInteger Var(align_loops) |
058de654 | 749 | |
6ff3a151 | 750 | fargument-alias |
2d2bd949 | 751 | Common Ignore |
0d3c82d6 | 752 | Does nothing. Preserved for backward compatibility. |
6ff3a151 NB |
753 | |
754 | fargument-noalias | |
2d2bd949 | 755 | Common Ignore |
0d3c82d6 | 756 | Does nothing. Preserved for backward compatibility. |
6ff3a151 NB |
757 | |
758 | fargument-noalias-global | |
2d2bd949 | 759 | Common Ignore |
0d3c82d6 | 760 | Does nothing. Preserved for backward compatibility. |
6ff3a151 | 761 | |
0698a1d2 | 762 | fargument-noalias-anything |
2d2bd949 | 763 | Common Ignore |
0d3c82d6 | 764 | Does nothing. Preserved for backward compatibility. |
0698a1d2 | 765 | |
6ff3a151 | 766 | fasynchronous-unwind-tables |
c662432e | 767 | Common Report Var(flag_asynchronous_unwind_tables) Optimization |
f3fdaec4 | 768 | Generate unwind tables that are exact at each instruction boundary |
6ff3a151 | 769 | |
6fb5fa3c DB |
770 | fauto-inc-dec |
771 | Common Report Var(flag_auto_inc_dec) Init(1) | |
772 | Generate auto-inc/dec instructions | |
773 | ||
31b66477 KC |
774 | ; -fcheck-bounds causes gcc to generate array bounds checks. |
775 | ; For C, C++ and ObjC: defaults off. | |
776 | ; For Java: defaults to on. | |
777 | ; For Fortran: defaults to off. | |
6ff3a151 | 778 | fbounds-check |
50431bc4 | 779 | Common Report Var(flag_bounds_check) |
f3fdaec4 | 780 | Generate code to check bounds before indexing arrays |
6ff3a151 NB |
781 | |
782 | fbranch-count-reg | |
c662432e | 783 | Common Report Var(flag_branch_on_count_reg) Init(1) Optimization |
f3fdaec4 | 784 | Replace add, compare, branch with branch on count register |
6ff3a151 NB |
785 | |
786 | fbranch-probabilities | |
c662432e | 787 | Common Report Var(flag_branch_probabilities) Optimization |
f3fdaec4 | 788 | Use profiling information for branch probabilities |
6ff3a151 | 789 | |
de32c0cb | 790 | fbranch-target-load-optimize |
c662432e | 791 | Common Report Var(flag_branch_target_load_optimize) Optimization |
f3fdaec4 | 792 | Perform branch target load optimization before prologue / epilogue threading |
de32c0cb NB |
793 | |
794 | fbranch-target-load-optimize2 | |
c662432e | 795 | Common Report Var(flag_branch_target_load_optimize2) Optimization |
f3fdaec4 | 796 | Perform branch target load optimization after prologue / epilogue threading |
de32c0cb | 797 | |
1194fc79 | 798 | fbtr-bb-exclusive |
c662432e | 799 | Common Report Var(flag_btr_bb_exclusive) Optimization |
1194fc79 R |
800 | Restrict target load migration not to re-use registers in any basic block |
801 | ||
058de654 | 802 | fcall-saved- |
21bf1558 | 803 | Common Joined RejectNegative Var(common_deferred_options) Defer |
cf03fd63 | 804 | -fcall-saved-<register> Mark <register> as being preserved across functions |
058de654 NB |
805 | |
806 | fcall-used- | |
21bf1558 | 807 | Common Joined RejectNegative Var(common_deferred_options) Defer |
cf03fd63 | 808 | -fcall-used-<register> Mark <register> as being corrupted by function calls |
058de654 | 809 | |
31b66477 KC |
810 | ; Nonzero for -fcaller-saves: allocate values in regs that need to |
811 | ; be saved across function calls, if that produces overall better code. | |
812 | ; Optional now, so people can test it. | |
de32c0cb | 813 | fcaller-saves |
c662432e | 814 | Common Report Var(flag_caller_saves) Optimization |
f3fdaec4 | 815 | Save registers around function calls |
de32c0cb | 816 | |
3d8864c0 SP |
817 | fcheck-data-deps |
818 | Common Report Var(flag_check_data_deps) | |
819 | Compare the results of several data dependence analyzers. | |
820 | ||
ccaeeafe NC |
821 | fcombine-stack-adjustments |
822 | Common Report Var(flag_combine_stack_adjustments) Optimization | |
823 | Looks for opportunities to reduce stack adjustments and stack references. | |
824 | ||
6ff3a151 | 825 | fcommon |
c662432e | 826 | Common Report Var(flag_no_common,0) Optimization |
f3fdaec4 | 827 | Do not put uninitialized globals in the common section |
6ff3a151 | 828 | |
603349bf JM |
829 | fcompare-debug |
830 | Driver | |
831 | ; Converted by the driver to -fcompare-debug= options. | |
832 | ||
2153915d | 833 | fcompare-debug= |
603349bf | 834 | Common Driver JoinedOrMissing RejectNegative Var(flag_compare_debug_opt) |
f94e1d66 | 835 | -fcompare-debug[=<opts>] Compile with and without e.g. -gtoggle, and compare the final-insns dump |
2153915d AO |
836 | |
837 | fcompare-debug-second | |
5e471ea6 | 838 | Common Driver RejectNegative Var(flag_compare_debug) |
2153915d AO |
839 | Run only the second compilation of -fcompare-debug |
840 | ||
b5b8b0ac AO |
841 | fconserve-stack |
842 | Common Var(flag_conserve_stack) Optimization | |
843 | Do not perform optimizations increasing noticeably stack usage | |
844 | ||
6ff3a151 | 845 | fcprop-registers |
c662432e | 846 | Common Report Var(flag_cprop_registers) Optimization |
f3fdaec4 | 847 | Perform a register copy-propagation optimization pass |
6ff3a151 | 848 | |
de32c0cb | 849 | fcrossjumping |
c662432e | 850 | Common Report Var(flag_crossjumping) Optimization |
f3fdaec4 | 851 | Perform cross-jumping optimization |
de32c0cb NB |
852 | |
853 | fcse-follow-jumps | |
c662432e | 854 | Common Report Var(flag_cse_follow_jumps) Optimization |
f3fdaec4 | 855 | When running CSE, follow jumps to their targets |
de32c0cb NB |
856 | |
857 | fcse-skip-blocks | |
2d2bd949 | 858 | Common Ignore |
5f39ad47 | 859 | Does nothing. Preserved for backward compatibility. |
de32c0cb | 860 | |
c7463669 | 861 | fcx-limited-range |
c662432e | 862 | Common Report Var(flag_cx_limited_range) Optimization |
c7463669 RH |
863 | Omit range reduction step when performing complex division |
864 | ||
35085f76 JB |
865 | fcx-fortran-rules |
866 | Common Report Var(flag_cx_fortran_rules) Optimization | |
867 | Complex multiplication and division follow Fortran rules | |
868 | ||
6ff3a151 | 869 | fdata-sections |
c662432e | 870 | Common Report Var(flag_data_sections) Optimization |
f3fdaec4 | 871 | Place data items into their own section |
6ff3a151 | 872 | |
0a090f42 | 873 | fdbg-cnt-list |
299404a1 | 874 | Common Report Var(common_deferred_options) Defer |
0a090f42 SP |
875 | List all available debugging counters with their limits and counts. |
876 | ||
6fb5fa3c | 877 | fdbg-cnt= |
299404a1 | 878 | Common RejectNegative Joined Var(common_deferred_options) Defer |
f94e1d66 | 879 | -fdbg-cnt=<counter>:<limit>[,<counter>:<limit>,...] Set the debug counter limit. |
6fb5fa3c | 880 | |
c8aea42c | 881 | fdebug-prefix-map= |
299404a1 | 882 | Common Joined RejectNegative Var(common_deferred_options) Defer |
c8aea42c PB |
883 | Map one directory name to another in debug information |
884 | ||
31b66477 KC |
885 | ; Nonzero for -fdefer-pop: don't pop args after each function call |
886 | ; instead save them up to pop many calls' args with one insns. | |
de32c0cb | 887 | fdefer-pop |
c662432e | 888 | Common Report Var(flag_defer_pop) Optimization |
f3fdaec4 | 889 | Defer popping functions args from stack until later |
de32c0cb NB |
890 | |
891 | fdelayed-branch | |
c662432e | 892 | Common Report Var(flag_delayed_branch) Optimization |
f3fdaec4 | 893 | Attempt to fill delay slots of branch instructions |
de32c0cb NB |
894 | |
895 | fdelete-null-pointer-checks | |
1ad2f450 | 896 | Common Report Var(flag_delete_null_pointer_checks) Init(1) Optimization |
f3fdaec4 | 897 | Delete useless null pointer checks |
de32c0cb NB |
898 | |
899 | fdiagnostics-show-location= | |
e6d4b984 | 900 | Common Joined RejectNegative Enum(diagnostic_prefixing_rule) |
cf03fd63 | 901 | -fdiagnostics-show-location=[once|every-line] How often to emit source location at the beginning of line-wrapped diagnostics |
de32c0cb | 902 | |
e6d4b984 JM |
903 | ; Required for these enum values. |
904 | SourceInclude | |
905 | pretty-print.h | |
906 | ||
907 | Enum | |
908 | Name(diagnostic_prefixing_rule) Type(int) | |
909 | ||
910 | EnumValue | |
911 | Enum(diagnostic_prefixing_rule) String(once) Value(DIAGNOSTICS_SHOW_PREFIX_ONCE) | |
912 | ||
913 | EnumValue | |
914 | Enum(diagnostic_prefixing_rule) String(every-line) Value(DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE) | |
915 | ||
ccf08a6e | 916 | fdiagnostics-show-option |
c7d0de89 | 917 | Common Var(flag_diagnostics_show_option) Init(1) |
c85ce869 | 918 | Amend appropriate diagnostic messages with the command line option that controls them |
ccf08a6e | 919 | |
6de9cd9a | 920 | fdump- |
21bf1558 | 921 | Common Joined RejectNegative Var(common_deferred_options) Defer |
6de9cd9a DN |
922 | -fdump-<type> Dump various compiler internals to a file |
923 | ||
d1583032 JM |
924 | fdump-final-insns |
925 | Driver RejectNegative | |
926 | ||
2153915d AO |
927 | fdump-final-insns= |
928 | Common RejectNegative Joined Var(flag_dump_final_insns) | |
929 | -fdump-final-insns=filename Dump to filename the insns at the end of translation | |
930 | ||
c6a13190 ILT |
931 | fdump-go-spec= |
932 | Common RejectNegative Joined Var(flag_dump_go_spec) | |
933 | -fdump-go-spec=filename Write all declarations to file as Go code | |
934 | ||
24a7799e R |
935 | fdump-noaddr |
936 | Common Report Var(flag_dump_noaddr) | |
937 | Suppress output of addresses in debugging dumps | |
938 | ||
6ff3a151 | 939 | fdump-unnumbered |
e90afde6 | 940 | Common Report Var(flag_dump_unnumbered) |
24a7799e | 941 | Suppress output of instruction numbers, line number notes and addresses in debugging dumps |
6ff3a151 | 942 | |
2aa7c49b | 943 | fdump-unnumbered-links |
e90afde6 | 944 | Common Report Var(flag_dump_unnumbered_links) |
2aa7c49b AO |
945 | Suppress output of previous and next insn numbers in debugging dumps |
946 | ||
b5b8b0ac AO |
947 | fdwarf2-cfi-asm |
948 | Common Report Var(flag_dwarf2_cfi_asm) Init(HAVE_GAS_CFI_DIRECTIVE) | |
949 | Enable CFI tables via GAS assembler directives. | |
950 | ||
355866de | 951 | fearly-inlining |
c662432e | 952 | Common Report Var(flag_early_inlining) Init(1) Optimization |
355866de RG |
953 | Perform early inlining |
954 | ||
de32c0cb | 955 | feliminate-dwarf2-dups |
50431bc4 | 956 | Common Report Var(flag_eliminate_dwarf2_dups) |
f3fdaec4 | 957 | Perform DWARF2 duplicate elimination |
de32c0cb | 958 | |
07ffa034 MJ |
959 | fipa-sra |
960 | Common Report Var(flag_ipa_sra) Init(0) Optimization | |
961 | Perform interprocedural reduction of aggregates | |
962 | ||
6a08f7b3 | 963 | feliminate-unused-debug-symbols |
50431bc4 | 964 | Common Report Var(flag_debug_only_used_symbols) |
f3fdaec4 | 965 | Perform unused type elimination in debug info |
6a08f7b3 | 966 | |
de32c0cb | 967 | feliminate-unused-debug-types |
50431bc4 | 968 | Common Report Var(flag_eliminate_unused_debug_types) Init(1) |
f3fdaec4 | 969 | Perform unused type elimination in debug info |
de32c0cb | 970 | |
e713adf6 | 971 | femit-class-debug-always |
eae8e474 | 972 | Common Report Var(flag_emit_class_debug_always) Init(0) |
e713adf6 CD |
973 | Do not suppress C++ class debug information. |
974 | ||
77831620 CC |
975 | fenable-icf-debug |
976 | Common Report Var(flag_enable_icf_debug) | |
977 | Generate debug information to support Identical Code Folding (ICF) | |
978 | ||
6ff3a151 | 979 | fexceptions |
c662432e | 980 | Common Report Var(flag_exceptions) Optimization |
f3fdaec4 | 981 | Enable exception handling |
6ff3a151 | 982 | |
de32c0cb | 983 | fexpensive-optimizations |
c662432e | 984 | Common Report Var(flag_expensive_optimizations) Optimization |
f3fdaec4 | 985 | Perform a number of minor, expensive optimizations |
de32c0cb | 986 | |
8ce94e44 | 987 | fexcess-precision= |
e6d4b984 | 988 | Common Joined RejectNegative Enum(excess_precision) Var(flag_excess_precision_cmdline) Init(EXCESS_PRECISION_DEFAULT) |
8ce94e44 JM |
989 | -fexcess-precision=[fast|standard] Specify handling of excess floating-point precision |
990 | ||
e6d4b984 JM |
991 | Enum |
992 | Name(excess_precision) Type(enum excess_precision) UnknownError(unknown excess precision style %qs) | |
993 | ||
994 | EnumValue | |
995 | Enum(excess_precision) String(fast) Value(EXCESS_PRECISION_FAST) | |
996 | ||
997 | EnumValue | |
998 | Enum(excess_precision) String(standard) Value(EXCESS_PRECISION_STANDARD) | |
999 | ||
058de654 NB |
1000 | ffast-math |
1001 | Common | |
1002 | ||
6ff3a151 | 1003 | ffinite-math-only |
c662432e | 1004 | Common Report Var(flag_finite_math_only) Optimization |
f3fdaec4 | 1005 | Assume no NaNs or infinities are generated |
6ff3a151 | 1006 | |
058de654 | 1007 | ffixed- |
21bf1558 | 1008 | Common Joined RejectNegative Var(common_deferred_options) Defer |
cf03fd63 | 1009 | -ffixed-<register> Mark <register> as being unavailable to the compiler |
058de654 | 1010 | |
de32c0cb | 1011 | ffloat-store |
c662432e | 1012 | Common Report Var(flag_float_store) Optimization |
31b66477 | 1013 | Don't allocate floats and doubles in extended-precision registers |
de32c0cb NB |
1014 | |
1015 | fforce-addr | |
2d2bd949 | 1016 | Common Ignore |
3de5e93a | 1017 | Does nothing. Preserved for backward compatibility. |
de32c0cb | 1018 | |
2ca2b607 SB |
1019 | fforward-propagate |
1020 | Common Report Var(flag_forward_propagate) Optimization | |
a52b023a PB |
1021 | Perform a forward propagation pass on RTL |
1022 | ||
16949072 | 1023 | ffp-contract= |
e6d4b984 | 1024 | Common Joined RejectNegative Enum(fp_contract_mode) Var(flag_fp_contract_mode) Init(FP_CONTRACT_FAST) |
16949072 RG |
1025 | -ffp-contract=[off|on|fast] Perform floating-point expression contraction. |
1026 | ||
e6d4b984 JM |
1027 | Enum |
1028 | Name(fp_contract_mode) Type(enum fp_contract_mode) UnknownError(unknown floating point contraction style %qs) | |
1029 | ||
1030 | EnumValue | |
1031 | Enum(fp_contract_mode) String(off) Value(FP_CONTRACT_OFF) | |
1032 | ||
1033 | ; Not implemented, fall back to conservative FP_CONTRACT_OFF. | |
1034 | EnumValue | |
1035 | Enum(fp_contract_mode) String(on) Value(FP_CONTRACT_OFF) | |
1036 | ||
1037 | EnumValue | |
1038 | Enum(fp_contract_mode) String(fast) Value(FP_CONTRACT_FAST) | |
1039 | ||
31b66477 KC |
1040 | ; Nonzero means don't put addresses of constant functions in registers. |
1041 | ; Used for compiling the Unix kernel, where strange substitutions are | |
1042 | ; done on the assembly output. | |
de32c0cb | 1043 | ffunction-cse |
50431bc4 | 1044 | Common Report Var(flag_no_function_cse,0) |
f3fdaec4 | 1045 | Allow function addresses to be held in registers |
de32c0cb | 1046 | |
6ff3a151 | 1047 | ffunction-sections |
50431bc4 | 1048 | Common Report Var(flag_function_sections) |
f3fdaec4 | 1049 | Place each function into its own section |
6ff3a151 | 1050 | |
de32c0cb | 1051 | fgcse |
c662432e | 1052 | Common Report Var(flag_gcse) Optimization |
f3fdaec4 | 1053 | Perform global common subexpression elimination |
de32c0cb NB |
1054 | |
1055 | fgcse-lm | |
c662432e | 1056 | Common Report Var(flag_gcse_lm) Init(1) Optimization |
f3fdaec4 | 1057 | Perform enhanced load motion during global common subexpression elimination |
de32c0cb NB |
1058 | |
1059 | fgcse-sm | |
c662432e | 1060 | Common Report Var(flag_gcse_sm) Init(0) Optimization |
f3fdaec4 | 1061 | Perform store motion after global common subexpression elimination |
de32c0cb | 1062 | |
f5f2e3cd | 1063 | fgcse-las |
c662432e | 1064 | Common Report Var(flag_gcse_las) Init(0) Optimization |
f9957958 MH |
1065 | Perform redundant load after store elimination in global common subexpression |
1066 | elimination | |
1067 | ||
1068 | fgcse-after-reload | |
c662432e | 1069 | Common Report Var(flag_gcse_after_reload) Optimization |
f9957958 | 1070 | Perform global common subexpression elimination after register allocation |
c85ce869 | 1071 | has finished |
f5f2e3cd | 1072 | |
d0a58904 | 1073 | ; This option is not documented yet as its semantics will change. |
f8bf9252 SP |
1074 | fgraphite |
1075 | Common Report Var(flag_graphite) | |
1076 | Enable in and out of Graphite representation | |
1077 | ||
204b560f SP |
1078 | fgraphite-identity |
1079 | Common Report Var(flag_graphite_identity) Optimization | |
1080 | Enable Graphite Identity transformation | |
1081 | ||
3cf0e270 SP |
1082 | floop-parallelize-all |
1083 | Common Report Var(flag_loop_parallelize_all) Optimization | |
204b560f SP |
1084 | Mark all loops as parallel |
1085 | ||
f8bf9252 SP |
1086 | floop-strip-mine |
1087 | Common Report Var(flag_loop_strip_mine) Optimization | |
1088 | Enable Loop Strip Mining transformation | |
1089 | ||
1090 | floop-interchange | |
1091 | Common Report Var(flag_loop_interchange) Optimization | |
1092 | Enable Loop Interchange transformation | |
1093 | ||
1094 | floop-block | |
1095 | Common Report Var(flag_loop_block) Optimization | |
1096 | Enable Loop Blocking transformation | |
1097 | ||
98af4c9f SP |
1098 | floop-flatten |
1099 | Common Report Var(flag_loop_flatten) Optimization | |
1100 | Enable Loop Flattening transformation | |
1101 | ||
6a78b724 DD |
1102 | fstrict-volatile-bitfields |
1103 | Common Report Var(flag_strict_volatile_bitfields) Init(-1) | |
1104 | Force bitfield accesses to match their type width | |
1105 | ||
6ff3a151 | 1106 | fguess-branch-probability |
c662432e | 1107 | Common Report Var(flag_guess_branch_prob) Optimization |
f3fdaec4 | 1108 | Enable guessing of branch probabilities |
6ff3a151 | 1109 | |
31b66477 KC |
1110 | ; Nonzero means ignore `#ident' directives. 0 means handle them. |
1111 | ; Generate position-independent code for executables if possible | |
1112 | ; On SVR4 targets, it also controls whether or not to emit a | |
1113 | ; string identifying the compiler. | |
6ff3a151 | 1114 | fident |
50431bc4 | 1115 | Common Report Var(flag_no_ident,0) |
f3fdaec4 | 1116 | Process #ident directives |
6ff3a151 | 1117 | |
de32c0cb | 1118 | fif-conversion |
c662432e | 1119 | Common Report Var(flag_if_conversion) Optimization |
f3fdaec4 | 1120 | Perform conversion of conditional jumps to branchless equivalents |
de32c0cb NB |
1121 | |
1122 | fif-conversion2 | |
c662432e | 1123 | Common Report Var(flag_if_conversion2) Optimization |
f3fdaec4 | 1124 | Perform conversion of conditional jumps to conditional execution |
de32c0cb | 1125 | |
384a5197 SP |
1126 | ftree-loop-if-convert |
1127 | Common Report Var(flag_tree_loop_if_convert) Init(-1) Optimization | |
1128 | Convert conditional jumps in innermost loops to branchless equivalents | |
1129 | ||
bd544141 SP |
1130 | ftree-loop-if-convert-stores |
1131 | Common Report Var(flag_tree_loop_if_convert_stores) Optimization | |
1132 | Also if-convert conditional jumps containing memory writes | |
1133 | ||
31b66477 KC |
1134 | ; -finhibit-size-directive inhibits output of .size for ELF. |
1135 | ; This is used only for compiling crtstuff.c, | |
1136 | ; and it may be extended to other effects | |
1137 | ; needed for crtstuff.c on other systems. | |
6ff3a151 | 1138 | finhibit-size-directive |
50431bc4 | 1139 | Common Report Var(flag_inhibit_size_directive) |
f3fdaec4 | 1140 | Do not generate .size directives |
6ff3a151 | 1141 | |
3e293154 MJ |
1142 | findirect-inlining |
1143 | Common Report Var(flag_indirect_inlining) | |
1144 | Perform indirect inlining | |
1145 | ||
31b66477 KC |
1146 | ; Nonzero means that functions declared `inline' will be treated |
1147 | ; as `static'. Prevents generation of zillions of copies of unused | |
1148 | ; static inline functions; instead, `inlines' are written out | |
1149 | ; only when actually used. Used in conjunction with -g. Also | |
1150 | ; does the right thing with #pragma interface. | |
de32c0cb | 1151 | finline |
e90acd93 | 1152 | Common Report Var(flag_no_inline,0) Init(0) |
f3fdaec4 | 1153 | Pay attention to the \"inline\" keyword |
de32c0cb | 1154 | |
4d4b8cb9 JH |
1155 | finline-small-functions |
1156 | Common Report Var(flag_inline_small_functions) Optimization | |
1157 | Integrate simple functions into their callers when code size is known to not growth | |
1158 | ||
de32c0cb | 1159 | finline-functions |
c662432e | 1160 | Common Report Var(flag_inline_functions) Optimization |
f3fdaec4 | 1161 | Integrate simple functions into their callers |
de32c0cb | 1162 | |
355866de | 1163 | finline-functions-called-once |
c662432e | 1164 | Common Report Var(flag_inline_functions_called_once) Init(1) Optimization |
355866de | 1165 | Integrate functions called once into their callers |
d63db217 | 1166 | |
d302c9d6 | 1167 | finline-limit- |
5de8299c | 1168 | Common RejectNegative Joined Alias(finline-limit=) |
d302c9d6 NB |
1169 | |
1170 | finline-limit= | |
1171 | Common RejectNegative Joined UInteger | |
cf03fd63 | 1172 | -finline-limit=<number> Limit the size of inlined functions to <number> |
d302c9d6 | 1173 | |
6ff3a151 | 1174 | finstrument-functions |
50431bc4 | 1175 | Common Report Var(flag_instrument_function_entry_exit) |
f3fdaec4 | 1176 | Instrument function entry and exit with profiling calls |
6ff3a151 | 1177 | |
8d5a7d1f ILT |
1178 | finstrument-functions-exclude-function-list= |
1179 | Common RejectNegative Joined | |
1180 | -finstrument-functions-exclude-function-list=name,... Do not instrument listed functions | |
1181 | ||
1182 | finstrument-functions-exclude-file-list= | |
1183 | Common RejectNegative Joined | |
1184 | -finstrument-functions-exclude-file-list=filename,... Do not instrument functions listed in files | |
1185 | ||
d6e14e8f | 1186 | fipa-cp |
c662432e | 1187 | Common Report Var(flag_ipa_cp) Optimization |
d6e14e8f SB |
1188 | Perform Interprocedural constant propagation |
1189 | ||
5e45130d JH |
1190 | fipa-cp-clone |
1191 | Common Report Var(flag_ipa_cp_clone) Optimization | |
1192 | Perform cloning to make Interprocedural constant propagation stronger | |
1193 | ||
e65bb9be JH |
1194 | fipa-profile |
1195 | Common Report Var(flag_ipa_profile) Init(0) Optimization | |
1196 | Perform interprocedural profile propagation | |
ea900239 | 1197 | |
4cf4d6a3 | 1198 | fipa-pta |
c662432e | 1199 | Common Report Var(flag_ipa_pta) Init(0) Optimization |
4cf4d6a3 DB |
1200 | Perform interprocedural points-to analysis |
1201 | ||
e65bb9be JH |
1202 | fipa-pure-const |
1203 | Common Report Var(flag_ipa_pure_const) Init(0) Optimization | |
1204 | Discover pure and const functions | |
1205 | ||
ea900239 | 1206 | fipa-reference |
c662432e | 1207 | Common Report Var(flag_ipa_reference) Init(0) Optimization |
ea900239 DB |
1208 | Discover readonly and non addressable static variables |
1209 | ||
43d861a5 | 1210 | fipa-matrix-reorg |
6ae4be32 | 1211 | Common Report Var(flag_ipa_matrix_reorg) Optimization |
43d861a5 RL |
1212 | Perform matrix layout flattening and transposing based |
1213 | on profiling information. | |
1214 | ||
e1dc98b2 OG |
1215 | fipa-struct-reorg |
1216 | Common Report Var(flag_ipa_struct_reorg) | |
1217 | Perform structure layout optimizations based | |
1218 | on profiling information. | |
1219 | ||
058e97ec | 1220 | fira-algorithm= |
e6d4b984 | 1221 | Common Joined RejectNegative Enum(ira_algorithm) Var(flag_ira_algorithm) Init(IRA_ALGORITHM_CB) |
7db7ed3c VM |
1222 | -fira-algorithm=[CB|priority] Set the used IRA algorithm |
1223 | ||
e6d4b984 JM |
1224 | Enum |
1225 | Name(ira_algorithm) Type(enum ira_algorithm) UnknownError(unknown IRA algorithm %qs) | |
1226 | ||
1227 | EnumValue | |
1228 | Enum(ira_algorithm) String(CB) Value(IRA_ALGORITHM_CB) | |
1229 | ||
1230 | EnumValue | |
1231 | Enum(ira_algorithm) String(priority) Value(IRA_ALGORITHM_PRIORITY) | |
1232 | ||
7db7ed3c | 1233 | fira-region= |
e6d4b984 | 1234 | Common Joined RejectNegative Enum(ira_region) Var(flag_ira_region) Init(IRA_REGION_MIXED) |
7db7ed3c | 1235 | -fira-region=[one|all|mixed] Set regions for IRA |
058e97ec | 1236 | |
e6d4b984 JM |
1237 | Enum |
1238 | Name(ira_region) Type(enum ira_region) UnknownError(unknown IRA region %qs) | |
1239 | ||
1240 | EnumValue | |
1241 | Enum(ira_region) String(one) Value(IRA_REGION_ONE) | |
1242 | ||
1243 | EnumValue | |
1244 | Enum(ira_region) String(all) Value(IRA_REGION_ALL) | |
1245 | ||
1246 | EnumValue | |
1247 | Enum(ira_region) String(mixed) Value(IRA_REGION_MIXED) | |
1248 | ||
1833192f VM |
1249 | fira-loop-pressure |
1250 | Common Report Var(flag_ira_loop_pressure) | |
1251 | Use IRA based register pressure calculation | |
1252 | in RTL loop optimizations. | |
1253 | ||
058e97ec VM |
1254 | fira-share-save-slots |
1255 | Common Report Var(flag_ira_share_save_slots) Init(1) | |
1256 | Share slots for saving different hard registers. | |
1257 | ||
1258 | fira-share-spill-slots | |
1259 | Common Report Var(flag_ira_share_spill_slots) Init(1) | |
1260 | Share stack slots for spilled pseudo-registers. | |
1261 | ||
1262 | fira-verbose= | |
5498f011 | 1263 | Common RejectNegative Joined UInteger Var(flag_ira_verbose) Init(5) |
f94e1d66 | 1264 | -fira-verbose=<number> Control IRA's level of diagnostic messages. |
058e97ec | 1265 | |
8b11a64c | 1266 | fivopts |
c662432e | 1267 | Common Report Var(flag_ivopts) Init(1) Optimization |
8b11a64c ZD |
1268 | Optimize induction variables on trees |
1269 | ||
82c0180d | 1270 | fjump-tables |
c662432e | 1271 | Common Var(flag_jump_tables) Init(1) Optimization |
82c0180d JM |
1272 | Use jump tables for sufficiently large switch statements |
1273 | ||
de32c0cb | 1274 | fkeep-inline-functions |
50431bc4 | 1275 | Common Report Var(flag_keep_inline_functions) |
f3fdaec4 | 1276 | Generate code for functions even if they are fully inlined |
de32c0cb NB |
1277 | |
1278 | fkeep-static-consts | |
50431bc4 | 1279 | Common Report Var(flag_keep_static_consts) Init(1) |
f3fdaec4 | 1280 | Emit static const variables even if they are not used |
de32c0cb | 1281 | |
6ff3a151 | 1282 | fleading-underscore |
50431bc4 | 1283 | Common Report Var(flag_leading_underscore) Init(-1) |
f3fdaec4 | 1284 | Give external symbols a leading underscore |
6ff3a151 | 1285 | |
efa1cdf0 | 1286 | floop-optimize |
2d2bd949 | 1287 | Common Ignore |
c0220ea4 | 1288 | Does nothing. Preserved for backward compatibility. |
efa1cdf0 | 1289 | |
d7f09764 | 1290 | flto |
014d92e1 | 1291 | Common |
d7f09764 DN |
1292 | Enable link-time optimization. |
1293 | ||
014d92e1 JH |
1294 | flto= |
1295 | Common RejectNegative Joined Var(flag_lto) | |
1296 | Link-time optimization with number of parallel jobs or jobserver. | |
1297 | ||
852e4bd2 JH |
1298 | flto-partition=1to1 |
1299 | Common Var(flag_lto_partition_1to1) | |
1300 | Partition functions and vars at linktime based on object files they originate from | |
1301 | ||
1302 | flto-partition=balanced | |
1303 | Common Var(flag_lto_partition_balanced) | |
1304 | Partition functions and vars at linktime into approximately same sized buckets | |
1305 | ||
014d92e1 JH |
1306 | flto-partition=none |
1307 | Common Var(flag_lto_partition_none) | |
1308 | Disable partioning and streaming | |
1309 | ||
d7f09764 DN |
1310 | ; The initial value of -1 comes from Z_DEFAULT_COMPRESSION in zlib.h. |
1311 | flto-compression-level= | |
fcfbd84e | 1312 | Common Joined RejectNegative UInteger Var(flag_lto_compression_level) Init(-1) |
f94e1d66 | 1313 | -flto-compression-level=<number> Use zlib compression level <number> for IL |
d7f09764 DN |
1314 | |
1315 | flto-report | |
1316 | Common Report Var(flag_lto_report) Init(0) Optimization | |
1317 | Report various link-time optimization statistics | |
1318 | ||
6ff3a151 | 1319 | fmath-errno |
ab442df7 | 1320 | Common Report Var(flag_errno_math) Init(1) Optimization |
f3fdaec4 | 1321 | Set errno after built-in math functions |
6ff3a151 | 1322 | |
3a789837 NF |
1323 | fmax-errors= |
1324 | Common Joined RejectNegative UInteger Var(flag_max_errors) | |
1325 | -fmax-errors=<number> Maximum number of errors to report | |
1326 | ||
6ff3a151 | 1327 | fmem-report |
50431bc4 | 1328 | Common Report Var(mem_report) |
f3fdaec4 | 1329 | Report on permanent memory allocation |
6ff3a151 | 1330 | |
31b66477 KC |
1331 | ; This will attempt to merge constant section constants, if 1 only |
1332 | ; string constants and constants from constant pool, if 2 also constant | |
1333 | ; variables. | |
6ff3a151 | 1334 | fmerge-all-constants |
c662432e | 1335 | Common Report Var(flag_merge_constants,2) Init(1) Optimization |
f3fdaec4 | 1336 | Attempt to merge identical constants and constant variables |
6ff3a151 NB |
1337 | |
1338 | fmerge-constants | |
f0036cca | 1339 | Common Report Var(flag_merge_constants,1) Optimization |
f3fdaec4 | 1340 | Attempt to merge identical constants across compilation units |
6ff3a151 | 1341 | |
28a08168 ILT |
1342 | fmerge-debug-strings |
1343 | Common Report Var(flag_merge_debug_strings) Init(1) | |
1344 | Attempt to merge identical debug strings across compilation units | |
1345 | ||
de32c0cb NB |
1346 | fmessage-length= |
1347 | Common RejectNegative Joined UInteger | |
cf03fd63 | 1348 | -fmessage-length=<number> Limit diagnostics to <number> characters per line. 0 suppresses line-wrapping |
de32c0cb | 1349 | |
e5626198 | 1350 | fmodulo-sched |
c662432e | 1351 | Common Report Var(flag_modulo_sched) Optimization |
e5626198 AZ |
1352 | Perform SMS based modulo scheduling before the first scheduling pass |
1353 | ||
517d76fa VY |
1354 | fmodulo-sched-allow-regmoves |
1355 | Common Report Var(flag_modulo_sched_allow_regmoves) | |
1356 | Perform SMS based modulo scheduling with register moves allowed | |
1357 | ||
5e962776 | 1358 | fmove-loop-invariants |
c662432e | 1359 | Common Report Var(flag_move_loop_invariants) Init(1) Optimization |
5e962776 ZD |
1360 | Move loop invariant computations out of loops |
1361 | ||
6de9cd9a | 1362 | fmudflap |
50431bc4 | 1363 | Common RejectNegative Report Var(flag_mudflap) |
c85ce869 | 1364 | Add mudflap bounds-checking instrumentation for single-threaded program |
6de9cd9a DN |
1365 | |
1366 | fmudflapth | |
f0036cca | 1367 | Common RejectNegative Report Var(flag_mudflap,2) |
c85ce869 | 1368 | Add mudflap bounds-checking instrumentation for multi-threaded program |
6de9cd9a DN |
1369 | |
1370 | fmudflapir | |
50431bc4 | 1371 | Common RejectNegative Report Var(flag_mudflap_ignore_reads) |
c85ce869 | 1372 | Ignore read operations when inserting mudflap instrumentation |
6de9cd9a | 1373 | |
6fb5fa3c | 1374 | fdce |
6ae4be32 | 1375 | Common Var(flag_dce) Init(1) Optimization |
6fb5fa3c DB |
1376 | Use the RTL dead code elimination pass |
1377 | ||
1378 | fdse | |
6ae4be32 | 1379 | Common Var(flag_dse) Init(1) Optimization |
6fb5fa3c DB |
1380 | Use the RTL dead store elimination pass |
1381 | ||
d72372e4 | 1382 | freschedule-modulo-scheduled-loops |
c662432e | 1383 | Common Report Var(flag_resched_modulo_sched) Optimization |
d72372e4 MH |
1384 | Enable/Disable the traditional scheduling in loops that already passed modulo scheduling |
1385 | ||
6ff3a151 | 1386 | fnon-call-exceptions |
c662432e | 1387 | Common Report Var(flag_non_call_exceptions) Optimization |
f3fdaec4 | 1388 | Support synchronous non-call exceptions |
6ff3a151 | 1389 | |
de32c0cb | 1390 | fomit-frame-pointer |
c662432e | 1391 | Common Report Var(flag_omit_frame_pointer) Optimization |
f3fdaec4 | 1392 | When possible do not generate stack frames |
de32c0cb | 1393 | |
6ff3a151 | 1394 | foptimize-register-move |
c662432e | 1395 | Common Report Var(flag_regmove) Optimization |
f3fdaec4 | 1396 | Do the full register move optimization pass |
6ff3a151 | 1397 | |
de32c0cb | 1398 | foptimize-sibling-calls |
c662432e | 1399 | Common Report Var(flag_optimize_sibling_calls) Optimization |
f3fdaec4 | 1400 | Optimize sibling and tail recursive calls |
de32c0cb | 1401 | |
3e485f62 JH |
1402 | fpartial-inlining |
1403 | Common Report Var(flag_partial_inlining) | |
1404 | Perform partial inlining | |
1405 | ||
a5573239 JH |
1406 | fpre-ipa-mem-report |
1407 | Common Report Var(pre_ipa_mem_report) | |
1408 | Report on memory allocation before interprocedural optimization | |
1409 | ||
1410 | fpost-ipa-mem-report | |
1411 | Common Report Var(post_ipa_mem_report) | |
1412 | Report on memory allocation before interprocedural optimization | |
1413 | ||
6ff3a151 | 1414 | fpack-struct |
c662432e | 1415 | Common Report Var(flag_pack_struct) Optimization |
f3fdaec4 | 1416 | Pack structure members together without holes |
6ff3a151 | 1417 | |
467cecf3 | 1418 | fpack-struct= |
c662432e | 1419 | Common RejectNegative Joined UInteger Optimization |
467cecf3 JB |
1420 | -fpack-struct=<number> Set initial maximum structure member alignment |
1421 | ||
de32c0cb | 1422 | fpcc-struct-return |
5498f011 | 1423 | Common Report Var(flag_pcc_struct_return,1) Init(DEFAULT_PCC_STRUCT_RETURN) |
f3fdaec4 | 1424 | Return small aggregates in memory, not registers |
de32c0cb NB |
1425 | |
1426 | fpeel-loops | |
c662432e | 1427 | Common Report Var(flag_peel_loops) Optimization |
f3fdaec4 | 1428 | Perform loop peeling |
de32c0cb NB |
1429 | |
1430 | fpeephole | |
c662432e | 1431 | Common Report Var(flag_no_peephole,0) Optimization |
f3fdaec4 | 1432 | Enable machine specific peephole optimizations |
de32c0cb | 1433 | |
6ff3a151 | 1434 | fpeephole2 |
c662432e | 1435 | Common Report Var(flag_peephole2) Optimization |
f3fdaec4 | 1436 | Enable an RTL peephole pass before sched2 |
6ff3a151 | 1437 | |
31b66477 KC |
1438 | fPIC |
1439 | Common Report Var(flag_pic,2) | |
1440 | Generate position-independent code if possible (large mode) | |
1441 | ||
1442 | fPIE | |
1443 | Common Report Var(flag_pie,2) | |
1444 | Generate position-independent code for executables if possible (large mode) | |
1445 | ||
6ff3a151 | 1446 | fpic |
f0036cca | 1447 | Common Report Var(flag_pic,1) |
31b66477 | 1448 | Generate position-independent code if possible (small mode) |
6ff3a151 NB |
1449 | |
1450 | fpie | |
f0036cca | 1451 | Common Report Var(flag_pie,1) |
31b66477 | 1452 | Generate position-independent code for executables if possible (small mode) |
6ff3a151 | 1453 | |
68a607d8 | 1454 | fplugin= |
21bf1558 | 1455 | Common Joined RejectNegative Var(common_deferred_options) Defer |
68a607d8 DN |
1456 | Specify a plugin to load |
1457 | ||
1458 | fplugin-arg- | |
21bf1558 | 1459 | Common Joined RejectNegative Var(common_deferred_options) Defer |
f94e1d66 | 1460 | -fplugin-arg-<name>-<key>[=<value>] Specify argument <key>=<value> for plugin <name> |
68a607d8 | 1461 | |
bbc8a8dc | 1462 | fpredictive-commoning |
6ae4be32 | 1463 | Common Report Var(flag_predictive_commoning) Optimization |
bbc8a8dc ZD |
1464 | Run predictive commoning optimization. |
1465 | ||
de32c0cb | 1466 | fprefetch-loop-arrays |
1fbb509a | 1467 | Common Report Var(flag_prefetch_loop_arrays) Init(-1) Optimization |
f3fdaec4 | 1468 | Generate prefetch instructions, if available, for arrays in loops |
de32c0cb | 1469 | |
6ff3a151 | 1470 | fprofile |
50431bc4 | 1471 | Common Report Var(profile_flag) |
f3fdaec4 | 1472 | Enable basic program profiling code |
6ff3a151 NB |
1473 | |
1474 | fprofile-arcs | |
50431bc4 | 1475 | Common Report Var(profile_arc_flag) |
f3fdaec4 | 1476 | Insert arc-based program profiling code |
6ff3a151 | 1477 | |
2f908293 | 1478 | fprofile-dir= |
0576d21f | 1479 | Common Joined RejectNegative Var(profile_data_prefix) |
2f908293 SP |
1480 | Set the top-level directory for storing the profile data. |
1481 | The default is 'pwd'. | |
1482 | ||
52c76998 PY |
1483 | fprofile-correction |
1484 | Common Report Var(flag_profile_correction) | |
1485 | Enable correction of flow inconsistent profile data input | |
1486 | ||
a8a5f53a JH |
1487 | fprofile-generate |
1488 | Common | |
1489 | Enable common options for generating profile info for profile feedback directed optimizations | |
1490 | ||
2f908293 SP |
1491 | fprofile-generate= |
1492 | Common Joined RejectNegative | |
1493 | Enable common options for generating profile info for profile feedback directed optimizations, and set -fprofile-dir= | |
1494 | ||
a8a5f53a | 1495 | fprofile-use |
2f908293 | 1496 | Common Var(flag_profile_use) |
a8a5f53a JH |
1497 | Enable common options for performing profile feedback directed optimizations |
1498 | ||
2f908293 SP |
1499 | fprofile-use= |
1500 | Common Joined RejectNegative | |
1501 | Enable common options for performing profile feedback directed optimizations, and set -fprofile-dir= | |
1502 | ||
fca9dc00 | 1503 | fprofile-values |
50431bc4 | 1504 | Common Report Var(flag_profile_values) |
fca9dc00 ZD |
1505 | Insert code to profile values of expressions |
1506 | ||
de32c0cb | 1507 | frandom-seed |
299404a1 | 1508 | Common Var(common_deferred_options) Defer |
de32c0cb NB |
1509 | |
1510 | frandom-seed= | |
299404a1 | 1511 | Common Joined RejectNegative Var(common_deferred_options) Defer |
cf03fd63 | 1512 | -frandom-seed=<string> Make compile reproducible using <string> |
de32c0cb | 1513 | |
e0d9d0dd NC |
1514 | ; This switch causes the command line that was used to create an |
1515 | ; object file to be recorded into the object file. The exact format | |
1516 | ; of this recording is target and binary file format dependent. | |
1517 | ; It is related to the -fverbose-asm switch, but that switch only | |
1518 | ; records information in the assembler output file as comments, so | |
1519 | ; they never reach the object file. | |
1520 | frecord-gcc-switches | |
1521 | Common Report Var(flag_record_gcc_switches) | |
1522 | Record gcc command line switches in the object file. | |
1523 | ||
de32c0cb | 1524 | freg-struct-return |
f0036cca | 1525 | Common Report Var(flag_pcc_struct_return,0) Optimization |
f3fdaec4 | 1526 | Return small aggregates in registers |
de32c0cb | 1527 | |
6ff3a151 | 1528 | fregmove |
c662432e | 1529 | Common Report Var(flag_regmove) Optimization |
f3fdaec4 | 1530 | Enables a register move optimization |
6ff3a151 NB |
1531 | |
1532 | frename-registers | |
c662432e | 1533 | Common Report Var(flag_rename_registers) Init(2) Optimization |
f3fdaec4 | 1534 | Perform a register renaming optimization pass |
6ff3a151 NB |
1535 | |
1536 | freorder-blocks | |
c662432e | 1537 | Common Report Var(flag_reorder_blocks) Optimization |
f3fdaec4 | 1538 | Reorder basic blocks to improve code placement |
6ff3a151 | 1539 | |
750054a2 | 1540 | freorder-blocks-and-partition |
c662432e | 1541 | Common Report Var(flag_reorder_blocks_and_partition) Optimization |
750054a2 CT |
1542 | Reorder basic blocks and partition into hot and cold sections |
1543 | ||
6ff3a151 | 1544 | freorder-functions |
c662432e | 1545 | Common Report Var(flag_reorder_functions) Optimization |
f3fdaec4 | 1546 | Reorder functions to improve code placement |
6ff3a151 | 1547 | |
de32c0cb | 1548 | frerun-cse-after-loop |
3020190e | 1549 | Common Report Var(flag_rerun_cse_after_loop) Optimization |
f3fdaec4 | 1550 | Add a common subexpression elimination pass after loop optimizations |
de32c0cb | 1551 | |
efa1cdf0 | 1552 | frerun-loop-opt |
2d2bd949 | 1553 | Common Ignore |
c0220ea4 | 1554 | Does nothing. Preserved for backward compatibility. |
efa1cdf0 | 1555 | |
039c3d42 | 1556 | frounding-math |
c662432e | 1557 | Common Report Var(flag_rounding_math) Optimization |
039c3d42 RS |
1558 | Disable optimizations that assume default FP rounding behavior |
1559 | ||
6ff3a151 | 1560 | fsched-interblock |
c662432e | 1561 | Common Report Var(flag_schedule_interblock) Init(1) Optimization |
f3fdaec4 | 1562 | Enable scheduling across basic blocks |
6ff3a151 | 1563 | |
ce18efcb VM |
1564 | fsched-pressure |
1565 | Common Report Var(flag_sched_pressure) Init(0) Optimization | |
1566 | Enable register pressure sensitive insn scheduling | |
1567 | ||
6ff3a151 | 1568 | fsched-spec |
c662432e | 1569 | Common Report Var(flag_schedule_speculative) Init(1) Optimization |
f3fdaec4 | 1570 | Allow speculative motion of non-loads |
6ff3a151 NB |
1571 | |
1572 | fsched-spec-load | |
c662432e | 1573 | Common Report Var(flag_schedule_speculative_load) Optimization |
f3fdaec4 | 1574 | Allow speculative motion of some loads |
6ff3a151 NB |
1575 | |
1576 | fsched-spec-load-dangerous | |
c662432e | 1577 | Common Report Var(flag_schedule_speculative_load_dangerous) Optimization |
f3fdaec4 | 1578 | Allow speculative motion of more loads |
6ff3a151 | 1579 | |
de32c0cb | 1580 | fsched-verbose= |
299404a1 | 1581 | Common RejectNegative Joined UInteger Var(sched_verbose_param) |
cf03fd63 | 1582 | -fsched-verbose=<number> Set the verbosity level of the scheduler |
de32c0cb | 1583 | |
6ff3a151 | 1584 | fsched2-use-superblocks |
c662432e | 1585 | Common Report Var(flag_sched2_use_superblocks) Optimization |
f3fdaec4 | 1586 | If scheduling post reload, do superblock scheduling |
6ff3a151 NB |
1587 | |
1588 | fsched2-use-traces | |
2d2bd949 | 1589 | Common Ignore |
57257f0d | 1590 | Does nothing. Preserved for backward compatibility. |
6ff3a151 | 1591 | |
de32c0cb | 1592 | fschedule-insns |
c662432e | 1593 | Common Report Var(flag_schedule_insns) Optimization |
f3fdaec4 | 1594 | Reschedule instructions before register allocation |
de32c0cb NB |
1595 | |
1596 | fschedule-insns2 | |
c662432e | 1597 | Common Report Var(flag_schedule_insns_after_reload) Optimization |
f3fdaec4 | 1598 | Reschedule instructions after register allocation |
de32c0cb | 1599 | |
e855c69d AB |
1600 | ; This flag should be on when a target implements non-trivial |
1601 | ; scheduling hooks, maybe saving some information for its own sake. | |
1602 | ; On IA64, for example, this is used for correct bundling. | |
1603 | fselective-scheduling | |
1604 | Common Report Var(flag_selective_scheduling) Optimization | |
1605 | Schedule instructions using selective scheduling algorithm | |
1606 | ||
1607 | fselective-scheduling2 | |
1608 | Common Report Var(flag_selective_scheduling2) Optimization | |
1609 | Run selective scheduling after reload | |
1610 | ||
1611 | fsel-sched-pipelining | |
1612 | Common Report Var(flag_sel_sched_pipelining) Init(0) Optimization | |
1613 | Perform software pipelining of inner loops during selective scheduling | |
1614 | ||
1615 | fsel-sched-pipelining-outer-loops | |
1616 | Common Report Var(flag_sel_sched_pipelining_outer_loops) Init(0) Optimization | |
1617 | Perform software pipelining of outer loops during selective scheduling | |
1618 | ||
1619 | fsel-sched-reschedule-pipelined | |
1620 | Common Report Var(flag_sel_sched_reschedule_pipelined) Init(0) Optimization | |
1621 | Reschedule pipelined regions without pipelining | |
1622 | ||
31b66477 KC |
1623 | ; sched_stalled_insns means that insns can be moved prematurely from the queue |
1624 | ; of stalled insns into the ready list. | |
569fa502 | 1625 | fsched-stalled-insns |
ab442df7 | 1626 | Common Report Var(flag_sched_stalled_insns) Optimization UInteger |
569fa502 DN |
1627 | Allow premature scheduling of queued insns |
1628 | ||
1629 | fsched-stalled-insns= | |
c22cacf3 | 1630 | Common RejectNegative Joined UInteger |
4e994432 | 1631 | -fsched-stalled-insns=<number> Set number of queued insns that can be prematurely scheduled |
569fa502 | 1632 | |
31b66477 KC |
1633 | ; sched_stalled_insns_dep controls how many recently scheduled cycles will |
1634 | ; be examined for a dependency on a stalled insn that is candidate for | |
1635 | ; premature removal from the queue of stalled insns into the ready list (has | |
1636 | ; an effect only if the flag 'sched_stalled_insns' is set). | |
569fa502 | 1637 | fsched-stalled-insns-dep |
ab442df7 | 1638 | Common Report Var(flag_sched_stalled_insns_dep,1) Init(1) Optimization UInteger |
569fa502 DN |
1639 | Set dependence distance checking in premature scheduling of queued insns |
1640 | ||
1641 | fsched-stalled-insns-dep= | |
1642 | Common RejectNegative Joined UInteger | |
4e994432 | 1643 | -fsched-stalled-insns-dep=<number> Set dependence distance checking in premature scheduling of queued insns |
569fa502 | 1644 | |
ee4764a8 GS |
1645 | fsched-group-heuristic |
1646 | Common Report Var(flag_sched_group_heuristic) Init(1) Optimization | |
1647 | Enable the group heuristic in the scheduler | |
1648 | ||
1649 | fsched-critical-path-heuristic | |
1650 | Common Report Var(flag_sched_critical_path_heuristic) Init(1) Optimization | |
1651 | Enable the critical path heuristic in the scheduler | |
1652 | ||
1653 | fsched-spec-insn-heuristic | |
1654 | Common Report Var(flag_sched_spec_insn_heuristic) Init(1) Optimization | |
1655 | Enable the speculative instruction heuristic in the scheduler | |
1656 | ||
ee4764a8 GS |
1657 | fsched-rank-heuristic |
1658 | Common Report Var(flag_sched_rank_heuristic) Init(1) Optimization | |
1659 | Enable the rank heuristic in the scheduler | |
1660 | ||
1661 | fsched-last-insn-heuristic | |
1662 | Common Report Var(flag_sched_last_insn_heuristic) Init(1) Optimization | |
1663 | Enable the last instruction heuristic in the scheduler | |
1664 | ||
1665 | fsched-dep-count-heuristic | |
1666 | Common Report Var(flag_sched_dep_count_heuristic) Init(1) Optimization | |
1667 | Enable the dependent count heuristic in the scheduler | |
1668 | ||
aacd3885 | 1669 | fsection-anchors |
c662432e | 1670 | Common Report Var(flag_section_anchors) Optimization |
aacd3885 RS |
1671 | Access data in the same section from shared anchor points |
1672 | ||
8cd37d0b | 1673 | fsee |
2d2bd949 | 1674 | Common Ignore |
8393a9c8 | 1675 | Does nothing. Preserved for backward compatibility. |
8cd37d0b | 1676 | |
87a0ebfd ST |
1677 | fzee |
1678 | Common Report Var(flag_zee) Init(0) | |
1679 | Eliminate redundant zero extensions on targets that support implicit extensions. | |
1680 | ||
8abb6b22 | 1681 | fshow-column |
1cb42611 | 1682 | Common Report Var(flag_show_column) Init(1) |
e74fe492 | 1683 | Show column numbers in diagnostics, when available. Default on |
8abb6b22 | 1684 | |
6ff3a151 | 1685 | fsignaling-nans |
c662432e | 1686 | Common Report Var(flag_signaling_nans) Optimization |
f3fdaec4 | 1687 | Disable optimizations observable by IEEE signaling NaNs |
6ff3a151 | 1688 | |
db02da79 | 1689 | fsigned-zeros |
21af5cdf | 1690 | Common Report Var(flag_signed_zeros) Init(1) Optimization |
db02da79 RS |
1691 | Disable floating point optimizations that ignore the IEEE signedness of zero |
1692 | ||
6ff3a151 | 1693 | fsingle-precision-constant |
c662432e | 1694 | Common Report Var(flag_single_precision_constant) Optimization |
f3fdaec4 | 1695 | Convert floating point constants to single precision constants |
6ff3a151 | 1696 | |
113d659a | 1697 | fsplit-ivs-in-unroller |
c662432e | 1698 | Common Report Var(flag_split_ivs_in_unroller) Init(1) Optimization |
c85ce869 | 1699 | Split lifetimes of induction variables when loops are unrolled |
113d659a | 1700 | |
7458026b ILT |
1701 | fsplit-stack |
1702 | Common Report Var(flag_split_stack) Init(-1) | |
1703 | Generate discontiguous stack frames | |
1704 | ||
e53a16e7 | 1705 | fsplit-wide-types |
21af5cdf | 1706 | Common Report Var(flag_split_wide_types) Optimization |
e53a16e7 ILT |
1707 | Split wide types into independent registers |
1708 | ||
f37a4f14 | 1709 | fvariable-expansion-in-unroller |
c662432e | 1710 | Common Report Var(flag_variable_expansion_in_unroller) Optimization |
c85ce869 | 1711 | Apply variable expansion when loops are unrolled |
f37a4f14 | 1712 | |
b38f3813 EB |
1713 | fstack-check= |
1714 | Common Report RejectNegative Joined | |
1715 | -fstack-check=[no|generic|specific] Insert stack checking code into the program | |
1716 | ||
6ff3a151 | 1717 | fstack-check |
5de8299c | 1718 | Common Alias(fstack-check=, specific, no) |
b38f3813 | 1719 | Insert stack checking code into the program. Same as -fstack-check=specific |
6ff3a151 | 1720 | |
de32c0cb | 1721 | fstack-limit |
21bf1558 | 1722 | Common Var(common_deferred_options) Defer |
de32c0cb | 1723 | |
058de654 | 1724 | fstack-limit-register= |
21bf1558 | 1725 | Common RejectNegative Joined Var(common_deferred_options) Defer |
cf03fd63 | 1726 | -fstack-limit-register=<register> Trap if the stack goes past <register> |
058de654 NB |
1727 | |
1728 | fstack-limit-symbol= | |
21bf1558 | 1729 | Common RejectNegative Joined Var(common_deferred_options) Defer |
cf03fd63 | 1730 | -fstack-limit-symbol=<name> Trap if the stack goes past symbol <name> |
058de654 | 1731 | |
7d69de61 RH |
1732 | fstack-protector |
1733 | Common Report Var(flag_stack_protect, 1) | |
1734 | Use propolice as a stack protection method | |
1735 | ||
1736 | fstack-protector-all | |
f0036cca | 1737 | Common Report RejectNegative Var(flag_stack_protect, 2) |
7d69de61 RH |
1738 | Use a stack protection method for every function |
1739 | ||
d3c12306 EB |
1740 | fstack-usage |
1741 | Common RejectNegative Var(flag_stack_usage) | |
1742 | Output stack usage information on a per-function basis | |
1743 | ||
de32c0cb | 1744 | fstrength-reduce |
2d2bd949 | 1745 | Common Ignore |
c0220ea4 | 1746 | Does nothing. Preserved for backward compatibility. |
de32c0cb | 1747 | |
31b66477 KC |
1748 | ; Nonzero if we should do (language-dependent) alias analysis. |
1749 | ; Typically, this analysis will assume that expressions of certain | |
1750 | ; types do not alias expressions of certain other types. Only used | |
1751 | ; if alias analysis (in general) is enabled. | |
6ff3a151 | 1752 | fstrict-aliasing |
c662432e | 1753 | Common Report Var(flag_strict_aliasing) Optimization |
f3fdaec4 | 1754 | Assume strict aliasing rules apply |
6ff3a151 | 1755 | |
eeef0e45 ILT |
1756 | fstrict-overflow |
1757 | Common Report Var(flag_strict_overflow) | |
1758 | Treat signed overflow as undefined | |
1759 | ||
de32c0cb | 1760 | fsyntax-only |
50431bc4 | 1761 | Common Report Var(flag_syntax_only) |
f3fdaec4 | 1762 | Check for syntax errors, then stop |
de32c0cb | 1763 | |
6ff3a151 | 1764 | ftest-coverage |
50431bc4 | 1765 | Common Report Var(flag_test_coverage) |
f3fdaec4 | 1766 | Create data files needed by \"gcov\" |
6ff3a151 | 1767 | |
de32c0cb | 1768 | fthread-jumps |
c662432e | 1769 | Common Report Var(flag_thread_jumps) Optimization |
f3fdaec4 | 1770 | Perform jump threading optimizations |
de32c0cb | 1771 | |
6ff3a151 | 1772 | ftime-report |
50431bc4 | 1773 | Common Report Var(time_report) |
f3fdaec4 | 1774 | Report the time taken by each compiler pass |
6ff3a151 | 1775 | |
058de654 | 1776 | ftls-model= |
e6d4b984 | 1777 | Common Joined RejectNegative Enum(tls_model) Var(flag_tls_default) Init(TLS_MODEL_GLOBAL_DYNAMIC) |
cf03fd63 | 1778 | -ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec] Set the default thread-local storage code generation model |
058de654 | 1779 | |
e6d4b984 JM |
1780 | Enum |
1781 | Name(tls_model) Type(enum tls_model) UnknownError(unknown TLS model %qs) | |
1782 | ||
1783 | EnumValue | |
1784 | Enum(tls_model) String(global-dynamic) Value(TLS_MODEL_GLOBAL_DYNAMIC) | |
1785 | ||
1786 | EnumValue | |
1787 | Enum(tls_model) String(local-dynamic) Value(TLS_MODEL_LOCAL_DYNAMIC) | |
1788 | ||
1789 | EnumValue | |
1790 | Enum(tls_model) String(initial-exec) Value(TLS_MODEL_INITIAL_EXEC) | |
1791 | ||
1792 | EnumValue | |
1793 | Enum(tls_model) String(local-exec) Value(TLS_MODEL_LOCAL_EXEC) | |
1794 | ||
474eccc6 | 1795 | ftoplevel-reorder |
d6cc6ec9 | 1796 | Common Report Var(flag_toplevel_reorder) Init(2) Optimization |
474eccc6 ILT |
1797 | Reorder top level functions, variables, and asms |
1798 | ||
de32c0cb | 1799 | ftracer |
50431bc4 | 1800 | Common Report Var(flag_tracer) |
f3fdaec4 | 1801 | Perform superblock formation via tail duplication |
de32c0cb | 1802 | |
31b66477 KC |
1803 | ; Zero means that floating-point math operations cannot generate a |
1804 | ; (user-visible) trap. This is the case, for example, in nonstop | |
1805 | ; IEEE 754 arithmetic. | |
6ff3a151 | 1806 | ftrapping-math |
c662432e | 1807 | Common Report Var(flag_trapping_math) Init(1) Optimization |
f3fdaec4 | 1808 | Assume floating-point operations can trap |
6ff3a151 NB |
1809 | |
1810 | ftrapv | |
c662432e | 1811 | Common Report Var(flag_trapv) Optimization |
f3fdaec4 | 1812 | Trap for signed overflow in addition, subtraction and multiplication |
6ff3a151 | 1813 | |
6de9cd9a | 1814 | ftree-ccp |
c662432e | 1815 | Common Report Var(flag_tree_ccp) Optimization |
6de9cd9a DN |
1816 | Enable SSA-CCP optimization on trees |
1817 | ||
0b4b14ac RG |
1818 | ftree-bit-ccp |
1819 | Common Report Var(flag_tree_bit_ccp) Optimization | |
1820 | Enable SSA-BIT-CCP optimization on trees | |
1821 | ||
0bca51f0 | 1822 | ftree-store-ccp |
2d2bd949 | 1823 | Common Ignore |
dce2b2f6 | 1824 | Does nothing. Preserved for backward compatibility. |
0bca51f0 | 1825 | |
6de9cd9a | 1826 | ftree-ch |
c662432e | 1827 | Common Report Var(flag_tree_ch) Optimization |
6de9cd9a DN |
1828 | Enable loop header copying on trees |
1829 | ||
6de9cd9a | 1830 | ftree-copyrename |
c662432e | 1831 | Common Report Var(flag_tree_copyrename) Optimization |
c85ce869 | 1832 | Replace SSA temporaries with better names in copies |
6de9cd9a | 1833 | |
0bca51f0 | 1834 | ftree-copy-prop |
c662432e | 1835 | Common Report Var(flag_tree_copy_prop) Optimization |
0bca51f0 DN |
1836 | Enable copy propagation on trees |
1837 | ||
1838 | ftree-store-copy-prop | |
2d2bd949 | 1839 | Common Ignore |
e9033855 | 1840 | Does nothing. Preserved for backward compatibility. |
0bca51f0 | 1841 | |
a5828d1e MM |
1842 | ftree-cselim |
1843 | Common Report Var(flag_tree_cselim) Init(2) Optimization | |
1844 | Transform condition stores into unconditional ones | |
1845 | ||
b6e99746 MJ |
1846 | ftree-switch-conversion |
1847 | Common Report Var(flag_tree_switch_conversion) Optimization | |
1848 | Perform conversions of switch initializations. | |
1849 | ||
6de9cd9a | 1850 | ftree-dce |
c662432e | 1851 | Common Report Var(flag_tree_dce) Optimization |
6de9cd9a DN |
1852 | Enable SSA dead code elimination optimization on trees |
1853 | ||
1854 | ftree-dominator-opts | |
c662432e | 1855 | Common Report Var(flag_tree_dom) Optimization |
6de9cd9a DN |
1856 | Enable dominator optimizations |
1857 | ||
1858 | ftree-dse | |
c662432e | 1859 | Common Report Var(flag_tree_dse) Optimization |
6de9cd9a DN |
1860 | Enable dead store elimination |
1861 | ||
248fc9f3 RG |
1862 | ftree-forwprop |
1863 | Common Report Var(flag_tree_forwprop) Init(1) Optimization | |
1864 | Enable forward propagation on trees | |
1865 | ||
ff2ad0f7 | 1866 | ftree-fre |
c662432e | 1867 | Common Report Var(flag_tree_fre) Optimization |
ff2ad0f7 DN |
1868 | Enable Full Redundancy Elimination (FRE) on trees |
1869 | ||
dea61d92 | 1870 | ftree-loop-distribution |
53ed2f0e | 1871 | Common Report Var(flag_tree_loop_distribution) Optimization |
dea61d92 SP |
1872 | Enable loop distribution on trees |
1873 | ||
20769d5e SP |
1874 | ftree-loop-distribute-patterns |
1875 | Common Report Var(flag_tree_loop_distribute_patterns) Optimization | |
1876 | Enable loop distribution for patterns transformed into a library call | |
1877 | ||
1b08d87d | 1878 | ftree-loop-im |
c662432e | 1879 | Common Report Var(flag_tree_loop_im) Init(1) Optimization |
a7e5372d ZD |
1880 | Enable loop invariant motion on trees |
1881 | ||
599eabdb | 1882 | ftree-loop-linear |
c662432e | 1883 | Common Report Var(flag_tree_loop_linear) Optimization |
599eabdb DB |
1884 | Enable linear loop transforms on trees |
1885 | ||
1b08d87d | 1886 | ftree-loop-ivcanon |
c662432e | 1887 | Common Report Var(flag_tree_loop_ivcanon) Init(1) Optimization |
1b08d87d DB |
1888 | Create canonical induction variables in loops |
1889 | ||
c66b6c66 | 1890 | ftree-loop-optimize |
c662432e | 1891 | Common Report Var(flag_tree_loop_optimize) Init(1) Optimization |
c66b6c66 ZD |
1892 | Enable loop optimizations on tree level |
1893 | ||
5f40b3cb | 1894 | ftree-parallelize-loops= |
fcfbd84e | 1895 | Common Report Joined RejectNegative UInteger Var(flag_tree_parallelize_loops) Init(1) |
5f40b3cb ZD |
1896 | Enable automatic parallelization of loops |
1897 | ||
248fc9f3 RG |
1898 | ftree-phiprop |
1899 | Common Report Var(flag_tree_phiprop) Init(1) Optimization | |
1900 | Enable hoisting loads from conditional pointers. | |
1901 | ||
6de9cd9a | 1902 | ftree-pre |
c662432e | 1903 | Common Report Var(flag_tree_pre) Optimization |
6de9cd9a DN |
1904 | Enable SSA-PRE optimization on trees |
1905 | ||
248fc9f3 RG |
1906 | ftree-pta |
1907 | Common Report Var(flag_tree_pta) Init(1) Optimization | |
1908 | Perform function-local points-to analysis on trees. | |
1909 | ||
13c59415 UB |
1910 | ftree-reassoc |
1911 | Common Report Var(flag_tree_reassoc) Init(1) Optimization | |
1912 | Enable reassociation on tree level | |
1913 | ||
c75ab022 | 1914 | ftree-salias |
2d2bd949 | 1915 | Common Ignore |
1353232d | 1916 | Does nothing. Preserved for backward compatibility. |
c75ab022 | 1917 | |
fa555252 | 1918 | ftree-sink |
c662432e | 1919 | Common Report Var(flag_tree_sink) Optimization |
fa555252 DB |
1920 | Enable SSA code sinking on trees |
1921 | ||
6de9cd9a | 1922 | ftree-sra |
c662432e | 1923 | Common Report Var(flag_tree_sra) Optimization |
6de9cd9a DN |
1924 | Perform scalar replacement of aggregates |
1925 | ||
1926 | ftree-ter | |
3020190e | 1927 | Common Report Var(flag_tree_ter) Optimization |
6de9cd9a DN |
1928 | Replace temporary expressions in the SSA->normal pass |
1929 | ||
c662432e NC |
1930 | ftree-lrs |
1931 | Common Report Var(flag_tree_live_range_split) Optimization | |
1932 | Perform live range splitting during the SSA->normal pass | |
1933 | ||
0bca51f0 | 1934 | ftree-vrp |
c662432e | 1935 | Common Report Var(flag_tree_vrp) Init(0) Optimization |
0bca51f0 DN |
1936 | Perform Value Range Propagation on trees |
1937 | ||
de32c0cb | 1938 | funit-at-a-time |
d6cc6ec9 | 1939 | Common Report Var(flag_unit_at_a_time) Init(1) Optimization |
f3fdaec4 | 1940 | Compile whole compilation unit at a time |
de32c0cb NB |
1941 | |
1942 | funroll-loops | |
c662432e | 1943 | Common Report Var(flag_unroll_loops) Optimization |
f3fdaec4 | 1944 | Perform loop unrolling when iteration count is known |
de32c0cb NB |
1945 | |
1946 | funroll-all-loops | |
c662432e | 1947 | Common Report Var(flag_unroll_all_loops) Optimization |
f3fdaec4 | 1948 | Perform loop unrolling for all loops |
de32c0cb | 1949 | |
f9cc1a70 PB |
1950 | ; Nonzero means that loop optimizer may assume that the induction variables |
1951 | ; that control loops do not overflow and that the loops with nontrivial | |
1952 | ; exit condition are not infinite | |
1953 | funsafe-loop-optimizations | |
c662432e | 1954 | Common Report Var(flag_unsafe_loop_optimizations) Optimization |
f9cc1a70 PB |
1955 | Allow loop optimizations to assume that the loops behave in normal way |
1956 | ||
a1a82611 RE |
1957 | fassociative-math |
1958 | Common Report Var(flag_associative_math) | |
1959 | Allow optimization for floating-point arithmetic which may change the | |
1960 | result of the operation due to rounding. | |
1961 | ||
1962 | freciprocal-math | |
1963 | Common Report Var(flag_reciprocal_math) | |
1964 | Same as -fassociative-math for expressions which include division. | |
1965 | ||
31b66477 KC |
1966 | ; Nonzero means that unsafe floating-point math optimizations are allowed |
1967 | ; for the sake of speed. IEEE compliance is not guaranteed, and operations | |
1968 | ; are allowed to assume that their arguments and results are "normal" | |
1969 | ; (e.g., nonnegative for SQRT). | |
6ff3a151 | 1970 | funsafe-math-optimizations |
c662432e | 1971 | Common Report Var(flag_unsafe_math_optimizations) Optimization |
f3fdaec4 | 1972 | Allow math optimizations that may violate IEEE or ISO standards |
6ff3a151 | 1973 | |
de32c0cb | 1974 | funswitch-loops |
c662432e | 1975 | Common Report Var(flag_unswitch_loops) Optimization |
f3fdaec4 | 1976 | Perform loop unswitching |
de32c0cb | 1977 | |
6ff3a151 | 1978 | funwind-tables |
c662432e | 1979 | Common Report Var(flag_unwind_tables) Optimization |
f3fdaec4 | 1980 | Just generate unwind tables for exception handling |
6ff3a151 | 1981 | |
da18ea94 RAE |
1982 | fuse-linker-plugin |
1983 | Common Undocumented | |
1984 | ||
e90afde6 JM |
1985 | ; Positive if we should track variables, negative if we should run |
1986 | ; the var-tracking pass only to discard debug annotations, zero if | |
1987 | ; we're not to run it. When flag_var_tracking == 2 (AUTODETECT_VALUE) it | |
1988 | ; will be set according to optimize, debug_info_level and debug_hooks | |
1989 | ; in process_options (). | |
014a1138 | 1990 | fvar-tracking |
e90afde6 | 1991 | Common Report Var(flag_var_tracking) Init(2) Optimization |
014a1138 JZ |
1992 | Perform variable tracking |
1993 | ||
e90afde6 JM |
1994 | ; Positive if we should track variables at assignments, negative if |
1995 | ; we should run the var-tracking pass only to discard debug | |
1996 | ; annotations. When flag_var_tracking_assignments == | |
1997 | ; AUTODETECT_VALUE it will be set according to flag_var_tracking. | |
b5b8b0ac | 1998 | fvar-tracking-assignments |
e90afde6 | 1999 | Common Report Var(flag_var_tracking_assignments) Init(2) Optimization |
b5b8b0ac AO |
2000 | Perform variable tracking by annotating assignments |
2001 | ||
e90afde6 JM |
2002 | ; Nonzero if we should toggle flag_var_tracking_assignments after |
2003 | ; processing options and computing its default. */ | |
b5b8b0ac | 2004 | fvar-tracking-assignments-toggle |
e90afde6 | 2005 | Common Report Var(flag_var_tracking_assignments_toggle) Optimization |
b5b8b0ac AO |
2006 | Toggle -fvar-tracking-assignments |
2007 | ||
62760ffd CT |
2008 | fvar-tracking-uninit |
2009 | Common Report Var(flag_var_tracking_uninit) Optimization | |
2010 | Perform variable tracking and also tag variables that are uninitialized | |
2011 | ||
79fe1b3b | 2012 | ftree-vectorize |
c662432e | 2013 | Common Report Var(flag_tree_vectorize) Optimization |
79fe1b3b DN |
2014 | Enable loop vectorization on trees |
2015 | ||
a70d6342 IR |
2016 | ftree-slp-vectorize |
2017 | Common Report Var(flag_tree_slp_vectorize) Init(2) Optimization | |
2018 | Enable basic block vectorization (SLP) on trees | |
2019 | ||
792ed98b HJ |
2020 | fvect-cost-model |
2021 | Common Report Var(flag_vect_cost_model) Optimization | |
2022 | Enable use of cost model in vectorization | |
2023 | ||
c12cc930 | 2024 | ftree-vect-loop-version |
c662432e | 2025 | Common Report Var(flag_tree_vect_loop_version) Init(1) Optimization |
c12cc930 KB |
2026 | Enable loop versioning when doing loop vectorization on trees |
2027 | ||
c866976a | 2028 | ftree-vectorizer-verbose= |
7cd23050 | 2029 | Common RejectNegative Joined UInteger |
4e994432 | 2030 | -ftree-vectorizer-verbose=<number> Set the verbosity level of the vectorizer |
c866976a | 2031 | |
fbf798fc | 2032 | ftree-scev-cprop |
21af5cdf | 2033 | Common Report Var(flag_tree_scev_cprop) Init(1) Optimization |
fbf798fc DN |
2034 | Enable copy propagation of scalar-evolution information. |
2035 | ||
31b66477 KC |
2036 | ; -fverbose-asm causes extra commentary information to be produced in |
2037 | ; the generated assembly code (to make it more readable). This option | |
2038 | ; is generally only of use to those who actually need to read the | |
2039 | ; generated assembly code (perhaps while debugging the compiler itself). | |
2040 | ; -fno-verbose-asm, the default, causes the extra information | |
2041 | ; to not be added and is useful when comparing two assembler files. | |
6ff3a151 | 2042 | fverbose-asm |
50431bc4 | 2043 | Common Report Var(flag_verbose_asm) |
f3fdaec4 | 2044 | Add extra commentary to assembler output |
6ff3a151 | 2045 | |
d7afec4b | 2046 | fvisibility= |
e6d4b984 | 2047 | Common Joined RejectNegative Enum(symbol_visibility) Var(default_visibility) Init(VISIBILITY_DEFAULT) |
d7afec4b ND |
2048 | -fvisibility=[default|internal|hidden|protected] Set the default symbol visibility |
2049 | ||
e6d4b984 JM |
2050 | Enum |
2051 | Name(symbol_visibility) Type(enum symbol_visibility) UnknownError(unrecognized visibility value %qs) | |
2052 | ||
2053 | EnumValue | |
2054 | Enum(symbol_visibility) String(default) Value(VISIBILITY_DEFAULT) | |
2055 | ||
2056 | EnumValue | |
2057 | Enum(symbol_visibility) String(internal) Value(VISIBILITY_INTERNAL) | |
2058 | ||
2059 | EnumValue | |
2060 | Enum(symbol_visibility) String(hidden) Value(VISIBILITY_HIDDEN) | |
2061 | ||
2062 | EnumValue | |
2063 | Enum(symbol_visibility) String(protected) Value(VISIBILITY_PROTECTED) | |
d7afec4b | 2064 | |
fca9dc00 | 2065 | fvpt |
c662432e | 2066 | Common Report Var(flag_value_profile_transformations) Optimization |
fca9dc00 ZD |
2067 | Use expression value profiles in optimizations |
2068 | ||
62551c66 | 2069 | fweb |
c662432e | 2070 | Common Report Var(flag_web) Init(2) Optimization |
62551c66 JH |
2071 | Construct webs and split unrelated uses of single variable |
2072 | ||
c2699190 XDL |
2073 | ftree-builtin-call-dce |
2074 | Common Report Var(flag_tree_builtin_call_dce) Init(0) Optimization | |
2075 | Enable conditional dead code elimination for builtin calls | |
2076 | ||
ce91e74c | 2077 | fwhole-program |
c662432e | 2078 | Common Report Var(flag_whole_program) Init(0) Optimization |
ce91e74c JH |
2079 | Perform whole program optimizations |
2080 | ||
6ff3a151 | 2081 | fwrapv |
c662432e | 2082 | Common Report Var(flag_wrapv) Optimization |
f3fdaec4 | 2083 | Assume signed arithmetic overflow wraps around |
6ff3a151 | 2084 | |
6ff3a151 | 2085 | fzero-initialized-in-bss |
50431bc4 | 2086 | Common Report Var(flag_zero_initialized_in_bss) Init(1) |
f3fdaec4 | 2087 | Put zero initialized data in the bss section |
6ff3a151 | 2088 | |
e01cc6dc NB |
2089 | g |
2090 | Common JoinedOrMissing | |
df38ffef NB |
2091 | Generate debug information in default format |
2092 | ||
2093 | gcoff | |
53b2323e | 2094 | Common JoinedOrMissing Negative(gdwarf-) |
df38ffef NB |
2095 | Generate debug information in COFF format |
2096 | ||
53b2323e RH |
2097 | gdwarf- |
2098 | Common Joined UInteger Var(dwarf_version) Init(2) Negative(gstabs) | |
2099 | Generate debug information in DWARF v2 (or later) format | |
df38ffef NB |
2100 | |
2101 | ggdb | |
2102 | Common JoinedOrMissing | |
2103 | Generate debug information in default extended format | |
2104 | ||
2105 | gstabs | |
14c7833c | 2106 | Common JoinedOrMissing Negative(gstabs+) |
df38ffef NB |
2107 | Generate debug information in STABS format |
2108 | ||
2109 | gstabs+ | |
14c7833c | 2110 | Common JoinedOrMissing Negative(gvms) |
df38ffef NB |
2111 | Generate debug information in extended STABS format |
2112 | ||
65f753a0 | 2113 | gno-strict-dwarf |
047a3193 | 2114 | Common RejectNegative Var(dwarf_strict,0) Init(-1) |
65f753a0 JJ |
2115 | Emit DWARF additions beyond selected version |
2116 | ||
2117 | gstrict-dwarf | |
f0036cca | 2118 | Common Report RejectNegative Var(dwarf_strict,1) |
65f753a0 JJ |
2119 | Don't emit DWARF additions beyond selected version |
2120 | ||
2153915d AO |
2121 | gtoggle |
2122 | Common Report Var(flag_gtoggle) | |
2123 | Toggle debug information generation | |
2124 | ||
df38ffef | 2125 | gvms |
14c7833c | 2126 | Common JoinedOrMissing Negative(gxcoff) |
df38ffef NB |
2127 | Generate debug information in VMS format |
2128 | ||
2129 | gxcoff | |
14c7833c | 2130 | Common JoinedOrMissing Negative(gxcoff+) |
df38ffef NB |
2131 | Generate debug information in XCOFF format |
2132 | ||
2133 | gxcoff+ | |
14c7833c | 2134 | Common JoinedOrMissing Negative(gcoff) |
df38ffef | 2135 | Generate debug information in extended XCOFF format |
e01cc6dc | 2136 | |
6d721f67 JM |
2137 | h |
2138 | Driver Joined Separate | |
2139 | ||
4adbd5dd MK |
2140 | iplugindir= |
2141 | Common Joined Var(plugindir_string) Init(0) | |
2142 | -iplugindir=<dir> Set <dir> to be the default plugin directory | |
2143 | ||
603349bf JM |
2144 | l |
2145 | Driver Joined Separate | |
2146 | ||
2147 | no-canonical-prefixes | |
2148 | Driver | |
2149 | ||
d9d16a19 JM |
2150 | nodefaultlibs |
2151 | Driver | |
2152 | ||
2153 | nostdlib | |
2154 | Driver | |
2155 | ||
d185d268 | 2156 | o |
d5478783 | 2157 | Common Driver Joined Separate Var(asm_file_name) MissingArgError(missing filename after %qs) |
cf03fd63 | 2158 | -o <file> Place output into <file> |
d185d268 NB |
2159 | |
2160 | p | |
50431bc4 | 2161 | Common Var(profile_flag) |
cf03fd63 | 2162 | Enable function profiling |
d185d268 | 2163 | |
603349bf JM |
2164 | pass-exit-codes |
2165 | Driver Var(pass_exit_codes) | |
2166 | ||
d185d268 | 2167 | pedantic |
50431bc4 | 2168 | Common Var(pedantic) |
cf03fd63 | 2169 | Issue warnings needed for strict compliance to the standard |
d185d268 NB |
2170 | |
2171 | pedantic-errors | |
d5478783 | 2172 | Common Var(flag_pedantic_errors) |
cf03fd63 | 2173 | Like -pedantic but issue them as errors |
d185d268 | 2174 | |
d9d16a19 JM |
2175 | pg |
2176 | Driver | |
2177 | ||
603349bf JM |
2178 | pipe |
2179 | Driver Var(use_pipes) | |
2180 | ||
2181 | print-file-name= | |
2182 | Driver JoinedOrMissing Var(print_file_name) | |
2183 | ||
2184 | print-libgcc-file-name | |
2185 | Driver | |
2186 | ||
2187 | print-multi-directory | |
2188 | Driver Var(print_multi_directory) | |
2189 | ||
2190 | print-multi-lib | |
2191 | Driver Var(print_multi_lib) | |
2192 | ||
2193 | print-multi-os-directory | |
2194 | Driver Var(print_multi_os_directory) | |
2195 | ||
2196 | print-prog-name= | |
2197 | Driver JoinedOrMissing Var(print_prog_name) | |
2198 | ||
2199 | print-search-dirs | |
2200 | Driver Var(print_search_dirs) | |
2201 | ||
2202 | print-sysroot | |
2203 | Driver Var(print_sysroot) | |
2204 | ||
2205 | print-sysroot-headers-suffix | |
2206 | Driver Var(print_sysroot_headers_suffix) | |
2207 | ||
d7b42618 | 2208 | quiet |
603349bf | 2209 | Common Var(quiet_flag) RejectDriver |
cf03fd63 | 2210 | Do not display functions compiled or elapsed time |
d7b42618 | 2211 | |
603349bf JM |
2212 | save-temps |
2213 | Driver | |
2214 | ||
2215 | save-temps= | |
2216 | Driver Joined | |
2217 | ||
2218 | time | |
2219 | Driver Var(report_times) | |
2220 | ||
2221 | time= | |
2222 | Driver JoinedOrMissing | |
2223 | ||
e200444e JM |
2224 | u |
2225 | Driver Joined Separate | |
2226 | ||
5642f5d5 JM |
2227 | undef |
2228 | Driver | |
2229 | ; C option, but driver must not handle as "-u ndef". | |
2230 | ||
603349bf | 2231 | v |
d5478783 JM |
2232 | Common Driver Var(verbose_flag) |
2233 | Enable verbose output | |
603349bf | 2234 | |
d185d268 | 2235 | version |
603349bf | 2236 | Common Var(version_flag) RejectDriver |
cf03fd63 | 2237 | Display the compiler's version |
d185d268 NB |
2238 | |
2239 | w | |
50431bc4 | 2240 | Common Var(inhibit_warnings) |
cf03fd63 | 2241 | Suppress warnings |
d185d268 | 2242 | |
603349bf JM |
2243 | wrapper |
2244 | Driver Separate Var(wrapper_string) | |
2245 | ||
2246 | x | |
2247 | Driver Joined Separate | |
2248 | ||
528dc603 L |
2249 | shared |
2250 | Common RejectNegative Negative(pie) | |
2251 | Create a shared library | |
2252 | ||
603349bf JM |
2253 | shared-libgcc |
2254 | Driver | |
2255 | ||
2256 | specs | |
5de8299c | 2257 | Driver Separate Alias(specs=) |
603349bf JM |
2258 | |
2259 | specs= | |
2260 | Driver Joined | |
2261 | ||
d9d16a19 JM |
2262 | static |
2263 | Driver | |
2264 | ||
603349bf JM |
2265 | static-libgcc |
2266 | Driver | |
2267 | ||
2268 | static-libgfortran | |
2269 | Driver | |
2270 | ; Documented for Fortran, but always accepted by driver. | |
2271 | ||
2272 | static-libstdc++ | |
2273 | Driver | |
2274 | ||
7a938933 ILT |
2275 | static-libgo |
2276 | Driver | |
2277 | ; Documented for Go, but always accepted by driver. | |
2278 | ||
e200444e JM |
2279 | symbolic |
2280 | Driver | |
2281 | ||
528dc603 L |
2282 | pie |
2283 | Common RejectNegative Negative(shared) | |
2284 | Create a position independent executable | |
2285 | ||
6d721f67 JM |
2286 | z |
2287 | Driver Joined Separate | |
2288 | ||
d7b42618 | 2289 | ; This comment is to ensure we retain the blank line above. |