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3272db82 | 1 | ; Options for the language- and target-independent parts of the compiler. |
2e9da478 | 2 | |
8e8f6434 | 3 | ; Copyright (C) 2003-2018 Free Software Foundation, Inc. |
3272db82 | 4 | ; |
5 | ; This file is part of GCC. | |
6 | ; | |
7 | ; GCC is free software; you can redistribute it and/or modify it under | |
8 | ; the terms of the GNU General Public License as published by the Free | |
8c4c00c1 | 9 | ; Software Foundation; either version 3, or (at your option) any later |
3272db82 | 10 | ; version. |
a0c938f0 | 11 | ; |
3272db82 | 12 | ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | ; WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | ; for more details. | |
a0c938f0 | 16 | ; |
3272db82 | 17 | ; You should have received a copy of the GNU General Public License |
8c4c00c1 | 18 | ; along with GCC; see the file COPYING3. If not see |
19 | ; <http://www.gnu.org/licenses/>. | |
3272db82 | 20 | |
a4b0007b | 21 | ; See the GCC internals manual (options.texi) for a description of this file's format. |
3272db82 | 22 | |
23 | ; Please try to keep this file in ASCII collating order. | |
24 | ||
0f8defe5 | 25 | Variable |
26 | int target_flags | |
27 | ||
2c5d2e39 | 28 | Variable |
29 | int optimize | |
30 | ||
31 | Variable | |
32 | int optimize_size | |
33 | ||
9b0d2865 | 34 | Variable |
35 | int optimize_debug | |
36 | ||
d2807aa3 | 37 | ; Not used directly to control optimizations, only to save -Ofast |
38 | ; setting for "optimize" attributes. | |
39 | Variable | |
40 | int optimize_fast | |
41 | ||
90336809 | 42 | ; True if this is the lto front end. This is used to disable gimple |
43 | ; generation and lowering passes that are normally run on the output | |
44 | ; of a front end. These passes must be bypassed for lto since they | |
45 | ; have already been done before the gimple was written. | |
46 | Variable | |
47 | bool in_lto_p = false | |
48 | ||
4c4a180d | 49 | ; This variable is set to non-0 only by LTO front-end. 1 indicates that |
50 | ; the output produced will be used for incrmeental linking (thus weak symbols | |
278cec16 | 51 | ; can still be bound) and 2 indicates that the IL is going to be linked and |
52 | ; and output to LTO object file. | |
4c4a180d | 53 | Variable |
278cec16 | 54 | enum incremental_link flag_incremental_link = INCREMENTAL_LINK_NONE |
4c4a180d | 55 | |
f3f006ad | 56 | ; 0 means straightforward implementation of complex divide acceptable. |
57 | ; 1 means wide ranges of inputs must work for complex divide. | |
58 | ; 2 means C99-like requirements for complex multiply and divide. | |
59 | Variable | |
60 | int flag_complex_method = 1 | |
61 | ||
f3f006ad | 62 | ; Language specific warning pass for unused results. |
63 | Variable | |
64 | bool flag_warn_unused_result = false | |
65 | ||
56f280c4 | 66 | Variable |
67 | int *param_values | |
68 | ||
6bd9d862 | 69 | ; Nonzero if we should write GIMPLE bytecode for link-time optimization. |
70 | Variable | |
71 | int flag_generate_lto | |
72 | ||
9f28dc4c | 73 | ; Nonzero if we should write GIMPLE bytecode for offload compilation. |
74 | Variable | |
75 | int flag_generate_offload = 0 | |
76 | ||
6bd9d862 | 77 | ; Nonzero means we should be saving declaration info into a .X file. |
78 | Variable | |
79 | int flag_gen_aux_info = 0 | |
80 | ||
81 | ; Nonzero if we are compiling code for a shared library, zero for | |
82 | ; executable. | |
83 | Variable | |
84 | int flag_shlib | |
85 | ||
470a0ecd | 86 | ; These two are really VEC(char_p,heap) *. |
87 | ||
88 | Variable | |
89 | void *flag_instrument_functions_exclude_functions | |
90 | ||
91 | Variable | |
92 | void *flag_instrument_functions_exclude_files | |
93 | ||
d7175aef | 94 | ; Generic structs (e.g. templates not explicitly specialized) |
95 | ; may not have a compilation unit associated with them, and so | |
96 | ; may need to be treated differently from ordinary structs. | |
97 | ; | |
98 | ; Structs only handled by reference (indirectly), will also usually | |
99 | ; not need as much debugging information. | |
100 | ||
101 | Variable | |
102 | enum debug_struct_file debug_struct_ordinary[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
103 | ||
104 | Variable | |
105 | enum debug_struct_file debug_struct_generic[DINFO_USAGE_NUM_ENUMS] = { DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY, DINFO_STRUCT_FILE_ANY } | |
106 | ||
cc4fa57a | 107 | ; True if we should exit after parsing options. |
108 | Variable | |
109 | bool exit_after_options | |
110 | ||
111 | ; Type(s) of debugging information we are producing (if any). See | |
112 | ; flag-types.h for the definitions of the different possible types of | |
113 | ; debugging information. | |
114 | Variable | |
115 | enum debug_info_type write_symbols = NO_DEBUG | |
116 | ||
117 | ; Level of debugging information we are producing. See flag-types.h | |
118 | ; for the definitions of the different possible levels. | |
119 | Variable | |
120 | enum debug_info_levels debug_info_level = DINFO_LEVEL_NONE | |
121 | ||
122 | ; Nonzero means use GNU-only extensions in the generated symbolic | |
123 | ; debugging information. Currently, this only has an effect when | |
dc75b246 | 124 | ; write_symbols is set to DBX_DEBUG or XCOFF_DEBUG. |
cc4fa57a | 125 | Variable |
126 | bool use_gnu_debug_info_extensions | |
127 | ||
9faf44d6 | 128 | ; Original value of maximum field alignment in bytes, specified via |
129 | ; -fpack-struct=<value>. | |
130 | Variable | |
131 | unsigned int initial_max_fld_align = TARGET_DEFAULT_PACK_STRUCT | |
132 | ||
ab3728ee | 133 | ; Type of stack check. |
134 | Variable | |
135 | enum stack_check_type flag_stack_check = NO_STACK_CHECK | |
136 | ||
8c0dd614 | 137 | ; True if stack usage information needs to be computed. |
138 | Variable | |
139 | bool flag_stack_usage_info = false | |
140 | ||
9faf44d6 | 141 | ; -dA causes debug commentary information to be produced in |
142 | ; the generated assembly code (to make it more readable). This option | |
143 | ; is generally only of use to those who actually need to read the | |
144 | ; generated assembly code (perhaps while debugging the compiler itself). | |
145 | ; Currently, this switch is only used by dwarf2out.c; however, it is intended | |
146 | ; to be a catchall for printing debug information in the assembler file. | |
147 | Variable | |
148 | int flag_debug_asm | |
149 | ||
e6c4532a | 150 | ; How many NOP insns to place at each function entry by default |
151 | Variable | |
152 | HOST_WIDE_INT function_entry_patch_area_size | |
153 | ||
154 | ; And how far the real asm entry point is into this area | |
155 | Variable | |
156 | HOST_WIDE_INT function_entry_patch_area_start | |
f78f10d6 | 157 | |
158 | ; Balance between GNAT encodings and standard DWARF to emit. | |
159 | Variable | |
160 | enum dwarf_gnat_encodings gnat_encodings = DWARF_GNAT_ENCODINGS_DEFAULT | |
161 | ||
9faf44d6 | 162 | ; -dP causes the rtl to be emitted as a comment in assembly. |
163 | Variable | |
164 | int flag_dump_rtl_in_asm | |
165 | ||
166 | ; Whether -da was passed (used only in handle_common_deferred_options). | |
167 | Variable | |
168 | bool flag_dump_all_passed | |
169 | ||
170 | ; Other flags saying which kinds of debugging dump have been requested. | |
171 | ||
172 | Variable | |
173 | int rtl_dump_and_exit | |
174 | ||
175 | Variable | |
176 | int flag_print_asm_name | |
177 | ||
0e763b2a | 178 | ; Name of top-level original source file (what was input to cpp). |
179 | ; This comes from the #-command at the beginning of the actual input. | |
180 | ; If there isn't any there, then this is the cc1 input file name. | |
181 | Variable | |
182 | const char *main_input_filename | |
183 | ||
184 | ; Pointer to base name in main_input_filename, with directories and a | |
185 | ; single final extension removed, and the length of this base | |
186 | ; name. | |
187 | ||
188 | Variable | |
189 | const char *main_input_basename | |
190 | ||
191 | Variable | |
192 | int main_input_baselength | |
193 | ||
9faf44d6 | 194 | ; Which options have been printed by --help. |
195 | Variable | |
196 | char *help_printed | |
197 | ||
d62a5950 | 198 | ; Which enums have been printed by --help. 0 = not printed, no |
199 | ; relevant options seen, 1 = relevant option seen, not yet printed, 2 | |
200 | ; = printed. | |
201 | Variable | |
202 | char *help_enum_printed | |
203 | ||
9faf44d6 | 204 | ; The number of columns for --help output. |
205 | Variable | |
206 | unsigned int help_columns | |
207 | ||
208 | ; Whether this options structure has been through finish_options | |
209 | Variable | |
210 | bool flag_opts_finished | |
211 | ||
9e46467d | 212 | ; What the sanitizer should instrument |
213 | Variable | |
214 | unsigned int flag_sanitize | |
215 | ||
c2598081 | 216 | ; What sanitizers should recover from errors |
217 | Variable | |
9917317a | 218 | unsigned int flag_sanitize_recover = (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT | SANITIZE_KERNEL_ADDRESS) & ~(SANITIZE_UNREACHABLE | SANITIZE_RETURN) |
c2598081 | 219 | |
ccec7674 | 220 | ; What the coverage sanitizers should instrument |
221 | Variable | |
222 | unsigned int flag_sanitize_coverage | |
d29e939c | 223 | |
6aaca0b4 | 224 | ; Flag whether a prefix has been added to dump_base_name |
225 | Variable | |
226 | bool dump_base_name_prefixed = false | |
227 | ||
56686608 | 228 | ; Flag whether HSA generation has been explicitely disabled |
229 | Variable | |
230 | bool flag_disable_hsa = false | |
231 | ||
e28aa114 | 232 | ### |
233 | Driver | |
234 | ||
5789e05b | 235 | -assemble |
236 | Driver Alias(S) | |
237 | ||
238 | -compile | |
239 | Driver Alias(c) | |
240 | ||
6e8a18d1 | 241 | -completion= |
242 | Common Driver Joined Undocumented | |
243 | Provide bash completion for options starting with provided string. | |
244 | ||
5789e05b | 245 | -coverage |
246 | Driver Alias(coverage) | |
247 | ||
248 | -debug | |
249 | Common Alias(g) | |
250 | ||
251 | -dump | |
252 | Common Separate Alias(d) | |
253 | ||
254 | -dump= | |
255 | Common Joined Alias(d) | |
256 | ||
257 | -dumpbase | |
258 | Common Separate Alias(dumpbase) | |
259 | ||
260 | -dumpdir | |
261 | Common Separate Alias(dumpdir) | |
262 | ||
263 | -entry | |
264 | Driver Separate Alias(e) | |
265 | ||
266 | -entry= | |
267 | Driver Joined Alias(e) | |
268 | ||
269 | -extra-warnings | |
270 | Common Warning Alias(Wextra) | |
271 | ||
272 | -for-assembler | |
273 | Driver Separate Alias(Xassembler) | |
274 | ||
275 | -for-assembler= | |
276 | Driver JoinedOrMissing Alias(Xassembler) | |
277 | ||
278 | -for-linker | |
279 | Driver Separate Alias(Xlinker) | |
280 | ||
281 | -for-linker= | |
282 | Driver JoinedOrMissing Alias(Xlinker) | |
283 | ||
284 | -force-link | |
285 | Driver Separate Alias(u) | |
286 | ||
287 | -force-link= | |
288 | Driver Joined Alias(u) | |
289 | ||
e690b385 | 290 | -help |
5789e05b | 291 | Common Driver Var(help_flag) |
8fb42bbc | 292 | Display this information. |
e690b385 | 293 | |
87c75316 | 294 | -help= |
e28aa114 | 295 | Common Driver Report Joined |
8fb42bbc | 296 | --help=<class> Display descriptions of a specific class of options. <class> is one or more of optimizers, target, warnings, undocumented, params. |
da3b1bab | 297 | |
5789e05b | 298 | -language |
299 | Driver Separate Alias(x) | |
300 | ||
301 | -language= | |
302 | Driver Joined Alias(x) | |
303 | ||
304 | -library-directory | |
305 | Driver Separate Alias(L) | |
306 | ||
307 | -library-directory= | |
308 | Driver Joined Alias(L) | |
309 | ||
310 | -no-canonical-prefixes | |
311 | Driver Alias(no-canonical-prefixes) | |
312 | ||
313 | -no-standard-libraries | |
314 | Driver Alias(nostdlib) | |
315 | ||
70eb49f5 | 316 | -no-sysroot-suffix |
317 | Driver Var(no_sysroot_suffix) | |
318 | ||
5789e05b | 319 | -no-warnings |
320 | Common Alias(w) | |
321 | ||
322 | -optimize | |
323 | Common Alias(O) | |
324 | ||
325 | -output | |
326 | Common Driver Separate Alias(o) MissingArgError(missing filename after %qs) | |
327 | ||
328 | -output= | |
329 | Common Driver Joined Alias(o) MissingArgError(missing filename after %qs) | |
330 | ||
331 | -pass-exit-codes | |
332 | Driver Alias(pass-exit-codes) | |
333 | ||
334 | -pedantic | |
29438999 | 335 | Common Alias(Wpedantic) |
5789e05b | 336 | |
337 | -pedantic-errors | |
338 | Common Alias(pedantic-errors) | |
339 | ||
340 | -pie | |
1412b935 | 341 | Driver Alias(pie) |
5789e05b | 342 | |
6d1ab23d | 343 | -static-pie |
344 | Driver Alias(static-pie) | |
345 | ||
5789e05b | 346 | -pipe |
347 | Driver Alias(pipe) | |
348 | ||
349 | -prefix | |
350 | Driver Separate Alias(B) | |
351 | ||
352 | -prefix= | |
353 | Driver JoinedOrMissing Alias(B) | |
354 | ||
355 | -preprocess | |
356 | Driver Alias(E) | |
357 | ||
358 | -print-file-name | |
359 | Driver Separate Alias(print-file-name=) | |
360 | ||
361 | -print-file-name= | |
362 | Driver JoinedOrMissing Alias(print-file-name=) | |
363 | ||
364 | -print-libgcc-file-name | |
365 | Driver Alias(print-libgcc-file-name) | |
366 | ||
367 | -print-multi-directory | |
368 | Driver Alias(print-multi-directory) | |
369 | ||
370 | -print-multi-lib | |
371 | Driver Alias(print-multi-lib) | |
372 | ||
373 | -print-multi-os-directory | |
374 | Driver Alias(print-multi-os-directory) | |
375 | ||
77adc39e | 376 | -print-multiarch |
377 | Driver Alias(print-multiarch) | |
378 | ||
5789e05b | 379 | -print-prog-name |
380 | Driver Separate Alias(print-prog-name=) | |
381 | ||
382 | -print-prog-name= | |
383 | Driver JoinedOrMissing Alias(print-prog-name=) | |
384 | ||
385 | -print-search-dirs | |
386 | Driver Alias(print-search-dirs) | |
387 | ||
388 | -print-sysroot | |
389 | Driver Alias(print-sysroot) | |
390 | ||
391 | -print-sysroot-headers-suffix | |
392 | Driver Alias(print-sysroot-headers-suffix) | |
393 | ||
394 | -profile | |
395 | Common Alias(p) | |
396 | ||
397 | -save-temps | |
398 | Driver Alias(save-temps) | |
399 | ||
400 | -shared | |
1412b935 | 401 | Driver Alias(shared) |
5789e05b | 402 | |
403 | -specs | |
404 | Driver Separate Alias(specs=) | |
405 | ||
406 | -specs= | |
407 | Driver Joined Alias(specs=) | |
408 | ||
409 | -static | |
410 | Driver Alias(static) | |
411 | ||
412 | -symbolic | |
413 | Driver Alias(symbolic) | |
414 | ||
e690b385 | 415 | -target-help |
e28aa114 | 416 | Common Driver |
8fb42bbc | 417 | Alias for --help=target. |
87c75316 | 418 | |
5789e05b | 419 | -time |
420 | Driver Alias(time) | |
421 | ||
422 | -verbose | |
423 | Driver Alias(v) | |
424 | ||
425 | ;; The driver used to convert options such as --help into forms such | |
426 | ;; as -fhelp; the following four entries are for compatibility with | |
427 | ;; any direct uses of those (undocumented) -f forms | |
87c75316 | 428 | fhelp |
5789e05b | 429 | Common Driver Alias(-help) |
87c75316 | 430 | |
431 | fhelp= | |
5789e05b | 432 | Common Driver Joined Alias(-help=) |
87c75316 | 433 | |
434 | ftarget-help | |
5789e05b | 435 | Common Driver Alias(-target-help) |
87c75316 | 436 | |
39932bd2 | 437 | fversion |
5789e05b | 438 | Common Driver Alias(-version) |
39932bd2 | 439 | |
87c75316 | 440 | -param |
441 | Common Separate | |
8fb42bbc | 442 | --param <param>=<value> Set parameter <param> to value. See below for a complete list of parameters. |
e690b385 | 443 | |
5789e05b | 444 | -param= |
445 | Common Joined Alias(-param) | |
446 | ||
447 | -sysroot | |
448 | Driver Separate Alias(-sysroot=) | |
449 | ||
e28aa114 | 450 | -sysroot= |
451 | Driver JoinedOrMissing | |
452 | ||
e690b385 | 453 | -version |
e28aa114 | 454 | Common Driver |
455 | ||
456 | B | |
457 | Driver Joined Separate | |
458 | ||
459 | E | |
460 | Driver | |
e690b385 | 461 | |
cb22f930 | 462 | L |
463 | Driver Joined Separate | |
464 | ||
3bfde2af | 465 | N |
466 | Driver | |
467 | ||
da3b1bab | 468 | O |
46f8e3b0 | 469 | Common JoinedOrMissing Optimization |
8fb42bbc | 470 | -O<number> Set optimization level to <number>. |
da3b1bab | 471 | |
472 | Os | |
46f8e3b0 | 473 | Common Optimization |
8fb42bbc | 474 | Optimize for space rather than speed. |
da3b1bab | 475 | |
1ebc0b9f | 476 | Ofast |
477 | Common Optimization | |
8fb42bbc | 478 | Optimize for speed disregarding exact standards compliance. |
1ebc0b9f | 479 | |
9b0d2865 | 480 | Og |
481 | Common Optimization | |
8fb42bbc | 482 | Optimize for debugging experience rather than speed or size. |
9b0d2865 | 483 | |
3bfde2af | 484 | Q |
485 | Driver | |
486 | ||
487 | Qn | |
488 | Driver Negative(Qy) | |
489 | ||
490 | Qy | |
491 | Driver Negative(Qn) | |
492 | ||
f37ef985 | 493 | R |
494 | Driver Joined Separate | |
495 | ||
e28aa114 | 496 | S |
497 | Driver | |
498 | ||
f37ef985 | 499 | T |
500 | Driver Joined Separate | |
501 | ||
502 | Tbss | |
503 | Driver Separate | |
504 | ||
69304750 | 505 | Tbss= |
506 | Driver Joined | |
507 | ||
f37ef985 | 508 | Tdata |
509 | Driver Separate | |
510 | ||
69304750 | 511 | Tdata= |
512 | Driver Joined | |
513 | ||
f37ef985 | 514 | Ttext |
515 | Driver Separate | |
516 | ||
69304750 | 517 | Ttext= |
518 | Driver Joined | |
519 | ||
da3b1bab | 520 | W |
67089c6b | 521 | Common RejectNegative Warning Alias(Wextra) |
8fb42bbc | 522 | This switch is deprecated; use -Wextra instead. |
da3b1bab | 523 | |
e28aa114 | 524 | Wa, |
a1408eb3 | 525 | Driver JoinedOrMissing RejectNegative |
e28aa114 | 526 | |
527 | Wl, | |
a1408eb3 | 528 | Driver JoinedOrMissing RejectNegative |
e28aa114 | 529 | |
530 | Wp, | |
a1408eb3 | 531 | Driver JoinedOrMissing RejectNegative |
e28aa114 | 532 | |
6f2f567f | 533 | Waggregate-return |
87c75316 | 534 | Common Var(warn_aggregate_return) Warning |
8fb42bbc | 535 | Warn about returning structures, unions or arrays. |
6f2f567f | 536 | |
228bf2b8 | 537 | Waggressive-loop-optimizations |
538 | Common Var(warn_aggressive_loop_optimizations) Init(1) Warning | |
8fb42bbc | 539 | Warn if a loop with constant number of iterations triggers undefined behavior. |
228bf2b8 | 540 | |
5bc96398 | 541 | Warray-bounds |
e8831472 | 542 | Common Var(warn_array_bounds) Warning |
8fb42bbc | 543 | Warn if an array is accessed out of bounds. |
5bc96398 | 544 | |
e4fd7af1 | 545 | Warray-bounds= |
52368c34 | 546 | Common Joined RejectNegative UInteger Var(warn_array_bounds) Warning IntegerRange(0, 2) |
8fb42bbc | 547 | Warn if an array is accessed out of bounds. |
e4fd7af1 | 548 | |
9b2d6d13 | 549 | Wattributes |
87c75316 | 550 | Common Var(warn_attributes) Init(1) Warning |
8fb42bbc | 551 | Warn about inappropriate attribute usage. |
9b2d6d13 | 552 | |
08cc1019 | 553 | Wattribute-alias= |
554 | Common Joined RejectNegative UInteger Var(warn_attribute_alias) Init(1) Warning IntegerRange(0, 2) | |
555 | Warn about type safety and similar errors and mismatches in attribute alias and related. | |
556 | ||
557 | Wno-attribute-alias | |
558 | Common Alias(Wattribute_alias=, 0, 0) Warning | |
559 | Disable -Wattribute-alias. | |
fa9132f4 | 560 | |
2832ed10 | 561 | Wcannot-profile |
562 | Common Var(warn_cannot_profile) Init(1) Warning | |
563 | Warn when profiling instrumentation was requested, but could not be applied to | |
564 | a certain function. | |
565 | ||
6f2f567f | 566 | Wcast-align |
87c75316 | 567 | Common Var(warn_cast_align) Warning |
8fb42bbc | 568 | Warn about pointer casts which increase alignment. |
6f2f567f | 569 | |
7ceee42d | 570 | Wcast-align=strict |
571 | Common Var(warn_cast_align,2) Warning | |
572 | Warn about pointer casts which increase alignment. | |
573 | ||
3a79f5da | 574 | Wcpp |
575 | Common Var(warn_cpp) Init(1) Warning | |
8fb42bbc | 576 | Warn when a #warning directive is encountered. |
3a79f5da | 577 | |
1323f5b0 | 578 | Wattribute-warning |
579 | Common Var(warn_attribute_warning) Init(1) Warning | |
580 | Warn about uses of __attribute__((warning)) declarations. | |
581 | ||
6f2f567f | 582 | Wdeprecated-declarations |
87c75316 | 583 | Common Var(warn_deprecated_decl) Init(1) Warning |
8fb42bbc | 584 | Warn about uses of __attribute__((deprecated)) declarations. |
6f2f567f | 585 | |
586 | Wdisabled-optimization | |
87c75316 | 587 | Common Var(warn_disabled_optimization) Warning |
8fb42bbc | 588 | Warn when an optimization pass is disabled. |
6f2f567f | 589 | |
590 | Werror | |
2e9da478 | 591 | Common Var(warnings_are_errors) |
8fb42bbc | 592 | Treat all warnings as errors. |
6f2f567f | 593 | |
76f02516 | 594 | Werror= |
595 | Common Joined | |
8fb42bbc | 596 | Treat specified warning as error. |
76f02516 | 597 | |
da3b1bab | 598 | Wextra |
a0ded67b | 599 | Common Var(extra_warnings) Warning |
8fb42bbc | 600 | Print extra (possibly unwanted) warnings. |
da3b1bab | 601 | |
295acf4f | 602 | Wfatal-errors |
2e9da478 | 603 | Common Var(flag_fatal_errors) |
8fb42bbc | 604 | Exit on the first error occurred. |
295acf4f | 605 | |
6fdade09 | 606 | Wframe-larger-than= |
8e18705e | 607 | Common RejectNegative Joined Host_Wide_Int ByteSize Warning Var(warn_frame_larger_than_size) Init(HOST_WIDE_INT_MAX) |
608 | -Wframe-larger-than=<byte-size> Warn if a function's stack frame requires in excess of <byte-size>. | |
6fdade09 | 609 | |
f74ea1c2 | 610 | Wfree-nonheap-object |
611 | Common Var(warn_free_nonheap_object) Init(1) Warning | |
8fb42bbc | 612 | Warn when attempting to free a non-heap object. |
f74ea1c2 | 613 | |
56686608 | 614 | Whsa |
615 | Common Var(warn_hsa) Init(1) Warning | |
616 | Warn when a function cannot be expanded to HSAIL. | |
617 | ||
3c77f69c | 618 | Wimplicit-fallthrough |
12663602 | 619 | Common Alias(Wimplicit-fallthrough=,3,0) Warning |
620 | ||
621 | Wimplicit-fallthrough= | |
52368c34 | 622 | Common Var(warn_implicit_fallthrough) RejectNegative Joined UInteger Warning IntegerRange(0, 5) |
3c77f69c | 623 | Warn when a switch case falls through. |
624 | ||
6f2f567f | 625 | Winline |
87c75316 | 626 | Common Var(warn_inline) Warning |
8fb42bbc | 627 | Warn when an inlined function cannot be inlined. |
6f2f567f | 628 | |
1cd6e20d | 629 | Winvalid-memory-model |
630 | Common Var(warn_invalid_memory_model) Init(1) Warning | |
631 | Warn when an atomic memory model parameter is known to be outside the valid range. | |
632 | ||
6f2f567f | 633 | Wlarger-than- |
67089c6b | 634 | Common RejectNegative Joined Warning Undocumented Alias(Wlarger-than=) |
17c66687 | 635 | |
636 | Wlarger-than= | |
8e18705e | 637 | Common RejectNegative Joined Host_Wide_Int ByteSize Warning Var(warn_larger_than_size) Init(HOST_WIDE_INT_MAX) |
638 | -Wlarger-than=<byte-size> Warn if an object's size exceeds <byte-size>. | |
6f2f567f | 639 | |
7675e968 | 640 | Wnonnull-compare |
641 | Var(warn_nonnull_compare) Warning | |
642 | Warn if comparing pointer parameter with nonnull attribute with NULL. | |
643 | ||
254d68a9 | 644 | Wnull-dereference |
5463f502 | 645 | Common Var(warn_null_dereference) Warning |
8fb42bbc | 646 | Warn if dereferencing a NULL pointer may lead to erroneous or undefined behavior. |
254d68a9 | 647 | |
7e3cc681 | 648 | Wunsafe-loop-optimizations |
b97fffd6 | 649 | Common Ignore Warning |
650 | Does nothing. Preserved for backward compatibility. | |
7e3cc681 | 651 | |
6f2f567f | 652 | Wmissing-noreturn |
7ca909c6 | 653 | Common Warning Alias(Wsuggest-attribute=noreturn) |
6f2f567f | 654 | |
c8902726 | 655 | Wodr |
01cb9cf7 | 656 | Common Var(warn_odr_violations) Init(1) Warning |
8fb42bbc | 657 | Warn about some C++ One Definition Rule violations during link time optimization. |
c8902726 | 658 | |
55972f40 | 659 | Woverflow |
87c75316 | 660 | Common Var(warn_overflow) Init(1) Warning |
8fb42bbc | 661 | Warn about overflow in arithmetic expressions. |
55972f40 | 662 | |
40175f70 | 663 | Wlto-type-mismatch |
664 | Common Var(warn_lto_type_mismatch) Init(1) Warning | |
8fb42bbc | 665 | During link time optimization warn about mismatched types of global declarations. |
40175f70 | 666 | |
6f2f567f | 667 | Wpacked |
87c75316 | 668 | Common Var(warn_packed) Warning |
8fb42bbc | 669 | Warn when the packed attribute has no effect on struct layout. |
6f2f567f | 670 | |
671 | Wpadded | |
87c75316 | 672 | Common Var(warn_padded) Warning |
8fb42bbc | 673 | Warn when padding is required to align structure members. |
6f2f567f | 674 | |
29438999 | 675 | Wpedantic |
04afd878 | 676 | Common Var(pedantic) Init(0) Warning |
8fb42bbc | 677 | Issue warnings needed for strict compliance to the standard. |
29438999 | 678 | |
f22a2cb7 | 679 | Wreturn-local-addr |
680 | Common Var(warn_return_local_addr) Init(1) Warning | |
681 | Warn about returning a pointer/reference to a local or temporary variable. | |
682 | ||
6f2f567f | 683 | Wshadow |
87c75316 | 684 | Common Var(warn_shadow) Warning |
50d3ad71 | 685 | Warn when one variable shadows another. Same as -Wshadow=global. |
686 | ||
687 | Wshadow=global | |
688 | Common Warning Alias(Wshadow) | |
689 | Warn when one variable shadows another (globally). | |
690 | ||
691 | Wshadow=local | |
692 | Common Var(warn_shadow_local) Warning EnabledBy(Wshadow) | |
693 | Warn when one local variable shadows another local variable or parameter. | |
694 | ||
695 | Wshadow-local | |
696 | Common Warning Undocumented Alias(Wshadow=local) | |
697 | ||
698 | Wshadow=compatible-local | |
699 | Common Var(warn_shadow_compatible_local) Warning EnabledBy(Wshadow=local) | |
700 | Warn when one local variable shadows another local variable or parameter of compatible type. | |
701 | ||
702 | Wshadow-compatible-local | |
703 | Common Warning Undocumented Alias(Wshadow=compatible-local) | |
6f2f567f | 704 | |
f1a0edff | 705 | Wstack-protector |
87c75316 | 706 | Common Var(warn_stack_protect) Warning |
8fb42bbc | 707 | Warn when not issuing stack smashing protection for some reason. |
f1a0edff | 708 | |
8c0dd614 | 709 | Wstack-usage= |
8e18705e | 710 | Common Joined RejectNegative Host_Wide_Int ByteSize Var(warn_stack_usage) Warning Init(HOST_WIDE_INT_MAX) |
711 | -Wstack-usage=<byte-size> Warn if stack usage might exceed <byte-size>. | |
8c0dd614 | 712 | |
6f2f567f | 713 | Wstrict-aliasing |
87c75316 | 714 | Common Warning |
8fb42bbc | 715 | Warn about code which might break strict aliasing rules. |
6f2f567f | 716 | |
c1628b55 | 717 | Wstrict-aliasing= |
77b27208 | 718 | Common Joined RejectNegative UInteger Var(warn_strict_aliasing) Warning |
8fb42bbc | 719 | Warn about code which might break strict aliasing rules. |
c1628b55 | 720 | |
add6ee5e | 721 | Wstrict-overflow |
e8831472 | 722 | Common Warning |
8fb42bbc | 723 | Warn about optimizations that assume that signed overflow is undefined. |
add6ee5e | 724 | |
725 | Wstrict-overflow= | |
77b27208 | 726 | Common Joined RejectNegative UInteger Var(warn_strict_overflow) Warning |
8fb42bbc | 727 | Warn about optimizations that assume that signed overflow is undefined. |
add6ee5e | 728 | |
60722a03 | 729 | Wsuggest-attribute=cold |
730 | Common Var(warn_suggest_attribute_cold) Warning | |
731 | Warn about functions which might be candidates for __attribute__((cold)). | |
732 | ||
2c06958d | 733 | Wsuggest-attribute=const |
734 | Common Var(warn_suggest_attribute_const) Warning | |
8fb42bbc | 735 | Warn about functions which might be candidates for __attribute__((const)). |
2c06958d | 736 | |
737 | Wsuggest-attribute=pure | |
738 | Common Var(warn_suggest_attribute_pure) Warning | |
8fb42bbc | 739 | Warn about functions which might be candidates for __attribute__((pure)). |
2c06958d | 740 | |
43d60d64 | 741 | Wsuggest-attribute=noreturn |
742 | Common Var(warn_suggest_attribute_noreturn) Warning | |
8fb42bbc | 743 | Warn about functions which might be candidates for __attribute__((noreturn)). |
43d60d64 | 744 | |
bd5ef087 | 745 | Wsuggest-attribute=malloc |
746 | Common Var(warn_suggest_attribute_malloc) Warning | |
747 | Warn about functions which might be candidates for __attribute__((malloc)). | |
748 | ||
fb6c6e54 | 749 | Wsuggest-final-types |
750 | Common Var(warn_suggest_final_types) Warning | |
8fb42bbc | 751 | Warn about C++ polymorphic types where adding final keyword would improve code quality. |
fb6c6e54 | 752 | |
753 | Wsuggest-final-methods | |
754 | Common Var(warn_suggest_final_methods) Warning | |
8fb42bbc | 755 | Warn about C++ virtual methods where adding final keyword would improve code quality. |
fb6c6e54 | 756 | |
1398da0f | 757 | Wswitch-unreachable |
758 | Common Var(warn_switch_unreachable) Warning Init(1) | |
759 | Warn about statements between switch's controlling expression and the first | |
760 | case. | |
761 | ||
6f2f567f | 762 | Wsystem-headers |
87c75316 | 763 | Common Var(warn_system_headers) Warning |
8fb42bbc | 764 | Do not suppress warnings from system headers. |
6f2f567f | 765 | |
8bc8a8f4 | 766 | Wtrampolines |
767 | Common Var(warn_trampolines) Warning | |
8fb42bbc | 768 | Warn whenever a trampoline is generated. |
8bc8a8f4 | 769 | |
100b67da | 770 | Wtype-limits |
70059cea | 771 | Common Var(warn_type_limits) Warning EnabledBy(Wextra) |
8fb42bbc | 772 | Warn if a comparison is always true or always false due to the limited range of the data type. |
100b67da | 773 | |
6f2f567f | 774 | Wuninitialized |
fbb6fbd8 | 775 | Common Var(warn_uninitialized) Warning EnabledBy(Wextra) |
8fb42bbc | 776 | Warn about uninitialized automatic variables. |
6f2f567f | 777 | |
8c3e8d68 | 778 | Wmaybe-uninitialized |
fbb6fbd8 | 779 | Common Var(warn_maybe_uninitialized) Warning EnabledBy(Wuninitialized) |
8fb42bbc | 780 | Warn about maybe uninitialized automatic variables. |
8c3e8d68 | 781 | |
6f2f567f | 782 | Wunreachable-code |
eec0fa3f | 783 | Common Ignore Warning |
cc029bec | 784 | Does nothing. Preserved for backward compatibility. |
6f2f567f | 785 | |
da3b1bab | 786 | Wunused |
278e3a1f | 787 | Common Var(warn_unused) Init(0) Warning |
8fb42bbc | 788 | Enable all -Wunused- warnings. |
da3b1bab | 789 | |
abc6c64f | 790 | Wunused-but-set-parameter |
1090f26f | 791 | Common Var(warn_unused_but_set_parameter) Warning EnabledBy(Wunused && Wextra) |
8fb42bbc | 792 | Warn when a function parameter is only set, otherwise unused. |
abc6c64f | 793 | |
794 | Wunused-but-set-variable | |
fbb6fbd8 | 795 | Common Var(warn_unused_but_set_variable) Warning EnabledBy(Wunused) |
8fb42bbc | 796 | Warn when a variable is only set, otherwise unused. |
abc6c64f | 797 | |
6f2f567f | 798 | Wunused-function |
fbb6fbd8 | 799 | Common Var(warn_unused_function) Warning EnabledBy(Wunused) |
8fb42bbc | 800 | Warn when a function is unused. |
6f2f567f | 801 | |
802 | Wunused-label | |
fbb6fbd8 | 803 | Common Var(warn_unused_label) Warning EnabledBy(Wunused) |
8fb42bbc | 804 | Warn when a label is unused. |
6f2f567f | 805 | |
806 | Wunused-parameter | |
1090f26f | 807 | Common Var(warn_unused_parameter) Warning EnabledBy(Wunused && Wextra) |
8fb42bbc | 808 | Warn when a function parameter is unused. |
6f2f567f | 809 | |
810 | Wunused-value | |
fbb6fbd8 | 811 | Common Var(warn_unused_value) Warning EnabledBy(Wunused) |
8fb42bbc | 812 | Warn when an expression value is unused. |
6f2f567f | 813 | |
814 | Wunused-variable | |
fbb6fbd8 | 815 | Common Var(warn_unused_variable) Warning EnabledBy(Wunused) |
8fb42bbc | 816 | Warn when a variable is unused. |
6f2f567f | 817 | |
c81ed7c1 | 818 | Wcoverage-mismatch |
21cd990d | 819 | Common Var(warn_coverage_mismatch) Init(1) Warning |
8fb42bbc | 820 | Warn in case profiles in -fprofile-use do not match. |
c81ed7c1 | 821 | |
c5fdd880 | 822 | Wmissing-profile |
823 | Common Var(warn_missing_profile) Init(1) Warning | |
824 | Warn in case profiles in -fprofile-use do not exist. | |
825 | ||
928efcfe | 826 | Wvector-operation-performance |
827 | Common Var(warn_vector_operation_performance) Warning | |
8fb42bbc | 828 | Warn when a vector operation is compiled outside the SIMD. |
928efcfe | 829 | |
e28aa114 | 830 | Xassembler |
831 | Driver Separate | |
832 | ||
833 | Xlinker | |
834 | Driver Separate | |
835 | ||
836 | Xpreprocessor | |
837 | Driver Separate | |
838 | ||
3bfde2af | 839 | Z |
840 | Driver | |
841 | ||
e690b385 | 842 | aux-info |
6bd9d862 | 843 | Common Separate Var(aux_info_file_name) |
8fb42bbc | 844 | -aux-info <file> Emit declaration information into <file>. |
e690b385 | 845 | |
846 | aux-info= | |
67089c6b | 847 | Common Joined Alias(aux-info) |
e690b385 | 848 | |
849 | auxbase | |
6bd9d862 | 850 | Common Separate RejectDriver Var(aux_base_name) |
e690b385 | 851 | |
852 | auxbase-strip | |
e28aa114 | 853 | Common Separate RejectDriver |
854 | ||
5789e05b | 855 | coverage |
856 | Driver | |
857 | ||
e28aa114 | 858 | c |
859 | Driver | |
e690b385 | 860 | |
861 | d | |
862 | Common Joined | |
8fb42bbc | 863 | -d<letters> Enable dumps from specific passes of the compiler. |
e690b385 | 864 | |
865 | dumpbase | |
6bd9d862 | 866 | Common Separate Var(dump_base_name) |
8fb42bbc | 867 | -dumpbase <file> Set the file basename to be used for dumps. |
e690b385 | 868 | |
50ca7c37 | 869 | dumpdir |
6bd9d862 | 870 | Common Separate Var(dump_dir_name) |
8fb42bbc | 871 | -dumpdir <dir> Set the directory name to be used for dumps. |
50ca7c37 | 872 | |
e28aa114 | 873 | dumpmachine |
874 | Driver | |
875 | ||
876 | dumpspecs | |
877 | Driver | |
878 | ||
879 | dumpversion | |
880 | Driver | |
881 | ||
0812bb06 | 882 | dumpfullversion |
883 | Driver | |
884 | ||
5789e05b | 885 | e |
886 | Driver Joined Separate | |
887 | ||
455188e9 | 888 | ; This option has historically been passed down to the linker by an |
889 | ; accident of a %{e*} spec, so ensure it continues to be passed down | |
890 | ; as a single option. The supported option for this purpose is | |
891 | ; -rdynamic. See PR 47390. | |
892 | export-dynamic | |
893 | Driver Undocumented | |
894 | ||
82a16202 | 895 | ; The version of the C++ ABI in use. The following values are allowed: |
896 | ; | |
897 | ; 0: The version of the ABI believed most conformant with the C++ ABI | |
898 | ; specification. This ABI may change as bugs are discovered and fixed. | |
899 | ; Therefore, 0 will not necessarily indicate the same ABI in different | |
900 | ; versions of G++. | |
901 | ; | |
f591db9a | 902 | ; 1: The version of the ABI first used in G++ 3.2. No longer selectable. |
82a16202 | 903 | ; |
1d524ff7 | 904 | ; 2: The version of the ABI first used in G++ 3.4, and the default |
905 | ; until GCC 4.9. | |
29e2e80a | 906 | ; |
907 | ; 3: The version of the ABI that fixes the missing underscore | |
908 | ; in template non-type arguments of pointer type. | |
909 | ; | |
910 | ; 4: The version of the ABI that introduces unambiguous mangling of | |
87d553db | 911 | ; vector types. First selectable in G++ 4.5. |
e9e7c198 | 912 | ; |
4d7aaf8e | 913 | ; 5: The version of the ABI that ignores attribute const/noreturn |
87d553db | 914 | ; in function pointer mangling, and corrects mangling of decltype and |
4d7aaf8e | 915 | ; function parameters used in other parameters and the return type. |
87d553db | 916 | ; First selectable in G++ 4.6. |
4d7aaf8e | 917 | ; |
2d847c18 | 918 | ; 6: The version of the ABI that doesn't promote scoped enums to int and |
919 | ; changes the mangling of template argument packs, const/static_cast, | |
920 | ; prefix ++ and --, and a class scope function used as a template | |
921 | ; argument. | |
72fc0f64 | 922 | ; First selectable in G++ 4.7. |
923 | ; | |
dc78d83a | 924 | ; 7: The version of the ABI that treats nullptr_t as a builtin type and |
925 | ; corrects the mangling of lambdas in default argument scope. | |
fbcdace8 | 926 | ; First selectable in G++ 4.8. |
862e5b6d | 927 | ; |
928 | ; 8: The version of the ABI that corrects the substitution behavior of | |
929 | ; function types with function-cv-qualifiers. | |
399fbdbd | 930 | ; First selectable in G++ 4.9 and default in G++ 5. |
931 | ; | |
42af8c2a | 932 | ; 9: The version of the ABI that corrects the alignment of nullptr_t. |
933 | ; First selectable and default in G++ 5.2. | |
934 | ; | |
935 | ; 10: The version of the ABI that mangles attributes that affect type | |
936 | ; identity, such as ia32 calling convention attributes (stdcall, etc.) | |
937 | ; Default in G++ 6 (set in c_common_post_options). | |
862e5b6d | 938 | ; |
7896267d | 939 | ; 11: The version of the ABI that corrects mangling of sizeof... expressions |
940 | ; and introduces new inheriting constructor handling. | |
17fdf85c | 941 | ; Default in G++ 7. |
942 | ; | |
5d11282b | 943 | ; 12: Corrects the calling convention for classes with only deleted copy/move |
532d84ff | 944 | ; constructors and changes passing/returning of empty records. |
a1dbee61 | 945 | ; Default in G++ 8.1. |
946 | ; | |
947 | ; 13: Fixes the accidental change in 12 to the calling convention for classes | |
948 | ; with deleted copy constructor and trivial move constructor. | |
949 | ; Default in G++ 8.2. | |
5d11282b | 950 | ; |
82a16202 | 951 | ; Additional positive integers will be assigned as new versions of |
952 | ; the ABI become the default version of the ABI. | |
e100aadc | 953 | fabi-version= |
f2c0954e | 954 | Common Joined RejectNegative UInteger Var(flag_abi_version) Init(0) |
8fb42bbc | 955 | The version of the C++ ABI in use. |
e100aadc | 956 | |
56dfa44a | 957 | faggressive-loop-optimizations |
8fb42bbc | 958 | Common Report Var(flag_aggressive_loop_optimizations) Optimization Init(1) |
959 | Aggressively optimize loops using language constraints. | |
56dfa44a | 960 | |
ecdb6d1a | 961 | falign-functions |
6848a0ae | 962 | Common Report Var(flag_align_functions) Optimization |
8fb42bbc | 963 | Align the start of functions. |
ecdb6d1a | 964 | |
941a4893 | 965 | falign-functions= |
6848a0ae | 966 | Common RejectNegative Joined Var(str_align_functions) Optimization |
941a4893 | 967 | |
32cc215b | 968 | flimit-function-alignment |
969 | Common Report Var(flag_limit_function_alignment) Optimization Init(0) | |
970 | ||
ecdb6d1a | 971 | falign-jumps |
6848a0ae | 972 | Common Report Var(flag_align_jumps) Optimization |
8fb42bbc | 973 | Align labels which are only reached by jumping. |
ecdb6d1a | 974 | |
941a4893 | 975 | falign-jumps= |
6848a0ae | 976 | Common RejectNegative Joined Var(str_align_jumps) Optimization |
941a4893 | 977 | |
ecdb6d1a | 978 | falign-labels |
6848a0ae | 979 | Common Report Var(flag_align_labels) Optimization |
8fb42bbc | 980 | Align all labels. |
ecdb6d1a | 981 | |
941a4893 | 982 | falign-labels= |
6848a0ae | 983 | Common RejectNegative Joined Var(str_align_labels) Optimization |
941a4893 | 984 | |
ecdb6d1a | 985 | falign-loops |
6848a0ae | 986 | Common Report Var(flag_align_loops) Optimization |
8fb42bbc | 987 | Align the start of loops. |
ecdb6d1a | 988 | |
941a4893 | 989 | falign-loops= |
371e2a2e | 990 | Common RejectNegative Joined Var(str_align_loops) Optimization |
941a4893 | 991 | |
ecdb6d1a | 992 | fargument-alias |
3b0273a1 | 993 | Common Ignore |
e190b18a | 994 | Does nothing. Preserved for backward compatibility. |
ecdb6d1a | 995 | |
996 | fargument-noalias | |
3b0273a1 | 997 | Common Ignore |
e190b18a | 998 | Does nothing. Preserved for backward compatibility. |
ecdb6d1a | 999 | |
1000 | fargument-noalias-global | |
3b0273a1 | 1001 | Common Ignore |
e190b18a | 1002 | Does nothing. Preserved for backward compatibility. |
ecdb6d1a | 1003 | |
5ff22aea | 1004 | fargument-noalias-anything |
3b0273a1 | 1005 | Common Ignore |
e190b18a | 1006 | Does nothing. Preserved for backward compatibility. |
5ff22aea | 1007 | |
9e46467d | 1008 | fsanitize= |
1009 | Common Driver Report Joined | |
8fb42bbc | 1010 | Select what to sanitize. |
b077695d | 1011 | |
ccec7674 | 1012 | fsanitize-coverage= |
1013 | Common Report Joined | |
dc4ed9fd | 1014 | Select type of coverage sanitization. |
ccec7674 | 1015 | |
cf357977 | 1016 | fasan-shadow-offset= |
1017 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
1018 | -fasan-shadow-offset=<number> Use custom shadow memory offset. | |
1019 | ||
4d3c996b | 1020 | fsanitize-sections= |
1021 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
1022 | -fsanitize-sections=<sec1,sec2,...> Sanitize global variables | |
1023 | in user-defined sections. | |
1024 | ||
c2598081 | 1025 | fsanitize-recover= |
1026 | Common Report Joined | |
8fb42bbc | 1027 | After diagnosing undefined behavior attempt to continue execution. |
7311d7c1 | 1028 | |
c2598081 | 1029 | fsanitize-recover |
1030 | Common Report | |
8fb42bbc | 1031 | This switch is deprecated; use -fsanitize-recover= instead. |
c2598081 | 1032 | |
629b6abc | 1033 | fsanitize-address-use-after-scope |
1034 | Common Driver Report Var(flag_sanitize_address_use_after_scope) Init(0) | |
1035 | ||
7311d7c1 | 1036 | fsanitize-undefined-trap-on-error |
d21bbc3f | 1037 | Common Driver Report Var(flag_sanitize_undefined_trap_on_error) Init(0) |
8fb42bbc | 1038 | Use trap instead of a library function for undefined behavior sanitization. |
7311d7c1 | 1039 | |
ecdb6d1a | 1040 | fasynchronous-unwind-tables |
87c75316 | 1041 | Common Report Var(flag_asynchronous_unwind_tables) Optimization |
8fb42bbc | 1042 | Generate unwind tables that are exact at each instruction boundary. |
ecdb6d1a | 1043 | |
3072d30e | 1044 | fauto-inc-dec |
bfedbed1 | 1045 | Common Report Var(flag_auto_inc_dec) Init(1) Optimization |
8fb42bbc | 1046 | Generate auto-inc/dec instructions. |
3072d30e | 1047 | |
94bed7c3 | 1048 | fauto-profile |
bfedbed1 | 1049 | Common Report Var(flag_auto_profile) |
94bed7c3 | 1050 | Use sample profile information for call graph node weights. The default |
1051 | profile file is fbdata.afdo in 'pwd'. | |
1052 | ||
1053 | fauto-profile= | |
1054 | Common Joined RejectNegative Var(auto_profile_file) | |
1055 | Use sample profile information for call graph node weights. The profile | |
1056 | file is specified in the argument. | |
1057 | ||
82a16202 | 1058 | ; -fcheck-bounds causes gcc to generate array bounds checks. |
1059 | ; For C, C++ and ObjC: defaults off. | |
1060 | ; For Java: defaults to on. | |
1061 | ; For Fortran: defaults to off. | |
ecdb6d1a | 1062 | fbounds-check |
2e9da478 | 1063 | Common Report Var(flag_bounds_check) |
8fb42bbc | 1064 | Generate code to check bounds before indexing arrays. |
ecdb6d1a | 1065 | |
1066 | fbranch-count-reg | |
1941e89d | 1067 | Common Report Var(flag_branch_on_count_reg) Optimization |
8fb42bbc | 1068 | Replace add, compare, branch with branch on count register. |
ecdb6d1a | 1069 | |
1070 | fbranch-probabilities | |
87c75316 | 1071 | Common Report Var(flag_branch_probabilities) Optimization |
8fb42bbc | 1072 | Use profiling information for branch probabilities. |
ecdb6d1a | 1073 | |
1e06725a | 1074 | fbranch-target-load-optimize |
87c75316 | 1075 | Common Report Var(flag_branch_target_load_optimize) Optimization |
8fb42bbc | 1076 | Perform branch target load optimization before prologue / epilogue threading. |
1e06725a | 1077 | |
1078 | fbranch-target-load-optimize2 | |
87c75316 | 1079 | Common Report Var(flag_branch_target_load_optimize2) Optimization |
8fb42bbc | 1080 | Perform branch target load optimization after prologue / epilogue threading. |
1e06725a | 1081 | |
08d163a9 | 1082 | fbtr-bb-exclusive |
87c75316 | 1083 | Common Report Var(flag_btr_bb_exclusive) Optimization |
8fb42bbc | 1084 | Restrict target load migration not to re-use registers in any basic block. |
08d163a9 | 1085 | |
941a4893 | 1086 | fcall-saved- |
f0da0668 | 1087 | Common Joined RejectNegative Var(common_deferred_options) Defer |
8fb42bbc | 1088 | -fcall-saved-<register> Mark <register> as being preserved across functions. |
941a4893 | 1089 | |
1090 | fcall-used- | |
f0da0668 | 1091 | Common Joined RejectNegative Var(common_deferred_options) Defer |
8fb42bbc | 1092 | -fcall-used-<register> Mark <register> as being corrupted by function calls. |
941a4893 | 1093 | |
82a16202 | 1094 | ; Nonzero for -fcaller-saves: allocate values in regs that need to |
1095 | ; be saved across function calls, if that produces overall better code. | |
1096 | ; Optional now, so people can test it. | |
1e06725a | 1097 | fcaller-saves |
87c75316 | 1098 | Common Report Var(flag_caller_saves) Optimization |
8fb42bbc | 1099 | Save registers around function calls. |
1e06725a | 1100 | |
355572cc | 1101 | fcheck-data-deps |
0c46a085 | 1102 | Common Ignore |
0d8001a7 | 1103 | This switch is deprecated; do not use. |
355572cc | 1104 | |
0b7282f1 | 1105 | fcheck-new |
1106 | Common Var(flag_check_new) | |
8fb42bbc | 1107 | Check the return value of new in C++. |
0b7282f1 | 1108 | |
92deda7a | 1109 | fchecking |
9ccb8d8d | 1110 | Common Var(flag_checking) Init(CHECKING_P ? ENABLE_EXTRA_CHECKING ? 2 : 1 : 0) |
92deda7a | 1111 | Perform internal consistency checkings. |
1112 | ||
c05979a1 | 1113 | fchecking= |
1114 | Common Joined RejectNegative UInteger Var(flag_checking) | |
1115 | Perform internal consistency checkings. | |
1116 | ||
ad010d47 | 1117 | fcode-hoisting |
1118 | Common Report Var(flag_code_hoisting) Optimization | |
1119 | Enable code hoisting. | |
1120 | ||
bbb0a662 | 1121 | fcombine-stack-adjustments |
1122 | Common Report Var(flag_combine_stack_adjustments) Optimization | |
1123 | Looks for opportunities to reduce stack adjustments and stack references. | |
1124 | ||
ecdb6d1a | 1125 | fcommon |
bfedbed1 | 1126 | Common Report Var(flag_no_common,0) |
8fb42bbc | 1127 | Do not put uninitialized globals in the common section. |
ecdb6d1a | 1128 | |
e28aa114 | 1129 | fcompare-debug |
1130 | Driver | |
1131 | ; Converted by the driver to -fcompare-debug= options. | |
1132 | ||
71278019 | 1133 | fcompare-debug= |
e28aa114 | 1134 | Common Driver JoinedOrMissing RejectNegative Var(flag_compare_debug_opt) |
8fb42bbc | 1135 | -fcompare-debug[=<opts>] Compile with and without e.g. -gtoggle, and compare the final-insns dump. |
71278019 | 1136 | |
1137 | fcompare-debug-second | |
ab3728ee | 1138 | Common Driver RejectNegative Var(flag_compare_debug) |
8fb42bbc | 1139 | Run only the second compilation of -fcompare-debug. |
71278019 | 1140 | |
a50372fe | 1141 | fcompare-elim |
1142 | Common Report Var(flag_compare_elim_after_reload) Optimization | |
8fb42bbc | 1143 | Perform comparison elimination after register allocation has finished. |
a50372fe | 1144 | |
9845d120 | 1145 | fconserve-stack |
1146 | Common Var(flag_conserve_stack) Optimization | |
8fb42bbc | 1147 | Do not perform optimizations increasing noticeably stack usage. |
9845d120 | 1148 | |
ecdb6d1a | 1149 | fcprop-registers |
87c75316 | 1150 | Common Report Var(flag_cprop_registers) Optimization |
8fb42bbc | 1151 | Perform a register copy-propagation optimization pass. |
ecdb6d1a | 1152 | |
1e06725a | 1153 | fcrossjumping |
87c75316 | 1154 | Common Report Var(flag_crossjumping) Optimization |
8fb42bbc | 1155 | Perform cross-jumping optimization. |
1e06725a | 1156 | |
1157 | fcse-follow-jumps | |
87c75316 | 1158 | Common Report Var(flag_cse_follow_jumps) Optimization |
8fb42bbc | 1159 | When running CSE, follow jumps to their targets. |
1e06725a | 1160 | |
1161 | fcse-skip-blocks | |
3b0273a1 | 1162 | Common Ignore |
d743aba2 | 1163 | Does nothing. Preserved for backward compatibility. |
1e06725a | 1164 | |
45b9d334 | 1165 | fcx-limited-range |
ecee1b29 | 1166 | Common Report Var(flag_cx_limited_range) Optimization SetByCombined |
8fb42bbc | 1167 | Omit range reduction step when performing complex division. |
45b9d334 | 1168 | |
608256a0 | 1169 | fcx-fortran-rules |
1170 | Common Report Var(flag_cx_fortran_rules) Optimization | |
8fb42bbc | 1171 | Complex multiplication and division follow Fortran rules. |
608256a0 | 1172 | |
ecdb6d1a | 1173 | fdata-sections |
bfedbed1 | 1174 | Common Report Var(flag_data_sections) |
8fb42bbc | 1175 | Place data items into their own section. |
ecdb6d1a | 1176 | |
d2153a46 | 1177 | fdbg-cnt-list |
9faf44d6 | 1178 | Common Report Var(common_deferred_options) Defer |
d2153a46 | 1179 | List all available debugging counters with their limits and counts. |
1180 | ||
3072d30e | 1181 | fdbg-cnt= |
9faf44d6 | 1182 | Common RejectNegative Joined Var(common_deferred_options) Defer |
795785e1 | 1183 | -fdbg-cnt=<counter>[:<lower_limit>]:<upper_limit>[,<counter>:...] Set the debug counter limit. |
3072d30e | 1184 | |
5f1f2de5 | 1185 | fdebug-prefix-map= |
9faf44d6 | 1186 | Common Joined RejectNegative Var(common_deferred_options) Defer |
859b51f8 | 1187 | -fdebug-prefix-map=<old>=<new> Map one directory name to another in debug information. |
1188 | ||
1189 | ffile-prefix-map= | |
1190 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
1191 | -ffile-prefix-map=<old>=<new> Map one directory name to another in compilation result. | |
5f1f2de5 | 1192 | |
240a87ff | 1193 | fdebug-types-section |
052166fd | 1194 | Common Report Var(flag_debug_types_section) Init(0) |
240a87ff | 1195 | Output .debug_types section when using DWARF v4 debuginfo. |
1196 | ||
82a16202 | 1197 | ; Nonzero for -fdefer-pop: don't pop args after each function call |
1198 | ; instead save them up to pop many calls' args with one insns. | |
1e06725a | 1199 | fdefer-pop |
87c75316 | 1200 | Common Report Var(flag_defer_pop) Optimization |
8fb42bbc | 1201 | Defer popping functions args from stack until later. |
1e06725a | 1202 | |
1203 | fdelayed-branch | |
87c75316 | 1204 | Common Report Var(flag_delayed_branch) Optimization |
8fb42bbc | 1205 | Attempt to fill delay slots of branch instructions. |
1e06725a | 1206 | |
bc0dfc8d | 1207 | fdelete-dead-exceptions |
bfedbed1 | 1208 | Common Report Var(flag_delete_dead_exceptions) Init(0) Optimization |
8fb42bbc | 1209 | Delete dead instructions that may throw exceptions. |
bc0dfc8d | 1210 | |
1e06725a | 1211 | fdelete-null-pointer-checks |
2d66501e | 1212 | Common Report Var(flag_delete_null_pointer_checks) Init(-1) Optimization |
8fb42bbc | 1213 | Delete useless null pointer checks. |
1e06725a | 1214 | |
a8aa8251 | 1215 | fdevirtualize-at-ltrans |
1216 | Common Report Var(flag_ltrans_devirtualize) | |
8fb42bbc | 1217 | Stream extra data to support more aggressive devirtualization in LTO local transformation mode. |
a8aa8251 | 1218 | |
84f6cc40 | 1219 | fdevirtualize-speculatively |
1220 | Common Report Var(flag_devirtualize_speculatively) Optimization | |
8fb42bbc | 1221 | Perform speculative devirtualization. |
84f6cc40 | 1222 | |
0276be0c | 1223 | fdevirtualize |
1224 | Common Report Var(flag_devirtualize) Optimization | |
1225 | Try to convert virtual calls to direct ones. | |
1226 | ||
1e06725a | 1227 | fdiagnostics-show-location= |
d62a5950 | 1228 | Common Joined RejectNegative Enum(diagnostic_prefixing_rule) |
8fb42bbc | 1229 | -fdiagnostics-show-location=[once|every-line] How often to emit source location at the beginning of line-wrapped diagnostics. |
1e06725a | 1230 | |
d62a5950 | 1231 | ; Required for these enum values. |
1232 | SourceInclude | |
1233 | pretty-print.h | |
1234 | ||
1235 | Enum | |
1236 | Name(diagnostic_prefixing_rule) Type(int) | |
1237 | ||
1238 | EnumValue | |
1239 | Enum(diagnostic_prefixing_rule) String(once) Value(DIAGNOSTICS_SHOW_PREFIX_ONCE) | |
1240 | ||
1241 | EnumValue | |
1242 | Enum(diagnostic_prefixing_rule) String(every-line) Value(DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE) | |
1243 | ||
5a983084 | 1244 | fdiagnostics-show-caret |
1245 | Common Var(flag_diagnostics_show_caret) Init(1) | |
8fb42bbc | 1246 | Show the source line with a caret indicating the column. |
5a983084 | 1247 | |
b7bb5264 | 1248 | fdiagnostics-show-labels |
1249 | Common Var(flag_diagnostics_show_labels) Init(1) | |
1250 | Show labels annotating ranges of source code when showing source | |
1251 | ||
ff7410b8 | 1252 | fdiagnostics-show-line-numbers |
1253 | Common Var(flag_diagnostics_show_line_numbers) Init(1) | |
1254 | Show line numbers in the left margin when showing source | |
1255 | ||
41609f8b | 1256 | fdiagnostics-color |
1257 | Common Alias(fdiagnostics-color=,always,never) | |
1258 | ; | |
1259 | ||
1260 | fdiagnostics-color= | |
9b11544d | 1261 | Driver Common Joined RejectNegative Var(flag_diagnostics_show_color) Enum(diagnostic_color_rule) Init(DIAGNOSTICS_COLOR_NO) |
8fb42bbc | 1262 | -fdiagnostics-color=[never|always|auto] Colorize diagnostics. |
41609f8b | 1263 | |
1264 | ; Required for these enum values. | |
1265 | SourceInclude | |
1266 | diagnostic-color.h | |
1267 | ||
1268 | Enum | |
1269 | Name(diagnostic_color_rule) Type(int) | |
1270 | ||
1271 | EnumValue | |
1272 | Enum(diagnostic_color_rule) String(never) Value(DIAGNOSTICS_COLOR_NO) | |
1273 | ||
1274 | EnumValue | |
1275 | Enum(diagnostic_color_rule) String(always) Value(DIAGNOSTICS_COLOR_YES) | |
1276 | ||
1277 | EnumValue | |
1278 | Enum(diagnostic_color_rule) String(auto) Value(DIAGNOSTICS_COLOR_AUTO) | |
1279 | ||
1bcc5c64 | 1280 | fdiagnostics-format= |
1281 | Common Joined RejectNegative Enum(diagnostics_output_format) | |
1282 | -fdiagnostics-format=[text|json] Select output format | |
1283 | ||
1284 | ; Required for these enum values. | |
1285 | SourceInclude | |
1286 | diagnostic.h | |
1287 | ||
1288 | Enum | |
1289 | Name(diagnostics_output_format) Type(int) | |
1290 | ||
1291 | EnumValue | |
1292 | Enum(diagnostics_output_format) String(text) Value(DIAGNOSTICS_OUTPUT_FORMAT_TEXT) | |
1293 | ||
1294 | EnumValue | |
1295 | Enum(diagnostics_output_format) String(json) Value(DIAGNOSTICS_OUTPUT_FORMAT_JSON) | |
1296 | ||
6628b04d | 1297 | fdiagnostics-parseable-fixits |
1298 | Common Var(flag_diagnostics_parseable_fixits) | |
d00ce6b9 | 1299 | Print fix-it hints in machine-readable form. |
6628b04d | 1300 | |
40a431fa | 1301 | fdiagnostics-generate-patch |
1302 | Common Var(flag_diagnostics_generate_patch) | |
1303 | Print fix-it hints to stderr in unified diff format. | |
1304 | ||
efb9d9ee | 1305 | fdiagnostics-show-option |
3fee9a69 | 1306 | Common Var(flag_diagnostics_show_option) Init(1) |
8fb42bbc | 1307 | Amend appropriate diagnostic messages with the command line option that controls them. |
efb9d9ee | 1308 | |
31087b7e | 1309 | fdiagnostics-minimum-margin-width= |
1310 | Common Joined UInteger Var(diagnostics_minimum_margin_width) Init(6) | |
1311 | Set minimum width of left margin of source code when showing source | |
1312 | ||
c3087ce0 | 1313 | fdisable- |
1314 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
8fb42bbc | 1315 | -fdisable-[tree|rtl|ipa]-<pass>=range1+range2 disables an optimization pass. |
c3087ce0 | 1316 | |
1317 | fenable- | |
1318 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
8fb42bbc | 1319 | -fenable-[tree|rtl|ipa]-<pass>=range1+range2 enables an optimization pass. |
c3087ce0 | 1320 | |
4ee9c684 | 1321 | fdump- |
f0da0668 | 1322 | Common Joined RejectNegative Var(common_deferred_options) Defer |
8fb42bbc | 1323 | -fdump-<type> Dump various compiler internals to a file. |
4ee9c684 | 1324 | |
0b1d266f | 1325 | fdump-final-insns |
1326 | Driver RejectNegative | |
1327 | ||
71278019 | 1328 | fdump-final-insns= |
1329 | Common RejectNegative Joined Var(flag_dump_final_insns) | |
8fb42bbc | 1330 | -fdump-final-insns=filename Dump to filename the insns at the end of translation. |
71278019 | 1331 | |
929d2a90 | 1332 | fdump-go-spec= |
1333 | Common RejectNegative Joined Var(flag_dump_go_spec) | |
8fb42bbc | 1334 | -fdump-go-spec=filename Write all declarations to file as Go code. |
929d2a90 | 1335 | |
969239ad | 1336 | fdump-noaddr |
1337 | Common Report Var(flag_dump_noaddr) | |
8fb42bbc | 1338 | Suppress output of addresses in debugging dumps. |
969239ad | 1339 | |
a31e9496 | 1340 | freport-bug |
1341 | Common Driver Var(flag_report_bug) | |
1342 | Collect and dump debug information into temporary file if ICE in C/C++ | |
d0abd9e0 | 1343 | compiler occurred. |
a31e9496 | 1344 | |
28f17529 | 1345 | fdump-internal-locations |
1346 | Common Var(flag_dump_locations) Init(0) | |
8fb42bbc | 1347 | Dump detailed information on GCC's internal representation of source code locations. |
28f17529 | 1348 | |
ec4791a8 | 1349 | fdump-passes |
1350 | Common Var(flag_dump_passes) Init(0) | |
8fb42bbc | 1351 | Dump optimization passes. |
ec4791a8 | 1352 | |
ecdb6d1a | 1353 | fdump-unnumbered |
0f8defe5 | 1354 | Common Report Var(flag_dump_unnumbered) |
8fb42bbc | 1355 | Suppress output of instruction numbers, line number notes and addresses in debugging dumps. |
ecdb6d1a | 1356 | |
0a59e439 | 1357 | fdump-unnumbered-links |
0f8defe5 | 1358 | Common Report Var(flag_dump_unnumbered_links) |
8fb42bbc | 1359 | Suppress output of previous and next insn numbers in debugging dumps. |
0a59e439 | 1360 | |
9845d120 | 1361 | fdwarf2-cfi-asm |
1362 | Common Report Var(flag_dwarf2_cfi_asm) Init(HAVE_GAS_CFI_DIRECTIVE) | |
1363 | Enable CFI tables via GAS assembler directives. | |
1364 | ||
f1aa280c | 1365 | fearly-inlining |
87c75316 | 1366 | Common Report Var(flag_early_inlining) Init(1) Optimization |
8fb42bbc | 1367 | Perform early inlining. |
f1aa280c | 1368 | |
1e06725a | 1369 | feliminate-dwarf2-dups |
1734e8a0 | 1370 | Common Ignore |
1371 | Does nothing. Preserved for backward compatibility. | |
1e06725a | 1372 | |
2f29eac3 | 1373 | fipa-sra |
1374 | Common Report Var(flag_ipa_sra) Init(0) Optimization | |
8fb42bbc | 1375 | Perform interprocedural reduction of aggregates. |
2f29eac3 | 1376 | |
262444a6 | 1377 | feliminate-unused-debug-symbols |
2e9da478 | 1378 | Common Report Var(flag_debug_only_used_symbols) |
8fb42bbc | 1379 | Perform unused symbol elimination in debug info. |
262444a6 | 1380 | |
1e06725a | 1381 | feliminate-unused-debug-types |
2e9da478 | 1382 | Common Report Var(flag_eliminate_unused_debug_types) Init(1) |
8fb42bbc | 1383 | Perform unused type elimination in debug info. |
1e06725a | 1384 | |
0c573f98 | 1385 | femit-class-debug-always |
fd5e1dfe | 1386 | Common Report Var(flag_emit_class_debug_always) Init(0) |
0c573f98 | 1387 | Do not suppress C++ class debug information. |
1388 | ||
ecdb6d1a | 1389 | fexceptions |
87c75316 | 1390 | Common Report Var(flag_exceptions) Optimization |
8fb42bbc | 1391 | Enable exception handling. |
ecdb6d1a | 1392 | |
1e06725a | 1393 | fexpensive-optimizations |
87c75316 | 1394 | Common Report Var(flag_expensive_optimizations) Optimization |
8fb42bbc | 1395 | Perform a number of minor, expensive optimizations. |
1e06725a | 1396 | |
c6418a4e | 1397 | fexcess-precision= |
9660cb79 | 1398 | Common Joined RejectNegative Enum(excess_precision) Var(flag_excess_precision_cmdline) Init(EXCESS_PRECISION_DEFAULT) SetByCombined |
8fb42bbc | 1399 | -fexcess-precision=[fast|standard] Specify handling of excess floating-point precision. |
c6418a4e | 1400 | |
d62a5950 | 1401 | Enum |
1402 | Name(excess_precision) Type(enum excess_precision) UnknownError(unknown excess precision style %qs) | |
1403 | ||
1404 | EnumValue | |
1405 | Enum(excess_precision) String(fast) Value(EXCESS_PRECISION_FAST) | |
1406 | ||
1407 | EnumValue | |
1408 | Enum(excess_precision) String(standard) Value(EXCESS_PRECISION_STANDARD) | |
1409 | ||
a998ac00 | 1410 | ; Whether we permit the extended set of values for FLT_EVAL_METHOD |
1411 | ; introduced in ISO/IEC TS 18661-3, or limit ourselves to those in C99/C11. | |
1412 | fpermitted-flt-eval-methods= | |
1413 | Common Joined RejectNegative Enum(permitted_flt_eval_methods) Var(flag_permitted_flt_eval_methods) Init(PERMITTED_FLT_EVAL_METHODS_DEFAULT) | |
1414 | -fpermitted-flt-eval-methods=[c11|ts-18661] Specify which values of FLT_EVAL_METHOD are permitted. | |
1415 | ||
1416 | Enum | |
1417 | Name(permitted_flt_eval_methods) Type(enum permitted_flt_eval_methods) UnknownError(unknown specification for the set of FLT_EVAL_METHOD values to permit %qs) | |
1418 | ||
1419 | EnumValue | |
1420 | Enum(permitted_flt_eval_methods) String(c11) Value(PERMITTED_FLT_EVAL_METHODS_C11) | |
1421 | ||
1422 | EnumValue | |
1423 | Enum(permitted_flt_eval_methods) String(ts-18661-3) Value(PERMITTED_FLT_EVAL_METHODS_TS_18661) | |
1424 | ||
941a4893 | 1425 | ffast-math |
b032c4dd | 1426 | Common Optimization |
941a4893 | 1427 | |
b33542ab | 1428 | ffat-lto-objects |
76eca1df | 1429 | Common Var(flag_fat_lto_objects) |
b33542ab | 1430 | Output lto objects containing both the intermediate language and binary output. |
1431 | ||
ecdb6d1a | 1432 | ffinite-math-only |
ecee1b29 | 1433 | Common Report Var(flag_finite_math_only) Optimization SetByCombined |
8fb42bbc | 1434 | Assume no NaNs or infinities are generated. |
ecdb6d1a | 1435 | |
941a4893 | 1436 | ffixed- |
f0da0668 | 1437 | Common Joined RejectNegative Var(common_deferred_options) Defer |
8fb42bbc | 1438 | -ffixed-<register> Mark <register> as being unavailable to the compiler. |
941a4893 | 1439 | |
1e06725a | 1440 | ffloat-store |
87c75316 | 1441 | Common Report Var(flag_float_store) Optimization |
8fb42bbc | 1442 | Don't allocate floats and doubles in extended-precision registers. |
1e06725a | 1443 | |
1444 | fforce-addr | |
3b0273a1 | 1445 | Common Ignore |
4d25f9eb | 1446 | Does nothing. Preserved for backward compatibility. |
1e06725a | 1447 | |
55d51835 | 1448 | fforward-propagate |
1449 | Common Report Var(flag_forward_propagate) Optimization | |
8fb42bbc | 1450 | Perform a forward propagation pass on RTL. |
42a3a38b | 1451 | |
b9be572e | 1452 | ffp-contract= |
b92389a6 | 1453 | Common Joined RejectNegative Enum(fp_contract_mode) Var(flag_fp_contract_mode) Init(FP_CONTRACT_FAST) Optimization |
6ac368bb | 1454 | -ffp-contract=[off|on|fast] Perform floating-point expression contraction. |
b9be572e | 1455 | |
d62a5950 | 1456 | Enum |
1457 | Name(fp_contract_mode) Type(enum fp_contract_mode) UnknownError(unknown floating point contraction style %qs) | |
1458 | ||
1459 | EnumValue | |
1460 | Enum(fp_contract_mode) String(off) Value(FP_CONTRACT_OFF) | |
1461 | ||
1462 | ; Not implemented, fall back to conservative FP_CONTRACT_OFF. | |
1463 | EnumValue | |
1464 | Enum(fp_contract_mode) String(on) Value(FP_CONTRACT_OFF) | |
1465 | ||
1466 | EnumValue | |
1467 | Enum(fp_contract_mode) String(fast) Value(FP_CONTRACT_FAST) | |
1468 | ||
20702ea3 | 1469 | ffp-int-builtin-inexact |
1470 | Common Report Var(flag_fp_int_builtin_inexact) Init(1) Optimization | |
1471 | Allow built-in functions ceil, floor, round, trunc to raise \"inexact\" exceptions. | |
1472 | ||
82a16202 | 1473 | ; Nonzero means don't put addresses of constant functions in registers. |
1474 | ; Used for compiling the Unix kernel, where strange substitutions are | |
1475 | ; done on the assembly output. | |
1e06725a | 1476 | ffunction-cse |
bfedbed1 | 1477 | Common Report Var(flag_no_function_cse,0) Optimization |
8fb42bbc | 1478 | Allow function addresses to be held in registers. |
1e06725a | 1479 | |
ecdb6d1a | 1480 | ffunction-sections |
2e9da478 | 1481 | Common Report Var(flag_function_sections) |
8fb42bbc | 1482 | Place each function into its own section. |
ecdb6d1a | 1483 | |
1e06725a | 1484 | fgcse |
87c75316 | 1485 | Common Report Var(flag_gcse) Optimization |
8fb42bbc | 1486 | Perform global common subexpression elimination. |
1e06725a | 1487 | |
1488 | fgcse-lm | |
87c75316 | 1489 | Common Report Var(flag_gcse_lm) Init(1) Optimization |
8fb42bbc | 1490 | Perform enhanced load motion during global common subexpression elimination. |
1e06725a | 1491 | |
1492 | fgcse-sm | |
87c75316 | 1493 | Common Report Var(flag_gcse_sm) Init(0) Optimization |
8fb42bbc | 1494 | Perform store motion after global common subexpression elimination. |
1e06725a | 1495 | |
5c47e414 | 1496 | fgcse-las |
87c75316 | 1497 | Common Report Var(flag_gcse_las) Init(0) Optimization |
839f8415 | 1498 | Perform redundant load after store elimination in global common subexpression |
8fb42bbc | 1499 | elimination. |
839f8415 | 1500 | |
1501 | fgcse-after-reload | |
87c75316 | 1502 | Common Report Var(flag_gcse_after_reload) Optimization |
8fb42bbc | 1503 | Perform global common subexpression elimination after register allocation has |
1504 | finished. | |
5c47e414 | 1505 | |
f78f10d6 | 1506 | Enum |
1507 | Name(dwarf_gnat_encodings) Type(int) | |
1508 | ||
1509 | EnumValue | |
1510 | Enum(dwarf_gnat_encodings) String(all) Value(DWARF_GNAT_ENCODINGS_ALL) | |
1511 | ||
1512 | EnumValue | |
1513 | Enum(dwarf_gnat_encodings) String(gdb) Value(DWARF_GNAT_ENCODINGS_GDB) | |
1514 | ||
1515 | EnumValue | |
1516 | Enum(dwarf_gnat_encodings) String(minimal) Value(DWARF_GNAT_ENCODINGS_MINIMAL) | |
1517 | ||
1518 | fgnat-encodings= | |
1519 | Common Enum(dwarf_gnat_encodings) Joined RejectNegative Report Undocumented Var(gnat_encodings) | |
1520 | -fgnat-encodings=[all|gdb|minimal] Select the balance between GNAT encodings and standard DWARF emitted in the debug information | |
1521 | ||
d3399492 | 1522 | ; This option is not documented yet as its semantics will change. |
255b6be7 | 1523 | fgraphite |
f36e946d | 1524 | Common Report Var(flag_graphite) Optimization |
8fb42bbc | 1525 | Enable in and out of Graphite representation. |
255b6be7 | 1526 | |
26c166eb | 1527 | fgraphite-identity |
1528 | Common Report Var(flag_graphite_identity) Optimization | |
8fb42bbc | 1529 | Enable Graphite Identity transformation. |
26c166eb | 1530 | |
239e9670 | 1531 | fhoist-adjacent-loads |
1532 | Common Report Var(flag_hoist_adjacent_loads) Optimization | |
1533 | Enable hoisting adjacent loads to encourage generating conditional move | |
8fb42bbc | 1534 | instructions. |
239e9670 | 1535 | |
5068be18 | 1536 | fkeep-gc-roots-live |
1537 | Common Undocumented Report Var(flag_keep_gc_roots_live) Optimization | |
1538 | ; Always keep a pointer to a live memory block | |
1539 | ||
16848556 | 1540 | floop-parallelize-all |
1541 | Common Report Var(flag_loop_parallelize_all) Optimization | |
8fb42bbc | 1542 | Mark all loops as parallel. |
26c166eb | 1543 | |
255b6be7 | 1544 | floop-strip-mine |
4cc0f4e2 | 1545 | Common Alias(floop-nest-optimize) |
8fb42bbc | 1546 | Enable loop nest transforms. Same as -floop-nest-optimize. |
255b6be7 | 1547 | |
1548 | floop-interchange | |
5051abaf | 1549 | Common Report Var(flag_loop_interchange) Optimization |
1550 | Enable loop interchange on trees. | |
255b6be7 | 1551 | |
1552 | floop-block | |
4cc0f4e2 | 1553 | Common Alias(floop-nest-optimize) |
8fb42bbc | 1554 | Enable loop nest transforms. Same as -floop-nest-optimize. |
255b6be7 | 1555 | |
120092dd | 1556 | floop-unroll-and-jam |
83d3a417 | 1557 | Common Report Var(flag_unroll_jam) Optimization |
1558 | Perform unroll-and-jam on loops. | |
8fb42bbc | 1559 | |
4c0315d0 | 1560 | fgnu-tm |
1561 | Common Report Var(flag_tm) | |
8fb42bbc | 1562 | Enable support for GNU transactional memory. |
4c0315d0 | 1563 | |
6d5d95d6 | 1564 | fgnu-unique |
1565 | Common Report Var(flag_gnu_unique) Init(1) | |
8fb42bbc | 1566 | Use STB_GNU_UNIQUE if supported by the assembler. |
6d5d95d6 | 1567 | |
d60a90cc | 1568 | floop-flatten |
d094f1d6 | 1569 | Common Ignore |
1570 | Does nothing. Preserved for backward compatibility. | |
d60a90cc | 1571 | |
89049f25 | 1572 | floop-nest-optimize |
b3de8ca0 | 1573 | Common Report Var(flag_loop_nest_optimize) Optimization |
71130ef8 | 1574 | Enable the loop nest optimizer. |
89049f25 | 1575 | |
a420d927 | 1576 | fstrict-volatile-bitfields |
bfedbed1 | 1577 | Common Report Var(flag_strict_volatile_bitfields) Init(-1) Optimization |
8fb42bbc | 1578 | Force bitfield accesses to match their type width. |
a420d927 | 1579 | |
3d3e04ac | 1580 | fstore-merging |
1581 | Common Report Var(flag_store_merging) Optimization | |
1582 | Merge adjacent stores. | |
1583 | ||
ecdb6d1a | 1584 | fguess-branch-probability |
87c75316 | 1585 | Common Report Var(flag_guess_branch_prob) Optimization |
8fb42bbc | 1586 | Enable guessing of branch probabilities. |
ecdb6d1a | 1587 | |
82a16202 | 1588 | ; Nonzero means ignore `#ident' directives. 0 means handle them. |
1589 | ; Generate position-independent code for executables if possible | |
1590 | ; On SVR4 targets, it also controls whether or not to emit a | |
1591 | ; string identifying the compiler. | |
ecdb6d1a | 1592 | fident |
2e9da478 | 1593 | Common Report Var(flag_no_ident,0) |
8fb42bbc | 1594 | Process #ident directives. |
ecdb6d1a | 1595 | |
1e06725a | 1596 | fif-conversion |
87c75316 | 1597 | Common Report Var(flag_if_conversion) Optimization |
8fb42bbc | 1598 | Perform conversion of conditional jumps to branchless equivalents. |
1e06725a | 1599 | |
1600 | fif-conversion2 | |
87c75316 | 1601 | Common Report Var(flag_if_conversion2) Optimization |
8fb42bbc | 1602 | Perform conversion of conditional jumps to conditional execution. |
1e06725a | 1603 | |
5680e508 | 1604 | fstack-reuse= |
e137219a | 1605 | Common Joined RejectNegative Enum(stack_reuse_level) Var(flag_stack_reuse) Init(SR_ALL) Optimization |
6ac368bb | 1606 | -fstack-reuse=[all|named_vars|none] Set stack reuse level for local variables. |
5680e508 | 1607 | |
1608 | Enum | |
1609 | Name(stack_reuse_level) Type(enum stack_reuse_level) UnknownError(unknown Stack Reuse Level %qs) | |
1610 | ||
1611 | EnumValue | |
1612 | Enum(stack_reuse_level) String(all) Value(SR_ALL) | |
1613 | ||
1614 | EnumValue | |
1615 | Enum(stack_reuse_level) String(named_vars) Value(SR_NAMED_VARS) | |
1616 | ||
1617 | EnumValue | |
1618 | Enum(stack_reuse_level) String(none) Value(SR_NONE) | |
1619 | ||
0cb1935d | 1620 | ftree-loop-if-convert |
1621 | Common Report Var(flag_tree_loop_if_convert) Init(-1) Optimization | |
8fb42bbc | 1622 | Convert conditional jumps in innermost loops to branchless equivalents. |
0cb1935d | 1623 | |
3b91ccd9 | 1624 | ftree-loop-if-convert-stores |
b6f4c9b5 | 1625 | Common Ignore |
1626 | Does nothing. Preserved for backward compatibility. | |
3b91ccd9 | 1627 | |
82a16202 | 1628 | ; -finhibit-size-directive inhibits output of .size for ELF. |
1629 | ; This is used only for compiling crtstuff.c, | |
1630 | ; and it may be extended to other effects | |
1631 | ; needed for crtstuff.c on other systems. | |
ecdb6d1a | 1632 | finhibit-size-directive |
2e9da478 | 1633 | Common Report Var(flag_inhibit_size_directive) |
8fb42bbc | 1634 | Do not generate .size directives. |
ecdb6d1a | 1635 | |
f8daee9b | 1636 | findirect-inlining |
d1f68cd8 | 1637 | Common Report Var(flag_indirect_inlining) Optimization |
8fb42bbc | 1638 | Perform indirect inlining. |
f8daee9b | 1639 | |
b75cad1f | 1640 | ; General flag to enable inlining. Specifying -fno-inline will disable |
1641 | ; all inlining apart from always-inline functions. | |
1e06725a | 1642 | finline |
e5166d71 | 1643 | Common Report Var(flag_no_inline,0) Init(0) Optimization |
8fb42bbc | 1644 | Enable inlining of function declared \"inline\", disabling disables all inlining. |
1e06725a | 1645 | |
b97510b2 | 1646 | finline-small-functions |
1647 | Common Report Var(flag_inline_small_functions) Optimization | |
8fb42bbc | 1648 | Integrate functions into their callers when code size is known not to grow. |
b97510b2 | 1649 | |
1e06725a | 1650 | finline-functions |
87c75316 | 1651 | Common Report Var(flag_inline_functions) Optimization |
8fb42bbc | 1652 | Integrate functions not declared \"inline\" into their callers when profitable. |
1e06725a | 1653 | |
f1aa280c | 1654 | finline-functions-called-once |
055af069 | 1655 | Common Report Var(flag_inline_functions_called_once) Optimization |
8fb42bbc | 1656 | Integrate functions only required by their single caller. |
9e0baf4d | 1657 | |
39470ac3 | 1658 | finline-limit- |
67089c6b | 1659 | Common RejectNegative Joined Alias(finline-limit=) |
39470ac3 | 1660 | |
1661 | finline-limit= | |
1662 | Common RejectNegative Joined UInteger | |
8fb42bbc | 1663 | -finline-limit=<number> Limit the size of inlined functions to <number>. |
39470ac3 | 1664 | |
1cd6e20d | 1665 | finline-atomics |
1666 | Common Report Var(flag_inline_atomics) Init(1) Optimization | |
1667 | Inline __atomic operations when a lock free instruction sequence is available. | |
1668 | ||
3c0f15b4 | 1669 | fcf-protection |
1670 | Common RejectNegative Alias(fcf-protection=,full) | |
1671 | ||
1672 | fcf-protection= | |
1673 | Common Report Joined RejectNegative Enum(cf_protection_level) Var(flag_cf_protection) Init(CF_NONE) | |
1674 | -fcf-protection=[full|branch|return|none] Instrument functions with checks to verify jump/call/return control-flow transfer | |
1675 | instructions have valid targets. | |
1676 | ||
1677 | Enum | |
dc4ed9fd | 1678 | Name(cf_protection_level) Type(enum cf_protection_level) UnknownError(unknown Control-Flow Protection Level %qs) |
3c0f15b4 | 1679 | |
1680 | EnumValue | |
1681 | Enum(cf_protection_level) String(full) Value(CF_FULL) | |
1682 | ||
1683 | EnumValue | |
1684 | Enum(cf_protection_level) String(branch) Value(CF_BRANCH) | |
1685 | ||
1686 | EnumValue | |
1687 | Enum(cf_protection_level) String(return) Value(CF_RETURN) | |
1688 | ||
1689 | EnumValue | |
1690 | Enum(cf_protection_level) String(none) Value(CF_NONE) | |
1691 | ||
ecdb6d1a | 1692 | finstrument-functions |
2e9da478 | 1693 | Common Report Var(flag_instrument_function_entry_exit) |
8fb42bbc | 1694 | Instrument function entry and exit with profiling calls. |
ecdb6d1a | 1695 | |
a95c0776 | 1696 | finstrument-functions-exclude-function-list= |
1697 | Common RejectNegative Joined | |
8fb42bbc | 1698 | -finstrument-functions-exclude-function-list=name,... Do not instrument listed functions. |
a95c0776 | 1699 | |
1700 | finstrument-functions-exclude-file-list= | |
1701 | Common RejectNegative Joined | |
8fb42bbc | 1702 | -finstrument-functions-exclude-file-list=filename,... Do not instrument functions listed in files. |
a95c0776 | 1703 | |
a17a73c7 | 1704 | fipa-cp |
87c75316 | 1705 | Common Report Var(flag_ipa_cp) Optimization |
8fb42bbc | 1706 | Perform interprocedural constant propagation. |
a17a73c7 | 1707 | |
2a15795f | 1708 | fipa-cp-clone |
1709 | Common Report Var(flag_ipa_cp_clone) Optimization | |
8fb42bbc | 1710 | Perform cloning to make Interprocedural constant propagation stronger. |
2a15795f | 1711 | |
7715e0c8 | 1712 | fipa-cp-alignment |
afdf4bf2 | 1713 | Common Ignore |
1714 | Does nothing. Preserved for backward compatibility. | |
7715e0c8 | 1715 | |
a54071b2 | 1716 | fipa-bit-cp |
1717 | Common Report Var(flag_ipa_bit_cp) Optimization | |
1718 | Perform interprocedural bitwise constant propagation. | |
1719 | ||
4e2db0ad | 1720 | fipa-profile |
1721 | Common Report Var(flag_ipa_profile) Init(0) Optimization | |
8fb42bbc | 1722 | Perform interprocedural profile propagation. |
f7d118a9 | 1723 | |
bdf4f142 | 1724 | fipa-pta |
87c75316 | 1725 | Common Report Var(flag_ipa_pta) Init(0) Optimization |
8fb42bbc | 1726 | Perform interprocedural points-to analysis. |
bdf4f142 | 1727 | |
4e2db0ad | 1728 | fipa-pure-const |
1729 | Common Report Var(flag_ipa_pure_const) Init(0) Optimization | |
8fb42bbc | 1730 | Discover pure and const functions. |
4e2db0ad | 1731 | |
52200d03 | 1732 | fipa-icf |
1733 | Common Report Var(flag_ipa_icf) Optimization | |
8fb42bbc | 1734 | Perform Identical Code Folding for functions and read-only variables. |
52200d03 | 1735 | |
1736 | fipa-icf-functions | |
1737 | Common Report Var(flag_ipa_icf_functions) Optimization | |
8fb42bbc | 1738 | Perform Identical Code Folding for functions. |
52200d03 | 1739 | |
1740 | fipa-icf-variables | |
131ad74b | 1741 | Common Report Var(flag_ipa_icf_variables) Optimization |
8fb42bbc | 1742 | Perform Identical Code Folding for variables. |
52200d03 | 1743 | |
f7d118a9 | 1744 | fipa-reference |
87c75316 | 1745 | Common Report Var(flag_ipa_reference) Init(0) Optimization |
8c8b8b86 | 1746 | Discover read-only and non addressable static variables. |
1747 | ||
1748 | fipa-reference-addressable | |
1749 | Common Report Var(flag_ipa_reference_addressable) Init(0) Optimization | |
1750 | Discover read-only, write-only and non-addressable static variables. | |
f7d118a9 | 1751 | |
51bdb99d | 1752 | fipa-stack-alignment |
1753 | Common Report Var(flag_ipa_stack_alignment) Init(1) Optimization | |
1754 | Reduce stack alignment on call sites if possible. | |
1755 | ||
604cde73 | 1756 | fipa-matrix-reorg |
fa62b5da | 1757 | Common Ignore |
1758 | Does nothing. Preserved for backward compatibility. | |
604cde73 | 1759 | |
f27ac341 | 1760 | fipa-struct-reorg |
210a8eb6 | 1761 | Common Ignore |
1762 | Does nothing. Preserved for backward compatibility. | |
f27ac341 | 1763 | |
25a8e007 | 1764 | fipa-vrp |
1765 | Common Report Var(flag_ipa_vrp) Optimization | |
1766 | Perform IPA Value Range Propagation. | |
1767 | ||
47dd2e78 | 1768 | fira-algorithm= |
bfedbed1 | 1769 | Common Joined RejectNegative Enum(ira_algorithm) Var(flag_ira_algorithm) Init(IRA_ALGORITHM_CB) Optimization |
6ac368bb | 1770 | -fira-algorithm=[CB|priority] Set the used IRA algorithm. |
14792f4e | 1771 | |
d62a5950 | 1772 | Enum |
1773 | Name(ira_algorithm) Type(enum ira_algorithm) UnknownError(unknown IRA algorithm %qs) | |
1774 | ||
1775 | EnumValue | |
1776 | Enum(ira_algorithm) String(CB) Value(IRA_ALGORITHM_CB) | |
1777 | ||
1778 | EnumValue | |
1779 | Enum(ira_algorithm) String(priority) Value(IRA_ALGORITHM_PRIORITY) | |
1780 | ||
14792f4e | 1781 | fira-region= |
bfedbed1 | 1782 | Common Joined RejectNegative Enum(ira_region) Var(flag_ira_region) Init(IRA_REGION_AUTODETECT) Optimization |
6ac368bb | 1783 | -fira-region=[one|all|mixed] Set regions for IRA. |
47dd2e78 | 1784 | |
d62a5950 | 1785 | Enum |
1786 | Name(ira_region) Type(enum ira_region) UnknownError(unknown IRA region %qs) | |
1787 | ||
1788 | EnumValue | |
1789 | Enum(ira_region) String(one) Value(IRA_REGION_ONE) | |
1790 | ||
1791 | EnumValue | |
1792 | Enum(ira_region) String(all) Value(IRA_REGION_ALL) | |
1793 | ||
1794 | EnumValue | |
1795 | Enum(ira_region) String(mixed) Value(IRA_REGION_MIXED) | |
1796 | ||
1ec78e16 | 1797 | fira-hoist-pressure |
1798 | Common Report Var(flag_ira_hoist_pressure) Init(1) Optimization | |
1799 | Use IRA based register pressure calculation | |
1800 | in RTL hoist optimizations. | |
1801 | ||
e8eed2f8 | 1802 | fira-loop-pressure |
155354e5 | 1803 | Common Report Var(flag_ira_loop_pressure) Optimization |
e8eed2f8 | 1804 | Use IRA based register pressure calculation |
1805 | in RTL loop optimizations. | |
1806 | ||
47dd2e78 | 1807 | fira-share-save-slots |
bfedbed1 | 1808 | Common Report Var(flag_ira_share_save_slots) Init(1) Optimization |
47dd2e78 | 1809 | Share slots for saving different hard registers. |
1810 | ||
1811 | fira-share-spill-slots | |
bfedbed1 | 1812 | Common Report Var(flag_ira_share_spill_slots) Init(1) Optimization |
47dd2e78 | 1813 | Share stack slots for spilled pseudo-registers. |
1814 | ||
1815 | fira-verbose= | |
4aafe913 | 1816 | Common RejectNegative Joined UInteger Var(flag_ira_verbose) Init(5) |
cf210371 | 1817 | -fira-verbose=<number> Control IRA's level of diagnostic messages. |
47dd2e78 | 1818 | |
dec41e98 | 1819 | fivopts |
87c75316 | 1820 | Common Report Var(flag_ivopts) Init(1) Optimization |
8fb42bbc | 1821 | Optimize induction variables on trees. |
dec41e98 | 1822 | |
51d8e657 | 1823 | fjump-tables |
87c75316 | 1824 | Common Var(flag_jump_tables) Init(1) Optimization |
8fb42bbc | 1825 | Use jump tables for sufficiently large switch statements. |
51d8e657 | 1826 | |
1e06725a | 1827 | fkeep-inline-functions |
2e9da478 | 1828 | Common Report Var(flag_keep_inline_functions) |
8fb42bbc | 1829 | Generate code for functions even if they are fully inlined. |
1e06725a | 1830 | |
c071eedc | 1831 | fkeep-static-functions |
1832 | Common Report Var(flag_keep_static_functions) | |
8fb42bbc | 1833 | Generate code for static functions even if they are never called. |
c071eedc | 1834 | |
1e06725a | 1835 | fkeep-static-consts |
2e9da478 | 1836 | Common Report Var(flag_keep_static_consts) Init(1) |
8fb42bbc | 1837 | Emit static const variables even if they are not used. |
1e06725a | 1838 | |
ecdb6d1a | 1839 | fleading-underscore |
2e9da478 | 1840 | Common Report Var(flag_leading_underscore) Init(-1) |
8fb42bbc | 1841 | Give external symbols a leading underscore. |
ecdb6d1a | 1842 | |
4f87b914 | 1843 | floop-optimize |
3b0273a1 | 1844 | Common Ignore |
334ec2d8 | 1845 | Does nothing. Preserved for backward compatibility. |
4f87b914 | 1846 | |
497ba60f | 1847 | flra-remat |
1848 | Common Report Var(flag_lra_remat) Optimization | |
8fb42bbc | 1849 | Do CFG-sensitive rematerialization in LRA. |
497ba60f | 1850 | |
7bfefa9d | 1851 | flto |
cbcf2791 | 1852 | Common |
7bfefa9d | 1853 | Enable link-time optimization. |
1854 | ||
cbcf2791 | 1855 | flto= |
1856 | Common RejectNegative Joined Var(flag_lto) | |
1857 | Link-time optimization with number of parallel jobs or jobserver. | |
1858 | ||
4a137074 | 1859 | Enum |
1860 | Name(lto_partition_model) Type(enum lto_partition_model) UnknownError(unknown LTO partitioning model %qs) | |
48e3ea52 | 1861 | |
4a137074 | 1862 | EnumValue |
1863 | Enum(lto_partition_model) String(none) Value(LTO_PARTITION_NONE) | |
48e3ea52 | 1864 | |
4a137074 | 1865 | EnumValue |
1866 | Enum(lto_partition_model) String(one) Value(LTO_PARTITION_ONE) | |
1867 | ||
1868 | EnumValue | |
1869 | Enum(lto_partition_model) String(balanced) Value(LTO_PARTITION_BALANCED) | |
1870 | ||
1871 | EnumValue | |
1872 | Enum(lto_partition_model) String(1to1) Value(LTO_PARTITION_1TO1) | |
1873 | ||
1874 | EnumValue | |
1875 | Enum(lto_partition_model) String(max) Value(LTO_PARTITION_MAX) | |
0851d795 | 1876 | |
4a137074 | 1877 | flto-partition= |
1878 | Common Joined RejectNegative Enum(lto_partition_model) Var(flag_lto_partition) Init(LTO_PARTITION_BALANCED) | |
8fb42bbc | 1879 | Specify the algorithm to partition symbols and vars at linktime. |
cbcf2791 | 1880 | |
7bfefa9d | 1881 | ; The initial value of -1 comes from Z_DEFAULT_COMPRESSION in zlib.h. |
1882 | flto-compression-level= | |
52368c34 | 1883 | Common Joined RejectNegative UInteger Var(flag_lto_compression_level) Init(-1) IntegerRange(0, 9) |
8fb42bbc | 1884 | -flto-compression-level=<number> Use zlib compression level <number> for IL. |
7bfefa9d | 1885 | |
d585ba22 | 1886 | flto-odr-type-merging |
1887 | Common Report Var(flag_lto_odr_type_mering) Init(1) | |
8fb42bbc | 1888 | Merge C++ types using One Definition Rule. |
d585ba22 | 1889 | |
7bfefa9d | 1890 | flto-report |
596c40fb | 1891 | Common Report Var(flag_lto_report) Init(0) |
8fb42bbc | 1892 | Report various link-time optimization statistics. |
7bfefa9d | 1893 | |
b63a7a3e | 1894 | flto-report-wpa |
1895 | Common Report Var(flag_lto_report_wpa) Init(0) | |
8fb42bbc | 1896 | Report various link-time optimization statistics for WPA only. |
b63a7a3e | 1897 | |
ecdb6d1a | 1898 | fmath-errno |
ecee1b29 | 1899 | Common Report Var(flag_errno_math) Init(1) Optimization SetByCombined |
8fb42bbc | 1900 | Set errno after built-in math functions. |
ecdb6d1a | 1901 | |
566d7c74 | 1902 | fmax-errors= |
1903 | Common Joined RejectNegative UInteger Var(flag_max_errors) | |
8fb42bbc | 1904 | -fmax-errors=<number> Maximum number of errors to report. |
566d7c74 | 1905 | |
ecdb6d1a | 1906 | fmem-report |
2e9da478 | 1907 | Common Report Var(mem_report) |
8fb42bbc | 1908 | Report on permanent memory allocation. |
ecdb6d1a | 1909 | |
93e5f148 | 1910 | fmem-report-wpa |
1911 | Common Report Var(mem_report_wpa) | |
8fb42bbc | 1912 | Report on permanent memory allocation in WPA only. |
93e5f148 | 1913 | |
82a16202 | 1914 | ; This will attempt to merge constant section constants, if 1 only |
1915 | ; string constants and constants from constant pool, if 2 also constant | |
1916 | ; variables. | |
ecdb6d1a | 1917 | fmerge-all-constants |
ce7711df | 1918 | Common Report Var(flag_merge_constants,2) Init(1) |
8fb42bbc | 1919 | Attempt to merge identical constants and constant variables. |
ecdb6d1a | 1920 | |
1921 | fmerge-constants | |
ce7711df | 1922 | Common Report Var(flag_merge_constants,1) |
8fb42bbc | 1923 | Attempt to merge identical constants across compilation units. |
ecdb6d1a | 1924 | |
7765591b | 1925 | fmerge-debug-strings |
1926 | Common Report Var(flag_merge_debug_strings) Init(1) | |
8fb42bbc | 1927 | Attempt to merge identical debug strings across compilation units. |
7765591b | 1928 | |
1e06725a | 1929 | fmessage-length= |
1930 | Common RejectNegative Joined UInteger | |
8fb42bbc | 1931 | -fmessage-length=<number> Limit diagnostics to <number> characters per line. 0 suppresses line-wrapping. |
1e06725a | 1932 | |
406a73e7 | 1933 | fmodulo-sched |
87c75316 | 1934 | Common Report Var(flag_modulo_sched) Optimization |
8fb42bbc | 1935 | Perform SMS based modulo scheduling before the first scheduling pass. |
406a73e7 | 1936 | |
3a943084 | 1937 | fmodulo-sched-allow-regmoves |
bfedbed1 | 1938 | Common Report Var(flag_modulo_sched_allow_regmoves) Optimization |
8fb42bbc | 1939 | Perform SMS based modulo scheduling with register moves allowed. |
3a943084 | 1940 | |
3a0ecac2 | 1941 | fmove-loop-invariants |
1941e89d | 1942 | Common Report Var(flag_move_loop_invariants) Optimization |
8fb42bbc | 1943 | Move loop invariant computations out of loops. |
3a0ecac2 | 1944 | |
3072d30e | 1945 | fdce |
76c71f34 | 1946 | Common Var(flag_dce) Init(1) Optimization |
8fb42bbc | 1947 | Use the RTL dead code elimination pass. |
3072d30e | 1948 | |
1949 | fdse | |
76c71f34 | 1950 | Common Var(flag_dse) Init(1) Optimization |
8fb42bbc | 1951 | Use the RTL dead store elimination pass. |
3072d30e | 1952 | |
f045d41d | 1953 | freschedule-modulo-scheduled-loops |
87c75316 | 1954 | Common Report Var(flag_resched_modulo_sched) Optimization |
8fb42bbc | 1955 | Enable/Disable the traditional scheduling in loops that already passed modulo scheduling. |
f045d41d | 1956 | |
ecdb6d1a | 1957 | fnon-call-exceptions |
87c75316 | 1958 | Common Report Var(flag_non_call_exceptions) Optimization |
8fb42bbc | 1959 | Support synchronous non-call exceptions. |
ecdb6d1a | 1960 | |
38e21583 | 1961 | foffload= |
1962 | Common Driver Joined MissingArgError(options or targets missing after %qs) | |
8fb42bbc | 1963 | -foffload=<targets>=<options> Specify offloading targets and options for them. |
38e21583 | 1964 | |
1965 | foffload-abi= | |
1966 | Common Joined RejectNegative Enum(offload_abi) Var(flag_offload_abi) Init(OFFLOAD_ABI_UNSET) | |
8fb42bbc | 1967 | -foffload-abi=[lp64|ilp32] Set the ABI to use in an offload compiler. |
38e21583 | 1968 | |
1969 | Enum | |
1970 | Name(offload_abi) Type(enum offload_abi) UnknownError(unknown offload ABI %qs) | |
1971 | ||
1972 | EnumValue | |
1973 | Enum(offload_abi) String(ilp32) Value(OFFLOAD_ABI_ILP32) | |
1974 | ||
1975 | EnumValue | |
1976 | Enum(offload_abi) String(lp64) Value(OFFLOAD_ABI_LP64) | |
1977 | ||
1e06725a | 1978 | fomit-frame-pointer |
87c75316 | 1979 | Common Report Var(flag_omit_frame_pointer) Optimization |
8fb42bbc | 1980 | When possible do not generate stack frames. |
1e06725a | 1981 | |
7bd765d4 | 1982 | fopt-info |
1983 | Common Report Var(flag_opt_info) Optimization | |
8fb42bbc | 1984 | Enable all optimization info dumps on stderr. |
7bd765d4 | 1985 | |
1986 | fopt-info- | |
1987 | Common Joined RejectNegative Var(common_deferred_options) Defer | |
8fb42bbc | 1988 | -fopt-info[-<type>=filename] Dump compiler optimization details. |
7bd765d4 | 1989 | |
9dcf2a11 | 1990 | fsave-optimization-record |
1991 | Common Report Var(flag_save_optimization_record) Optimization | |
1992 | Write a SRCFILE.opt-record.json file detailing what optimizations were performed. | |
1993 | ||
ecdb6d1a | 1994 | foptimize-register-move |
284f0696 | 1995 | Common Ignore |
1996 | Does nothing. Preserved for backward compatibility. | |
ecdb6d1a | 1997 | |
1e06725a | 1998 | foptimize-sibling-calls |
87c75316 | 1999 | Common Report Var(flag_optimize_sibling_calls) Optimization |
8fb42bbc | 2000 | Optimize sibling and tail recursive calls. |
1e06725a | 2001 | |
2862cf88 | 2002 | fpartial-inlining |
bfedbed1 | 2003 | Common Report Var(flag_partial_inlining) Optimization |
8fb42bbc | 2004 | Perform partial inlining. |
2862cf88 | 2005 | |
51949610 | 2006 | fpre-ipa-mem-report |
2007 | Common Report Var(pre_ipa_mem_report) | |
8fb42bbc | 2008 | Report on memory allocation before interprocedural optimization. |
51949610 | 2009 | |
2010 | fpost-ipa-mem-report | |
2011 | Common Report Var(post_ipa_mem_report) | |
8fb42bbc | 2012 | Report on memory allocation before interprocedural optimization. |
51949610 | 2013 | |
ecdb6d1a | 2014 | fpack-struct |
87c75316 | 2015 | Common Report Var(flag_pack_struct) Optimization |
8fb42bbc | 2016 | Pack structure members together without holes. |
ecdb6d1a | 2017 | |
6b5553e5 | 2018 | fpack-struct= |
87c75316 | 2019 | Common RejectNegative Joined UInteger Optimization |
8fb42bbc | 2020 | -fpack-struct=<number> Set initial maximum structure member alignment. |
6b5553e5 | 2021 | |
1e06725a | 2022 | fpcc-struct-return |
4aafe913 | 2023 | Common Report Var(flag_pcc_struct_return,1) Init(DEFAULT_PCC_STRUCT_RETURN) |
8fb42bbc | 2024 | Return small aggregates in memory, not registers. |
1e06725a | 2025 | |
2026 | fpeel-loops | |
87c75316 | 2027 | Common Report Var(flag_peel_loops) Optimization |
8fb42bbc | 2028 | Perform loop peeling. |
1e06725a | 2029 | |
2030 | fpeephole | |
87c75316 | 2031 | Common Report Var(flag_no_peephole,0) Optimization |
8fb42bbc | 2032 | Enable machine specific peephole optimizations. |
1e06725a | 2033 | |
ecdb6d1a | 2034 | fpeephole2 |
87c75316 | 2035 | Common Report Var(flag_peephole2) Optimization |
8fb42bbc | 2036 | Enable an RTL peephole pass before sched2. |
ecdb6d1a | 2037 | |
82a16202 | 2038 | fPIC |
5ec4a949 | 2039 | Common Report Var(flag_pic,2) Negative(fPIE) Init(-1) |
8fb42bbc | 2040 | Generate position-independent code if possible (large mode). |
82a16202 | 2041 | |
2042 | fPIE | |
e9abca4f | 2043 | Common Report Var(flag_pie,2) Negative(fpic) Init(-1) |
8fb42bbc | 2044 | Generate position-independent code for executables if possible (large mode). |
82a16202 | 2045 | |
ecdb6d1a | 2046 | fpic |
5ec4a949 | 2047 | Common Report Var(flag_pic,1) Negative(fpie) Init(-1) |
8fb42bbc | 2048 | Generate position-independent code if possible (small mode). |
ecdb6d1a | 2049 | |
2050 | fpie | |
e9abca4f | 2051 | Common Report Var(flag_pie,1) Negative(fPIC) Init(-1) |
8fb42bbc | 2052 | Generate position-independent code for executables if possible (small mode). |
ecdb6d1a | 2053 | |
562ef5cc | 2054 | fplt |
2055 | Common Report Var(flag_plt) Init(1) Optimization | |
8fb42bbc | 2056 | Use PLT for PIC calls (-fno-plt: load the address from GOT at call site). |
562ef5cc | 2057 | |
9227b6fc | 2058 | fplugin= |
f0da0668 | 2059 | Common Joined RejectNegative Var(common_deferred_options) Defer |
8fb42bbc | 2060 | Specify a plugin to load. |
9227b6fc | 2061 | |
2062 | fplugin-arg- | |
f0da0668 | 2063 | Common Joined RejectNegative Var(common_deferred_options) Defer |
8fb42bbc | 2064 | -fplugin-arg-<name>-<key>[=<value>] Specify argument <key>=<value> for plugin <name>. |
9227b6fc | 2065 | |
ad4a85ad | 2066 | fpredictive-commoning |
76c71f34 | 2067 | Common Report Var(flag_predictive_commoning) Optimization |
ad4a85ad | 2068 | Run predictive commoning optimization. |
2069 | ||
1e06725a | 2070 | fprefetch-loop-arrays |
cd459e62 | 2071 | Common Report Var(flag_prefetch_loop_arrays) Init(-1) Optimization |
8fb42bbc | 2072 | Generate prefetch instructions, if available, for arrays in loops. |
1e06725a | 2073 | |
ecdb6d1a | 2074 | fprofile |
2e9da478 | 2075 | Common Report Var(profile_flag) |
8fb42bbc | 2076 | Enable basic program profiling code. |
ecdb6d1a | 2077 | |
9bdf2425 | 2078 | fprofile-abs-path |
2079 | Common Report Var(profile_abs_path_flag) | |
2080 | Generate absolute source path names for gcov. | |
2081 | ||
ecdb6d1a | 2082 | fprofile-arcs |
2e9da478 | 2083 | Common Report Var(profile_arc_flag) |
8fb42bbc | 2084 | Insert arc-based program profiling code. |
ecdb6d1a | 2085 | |
3e3a0e9c | 2086 | fprofile-dir= |
cc4fa57a | 2087 | Common Joined RejectNegative Var(profile_data_prefix) |
3e3a0e9c | 2088 | Set the top-level directory for storing the profile data. |
2089 | The default is 'pwd'. | |
2090 | ||
e0dc6f2b | 2091 | fprofile-correction |
2092 | Common Report Var(flag_profile_correction) | |
8fb42bbc | 2093 | Enable correction of flow inconsistent profile data input. |
e0dc6f2b | 2094 | |
7132b755 | 2095 | fprofile-update= |
2096 | Common Joined RejectNegative Enum(profile_update) Var(flag_profile_update) Init(PROFILE_UPDATE_SINGLE) | |
3af33bcf | 2097 | -fprofile-update=[single|atomic|prefer-atomic] Set the profile update method. |
7132b755 | 2098 | |
aed74248 | 2099 | fprofile-filter-files= |
2100 | Common Joined RejectNegative Var(flag_profile_filter_files) | |
2101 | Instrument only functions from files where names match any regular expression (separated by a semi-colon). | |
2102 | ||
2103 | fprofile-exclude-files= | |
2104 | Common Joined RejectNegative Var(flag_profile_exclude_files) | |
2105 | Instrument only functions from files where names do not match all the regular expressions (separated by a semi-colon). | |
2106 | ||
7132b755 | 2107 | Enum |
2108 | Name(profile_update) Type(enum profile_update) UnknownError(unknown profile update method %qs) | |
2109 | ||
2110 | EnumValue | |
2111 | Enum(profile_update) String(single) Value(PROFILE_UPDATE_SINGLE) | |
2112 | ||
2113 | EnumValue | |
2114 | Enum(profile_update) String(atomic) Value(PROFILE_UPDATE_ATOMIC) | |
2115 | ||
3af33bcf | 2116 | EnumValue |
2117 | Enum(profile_update) String(prefer-atomic) Value(PROFILE_UPDATE_PREFER_ATOMIC) | |
2118 | ||
7dea76ba | 2119 | fprofile-generate |
2120 | Common | |
8fb42bbc | 2121 | Enable common options for generating profile info for profile feedback directed optimizations. |
7dea76ba | 2122 | |
3e3a0e9c | 2123 | fprofile-generate= |
2124 | Common Joined RejectNegative | |
8fb42bbc | 2125 | Enable common options for generating profile info for profile feedback directed optimizations, and set -fprofile-dir=. |
3e3a0e9c | 2126 | |
7dea76ba | 2127 | fprofile-use |
3e3a0e9c | 2128 | Common Var(flag_profile_use) |
8fb42bbc | 2129 | Enable common options for performing profile feedback directed optimizations. |
7dea76ba | 2130 | |
3e3a0e9c | 2131 | fprofile-use= |
2132 | Common Joined RejectNegative | |
8fb42bbc | 2133 | Enable common options for performing profile feedback directed optimizations, and set -fprofile-dir=. |
3e3a0e9c | 2134 | |
1c6a7b8c | 2135 | fprofile-values |
2e9da478 | 2136 | Common Report Var(flag_profile_values) |
8fb42bbc | 2137 | Insert code to profile values of expressions. |
1c6a7b8c | 2138 | |
5168ef25 | 2139 | fprofile-report |
2140 | Common Report Var(profile_report) | |
8fb42bbc | 2141 | Report on consistency of profile. |
5168ef25 | 2142 | |
af48f0b1 | 2143 | fprofile-reorder-functions |
2144 | Common Report Var(flag_profile_reorder_functions) | |
8fb42bbc | 2145 | Enable function reordering that improves code placement. |
af48f0b1 | 2146 | |
e6c4532a | 2147 | fpatchable-function-entry= |
2148 | Common Joined Optimization | |
2149 | Insert NOP instructions at each function entry. | |
2150 | ||
1e06725a | 2151 | frandom-seed |
9faf44d6 | 2152 | Common Var(common_deferred_options) Defer |
1e06725a | 2153 | |
2154 | frandom-seed= | |
9faf44d6 | 2155 | Common Joined RejectNegative Var(common_deferred_options) Defer |
4589a801 | 2156 | -frandom-seed=<string> Make compile reproducible using <string>. |
1e06725a | 2157 | |
7c6733e8 | 2158 | ; This switch causes the command line that was used to create an |
2159 | ; object file to be recorded into the object file. The exact format | |
2160 | ; of this recording is target and binary file format dependent. | |
2161 | ; It is related to the -fverbose-asm switch, but that switch only | |
2162 | ; records information in the assembler output file as comments, so | |
2163 | ; they never reach the object file. | |
2164 | frecord-gcc-switches | |
2165 | Common Report Var(flag_record_gcc_switches) | |
2166 | Record gcc command line switches in the object file. | |
2167 | ||
1e06725a | 2168 | freg-struct-return |
5461e683 | 2169 | Common Report Var(flag_pcc_struct_return,0) Optimization |
8fb42bbc | 2170 | Return small aggregates in registers. |
1e06725a | 2171 | |
ecdb6d1a | 2172 | fregmove |
284f0696 | 2173 | Common Ignore |
2174 | Does nothing. Preserved for backward compatibility. | |
ecdb6d1a | 2175 | |
e65bc032 | 2176 | flifetime-dse |
5065f8a0 | 2177 | Common Report Var(flag_lifetime_dse,2) Init(2) Optimization |
e65bc032 | 2178 | Tell DSE that the storage for a C++ object is dead when the constructor |
2179 | starts and when the destructor finishes. | |
2180 | ||
5065f8a0 | 2181 | flifetime-dse= |
52368c34 | 2182 | Common Joined RejectNegative UInteger Var(flag_lifetime_dse) Optimization IntegerRange(0, 2) |
5065f8a0 | 2183 | |
126dab7c | 2184 | flive-patching |
2185 | Common RejectNegative Alias(flive-patching=,inline-clone) Optimization | |
2186 | ||
2187 | flive-patching= | |
2188 | Common Report Joined RejectNegative Enum(live_patching_level) Var(flag_live_patching) Init(LIVE_PATCHING_NONE) Optimization | |
2189 | -flive-patching=[inline-only-static|inline-clone] Control IPA | |
2190 | optimizations to provide a safe compilation for live-patching. At the same | |
2191 | time, provides multiple-level control on the enabled IPA optimizations. | |
2192 | ||
2193 | Enum | |
2194 | Name(live_patching_level) Type(enum live_patching_level) UnknownError(unknown Live-Patching Level %qs) | |
2195 | ||
2196 | EnumValue | |
2197 | Enum(live_patching_level) String(inline-only-static) Value(LIVE_PATCHING_INLINE_ONLY_STATIC) | |
2198 | ||
2199 | EnumValue | |
2200 | Enum(live_patching_level) String(inline-clone) Value(LIVE_PATCHING_INLINE_CLONE) | |
2201 | ||
57a8bf1b | 2202 | flive-range-shrinkage |
2203 | Common Report Var(flag_live_range_shrinkage) Init(0) Optimization | |
8fb42bbc | 2204 | Relief of register pressure through live range shrinkage. |
57a8bf1b | 2205 | |
ecdb6d1a | 2206 | frename-registers |
87c75316 | 2207 | Common Report Var(flag_rename_registers) Init(2) Optimization |
8fb42bbc | 2208 | Perform a register renaming optimization pass. |
ecdb6d1a | 2209 | |
012ad66c | 2210 | fschedule-fusion |
2211 | Common Report Var(flag_schedule_fusion) Init(2) Optimization | |
8fb42bbc | 2212 | Perform a target dependent instruction fusion optimization pass. |
012ad66c | 2213 | |
ecdb6d1a | 2214 | freorder-blocks |
87c75316 | 2215 | Common Report Var(flag_reorder_blocks) Optimization |
8fb42bbc | 2216 | Reorder basic blocks to improve code placement. |
ecdb6d1a | 2217 | |
e57ef194 | 2218 | freorder-blocks-algorithm= |
2219 | Common Joined RejectNegative Enum(reorder_blocks_algorithm) Var(flag_reorder_blocks_algorithm) Init(REORDER_BLOCKS_ALGORITHM_SIMPLE) Optimization | |
6ac368bb | 2220 | -freorder-blocks-algorithm=[simple|stc] Set the used basic block reordering algorithm. |
e57ef194 | 2221 | |
2222 | Enum | |
2223 | Name(reorder_blocks_algorithm) Type(enum reorder_blocks_algorithm) UnknownError(unknown basic block reordering algorithm %qs) | |
2224 | ||
2225 | EnumValue | |
2226 | Enum(reorder_blocks_algorithm) String(simple) Value(REORDER_BLOCKS_ALGORITHM_SIMPLE) | |
2227 | ||
2228 | EnumValue | |
2229 | Enum(reorder_blocks_algorithm) String(stc) Value(REORDER_BLOCKS_ALGORITHM_STC) | |
2230 | ||
4f18499c | 2231 | freorder-blocks-and-partition |
87c75316 | 2232 | Common Report Var(flag_reorder_blocks_and_partition) Optimization |
8fb42bbc | 2233 | Reorder basic blocks and partition into hot and cold sections. |
4f18499c | 2234 | |
ecdb6d1a | 2235 | freorder-functions |
87c75316 | 2236 | Common Report Var(flag_reorder_functions) Optimization |
8fb42bbc | 2237 | Reorder functions to improve code placement. |
ecdb6d1a | 2238 | |
1e06725a | 2239 | frerun-cse-after-loop |
c17f64cc | 2240 | Common Report Var(flag_rerun_cse_after_loop) Optimization |
8fb42bbc | 2241 | Add a common subexpression elimination pass after loop optimizations. |
1e06725a | 2242 | |
4f87b914 | 2243 | frerun-loop-opt |
3b0273a1 | 2244 | Common Ignore |
334ec2d8 | 2245 | Does nothing. Preserved for backward compatibility. |
4f87b914 | 2246 | |
5466f589 | 2247 | frounding-math |
ecee1b29 | 2248 | Common Report Var(flag_rounding_math) Optimization SetByCombined |
8fb42bbc | 2249 | Disable optimizations that assume default FP rounding behavior. |
5466f589 | 2250 | |
ecdb6d1a | 2251 | fsched-interblock |
87c75316 | 2252 | Common Report Var(flag_schedule_interblock) Init(1) Optimization |
8fb42bbc | 2253 | Enable scheduling across basic blocks. |
ecdb6d1a | 2254 | |
a7dcf969 | 2255 | fsched-pressure |
2256 | Common Report Var(flag_sched_pressure) Init(0) Optimization | |
8fb42bbc | 2257 | Enable register pressure sensitive insn scheduling. |
a7dcf969 | 2258 | |
ecdb6d1a | 2259 | fsched-spec |
87c75316 | 2260 | Common Report Var(flag_schedule_speculative) Init(1) Optimization |
8fb42bbc | 2261 | Allow speculative motion of non-loads. |
ecdb6d1a | 2262 | |
2263 | fsched-spec-load | |
87c75316 | 2264 | Common Report Var(flag_schedule_speculative_load) Optimization |
8fb42bbc | 2265 | Allow speculative motion of some loads. |
ecdb6d1a | 2266 | |
2267 | fsched-spec-load-dangerous | |
87c75316 | 2268 | Common Report Var(flag_schedule_speculative_load_dangerous) Optimization |
8fb42bbc | 2269 | Allow speculative motion of more loads. |
ecdb6d1a | 2270 | |
1e06725a | 2271 | fsched-verbose= |
043bc144 | 2272 | Common RejectNegative Joined UInteger Var(sched_verbose_param) Init(1) |
8fb42bbc | 2273 | -fsched-verbose=<number> Set the verbosity level of the scheduler. |
1e06725a | 2274 | |
ecdb6d1a | 2275 | fsched2-use-superblocks |
87c75316 | 2276 | Common Report Var(flag_sched2_use_superblocks) Optimization |
8fb42bbc | 2277 | If scheduling post reload, do superblock scheduling. |
ecdb6d1a | 2278 | |
2279 | fsched2-use-traces | |
3b0273a1 | 2280 | Common Ignore |
fda153ea | 2281 | Does nothing. Preserved for backward compatibility. |
ecdb6d1a | 2282 | |
1e06725a | 2283 | fschedule-insns |
87c75316 | 2284 | Common Report Var(flag_schedule_insns) Optimization |
8fb42bbc | 2285 | Reschedule instructions before register allocation. |
1e06725a | 2286 | |
2287 | fschedule-insns2 | |
87c75316 | 2288 | Common Report Var(flag_schedule_insns_after_reload) Optimization |
8fb42bbc | 2289 | Reschedule instructions after register allocation. |
1e06725a | 2290 | |
e1ab7874 | 2291 | ; This flag should be on when a target implements non-trivial |
2292 | ; scheduling hooks, maybe saving some information for its own sake. | |
8fb42bbc | 2293 | ; On IA64, for example, this is used for correct bundling. |
e1ab7874 | 2294 | fselective-scheduling |
2295 | Common Report Var(flag_selective_scheduling) Optimization | |
8fb42bbc | 2296 | Schedule instructions using selective scheduling algorithm. |
e1ab7874 | 2297 | |
2298 | fselective-scheduling2 | |
8fb42bbc | 2299 | Common Report Var(flag_selective_scheduling2) Optimization |
2300 | Run selective scheduling after reload. | |
e1ab7874 | 2301 | |
c081d2fc | 2302 | fself-test= |
2303 | Common Undocumented Joined Var(flag_self_test) | |
2304 | Run self-tests, using the given path to locate test files. | |
99b4f3a2 | 2305 | |
e1ab7874 | 2306 | fsel-sched-pipelining |
2307 | Common Report Var(flag_sel_sched_pipelining) Init(0) Optimization | |
8fb42bbc | 2308 | Perform software pipelining of inner loops during selective scheduling. |
e1ab7874 | 2309 | |
2310 | fsel-sched-pipelining-outer-loops | |
2311 | Common Report Var(flag_sel_sched_pipelining_outer_loops) Init(0) Optimization | |
8fb42bbc | 2312 | Perform software pipelining of outer loops during selective scheduling. |
e1ab7874 | 2313 | |
2314 | fsel-sched-reschedule-pipelined | |
2315 | Common Report Var(flag_sel_sched_reschedule_pipelined) Init(0) Optimization | |
8fb42bbc | 2316 | Reschedule pipelined regions without pipelining. |
e1ab7874 | 2317 | |
92bfaaee | 2318 | fsemantic-interposition |
2319 | Common Report Var(flag_semantic_interposition) Init(1) | |
8fb42bbc | 2320 | Allow interposing function (or variables) by ones with different semantics (or initializer) respectively by dynamic linker. |
92bfaaee | 2321 | |
82a16202 | 2322 | ; sched_stalled_insns means that insns can be moved prematurely from the queue |
2323 | ; of stalled insns into the ready list. | |
52c4b43f | 2324 | fsched-stalled-insns |
46f8e3b0 | 2325 | Common Report Var(flag_sched_stalled_insns) Optimization UInteger |
8fb42bbc | 2326 | Allow premature scheduling of queued insns. |
52c4b43f | 2327 | |
2328 | fsched-stalled-insns= | |
bfedbed1 | 2329 | Common RejectNegative Joined UInteger Optimization |
8fb42bbc | 2330 | -fsched-stalled-insns=<number> Set number of queued insns that can be prematurely scheduled. |
52c4b43f | 2331 | |
82a16202 | 2332 | ; sched_stalled_insns_dep controls how many recently scheduled cycles will |
2333 | ; be examined for a dependency on a stalled insn that is candidate for | |
2334 | ; premature removal from the queue of stalled insns into the ready list (has | |
2335 | ; an effect only if the flag 'sched_stalled_insns' is set). | |
52c4b43f | 2336 | fsched-stalled-insns-dep |
46f8e3b0 | 2337 | Common Report Var(flag_sched_stalled_insns_dep,1) Init(1) Optimization UInteger |
8fb42bbc | 2338 | Set dependence distance checking in premature scheduling of queued insns. |
52c4b43f | 2339 | |
2340 | fsched-stalled-insns-dep= | |
bfedbed1 | 2341 | Common RejectNegative Joined UInteger Optimization |
8fb42bbc | 2342 | -fsched-stalled-insns-dep=<number> Set dependence distance checking in premature scheduling of queued insns. |
52c4b43f | 2343 | |
4d569386 | 2344 | fsched-group-heuristic |
2345 | Common Report Var(flag_sched_group_heuristic) Init(1) Optimization | |
8fb42bbc | 2346 | Enable the group heuristic in the scheduler. |
4d569386 | 2347 | |
2348 | fsched-critical-path-heuristic | |
2349 | Common Report Var(flag_sched_critical_path_heuristic) Init(1) Optimization | |
8fb42bbc | 2350 | Enable the critical path heuristic in the scheduler. |
4d569386 | 2351 | |
2352 | fsched-spec-insn-heuristic | |
2353 | Common Report Var(flag_sched_spec_insn_heuristic) Init(1) Optimization | |
8fb42bbc | 2354 | Enable the speculative instruction heuristic in the scheduler. |
4d569386 | 2355 | |
4d569386 | 2356 | fsched-rank-heuristic |
2357 | Common Report Var(flag_sched_rank_heuristic) Init(1) Optimization | |
8fb42bbc | 2358 | Enable the rank heuristic in the scheduler. |
4d569386 | 2359 | |
2360 | fsched-last-insn-heuristic | |
2361 | Common Report Var(flag_sched_last_insn_heuristic) Init(1) Optimization | |
8fb42bbc | 2362 | Enable the last instruction heuristic in the scheduler. |
4d569386 | 2363 | |
2364 | fsched-dep-count-heuristic | |
2365 | Common Report Var(flag_sched_dep_count_heuristic) Init(1) Optimization | |
8fb42bbc | 2366 | Enable the dependent count heuristic in the scheduler. |
4d569386 | 2367 | |
f2d0e9f1 | 2368 | fsection-anchors |
87c75316 | 2369 | Common Report Var(flag_section_anchors) Optimization |
8fb42bbc | 2370 | Access data in the same section from shared anchor points. |
f2d0e9f1 | 2371 | |
2b74c150 | 2372 | fsee |
3b0273a1 | 2373 | Common Ignore |
1bc99153 | 2374 | Does nothing. Preserved for backward compatibility. |
2b74c150 | 2375 | |
a5b022e7 | 2376 | fzee |
1d4227c3 | 2377 | Common Ignore |
2378 | Does nothing. Preserved for backward compatibility. | |
2379 | ||
2380 | free | |
2381 | Common Report Var(flag_ree) Init(0) | |
2382 | Turn on Redundant Extensions Elimination pass. | |
a5b022e7 | 2383 | |
5fd4bf3b | 2384 | fshow-column |
abf6a617 | 2385 | Common Report Var(flag_show_column) Init(1) |
8fb42bbc | 2386 | Show column numbers in diagnostics, when available. Default on. |
5fd4bf3b | 2387 | |
1f021f97 | 2388 | fshrink-wrap |
2389 | Common Report Var(flag_shrink_wrap) Optimization | |
2390 | Emit function prologues only before parts of the function that need it, | |
2391 | rather than at the top of the function. | |
2392 | ||
9be10499 | 2393 | fshrink-wrap-separate |
2394 | Common Report Var(flag_shrink_wrap_separate) Init(1) Optimization | |
2395 | Shrink-wrap parts of the prologue and epilogue separately. | |
2396 | ||
ecdb6d1a | 2397 | fsignaling-nans |
ecee1b29 | 2398 | Common Report Var(flag_signaling_nans) Optimization SetByCombined |
8fb42bbc | 2399 | Disable optimizations observable by IEEE signaling NaNs. |
ecdb6d1a | 2400 | |
893038cd | 2401 | fsigned-zeros |
ecee1b29 | 2402 | Common Report Var(flag_signed_zeros) Init(1) Optimization SetByCombined |
8fb42bbc | 2403 | Disable floating point optimizations that ignore the IEEE signedness of zero. |
893038cd | 2404 | |
ecdb6d1a | 2405 | fsingle-precision-constant |
87c75316 | 2406 | Common Report Var(flag_single_precision_constant) Optimization |
8fb42bbc | 2407 | Convert floating point constants to single precision constants. |
ecdb6d1a | 2408 | |
a9989fb4 | 2409 | fsplit-ivs-in-unroller |
87c75316 | 2410 | Common Report Var(flag_split_ivs_in_unroller) Init(1) Optimization |
8fb42bbc | 2411 | Split lifetimes of induction variables when loops are unrolled. |
a9989fb4 | 2412 | |
48b14f50 | 2413 | fsplit-stack |
2414 | Common Report Var(flag_split_stack) Init(-1) | |
8fb42bbc | 2415 | Generate discontiguous stack frames. |
48b14f50 | 2416 | |
1a6a0f2a | 2417 | fsplit-wide-types |
e8831472 | 2418 | Common Report Var(flag_split_wide_types) Optimization |
8fb42bbc | 2419 | Split wide types into independent registers. |
1a6a0f2a | 2420 | |
7fc2f613 | 2421 | fssa-backprop |
2422 | Common Report Var(flag_ssa_backprop) Init(1) Optimization | |
2423 | Enable backward propagation of use properties at the SSA level. | |
2424 | ||
3dac50cc | 2425 | fssa-phiopt |
2426 | Common Report Var(flag_ssa_phiopt) Optimization | |
8fb42bbc | 2427 | Optimize conditional patterns using SSA PHI nodes. |
3dac50cc | 2428 | |
7c09c5f7 | 2429 | fstdarg-opt |
2430 | Common Report Var(flag_stdarg_opt) Init(1) Optimization | |
8fb42bbc | 2431 | Optimize amount of stdarg registers saved to stack at start of function. |
7c09c5f7 | 2432 | |
375bb675 | 2433 | fvariable-expansion-in-unroller |
87c75316 | 2434 | Common Report Var(flag_variable_expansion_in_unroller) Optimization |
8fb42bbc | 2435 | Apply variable expansion when loops are unrolled. |
375bb675 | 2436 | |
4852b829 | 2437 | fstack-check= |
74af142d | 2438 | Common Report RejectNegative Joined Optimization |
8fb42bbc | 2439 | -fstack-check=[no|generic|specific] Insert stack checking code into the program. |
4852b829 | 2440 | |
ecdb6d1a | 2441 | fstack-check |
67089c6b | 2442 | Common Alias(fstack-check=, specific, no) |
8fb42bbc | 2443 | Insert stack checking code into the program. Same as -fstack-check=specific. |
ecdb6d1a | 2444 | |
74af142d | 2445 | fstack-clash-protection |
2446 | Common Report Var(flag_stack_clash_protection) Optimization | |
2447 | Insert code to probe each page of stack space as it is allocated to protect | |
2448 | from stack-clash style attacks. | |
2449 | ||
1e06725a | 2450 | fstack-limit |
f0da0668 | 2451 | Common Var(common_deferred_options) Defer |
1e06725a | 2452 | |
941a4893 | 2453 | fstack-limit-register= |
f0da0668 | 2454 | Common RejectNegative Joined Var(common_deferred_options) Defer |
8fb42bbc | 2455 | -fstack-limit-register=<register> Trap if the stack goes past <register>. |
941a4893 | 2456 | |
2457 | fstack-limit-symbol= | |
f0da0668 | 2458 | Common RejectNegative Joined Var(common_deferred_options) Defer |
8fb42bbc | 2459 | -fstack-limit-symbol=<name> Trap if the stack goes past symbol <name>. |
941a4893 | 2460 | |
f1a0edff | 2461 | fstack-protector |
9ed0eb00 | 2462 | Common Report Var(flag_stack_protect, 1) Init(-1) Optimization |
8fb42bbc | 2463 | Use propolice as a stack protection method. |
f1a0edff | 2464 | |
2465 | fstack-protector-all | |
9ed0eb00 | 2466 | Common Report RejectNegative Var(flag_stack_protect, 2) Init(-1) Optimization |
8fb42bbc | 2467 | Use a stack protection method for every function. |
f1a0edff | 2468 | |
b156ec37 | 2469 | fstack-protector-strong |
9ed0eb00 | 2470 | Common Report RejectNegative Var(flag_stack_protect, 3) Init(-1) Optimization |
8fb42bbc | 2471 | Use a smart stack protection method for certain functions. |
b156ec37 | 2472 | |
947aa916 | 2473 | fstack-protector-explicit |
9ed0eb00 | 2474 | Common Report RejectNegative Var(flag_stack_protect, 4) Optimization |
8fb42bbc | 2475 | Use stack protection method only for functions with the stack_protect attribute. |
947aa916 | 2476 | |
990495a7 | 2477 | fstack-usage |
2478 | Common RejectNegative Var(flag_stack_usage) | |
8fb42bbc | 2479 | Output stack usage information on a per-function basis. |
990495a7 | 2480 | |
1e06725a | 2481 | fstrength-reduce |
3b0273a1 | 2482 | Common Ignore |
334ec2d8 | 2483 | Does nothing. Preserved for backward compatibility. |
1e06725a | 2484 | |
82a16202 | 2485 | ; Nonzero if we should do (language-dependent) alias analysis. |
2486 | ; Typically, this analysis will assume that expressions of certain | |
2487 | ; types do not alias expressions of certain other types. Only used | |
2488 | ; if alias analysis (in general) is enabled. | |
ecdb6d1a | 2489 | fstrict-aliasing |
87c75316 | 2490 | Common Report Var(flag_strict_aliasing) Optimization |
8fb42bbc | 2491 | Assume strict aliasing rules apply. |
ecdb6d1a | 2492 | |
981eb798 | 2493 | fstrict-overflow |
977361a1 | 2494 | Common Report |
2495 | Treat signed overflow as undefined. Negated as -fwrapv -fwrapv-pointer. | |
981eb798 | 2496 | |
d8219307 | 2497 | fsync-libcalls |
2498 | Common Report Var(flag_sync_libcalls) Init(1) | |
8fb42bbc | 2499 | Implement __atomic operations via libcalls to legacy __sync functions. |
d8219307 | 2500 | |
1e06725a | 2501 | fsyntax-only |
2e9da478 | 2502 | Common Report Var(flag_syntax_only) |
8fb42bbc | 2503 | Check for syntax errors, then stop. |
1e06725a | 2504 | |
ecdb6d1a | 2505 | ftest-coverage |
2e9da478 | 2506 | Common Report Var(flag_test_coverage) |
8fb42bbc | 2507 | Create data files needed by \"gcov\". |
ecdb6d1a | 2508 | |
1e06725a | 2509 | fthread-jumps |
87c75316 | 2510 | Common Report Var(flag_thread_jumps) Optimization |
8fb42bbc | 2511 | Perform jump threading optimizations. |
1e06725a | 2512 | |
ecdb6d1a | 2513 | ftime-report |
2e9da478 | 2514 | Common Report Var(time_report) |
8fb42bbc | 2515 | Report the time taken by each compiler pass. |
ecdb6d1a | 2516 | |
f649091c | 2517 | ftime-report-details |
2518 | Common Report Var(time_report_details) | |
2519 | Record times taken by sub-phases separately. | |
2520 | ||
941a4893 | 2521 | ftls-model= |
d62a5950 | 2522 | Common Joined RejectNegative Enum(tls_model) Var(flag_tls_default) Init(TLS_MODEL_GLOBAL_DYNAMIC) |
8fb42bbc | 2523 | -ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec] Set the default thread-local storage code generation model. |
941a4893 | 2524 | |
d62a5950 | 2525 | Enum |
2526 | Name(tls_model) Type(enum tls_model) UnknownError(unknown TLS model %qs) | |
2527 | ||
2528 | EnumValue | |
2529 | Enum(tls_model) String(global-dynamic) Value(TLS_MODEL_GLOBAL_DYNAMIC) | |
2530 | ||
2531 | EnumValue | |
2532 | Enum(tls_model) String(local-dynamic) Value(TLS_MODEL_LOCAL_DYNAMIC) | |
2533 | ||
2534 | EnumValue | |
2535 | Enum(tls_model) String(initial-exec) Value(TLS_MODEL_INITIAL_EXEC) | |
2536 | ||
2537 | EnumValue | |
2538 | Enum(tls_model) String(local-exec) Value(TLS_MODEL_LOCAL_EXEC) | |
2539 | ||
56af936e | 2540 | ftoplevel-reorder |
bfedbed1 | 2541 | Common Report Var(flag_toplevel_reorder) Init(2) |
8fb42bbc | 2542 | Reorder top level functions, variables, and asms. |
56af936e | 2543 | |
1e06725a | 2544 | ftracer |
bfedbed1 | 2545 | Common Report Var(flag_tracer) Optimization |
8fb42bbc | 2546 | Perform superblock formation via tail duplication. |
1e06725a | 2547 | |
a27e3913 | 2548 | ftrampolines |
2549 | Common Report Var(flag_trampolines) Init(0) | |
2550 | For targets that normally need trampolines for nested functions, always | |
2551 | generate them instead of using descriptors. | |
2552 | ||
82a16202 | 2553 | ; Zero means that floating-point math operations cannot generate a |
2554 | ; (user-visible) trap. This is the case, for example, in nonstop | |
2555 | ; IEEE 754 arithmetic. | |
ecdb6d1a | 2556 | ftrapping-math |
ecee1b29 | 2557 | Common Report Var(flag_trapping_math) Init(1) Optimization SetByCombined |
8fb42bbc | 2558 | Assume floating-point operations can trap. |
ecdb6d1a | 2559 | |
2560 | ftrapv | |
87c75316 | 2561 | Common Report Var(flag_trapv) Optimization |
8fb42bbc | 2562 | Trap for signed overflow in addition, subtraction and multiplication. |
ecdb6d1a | 2563 | |
4ee9c684 | 2564 | ftree-ccp |
87c75316 | 2565 | Common Report Var(flag_tree_ccp) Optimization |
8fb42bbc | 2566 | Enable SSA-CCP optimization on trees. |
4ee9c684 | 2567 | |
b7e55469 | 2568 | ftree-bit-ccp |
2569 | Common Report Var(flag_tree_bit_ccp) Optimization | |
8fb42bbc | 2570 | Enable SSA-BIT-CCP optimization on trees. |
b7e55469 | 2571 | |
88dbf20f | 2572 | ftree-store-ccp |
3b0273a1 | 2573 | Common Ignore |
61207d43 | 2574 | Does nothing. Preserved for backward compatibility. |
88dbf20f | 2575 | |
4ee9c684 | 2576 | ftree-ch |
87c75316 | 2577 | Common Report Var(flag_tree_ch) Optimization |
8fb42bbc | 2578 | Enable loop header copying on trees. |
4ee9c684 | 2579 | |
4015e18c | 2580 | ftree-coalesce-inlined-vars |
94f92c36 | 2581 | Common Ignore RejectNegative |
2582 | Does nothing. Preserved for backward compatibility. | |
4015e18c | 2583 | |
2584 | ftree-coalesce-vars | |
94f92c36 | 2585 | Common Report Var(flag_tree_coalesce_vars) Optimization |
8fb42bbc | 2586 | Enable SSA coalescing of user variables. |
4015e18c | 2587 | |
4ee9c684 | 2588 | ftree-copyrename |
94f92c36 | 2589 | Common Ignore |
2590 | Does nothing. Preserved for backward compatibility. | |
4ee9c684 | 2591 | |
88dbf20f | 2592 | ftree-copy-prop |
87c75316 | 2593 | Common Report Var(flag_tree_copy_prop) Optimization |
8fb42bbc | 2594 | Enable copy propagation on trees. |
88dbf20f | 2595 | |
2596 | ftree-store-copy-prop | |
3b0273a1 | 2597 | Common Ignore |
578ef723 | 2598 | Does nothing. Preserved for backward compatibility. |
88dbf20f | 2599 | |
e6d0e152 | 2600 | ftree-cselim |
2601 | Common Report Var(flag_tree_cselim) Init(2) Optimization | |
8fb42bbc | 2602 | Transform condition stores into unconditional ones. |
e6d0e152 | 2603 | |
a347af29 | 2604 | ftree-switch-conversion |
2605 | Common Report Var(flag_tree_switch_conversion) Optimization | |
2606 | Perform conversions of switch initializations. | |
2607 | ||
4ee9c684 | 2608 | ftree-dce |
87c75316 | 2609 | Common Report Var(flag_tree_dce) Optimization |
8fb42bbc | 2610 | Enable SSA dead code elimination optimization on trees. |
4ee9c684 | 2611 | |
2612 | ftree-dominator-opts | |
87c75316 | 2613 | Common Report Var(flag_tree_dom) Optimization |
8fb42bbc | 2614 | Enable dominator optimizations. |
4ee9c684 | 2615 | |
51385f30 | 2616 | ftree-tail-merge |
2617 | Common Report Var(flag_tree_tail_merge) Optimization | |
8fb42bbc | 2618 | Enable tail merging on trees. |
51385f30 | 2619 | |
4ee9c684 | 2620 | ftree-dse |
87c75316 | 2621 | Common Report Var(flag_tree_dse) Optimization |
8fb42bbc | 2622 | Enable dead store elimination. |
4ee9c684 | 2623 | |
408c3c77 | 2624 | ftree-forwprop |
2625 | Common Report Var(flag_tree_forwprop) Init(1) Optimization | |
8fb42bbc | 2626 | Enable forward propagation on trees. |
408c3c77 | 2627 | |
591c2a30 | 2628 | ftree-fre |
87c75316 | 2629 | Common Report Var(flag_tree_fre) Optimization |
8fb42bbc | 2630 | Enable Full Redundancy Elimination (FRE) on trees. |
591c2a30 | 2631 | |
9efe50a4 | 2632 | foptimize-strlen |
2633 | Common Report Var(flag_optimize_strlen) Optimization | |
8fb42bbc | 2634 | Enable string length optimizations on trees. |
9efe50a4 | 2635 | |
30b10261 | 2636 | fisolate-erroneous-paths-dereference |
2637 | Common Report Var(flag_isolate_erroneous_paths_dereference) Optimization | |
3c770735 | 2638 | Detect paths that trigger erroneous or undefined behavior due to |
2639 | dereferencing a null pointer. Isolate those paths from the main control | |
2640 | flow and turn the statement with erroneous or undefined behavior into a trap. | |
30b10261 | 2641 | |
2642 | fisolate-erroneous-paths-attribute | |
2643 | Common Report Var(flag_isolate_erroneous_paths_attribute) Optimization | |
af987227 | 2644 | Detect paths that trigger erroneous or undefined behavior due to a null value |
3c770735 | 2645 | being used in a way forbidden by a returns_nonnull or nonnull |
30b10261 | 2646 | attribute. Isolate those paths from the main control flow and turn the |
8fb42bbc | 2647 | statement with erroneous or undefined behavior into a trap. |
db242b6d | 2648 | |
801c5610 | 2649 | ftree-loop-distribution |
2b945500 | 2650 | Common Report Var(flag_tree_loop_distribution) Optimization |
8fb42bbc | 2651 | Enable loop distribution on trees. |
801c5610 | 2652 | |
0acf3477 | 2653 | ftree-loop-distribute-patterns |
2654 | Common Report Var(flag_tree_loop_distribute_patterns) Optimization | |
8fb42bbc | 2655 | Enable loop distribution for patterns transformed into a library call. |
0acf3477 | 2656 | |
41b5cc78 | 2657 | ftree-loop-im |
87c75316 | 2658 | Common Report Var(flag_tree_loop_im) Init(1) Optimization |
8fb42bbc | 2659 | Enable loop invariant motion on trees. |
7d23383d | 2660 | |
60cfcb79 | 2661 | ftree-loop-linear |
4cc0f4e2 | 2662 | Common Alias(floop-nest-optimize) |
8fb42bbc | 2663 | Enable loop nest transforms. Same as -floop-nest-optimize. |
60cfcb79 | 2664 | |
41b5cc78 | 2665 | ftree-loop-ivcanon |
87c75316 | 2666 | Common Report Var(flag_tree_loop_ivcanon) Init(1) Optimization |
8fb42bbc | 2667 | Create canonical induction variables in loops. |
41b5cc78 | 2668 | |
dcb9eccb | 2669 | ftree-loop-optimize |
87c75316 | 2670 | Common Report Var(flag_tree_loop_optimize) Init(1) Optimization |
8fb42bbc | 2671 | Enable loop optimizations on tree level. |
dcb9eccb | 2672 | |
28c92cbb | 2673 | ftree-parallelize-loops= |
bfedbed1 | 2674 | Common Report Joined RejectNegative UInteger Var(flag_tree_parallelize_loops) Init(1) Optimization |
78adba87 | 2675 | -ftree-parallelize-loops=<number> Enable automatic parallelization of loops. |
28c92cbb | 2676 | |
408c3c77 | 2677 | ftree-phiprop |
2678 | Common Report Var(flag_tree_phiprop) Init(1) Optimization | |
2679 | Enable hoisting loads from conditional pointers. | |
2680 | ||
4ee9c684 | 2681 | ftree-pre |
87c75316 | 2682 | Common Report Var(flag_tree_pre) Optimization |
8fb42bbc | 2683 | Enable SSA-PRE optimization on trees. |
4ee9c684 | 2684 | |
0f9b384d | 2685 | ftree-partial-pre |
2686 | Common Report Var(flag_tree_partial_pre) Optimization | |
8fb42bbc | 2687 | In SSA-PRE optimization on trees, enable partial-partial redundancy elimination. |
0f9b384d | 2688 | |
408c3c77 | 2689 | ftree-pta |
1941e89d | 2690 | Common Report Var(flag_tree_pta) Optimization |
408c3c77 | 2691 | Perform function-local points-to analysis on trees. |
2692 | ||
621a93b1 | 2693 | ftree-reassoc |
2694 | Common Report Var(flag_tree_reassoc) Init(1) Optimization | |
8fb42bbc | 2695 | Enable reassociation on tree level. |
621a93b1 | 2696 | |
2be14d8b | 2697 | ftree-salias |
3b0273a1 | 2698 | Common Ignore |
70393469 | 2699 | Does nothing. Preserved for backward compatibility. |
2be14d8b | 2700 | |
5e733b02 | 2701 | ftree-sink |
87c75316 | 2702 | Common Report Var(flag_tree_sink) Optimization |
8fb42bbc | 2703 | Enable SSA code sinking on trees. |
5e733b02 | 2704 | |
6de100ef | 2705 | ftree-slsr |
2706 | Common Report Var(flag_tree_slsr) Optimization | |
8fb42bbc | 2707 | Perform straight-line strength reduction. |
6de100ef | 2708 | |
4ee9c684 | 2709 | ftree-sra |
87c75316 | 2710 | Common Report Var(flag_tree_sra) Optimization |
8fb42bbc | 2711 | Perform scalar replacement of aggregates. |
4ee9c684 | 2712 | |
2713 | ftree-ter | |
c17f64cc | 2714 | Common Report Var(flag_tree_ter) Optimization |
8fb42bbc | 2715 | Replace temporary expressions in the SSA->normal pass. |
4ee9c684 | 2716 | |
87c75316 | 2717 | ftree-lrs |
2718 | Common Report Var(flag_tree_live_range_split) Optimization | |
8fb42bbc | 2719 | Perform live range splitting during the SSA->normal pass. |
87c75316 | 2720 | |
88dbf20f | 2721 | ftree-vrp |
87c75316 | 2722 | Common Report Var(flag_tree_vrp) Init(0) Optimization |
8fb42bbc | 2723 | Perform Value Range Propagation on trees. |
88dbf20f | 2724 | |
b0e3fe96 | 2725 | fsplit-paths |
2726 | Common Report Var(flag_split_paths) Init(0) Optimization | |
2727 | Split paths leading to loop backedges. | |
2728 | ||
5ab2987f | 2729 | funconstrained-commons |
2730 | Common Var(flag_unconstrained_commons) Optimization | |
2731 | Assume common declarations may be overridden with ones with a larger | |
2732 | trailing array. | |
2733 | ||
1e06725a | 2734 | funit-at-a-time |
bfedbed1 | 2735 | Common Report Var(flag_unit_at_a_time) Init(1) |
8fb42bbc | 2736 | Compile whole compilation unit at a time. |
1e06725a | 2737 | |
2738 | funroll-loops | |
87c75316 | 2739 | Common Report Var(flag_unroll_loops) Optimization |
8fb42bbc | 2740 | Perform loop unrolling when iteration count is known. |
1e06725a | 2741 | |
2742 | funroll-all-loops | |
87c75316 | 2743 | Common Report Var(flag_unroll_all_loops) Optimization |
8fb42bbc | 2744 | Perform loop unrolling for all loops. |
1e06725a | 2745 | |
7e3cc681 | 2746 | ; Nonzero means that loop optimizer may assume that the induction variables |
2747 | ; that control loops do not overflow and that the loops with nontrivial | |
2748 | ; exit condition are not infinite | |
2749 | funsafe-loop-optimizations | |
9e609cf3 | 2750 | Common Ignore |
2751 | Does nothing. Preserved for backward compatibility. | |
7e3cc681 | 2752 | |
49d060d7 | 2753 | fassociative-math |
bfedbed1 | 2754 | Common Report Var(flag_associative_math) SetByCombined Optimization |
49d060d7 | 2755 | Allow optimization for floating-point arithmetic which may change the |
2756 | result of the operation due to rounding. | |
2757 | ||
2758 | freciprocal-math | |
bfedbed1 | 2759 | Common Report Var(flag_reciprocal_math) SetByCombined Optimization |
49d060d7 | 2760 | Same as -fassociative-math for expressions which include division. |
2761 | ||
82a16202 | 2762 | ; Nonzero means that unsafe floating-point math optimizations are allowed |
2763 | ; for the sake of speed. IEEE compliance is not guaranteed, and operations | |
2764 | ; are allowed to assume that their arguments and results are "normal" | |
2765 | ; (e.g., nonnegative for SQRT). | |
ecdb6d1a | 2766 | funsafe-math-optimizations |
ecee1b29 | 2767 | Common Report Var(flag_unsafe_math_optimizations) Optimization SetByCombined |
8fb42bbc | 2768 | Allow math optimizations that may violate IEEE or ISO standards. |
ecdb6d1a | 2769 | |
1e06725a | 2770 | funswitch-loops |
87c75316 | 2771 | Common Report Var(flag_unswitch_loops) Optimization |
8fb42bbc | 2772 | Perform loop unswitching. |
1e06725a | 2773 | |
92a2a716 | 2774 | fsplit-loops |
2775 | Common Report Var(flag_split_loops) Optimization | |
2776 | Perform loop splitting. | |
2777 | ||
9435b515 | 2778 | fversion-loops-for-strides |
2779 | Common Report Var(flag_version_loops_for_strides) Optimization | |
2780 | Version loops based on whether indices have a stride of one. | |
2781 | ||
ecdb6d1a | 2782 | funwind-tables |
87c75316 | 2783 | Common Report Var(flag_unwind_tables) Optimization |
8fb42bbc | 2784 | Just generate unwind tables for exception handling. |
ecdb6d1a | 2785 | |
99d5fe2d | 2786 | fuse-ld=bfd |
c75e4990 | 2787 | Common Driver Negative(fuse-ld=gold) |
8fb42bbc | 2788 | Use the bfd linker instead of the default linker. |
99d5fe2d | 2789 | |
2790 | fuse-ld=gold | |
c75e4990 | 2791 | Common Driver Negative(fuse-ld=bfd) |
8fb42bbc | 2792 | Use the gold linker instead of the default linker. |
99d5fe2d | 2793 | |
4eea76db | 2794 | fuse-ld=lld |
2795 | Common Driver Negative(fuse-ld=lld) | |
2796 | Use the lld LLVM linker instead of the default linker. | |
2797 | ||
386fbe6a | 2798 | fuse-linker-plugin |
cef15d47 | 2799 | Common Undocumented Var(flag_use_linker_plugin) |
386fbe6a | 2800 | |
0f8defe5 | 2801 | ; Positive if we should track variables, negative if we should run |
2802 | ; the var-tracking pass only to discard debug annotations, zero if | |
2803 | ; we're not to run it. When flag_var_tracking == 2 (AUTODETECT_VALUE) it | |
2804 | ; will be set according to optimize, debug_info_level and debug_hooks | |
2805 | ; in process_options (). | |
5923a5e7 | 2806 | fvar-tracking |
05d8c5f8 | 2807 | Common Report Var(flag_var_tracking) Init(2) PerFunction |
8fb42bbc | 2808 | Perform variable tracking. |
5923a5e7 | 2809 | |
0f8defe5 | 2810 | ; Positive if we should track variables at assignments, negative if |
2811 | ; we should run the var-tracking pass only to discard debug | |
2812 | ; annotations. When flag_var_tracking_assignments == | |
2813 | ; AUTODETECT_VALUE it will be set according to flag_var_tracking. | |
9845d120 | 2814 | fvar-tracking-assignments |
05d8c5f8 | 2815 | Common Report Var(flag_var_tracking_assignments) Init(2) PerFunction |
8fb42bbc | 2816 | Perform variable tracking by annotating assignments. |
9845d120 | 2817 | |
0f8defe5 | 2818 | ; Nonzero if we should toggle flag_var_tracking_assignments after |
2819 | ; processing options and computing its default. */ | |
9845d120 | 2820 | fvar-tracking-assignments-toggle |
05d8c5f8 | 2821 | Common Report Var(flag_var_tracking_assignments_toggle) PerFunction |
8fb42bbc | 2822 | Toggle -fvar-tracking-assignments. |
9845d120 | 2823 | |
3e1cce93 | 2824 | ; Positive if we should track uninitialized variables, negative if |
2825 | ; we should run the var-tracking pass only to discard debug | |
2826 | ; annotations. When flag_var_tracking_uninit == AUTODETECT_VALUE it | |
2827 | ; will be set according to flag_var_tracking. | |
d53bb226 | 2828 | fvar-tracking-uninit |
05d8c5f8 | 2829 | Common Report Var(flag_var_tracking_uninit) PerFunction |
8fb42bbc | 2830 | Perform variable tracking and also tag variables that are uninitialized. |
d53bb226 | 2831 | |
52e94bf8 | 2832 | ; Alias to enable both -ftree-loop-vectorize and -ftree-slp-vectorize. |
c91e8223 | 2833 | ftree-vectorize |
52e94bf8 | 2834 | Common Report Optimization |
8fb42bbc | 2835 | Enable vectorization on trees. |
c91e8223 | 2836 | |
7bd765d4 | 2837 | ftree-vectorizer-verbose= |
e64c6e9c | 2838 | Common Joined RejectNegative Ignore |
2839 | Does nothing. Preserved for backward compatibility. | |
7bd765d4 | 2840 | |
043115ec | 2841 | ftree-loop-vectorize |
52e94bf8 | 2842 | Common Report Var(flag_tree_loop_vectorize) Optimization EnabledBy(ftree-vectorize) |
8fb42bbc | 2843 | Enable loop vectorization on trees. |
043115ec | 2844 | |
37545e54 | 2845 | ftree-slp-vectorize |
52e94bf8 | 2846 | Common Report Var(flag_tree_slp_vectorize) Optimization EnabledBy(ftree-vectorize) |
8fb42bbc | 2847 | Enable basic block vectorization (SLP) on trees. |
37545e54 | 2848 | |
1dbf9bd1 | 2849 | fvect-cost-model= |
bfedbed1 | 2850 | Common Joined RejectNegative Enum(vect_cost_model) Var(flag_vect_cost_model) Init(VECT_COST_MODEL_DEFAULT) Optimization |
6ac368bb | 2851 | -fvect-cost-model=[unlimited|dynamic|cheap] Specifies the cost model for vectorization. |
8fb42bbc | 2852 | |
3e398f5b | 2853 | fsimd-cost-model= |
bfedbed1 | 2854 | Common Joined RejectNegative Enum(vect_cost_model) Var(flag_simd_cost_model) Init(VECT_COST_MODEL_UNLIMITED) Optimization |
6ac368bb | 2855 | -fsimd-cost-model=[unlimited|dynamic|cheap] Specifies the vectorization cost model for code marked with a simd directive. |
3e398f5b | 2856 | |
1dbf9bd1 | 2857 | Enum |
2858 | Name(vect_cost_model) Type(enum vect_cost_model) UnknownError(unknown vectorizer cost model %qs) | |
2859 | ||
2860 | EnumValue | |
2861 | Enum(vect_cost_model) String(unlimited) Value(VECT_COST_MODEL_UNLIMITED) | |
2862 | ||
2863 | EnumValue | |
2864 | Enum(vect_cost_model) String(dynamic) Value(VECT_COST_MODEL_DYNAMIC) | |
2865 | ||
2866 | EnumValue | |
2867 | Enum(vect_cost_model) String(cheap) Value(VECT_COST_MODEL_CHEAP) | |
2868 | ||
867c03eb | 2869 | fvect-cost-model |
e1a93520 | 2870 | Common Alias(fvect-cost-model=,dynamic,unlimited) |
1dbf9bd1 | 2871 | Enables the dynamic vectorizer cost model. Preserved for backward compatibility. |
2872 | ||
25e3c2e8 | 2873 | ftree-vect-loop-version |
1dbf9bd1 | 2874 | Common Ignore |
2875 | Does nothing. Preserved for backward compatibility. | |
25e3c2e8 | 2876 | |
2a6e95ba | 2877 | ftree-scev-cprop |
e8831472 | 2878 | Common Report Var(flag_tree_scev_cprop) Init(1) Optimization |
2a6e95ba | 2879 | Enable copy propagation of scalar-evolution information. |
2880 | ||
82a16202 | 2881 | ; -fverbose-asm causes extra commentary information to be produced in |
2882 | ; the generated assembly code (to make it more readable). This option | |
2883 | ; is generally only of use to those who actually need to read the | |
2884 | ; generated assembly code (perhaps while debugging the compiler itself). | |
2885 | ; -fno-verbose-asm, the default, causes the extra information | |
2886 | ; to not be added and is useful when comparing two assembler files. | |
ecdb6d1a | 2887 | fverbose-asm |
2e9da478 | 2888 | Common Report Var(flag_verbose_asm) |
8fb42bbc | 2889 | Add extra commentary to assembler output. |
ecdb6d1a | 2890 | |
b212f378 | 2891 | fvisibility= |
d62a5950 | 2892 | Common Joined RejectNegative Enum(symbol_visibility) Var(default_visibility) Init(VISIBILITY_DEFAULT) |
8fb42bbc | 2893 | -fvisibility=[default|internal|hidden|protected] Set the default symbol visibility. |
b212f378 | 2894 | |
d62a5950 | 2895 | Enum |
2896 | Name(symbol_visibility) Type(enum symbol_visibility) UnknownError(unrecognized visibility value %qs) | |
2897 | ||
2898 | EnumValue | |
2899 | Enum(symbol_visibility) String(default) Value(VISIBILITY_DEFAULT) | |
2900 | ||
2901 | EnumValue | |
2902 | Enum(symbol_visibility) String(internal) Value(VISIBILITY_INTERNAL) | |
2903 | ||
2904 | EnumValue | |
2905 | Enum(symbol_visibility) String(hidden) Value(VISIBILITY_HIDDEN) | |
2906 | ||
2907 | EnumValue | |
2908 | Enum(symbol_visibility) String(protected) Value(VISIBILITY_PROTECTED) | |
b212f378 | 2909 | |
b710ec85 | 2910 | fvtable-verify= |
2911 | Common Joined RejectNegative Enum(vtv_priority) Var(flag_vtable_verify) Init(VTV_NO_PRIORITY) | |
2912 | Validate vtable pointers before using them. | |
2913 | ||
2914 | Enum | |
2915 | Name(vtv_priority) Type(enum vtv_priority) UnknownError(unknown vtable verify initialization priority %qs) | |
2916 | ||
2917 | EnumValue | |
2918 | Enum(vtv_priority) String(none) Value(VTV_NO_PRIORITY) | |
2919 | ||
2920 | EnumValue | |
2921 | Enum(vtv_priority) String(std) Value(VTV_STANDARD_PRIORITY) | |
2922 | ||
2923 | EnumValue | |
2924 | Enum(vtv_priority) String(preinit) Value(VTV_PREINIT_PRIORITY) | |
2925 | ||
2926 | fvtv-counts | |
2927 | Common Var(flag_vtv_counts) | |
2928 | Output vtable verification counters. | |
2929 | ||
2930 | fvtv-debug | |
2931 | Common Var(flag_vtv_debug) | |
2932 | Output vtable verification pointer sets information. | |
2933 | ||
1c6a7b8c | 2934 | fvpt |
87c75316 | 2935 | Common Report Var(flag_value_profile_transformations) Optimization |
8fb42bbc | 2936 | Use expression value profiles in optimizations. |
1c6a7b8c | 2937 | |
eeb4a70e | 2938 | fweb |
87c75316 | 2939 | Common Report Var(flag_web) Init(2) Optimization |
8fb42bbc | 2940 | Construct webs and split unrelated uses of single variable. |
eeb4a70e | 2941 | |
e6a23add | 2942 | ftree-builtin-call-dce |
2943 | Common Report Var(flag_tree_builtin_call_dce) Init(0) Optimization | |
8fb42bbc | 2944 | Enable conditional dead code elimination for builtin calls. |
e6a23add | 2945 | |
62eec3b4 | 2946 | fwhole-program |
bfedbed1 | 2947 | Common Report Var(flag_whole_program) Init(0) |
8fb42bbc | 2948 | Perform whole program optimizations. |
62eec3b4 | 2949 | |
977361a1 | 2950 | fwrapv-pointer |
2951 | Common Report Var(flag_wrapv_pointer) Optimization | |
2952 | Assume pointer overflow wraps around. | |
2953 | ||
ecdb6d1a | 2954 | fwrapv |
87c75316 | 2955 | Common Report Var(flag_wrapv) Optimization |
8fb42bbc | 2956 | Assume signed arithmetic overflow wraps around. |
ecdb6d1a | 2957 | |
ecdb6d1a | 2958 | fzero-initialized-in-bss |
2e9da478 | 2959 | Common Report Var(flag_zero_initialized_in_bss) Init(1) |
8fb42bbc | 2960 | Put zero initialized data in the bss section. |
ecdb6d1a | 2961 | |
6f2f567f | 2962 | g |
a1408eb3 | 2963 | Common Driver RejectNegative JoinedOrMissing |
8fb42bbc | 2964 | Generate debug information in default format. |
b0e56fb1 | 2965 | |
d85a7677 | 2966 | gas-loc-support |
2967 | Common Driver Var(dwarf2out_as_loc_support) Init(2) | |
2968 | Assume assembler support for (DWARF2+) .loc directives | |
2969 | ||
2970 | gas-locview-support | |
2971 | Common Driver Var(dwarf2out_as_locview_support) Init(2) | |
2972 | Assume assembler support for view in (DWARF2+) .loc directives | |
2973 | ||
f4140c4a | 2974 | gcoff |
0c46a085 | 2975 | Common Driver Deprecated |
f4140c4a | 2976 | Does nothing. Preserved for backward compatibility. |
2977 | ||
2978 | gcoff1 | |
0c46a085 | 2979 | Common Driver Deprecated |
f4140c4a | 2980 | Does nothing. Preserved for backward compatibility. |
2981 | ||
2982 | gcoff2 | |
0c46a085 | 2983 | Common Driver Deprecated |
f4140c4a | 2984 | Does nothing. Preserved for backward compatibility. |
2985 | ||
2986 | gcoff3 | |
0c46a085 | 2987 | Common Driver Deprecated |
f4140c4a | 2988 | Does nothing. Preserved for backward compatibility. |
2989 | ||
8afa52da | 2990 | gcolumn-info |
c61ffa85 | 2991 | Common Driver Var(debug_column_info,1) Init(1) |
8afa52da | 2992 | Record DW_AT_decl_column and DW_AT_call_column in DWARF. |
2993 | ||
8786b72c | 2994 | gdwarf |
14234f77 | 2995 | Common Driver JoinedOrMissing Negative(gdwarf-) |
8fb42bbc | 2996 | Generate debug information in default version of DWARF format. |
8786b72c | 2997 | |
3d3b9d5b | 2998 | gdwarf- |
14234f77 | 2999 | Common Driver Joined UInteger Var(dwarf_version) Init(4) Negative(gstabs) |
8fb42bbc | 3000 | Generate debug information in DWARF v2 (or later) format. |
b0e56fb1 | 3001 | |
3002 | ggdb | |
14234f77 | 3003 | Common Driver JoinedOrMissing |
8fb42bbc | 3004 | Generate debug information in default extended format. |
b0e56fb1 | 3005 | |
d85a7677 | 3006 | ginline-points |
3007 | Common Driver Var(debug_inline_points) Init(2) | |
3008 | Generate extended entry point information for inlined functions | |
3009 | ||
3010 | ginternal-reset-location-views | |
3011 | Common Driver Var(debug_internal_reset_location_views) Init(2) | |
3012 | Compute locview reset points based on insn length estimates | |
3013 | ||
a1408eb3 | 3014 | gno- |
3015 | RejectNegative Joined Undocumented | |
3016 | ; Catch the gno- prefix, so it doesn't backtrack to g<level>. | |
3017 | ||
7a99ccab | 3018 | gno-pubnames |
14234f77 | 3019 | Common Driver Negative(gpubnames) Var(debug_generate_pub_sections, 0) Init(-1) |
7a99ccab | 3020 | Don't generate DWARF pubnames and pubtypes sections. |
3021 | ||
3022 | gpubnames | |
14234f77 | 3023 | Common Driver Negative(ggnu-pubnames) Var(debug_generate_pub_sections, 1) |
7a99ccab | 3024 | Generate DWARF pubnames and pubtypes sections. |
3025 | ||
ea096d3d | 3026 | ggnu-pubnames |
14234f77 | 3027 | Common Driver Negative(gno-pubnames) Var(debug_generate_pub_sections, 2) |
ea096d3d | 3028 | Generate DWARF pubnames and pubtypes sections with GNU extensions. |
3029 | ||
f45370f8 | 3030 | grecord-gcc-switches |
a1408eb3 | 3031 | Common Driver Var(dwarf_record_gcc_switches) Init(1) |
f45370f8 | 3032 | Record gcc command line switches in DWARF DW_AT_producer. |
3033 | ||
b35329c7 | 3034 | gsplit-dwarf |
a1408eb3 | 3035 | Common Driver Var(dwarf_split_debug_info) Init(0) |
8fb42bbc | 3036 | Generate debug information in separate .dwo files. |
b35329c7 | 3037 | |
b0e56fb1 | 3038 | gstabs |
14234f77 | 3039 | Common Driver JoinedOrMissing Negative(gstabs+) |
8fb42bbc | 3040 | Generate debug information in STABS format. |
b0e56fb1 | 3041 | |
3042 | gstabs+ | |
14234f77 | 3043 | Common Driver JoinedOrMissing Negative(gvms) |
8fb42bbc | 3044 | Generate debug information in extended STABS format. |
b0e56fb1 | 3045 | |
aa2fd885 | 3046 | gstatement-frontiers |
3047 | Common Driver Var(debug_nonbind_markers_p) Init(2) | |
3048 | Emit progressive recommended breakpoint locations. | |
3049 | ||
c16b6d19 | 3050 | gstrict-dwarf |
a1408eb3 | 3051 | Common Driver Report Var(dwarf_strict) Init(0) |
8fb42bbc | 3052 | Don't emit DWARF additions beyond selected version. |
c16b6d19 | 3053 | |
f1e7f337 | 3054 | gdescribe-dies |
3055 | Common Driver Report Var(flag_describe_dies) Init(0) | |
3056 | Add description attributes to some DWARF DIEs that have no name attribute. | |
3057 | ||
71278019 | 3058 | gtoggle |
14234f77 | 3059 | Common Driver Report Var(flag_gtoggle) |
8fb42bbc | 3060 | Toggle debug information generation. |
71278019 | 3061 | |
7b0db09c | 3062 | gvariable-location-views |
3063 | Common Driver Var(debug_variable_location_views, 1) Init(2) | |
3064 | Augment variable location lists with progressive views. | |
3065 | ||
3066 | gvariable-location-views=incompat5 | |
3067 | Common Driver RejectNegative Var(debug_variable_location_views, -1) Init(2) | |
3068 | ||
b0e56fb1 | 3069 | gvms |
14234f77 | 3070 | Common Driver JoinedOrMissing Negative(gxcoff) |
8fb42bbc | 3071 | Generate debug information in VMS format. |
b0e56fb1 | 3072 | |
3073 | gxcoff | |
14234f77 | 3074 | Common Driver JoinedOrMissing Negative(gxcoff+) |
8fb42bbc | 3075 | Generate debug information in XCOFF format. |
b0e56fb1 | 3076 | |
3077 | gxcoff+ | |
4c52ff7a | 3078 | Common Driver JoinedOrMissing Negative(gdwarf) |
8fb42bbc | 3079 | Generate debug information in extended XCOFF format. |
6f2f567f | 3080 | |
4185c905 | 3081 | Enum |
3082 | Name(compressed_debug_sections) Type(int) | |
3083 | ||
3084 | ; Since -gz= is completely handled in specs, the values aren't used and we | |
3085 | ; assign arbitrary constants. | |
3086 | EnumValue | |
3087 | Enum(compressed_debug_sections) String(none) Value(0) | |
3088 | ||
3089 | EnumValue | |
3090 | Enum(compressed_debug_sections) String(zlib) Value(1) | |
3091 | ||
3092 | EnumValue | |
3093 | Enum(compressed_debug_sections) String(zlib-gnu) Value(2) | |
3094 | ||
3095 | gz | |
3096 | Common Driver | |
8fb42bbc | 3097 | Generate compressed debug sections. |
4185c905 | 3098 | |
3099 | gz= | |
a1408eb3 | 3100 | Common Driver RejectNegative Joined Enum(compressed_debug_sections) |
8fb42bbc | 3101 | -gz=<format> Generate compressed debug sections in format <format>. |
4185c905 | 3102 | |
f37ef985 | 3103 | h |
3104 | Driver Joined Separate | |
3105 | ||
19bc000d | 3106 | iplugindir= |
3107 | Common Joined Var(plugindir_string) Init(0) | |
8fb42bbc | 3108 | -iplugindir=<dir> Set <dir> to be the default plugin directory. |
19bc000d | 3109 | |
77adc39e | 3110 | imultiarch |
3111 | Common Joined Separate RejectDriver Var(imultiarch) Init(0) | |
8fb42bbc | 3112 | -imultiarch <dir> Set <dir> to be the multiarch include subdirectory. |
77adc39e | 3113 | |
e28aa114 | 3114 | l |
3115 | Driver Joined Separate | |
3116 | ||
3bfde2af | 3117 | n |
3118 | Driver | |
3119 | ||
e28aa114 | 3120 | no-canonical-prefixes |
3121 | Driver | |
3122 | ||
cb22f930 | 3123 | nodefaultlibs |
3124 | Driver | |
3125 | ||
286f96fe | 3126 | nostartfiles |
3127 | Driver | |
3128 | ||
0e4340b2 | 3129 | nolibc |
3130 | Driver | |
3131 | ||
cb22f930 | 3132 | nostdlib |
3133 | Driver | |
3134 | ||
e690b385 | 3135 | o |
6bd9d862 | 3136 | Common Driver Joined Separate Var(asm_file_name) MissingArgError(missing filename after %qs) |
8fb42bbc | 3137 | -o <file> Place output into <file>. |
e690b385 | 3138 | |
3139 | p | |
2e9da478 | 3140 | Common Var(profile_flag) |
8fb42bbc | 3141 | Enable function profiling. |
e690b385 | 3142 | |
e28aa114 | 3143 | pass-exit-codes |
3144 | Driver Var(pass_exit_codes) | |
3145 | ||
e690b385 | 3146 | pedantic |
29438999 | 3147 | Common Alias(Wpedantic) |
e690b385 | 3148 | |
3149 | pedantic-errors | |
6bd9d862 | 3150 | Common Var(flag_pedantic_errors) |
8fb42bbc | 3151 | Like -pedantic but issue them as errors. |
e690b385 | 3152 | |
cb22f930 | 3153 | pg |
3154 | Driver | |
3155 | ||
e28aa114 | 3156 | pipe |
3157 | Driver Var(use_pipes) | |
3158 | ||
3159 | print-file-name= | |
3160 | Driver JoinedOrMissing Var(print_file_name) | |
3161 | ||
3162 | print-libgcc-file-name | |
3163 | Driver | |
3164 | ||
3165 | print-multi-directory | |
3166 | Driver Var(print_multi_directory) | |
3167 | ||
3168 | print-multi-lib | |
3169 | Driver Var(print_multi_lib) | |
3170 | ||
3171 | print-multi-os-directory | |
3172 | Driver Var(print_multi_os_directory) | |
8fb42bbc | 3173 | |
77adc39e | 3174 | print-multiarch |
3175 | Driver Var(print_multiarch) | |
e28aa114 | 3176 | |
3177 | print-prog-name= | |
3178 | Driver JoinedOrMissing Var(print_prog_name) | |
3179 | ||
3180 | print-search-dirs | |
3181 | Driver Var(print_search_dirs) | |
3182 | ||
3183 | print-sysroot | |
3184 | Driver Var(print_sysroot) | |
3185 | ||
3186 | print-sysroot-headers-suffix | |
3187 | Driver Var(print_sysroot_headers_suffix) | |
3188 | ||
3272db82 | 3189 | quiet |
e28aa114 | 3190 | Common Var(quiet_flag) RejectDriver |
8fb42bbc | 3191 | Do not display functions compiled or elapsed time. |
3272db82 | 3192 | |
3bfde2af | 3193 | r |
3194 | Driver | |
3195 | ||
3196 | s | |
3197 | Driver | |
3198 | ||
e28aa114 | 3199 | save-temps |
3200 | Driver | |
3201 | ||
3202 | save-temps= | |
3203 | Driver Joined | |
3204 | ||
3bfde2af | 3205 | t |
3206 | Driver | |
3207 | ||
e28aa114 | 3208 | time |
3209 | Driver Var(report_times) | |
3210 | ||
3211 | time= | |
3212 | Driver JoinedOrMissing | |
3213 | ||
5789e05b | 3214 | u |
3215 | Driver Joined Separate | |
3216 | ||
4b2a05b6 | 3217 | undef |
3218 | Driver | |
3219 | ; C option, but driver must not handle as "-u ndef". | |
3220 | ||
e28aa114 | 3221 | v |
6bd9d862 | 3222 | Common Driver Var(verbose_flag) |
8fb42bbc | 3223 | Enable verbose output. |
e28aa114 | 3224 | |
e690b385 | 3225 | version |
e28aa114 | 3226 | Common Var(version_flag) RejectDriver |
8fb42bbc | 3227 | Display the compiler's version. |
e690b385 | 3228 | |
3229 | w | |
2e9da478 | 3230 | Common Var(inhibit_warnings) |
8fb42bbc | 3231 | Suppress warnings. |
e690b385 | 3232 | |
e28aa114 | 3233 | wrapper |
3234 | Driver Separate Var(wrapper_string) | |
3235 | ||
3236 | x | |
3237 | Driver Joined Separate | |
3238 | ||
794febf8 | 3239 | shared |
6d1ab23d | 3240 | Driver RejectNegative Negative(static-pie) |
8fb42bbc | 3241 | Create a shared library. |
794febf8 | 3242 | |
e28aa114 | 3243 | shared-libgcc |
3244 | Driver | |
3245 | ||
3246 | specs | |
67089c6b | 3247 | Driver Separate Alias(specs=) |
e28aa114 | 3248 | |
3249 | specs= | |
3250 | Driver Joined | |
3251 | ||
cb22f930 | 3252 | static |
3253 | Driver | |
3254 | ||
e28aa114 | 3255 | static-libgcc |
3256 | Driver | |
3257 | ||
3258 | static-libgfortran | |
3259 | Driver | |
3260 | ; Documented for Fortran, but always accepted by driver. | |
3261 | ||
3262 | static-libstdc++ | |
3263 | Driver | |
3264 | ||
e440a328 | 3265 | static-libgo |
3266 | Driver | |
3267 | ; Documented for Go, but always accepted by driver. | |
3268 | ||
6db5160a | 3269 | static-libasan |
3270 | Driver | |
3271 | ||
b077695d | 3272 | static-libtsan |
3273 | Driver | |
3274 | ||
f8ff4a27 | 3275 | static-liblsan |
3276 | Driver | |
3277 | ||
9e46467d | 3278 | static-libubsan |
3279 | Driver | |
3280 | ||
5789e05b | 3281 | symbolic |
3282 | Driver | |
3283 | ||
e9abca4f | 3284 | no-pie |
1412b935 | 3285 | Driver RejectNegative Negative(shared) |
6d1ab23d | 3286 | Don't create a dynamically linked position independent executable. |
e9abca4f | 3287 | |
3288 | pie | |
3289 | Driver RejectNegative Negative(no-pie) | |
6d1ab23d | 3290 | Create a dynamically linked position independent executable. |
3291 | ||
3292 | static-pie | |
3293 | Driver RejectNegative Negative(pie) | |
3294 | Create a static position independent executable. | |
794febf8 | 3295 | |
f37ef985 | 3296 | z |
3297 | Driver Joined Separate | |
3298 | ||
fcf56aaf | 3299 | fipa-ra |
3300 | Common Report Var(flag_ipa_ra) Optimization | |
8fb42bbc | 3301 | Use caller save register across calls if possible. |
2cc49064 | 3302 | |
3272db82 | 3303 | ; This comment is to ensure we retain the blank line above. |