summary refs log tree commit diff
path: root/Completion/Unix/Command/_gcc
blob: a552bb2dbf9d5356e29dddedbafcfb7fd4651336 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
#compdef gcc g++ cc c++ llvm-gcc llvm-g++ clang clang++ -value-,LDFLAGS,-default- -value-,CFLAGS,-default- -value-,CXXFLAGS,-default- -value-,CPPFLAGS,-default- -P gcc-* -P g++-* -P c++-*

local curcontext="$curcontext" state line ret=1 expl args args2 march
typeset -A opt_args

if [[ "$service" = -value-* ]]; then
  compset -q
  words=( fake "$words[@]" )
  (( CURRENT++ ))
  if [[ "$service" = *LDFLAGS ]]; then
    args2=( '-R:runtime path:->rundir' )
  else
    args2=()
  fi
else
  args2=( '*:input file:_files -g "*.([cCmisSoak]|cc|cpp|cxx|ii|k[ih])(-.)"' )
fi

args=()
case $MACHTYPE in
m68*)
  args=(
    -m68000 -m68020 -m68020-40 -m68030 -m68040 -m68881
    -mbitfield -mc68000 -mc68020 -mfpa -mnobitfield
    -mrtd -mshort -msoft-float
  )
  ;;
vax)
  args=(
    -mg -mgnu -munix
  )
  ;;
c[1234]*)
  args=(
    -mc1 -mc2 -mc32 -mc34 -mc38
    -margcount -mnoargcount
    -mlong32 -mlong64
    -mvolatile-cache -mvolatile-nocache
  )
  ;;
amd290?0)
  args=(
    -m29000 -m29050 -mbw -mnbw -mdw -mndw
    -mlarge -mnormal -msmall
    -mkernel-registers -mno-reuse-arg-regs
    -mno-stack-check -mno-storem-bug
    -mreuse-arg-regs -msoft-float -mstack-check
    -mstorem-bug -muser-registers
  )
  ;;
arm)
  args=(
    -mapcs -m2 -m3 -m6 -mbsd -mxopen -mno-symrename
  )
  ;;
m88k)
  args=(
    -m88000 -m88100 -m88110 -mbig-pic
    -mcheck-zero-division -mhandle-large-shift
    -midentify-revision -mno-check-zero-division
    -mno-ocs-debug-info -mno-ocs-frame-position
    -mno-optimize-arg-area -mno-serialize-volatile
    -mno-underscores -mocs-debug-info
    -mocs-frame-position -moptimize-arg-area
    -mserialize-volatile -msvr3
    -msvr4 -mtrap-large-shift -muse-div-instruction
    -mversion-03.00 -mwarn-passed-structs
    '-mshort-data--:maximum displacement:'
  )
  ;;
rs6000|powerpc*)
  args=(
    '-mcpu=:CPU type:(rios1 rios2 rsc 501 603 604 power powerpc 403 common)'
    -mpower -mno-power -mpower2 -mno-power2
    -mpowerpc -mno-powerpc
    -mpowerpc-gpopt -mno-powerpc-gpopt
    -mpowerpc-gfxopt -mno-powerpc-gfxopt
    -mnew-mnemonics -mno-new-mnemonics
    -mfull-toc -mminimal-toc -mno-fop-in-toc -mno-sum-in-toc
    -msoft-float -mhard-float -mmultiple -mno-multiple
    -mstring -mno-string -mbit-align -mno-bit-align
    -mstrict-align -mno-strict-align -mrelocatable -mno-relocatable
    -mtoc -mno-toc -mtraceback -mno-traceback
    -mlittle -mlittle-endian -mbig -mbig-endian
    -mcall-aix -mcall-sysv -mprototype
  )
  ;;
romp)
  args=(
    -mcall-lib-mul -mfp-arg-in-fpregs -mfp-arg-in-gregs
    -mfull-fp-blocks -mhc-struct-return -min-line-mul
    -mminimum-fp-blocks -mnohc-struct-return
  )
  ;;
mips*)
  args=(
    '-mcpu=:CPU type:(r2000 r3000 r4000 r4400 r4600 r6000)'
    -mabicalls -membedded-data
    -membedded-pic -mfp32 -mfp64 -mgas -mgp32 -mgp64
    -mgpopt -mhalf-pic -mhard-float -mint64 -mips1
    -mips2 -mips3 -mlong64 -mlong-calls -mmemcpy
    -mmips-as -mmips-tfile -mno-abicalls
    -mno-embedded-data -mno-embedded-pic
    -mno-gpopt -mno-long-calls
    -mno-memcpy -mno-mips-tfile -mno-rnames -mno-stats
    -mrnames -msoft-float
    -m4650 -msingle-float -mmad
    -mstats -EL -EB -nocpp
    '-G:maximum size for small section objects:'
  )
  ;;
i[3456]86|x86_64)
  march="native i386 i486 i586 pentium pentium-mmx pentiumpro i686 pentium2 pentium3 pentium3m pentium-m pentium4 pentium4m prescott nocona core2 corei7 corei7-avx core-avx-i core-avx2 atom k6 k6-2 k6-3 athlon athlon-tbird athlon-4 athlon-xp athlon-mp k8 opteron athlon64 athlon-fx k8-sse3 opteron-sse3 athlon64-sse3 amdfam10 barcelona bdver1 bdver2 bdver3 btver1 btver2 winchip-c6 winchip2 c3 c3-2 geode"
  args=(
    '-mtune=-[tune code for CPU type]:CPU type:('"$march"')'
    #'-mtune-ctrl=-[Fine grain control of tune features]:feature-list:' #for dev use only
    '-march=-[generate instructions for CPU type]:CPU type:('"generic $march"')'
    -mthreads
    '-mreg-alloc=:default register allocation order:' 

    # arguments with options
    '-mabi=-[Generate code that conforms to the given ABI]:abi:(ms sysv)'
    '-maddress-mode=-[Use given address mode]:address mode:(short long)'
    '-malign-data=-[Use the given data alignment]:type:(compat abi cacheline)'
    '-malign-functions=-[Function starts are aligned to this power of 2]: **2 base for function alignment: '
    '-malign-jumps=-[Jump targets are aligned to this power of 2]: **2 base for jump goal alignment: '
    '-malign-loops=-[Loop code aligned to this power of 2]: **2 base for loop alignment: '
    '-masm=-[Use given assembler dialect]:asm dialect:(att intel)'
    '-mbranch-cost=-[Branches are this expensive (1-5, arbitrary units)]:branch cost (1-5): '
    '-mcmodel=-[Use given x86-64 code model]:memory model:(32 small kernel medium large)'
    '-mfpmath=-[Generate floating point mathematics using given instruction set]:FPU type:(387 sse sse,387 both)'
    '-mfunction-return=-[Convert function return to call and return thunk]:choice:(keep thunk thunk-inline thunk-extern)'
    '-mincoming-stack-boundary=-[Assume incoming stack aligned to this power of 2]:assumed size of boundary: '
    '-mindirect-branch=-[Convert indirect call and jump to call and return thunks]:choice:(keep thunk thunk-inline thunk-extern)'
    '-mlarge-data-threshold=-[Data greater than given threshold will go into .ldata section in x86-64 medium model]:threshold: '
    '-mmem'{set,cpy}'-strategy=-[Specify memcpy expansion strategy when expected size is known]:strategy:'
    '-mpreferred-stack-boundary=-[Attempt to keep stack aligned to this power of 2]:size of boundary: '
    '-mrecip=-[Control generation of reciprocal estimates]::instruction:(all none div divf divd rsqrt rsqrtf rsqrtd)' #TODO comma separated and can have !
    '-mregparm=-[Number of registers used to pass integer arguments]:number of integer argument registers: '
    '-mstack-protector-guard=-[Use given stack-protector guard]:guard:(global tls)'
    '-mstringop-strategy=-[Chose strategy to generate stringop using]:stringop strategy:(byte_loop libcall loop rep_4byte rep_8byte rep_byte unrolled_loop)'
    '-mtls-dialect=-[Use given thread-local storage dialect]:TLS dialect:(gnu gnu2)'
    '-mveclibabi=-[Vector library ABI to use]:vector library ABI:(acml svml)'
    
    # arguments without options
    '-m3dnow[Support 3DNow! built-in functions]'
    '-m3dnowa[Support Athlon 3Dnow! built-in functions]'
    '-m8bit-idiv[Expand 32bit/64bit integer divide into 8bit unsigned integer divide with run-time check]'
    '-m16[Generate 16bit i386 code]'
    '-m32[Generate 32bit i386 code]'
    '-m64[Generate 64bit x86-64 code]'
    '-m96bit-long-double[sizeof(long double) is 12]'
    '-m128bit-long-double[sizeof(long double) is 16]'
    '-m80387[Use hardware fp]'
    '-mabm[Support code generation of Advanced Bit Manipulation (ABM) instructions]'
    '-maccumulate-outgoing-args[Reserve space for outgoing arguments in the function prologue]'
    '-madx[Support flag-preserving add-carry instructions]'
    '-maes[Support AES built-in functions and code generation]'
    '-malign-double[Align some doubles on dword boundary]'
    '-malign-stringops[Align destination of the string operations]'
    '-mandroid[Generate code for the Android platform]'
    '-mavx2[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX and AVX2 built-in functions and code generation]'
    '-mavx256-split-unaligned-load[Split 32-byte AVX unaligned load]'
    '-mavx256-split-unaligned-store[Split 32-byte AVX unaligned store]'
    '-mavx512bw[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512BW built- in functions and code generation]'
    '-mavx512cd[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512CD built- in functions and code generation]'
    '-mavx512dq[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512DQ built- in functions and code generation]'
    '-mavx512er[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512ER built- in functions and code generation]'
    '-mavx512f[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F built-in functions and code generation]'
    '-mavx512ifma[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512IFMA built-in functions and code generation]'
    '-mavx512pf[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512PF built- in functions and code generation]'
    '-mavx512vbmi[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512VBMI built-in functions and code generation]'
    '-mavx512vl[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512VL built- in functions and code generation]'
    '-mavx512vpopcntdq[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX512F and AVX512VPOPCNTDQ built-in functions and code generation]'
    '-mavx5124fmaps[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX512F and AVX5124FMAPS built- in functions and code generation]'
    '-mavx5124vnniw[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX512F and AVX5124VNNIW built- in functions and code generation]'
    '-mavx[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2 and AVX built-in functions and code generation]'
    '-mbionic[Use Bionic C library]'
    '-mbmi2[Support BMI2 built-in functions and code generation]'
    '-mbmi[Support BMI built-in functions and code generation]'
    '-mcld[Generate cld instruction in the function prologue]'
    '-mclflushopt[Support CLFLUSHOPT instructions]'
    '-mclwb[Support CLWB instruction]'
    '-mclzero[Support CLZERO built-in functions and code generation]'
    '-mcrc32[Support code generation of crc32 instruction]'
    '-mcx16[Support code generation of cmpxchg16b instruction]'
    '-mdispatch-scheduler[Do dispatch scheduling if processor is bdver1, bdver2, bdver3, bdver4 or znver1 and Haifa scheduling is selected]'
    '-mf16c[Support F16C built-in functions and code generation]'
    '-mfancy-math-387[Generate sin, cos, sqrt for FPU]'
    '-mfentry[Emit profiling counter call at function entry before prologue]'
    '-mfma4[Support FMA4 built-in functions and code generation]'
    '-mfma[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX and FMA built-in functions and code generation]'
    '-mforce-drap[Always use Dynamic Realigned Argument Pointer (DRAP) to realign stack]'
    '-mfp-ret-in-387[Return values of functions in FPU registers]'
    '-mfsgsbase[Support FSGSBASE built-in functions and code generation]'
    '-mfxsr[Support FXSAVE and FXRSTOR instructions]'
    '-mgeneral-regs-only[Generate code which uses only the general registers]'
    '-mglibc[Use GNU C library]'
    '-mhard-float[Use hardware fp]'
    '-mhle[Support Hardware Lock Elision prefixes]'
    '-miamcu[Generate code that conforms to Intel MCU psABI]'
    '-mieee-fp[Use IEEE math for fp comparisons]'
    '-mindirect-branch-register[Force indirect call and jump via register]'
    '-minline-all-stringops[Inline all known string operations]'
    '-minline-stringops-dynamically[Inline memset/memcpy string operations, but perform inline version only for small blocks]'
    '-mlong-double-64[Use 64-bit long double]'
    '-mlong-double-80[Use 80-bit long double]'
    '-mlong-double-128[Use 128-bit long double]'
    '-mlwp[Support LWP built-in functions and code generation]'
    '-mlzcnt[Support LZCNT built-in function and code generation]'
    '-mmitigate-rop[Attempt to avoid generating instruction sequences containing ret bytes]'
    '-mmmx[Support MMX built-in functions]'
    '-mmovbe[Support code generation of movbe instruction]'
    '-mmpx[Support MPX code generation]'
    '-mms-bitfields[Use native (MS) bitfield layout]'
    '-mmusl[Use musl C library]'
    '-mmwaitx[Support MWAITX and MONITORX built-in functions and code generation]'
    '-mno-default[Clear all tune features]'
    '-mno-sse4[Do not support SSE4.1 and SSE4.2 built-in functions and code generation]'
    '-mnop-mcount[Generate mcount/__fentry__ calls as nops. To activate they need to be patched in]'
    '-momit-leaf-frame-pointer[Omit the frame pointer in leaf functions]'
    '-mpc32[Set 80387 floating-point precision to 32-bit]'
    '-mpc64[Set 80387 floating-point precision to 64-bit]'
    '-mpc80[Set 80387 floating-point precision to 80-bit]'
    '-mpclmul[Support PCLMUL built-in functions and code generation]'
    '-mpku[Support PKU built-in functions and code generation]'
    '-mpopcnt[Support code generation of popcnt instruction]'
    '-mprefer-avx128[Use 128-bit AVX instructions instead of 256-bit AVX instructions in the auto-vectorizer]'
    '-mprefetchwt1[Support PREFETCHWT1 built-in functions and code generation]'
    '-mprfchw[Support PREFETCHW instruction]'
    '-mpush-args[Use push instructions to save outgoing arguments]'
    '-mrdpid[Support RDPID built-in functions and code generation]'
    '-mrdrnd[Support RDRND built-in functions and code generation]'
    '-mrdseed[Support RDSEED instruction]'
    '-mrecip[Generate reciprocals instead of divss and sqrtss]'
    '-mrecord-mcount[Generate __mcount_loc section with all mcount or __fentry__ calls]'
    '-mred-zone[Use red-zone in the x86-64 code]'
    '-mrtd[Alternate calling convention]'
    '-mrtm[Support RTM built-in functions and code generation]'
    '-msahf[Support code generation of sahf instruction in 64bit x86-64 code]'
    '-msgx[Support SGX built-in functions and code generation]'
    '-msha[Support SHA1 and SHA256 built-in functions and code generation]'
    '-mskip-rax-setup[Skip setting up RAX register when passing variable arguments]'
    '-msoft-float[Do not use hardware fp]'
    '-msse2[Support MMX, SSE and SSE2 built-in functions and code generation]'
    '-msse2avx[Encode SSE instructions with VEX prefix]'
    '-msse3[Support MMX, SSE, SSE2 and SSE3 built-in functions and code generation]'
    '-msse4.1[Support MMX, SSE, SSE2, SSE3, SSSE3 and SSE4.1 built-in functions and code generation]'
    '-msse4.2[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1 and SSE4.2 built-in functions and code generation]'
    '-msse4[Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1 and SSE4.2 built-in functions and code generation]'
    '-msse4a[Support MMX, SSE, SSE2, SSE3 and SSE4A built-in functions and code generation]'
    '-msse[Support MMX and SSE built-in functions and code generation]'
    '-msseregparm[Use SSE register passing conventions for SF and DF mode]'
    '-mssse3[Support MMX, SSE, SSE2, SSE3 and SSSE3 built-in functions and code generation]'
    '-mstack-arg-probe[Enable stack probing]'
    '-mstackrealign[Realign stack in prologue]'
    '-mstv[Disable Scalar to Vector optimization pass transforming 64-bit integer computations into a vector ones]'
    '-mtbm[Support TBM built-in functions and code generation]'
    '-mtls-direct-seg-refs[Use direct references against %gs when accessing tls data]'
    '-muclibc[Use uClibc C library]'
    '-mvect8-ret-in-mem[Return 8-byte vectors in memory]'
    '-mvzeroupper[Generate vzeroupper instruction before a transfer of control flow out of the function]'
    '-mx32[Generate 32bit x86-64 code]'
    '-mxop[Support XOP built-in functions and code generation]'
    '-mxsave[Support XSAVE and XRSTOR instructions]'
    '-mxsavec[Support XSAVEC instructions]'
    '-mxsaveopt[Support XSAVEOPT instruction]'
    '-mxsaves[Support XSAVES and XRSTORS instructions]'
  )
  ;;
hppa*)
  args=(
    -mdisable-fpregs -mdisable-indexing -mfast-indirect-calls
    -mgas -mjump-in-delay -mlong-millicode-calls -mno-disable-fpregs
    -mno-disable-indexing -mno-fast-indirect-calls -mno-gas
    -mno-jump-in-delay -mno-millicode-long-calls
    -mno-portable-runtime -mno-soft-float -msoft-float
    -mpa-risc-1-0 -mpa-risc-1-1 -mportable-runtime
    '-mschedule=:code scheduling constraints:(700 7100 7100LC)'
  )
  ;;
i960)
  args=(
    -m{ka,kb,mc,ca,cf,sa,sb}
    -masm-compat -mclean-linkage
    -mcode-align -mcomplex-addr -mleaf-procedures
    -mic-compat -mic2.0-compat -mic3.0-compat
    -mintel-asm -mno-clean-linkage -mno-code-align
    -mno-complex-addr -mno-leaf-procedures
    -mno-old-align -mno-strict-align -mno-tail-call
    -mnumerics -mold-align -msoft-float -mstrict-align
    -mtail-call
  )
  ;;
sparc)
  args=(
    -mapp-regs -mno-app-regs
    -mfpu -mhard-float
    -mno-fpu -msoft-float
    -mhard-quad-float
    -msoft-quad-float
    -mno-unaligned-doubles
    -munaligned-doubles
    -mfaster-structs -mno-faster-structs
    -mimpure-text
    '-mcpu=:CPU type:(v7 cypress v8 supersparc sparclite f930 f934 hypersparc sparclite86x sparclet tsc701 v9 ultrasparc ultrasparc3)'
    '-mtune=:CPU type:(cypress supersparc hypersparc f930 f934 sparclite86x tsc701 ultrasparc ultrasparc3)'
    -mv8plus -mno-v8plus
    -mvis -mno-vis
    -mlittle-endian
    -m32 -m64
    '-mcmodel=:memory model:(medlow medmid medany embmedany)'
    -mstack-bias -mno-stack-bias
    -mv8
    -mcypress -mepilogue -mflat
    -mno-flat
    -mno-epilogue
    -msparclite -msupersparc
    -mmedlow -mmedany
    -mint32 -mint64 -mlong32 -mlong64
  )
  ;;
alpha*)
  args=(
    -mfp-regs -mno-fp-regs -mno-soft-float
    -msoft-float
  )
  ;;
clipper)
  args=(
    -mc300 -mc400
  )
  ;;
h8/300)
  args=(
    -mrelax -mh
  )
  ;;
esac

if [[ "$service" = clang* ]]; then
    args=(
        $args
        -flto -emit-llvm
        "-Qunused-arguments[don't emit warning for unused driver arguments]"
        --analyze
        -fshow-column -fshow-source-location -fcaret-diagnostics -fdiagnostics-fixit-info
        -fdiagnostics-parseable-fixits -fdiagnostics-print-source-range-info
        -fprint-source-range-info -fdiagnostics-show-option -fmessage-length
    )
fi

local -a languages
languages=(
  c  c-header  cpp-output
  c++  c++-header  c++-cpp-output
  objective-c  objective-c-header  objective-c-cpp-output
  objective-c++ objective-c++-header objective-c++-cpp-output
  assembler  assembler-with-cpp
  ada
  f77  f77-cpp-input f95  f95-cpp-input
  go
  java
  brig
  none
)

# generic options (from --help)
args+=(
  -a -C -H -P -s
  '-###[print commands to run this compilation]'
  '-o:output file:_files -g "^*.(c|h|cc|C|cxx)(-.)"'
  '-x[Specify the language of the following input files]:input file language:('"$languages"')'
  '+e-:virtual function definitions in classes:((0\:only\ interface 1\:generate\ code))'
  '-d-:dump:->dump'
  '-g-::debugging information type or level:(0 1 2 3 gdb coff stabs stabs+ dwarf dwarf+ dwarf-2 dwarf-3 dwarf-4 xcoff xcoff+)'
  '-O-::optimization level:((0 1 2 3 g\:optimize\ for\ debugging\ experience s\:optimize\ for\ space fast\:optimize\ for\ speed\ disregarding\ exact\ standards\ compliance))'
  '*-M-::output dependencies:((M\:only\ user\ header\ files MD\:output\ to\ file G\:treat\ missing\ header\ files\ as\ generated))'
  '*-A-:define assertion:'
  '*-D-:define macro:'
  '*-U-:undefine macro:'
  '-E[Preprocess only; do not compile, assemble or link]'
  '-S[Compile only; do not assemble or link]'
  '-c[Compile and assemble, but do not link]'
  '*-Wp,-:preprocessor option:'
  '*-Wl,-:linker option:'
  '*-Xpreprocessor:preprocessor option:'
  '*-Xlinker:linker option:'
  '*-Xassembler:assembler option:'
  '*-u:pretend symbol to be undefined:'
  '*-Wa,-:assembler option:'
  '*-l:library:->library'
  '*-L-:library search path:_files -/'
  '*-I-:header file search path:_files -/'
  '-B-[Add <prefix> to the compiler'\''s search paths]:executable prefix:_files -/'
  '-b:target machine:'
  '-V:specify compiler version:'
  '--version[Display compiler version information]'
  '-print-file-name=-[Display the full path to library <library>]:library:->library'
  '-print-prog-name=-[Display the full path to compiler component <program>]:program:'
  '*-specs=-[Override built-in specs with the contents of <file>]:file:_files'
  '-std=-[assume that the input sources are for specified standard]:standard:(c90 c89 c99 c11 gnu90 gnu89 gnu99 gnu11 c++98 c++03 gnu++98 gnu++03 c++11 gnu++11 c++1y gnu++1y c++14 gnu++14 c++1z gnu++1z c++17 gnu++17 c++2a gnu++2a)'
  '*-include:include file:_files -g \*.h\(-.\)'
  '*-imacros:macro input file:_files -g \*.h\(-.\)'
  '*-idirafter:second include path directory:_files -/'
  '*-iprefix:prefix:_files'
  '*-iwithprefix:second include path directory:_files -/'
  '*-iwithprefixbefore:main include path directory:_files -/'
  '*-isystem:second include path directory (system):_files -/'
  '--sysroot=-[Use <directory> as the root directory for headers and libraries]:directory:_files -/'
  '-pass-exit-codes[Exit with highest error code from a phase]'
  '*--help=-[Display this information]:class:->help'
  '--target-help[Display target specific command line options]'
  '-dumpspecs[Display all of the built in spec strings]'
  '-dumpversion[Display the version of the compiler]'
  '-dumpmachine[Display the compiler'\''s target processor]'
  '-print-search-dirs[Display the directories in the compiler'\''s search path]'
  '-print-libgcc-file-name[Display the name of the compiler'\''s companion library]'
  '-print-multiarch[Display the target'\''s normalized GNU triplet, used as a component in the library path]'
  '-print-multi-directory[Display the root directory for versions of libgcc]'
  '-print-multi-lib[Display the mapping between command line options and multiple library search directories]'
  '-print-multi-os-directory[Display the relative path to OS libraries]'
  '-print-sysroot[Display the target libraries directory]'
  '-print-sysroot-headers-suffix[Display the sysroot suffix used to find headers]'
  '-save-temps[Do not delete intermediate files]'
  '-no-canonical-prefixes[Do not canonicalize paths when building relative prefixes to other gcc components]'
  '-pipe[Use pipes rather than intermediate files]'
  '-pie[Create a position independent executable]'
  '-shared[Create a shared library]'
  '-time[Time the execution of each subprocess]'
)

# warnings (from --help=warnings), note some -W options are listed by --help=common instead
args+=(
# --help=warnings,^joined
  '-W[This switch is deprecated; use -Wextra instead]'
  '-Wabi-tag[Warn if a subobject has an abi_tag attribute that the complete object type does not have]'
  '-Wabi[Warn about things that will change when compiling with an ABI-compliant compiler]'
  '-Waddress[Warn about suspicious uses of memory addresses]'
  '-Waggregate-return[Warn about returning structures, unions or arrays]'
  '-Waggressive-loop-optimizations[Warn if a loop with constant number of iterations triggers undefined behavior]'
  '-Waliasing[Warn about possible aliasing of dummy arguments]'
  '-Walign-commons[Warn about alignment of COMMON blocks]'
  '-Wall[Enable most warning messages]'
  '-Walloc-zero[Warn for calls to allocation functions that specify zero bytes]'
  '-Walloca[Warn on any use of alloca]'
  '-Wampersand[Warn about missing ampersand in continued character constants]'
  '-Wargument-mismatch[Warn about type and rank mismatches between arguments and parameters]'
  '-Warray-bounds[Warn if an array is accessed out of bounds]'
  '-Warray-temporaries[Warn about creation of array temporaries]'
  '-Wassign-intercept[Warn whenever an Objective-C assignment is being intercepted by the garbage collector]'
  '-Wattributes[Warn about inappropriate attribute usage]'
  '-Wbad-function-cast[Warn about casting functions to incompatible types]'
  '-Wbool-compare[Warn about boolean expression compared with an integer value different from true/false]'
  '-Wbool-operation[Warn about certain operations on boolean expressions]'
  '-Wbuiltin-declaration-mismatch[Warn when a built-in function is declared with the wrong signature]'
  '-Wbuiltin-macro-redefined[Warn when a built-in preprocessor macro is undefined or redefined]'
  '-Wc++-compat[Warn about C constructs that are not in the common subset of C and C++]'
  '-Wc++0x-compat[Deprecated in favor of -Wc++11-compat]'
  '-Wc++1z-compat[Warn about C++ constructs whose meaning differs between ISO C++ 2014 and (forthcoming) ISO C++ 201z(7?)]'
  '-Wc++11-compat[Warn about C++ constructs whose meaning differs between ISO C++ 1998 and ISO C++ 2011]'
  '-Wc++14-compat[Warn about C++ constructs whose meaning differs between ISO C++ 2011 and ISO C++ 2014]'
  '-Wc-binding-type[Warn if the type of a variable might be not interoperable with C]'
  '-Wc90-c99-compat[Warn about features not present in ISO C90, but present in ISO C99]'
  '-Wc99-c11-compat[Warn about features not present in ISO C99, but present in ISO C11]'
  '-Wcast-align[Warn about pointer casts which increase alignment]'
  '-Wcast-qual[Warn about casts which discard qualifiers]'
  '-Wchar-subscripts[Warn about subscripts whose type is "char"]'
  '-Wcharacter-truncation[Warn about truncated character expressions]'
  '-Wchkp[Warn about memory access errors found by Pointer Bounds Checker]'
  '-Wclobbered[Warn about variables that might be changed by "longjmp" or "vfork"]'
  '-Wcomment[Warn about possibly nested block comments, and C++ comments spanning more than one physical line]'
  '-Wcomments[Synonym for -Wcomment]'
  '-Wcompare-reals[Warn about equality comparisons involving REAL or COMPLEX expressions]'
  '-Wconditionally-supported[Warn for conditionally-supported constructs]'
  '-Wconversion-extra[Warn about most implicit conversions]'
  '-Wconversion-null[Warn for converting NULL from/to a non-pointer type]'
  '-Wconversion[Warn for implicit type conversions that may change a value]'
  '-Wcoverage-mismatch[Warn in case profiles in -fprofile-use do not match]'
  '-Wcpp[Warn when a #warning directive is encountered]'
  '-Wctor-dtor-privacy[Warn when all constructors and destructors are private]'
  '-Wdangling-else[Warn about dangling else]'
  '-Wdate-time[Warn about __TIME__, __DATE__ and __TIMESTAMP__ usage]'
  '-Wdeclaration-after-statement[Warn when a declaration is found after a statement]'
  '-Wdelete-incomplete[Warn when deleting a pointer to incomplete type]'
  '-Wdelete-non-virtual-dtor[Warn about deleting polymorphic objects with non- virtual destructors]'
  '-Wdeprecated-declarations[Warn about uses of __attribute__((deprecated)) declarations]'
  '-Wdeprecated[Warn if a deprecated compiler feature, class, method, or field is used]'
  '-Wdesignated-init[Warn about positional initialization of structs requiring designated initializers]'
  '-Wdisabled-optimization[Warn when an optimization pass is disabled]'
  '-Wdiscarded-array-qualifiers[Warn if qualifiers on arrays which are pointer targets are discarded]'
  '-Wdiscarded-qualifiers[Warn if type qualifiers on pointers are discarded]'
  '-Wdiv-by-zero[Warn about compile-time integer division by zero]'
  '-Wdouble-promotion[Warn about implicit conversions from "float" to "double"]'
  '-Weffc\+\+[Warn about violations of Effective C++ style rules]'
  '-Wduplicate-decl-specifier[Warn when a declaration has duplicate const, volatile, restrict or _Atomic specifier]'
  '-Wduplicated-branches[Warn about duplicated branches in if-else statements]'
  '-Wduplicated-cond[Warn about duplicated conditions in an if-else-if chain]'
  '-Weffc++[Warn about violations of Effective C++ style rules]'
  '-Wempty-body[Warn about an empty body in an if or else statement]'
  '-Wendif-labels[Warn about stray tokens after #else and #endif]'
  '-Wenum-compare[Warn about comparison of different enum types]'
#this still exists but makes completing -Werror= less convenient
  #'-Werror-implicit-function-declaration[This switch is deprecated; use -Werror=implicit-fun
  '-Wexpansion-to-defined[Warn if "defined" is used outside #if]'
  '-Wextra[Print extra (possibly unwanted) warnings]'
  '-Wfloat-conversion[Warn for implicit type conversions that cause loss of floating point precision]'
  '-Wfloat-equal[Warn if testing floating point numbers for equality]'
  '-Wformat-contains-nul[Warn about format strings that contain NUL bytes]'
  '-Wformat-extra-args[Warn if passing too many arguments to a function for its format string]'
  '-Wformat-nonliteral[Warn about format strings that are not literals]'
  '-Wformat-overflow[Warn about function calls with format strings that write past the end of the destination region]'
  '-Wformat-security[Warn about possible security problems with format functions]'
  '-Wformat-signedness[Warn about sign differences with format functions]'
  '-Wformat-truncation[Warn about calls to snprintf and similar functions that truncate output. Same as -Wformat- truncation=1.  Same as -Wformat-truncation=]'
  '-Wformat-y2k[Warn about strftime formats yielding 2-digit years]'
  '-Wformat-zero-length[Warn about zero-length formats]'
  '-Wformat[Warn about printf/scanf/strftime/strfmon format string anomalies]'
  '-Wframe-address[Warn when __builtin_frame_address or __builtin_return_address is used unsafely]'
  '-Wfree-nonheap-object[Warn when attempting to free a non-heap object]'
  '-Wfunction-elimination[Warn about function call elimination]'
  '-Whsa[Warn when a function cannot be expanded to HSAIL]'
  '-Wignored-attributes[Warn whenever attributes are ignored]'
  '-Wignored-qualifiers[Warn whenever type qualifiers are ignored]'
  '-Wimplicit-function-declaration[Warn about implicit function declarations]'
  '-Wimplicit-int[Warn when a declaration does not specify a type]'
  '-Wimplicit-interface[Warn about calls with implicit interface]'
  '-Wimplicit-procedure[Warn about called procedures not explicitly declared]'
  '-Wimplicit[Warn about implicit declarations]'
  '-Wincompatible-pointer-types[Warn when there is a conversion between pointers that have incompatible types]'
  '-Winherited-variadic-ctor[Warn about C++11 inheriting constructors when the base has a variadic constructor]'
  '-Winit-self[Warn about variables which are initialized to themselves]'
  '-Winline[Warn when an inlined function cannot be inlined]'
  '-Wint-conversion[Warn about incompatible integer to pointer and pointer to integer conversions]'
  '-Wint-in-bool-context[Warn for suspicious integer expressions in boolean context]'
  '-Wint-to-pointer-cast[Warn when there is a cast to a pointer from an integer of a different size]'
  '-Winteger-division[Warn about constant integer divisions with truncated results]'
  '-Wintrinsic-shadow[Warn if a user-procedure has the same name as an intrinsic]'
  '-Wintrinsics-std[Warn on intrinsics not part of the selected standard]'
  '-Winvalid-memory-model[Warn when an atomic memory model parameter is known to be outside the valid range]'
  '-Winvalid-offsetof[Warn about invalid uses of the "offsetof" macro]'
  '-Winvalid-pch[Warn about PCH files that are found but not used]'
  '-Wjump-misses-init[Warn when a jump misses a variable initialization]'
  '-Wline-truncation[Warn about truncated source lines]'
  '-Wliteral-suffix[Warn when a string or character literal is followed by a ud-suffix which does not begin with an underscore]'
  '-Wlogical-not-parentheses[Warn when logical not is used on the left hand side operand of a comparison]'
  '-Wlogical-op[Warn when a logical operator is suspiciously always evaluating to true or false]'
  '-Wlong-long[Do not warn about using "long long" when -pedantic]'
  '-Wlto-type-mismatch[During link time optimization warn about mismatched types of global declarations]'
  '-Wmain[Warn about suspicious declarations of "main"]'
  '-Wmaybe-uninitialized[Warn about maybe uninitialized automatic variables]'
  '-Wmemset-elt-size[Warn about suspicious calls to memset where the third argument contains the number of elements not multiplied by the element size]'
  '-Wmemset-transposed-args[Warn about suspicious calls to memset where the third argument is constant literal zero and the second is not]'
  '-Wmisleading-indentation[Warn when the indentation of the code does not reflect the block structure]'
  '-Wmissing-braces[Warn about possibly missing braces around initializers]'
  '-Wmissing-declarations[Warn about global functions without previous declarations]'
  '-Wmissing-field-initializers[Warn about missing fields in struct initializers]'
  '-Wmissing-include-dirs[Warn about user-specified include directories that do not exist]'
  '-Wmissing-parameter-type[Warn about function parameters declared without a type specifier in K&R-style functions]'
  '-Wmissing-prototypes[Warn about global functions without prototypes]'
  '-Wmudflap[Warn about constructs not instrumented by -fmudflap]'
  '-Wmultichar[Warn about use of multi-character character constants]'
  '-Wmultiple-inheritance[Warn on direct multiple inheritance]'
  '-Wnamespaces[Warn on namespace definition]'
  '-Wnarrowing[Warn about narrowing conversions within { } that are ill-formed in C++11]'
  '-Wnested-externs[Warn about "extern" declarations not at file scope]'
  '-Wnoexcept-type[Warn if C++1z noexcept function type will change the mangled name of a symbol]'
  '-Wnoexcept[Warn when a noexcept expression evaluates to false even though the expression can''t actually throw]'
  '-Wnon-template-friend[Warn when non-templatized friend functions are declared within a template]'
  '-Wnon-virtual-dtor[Warn about non-virtual destructors]'
  '-Wnonnull-compare[Warn if comparing pointer parameter with nonnull attribute with NULL]'
  '-Wnonnull[Warn about NULL being passed to argument slots marked as requiring non-NULL]'
  '-Wnull-dereference[Warn if dereferencing a NULL pointer may lead to erroneous or undefined behavior]'
  '-Wodr[Warn about some C++ One Definition Rule violations during link time optimization]'
  '-Wold-style-cast[Warn if a C-style cast is used in a program]'
  '-Wold-style-declaration[Warn for obsolescent usage in a declaration]'
  '-Wold-style-definition[Warn if an old-style parameter definition is used]'
  '-Wopenmp-simd[Warn if a simd directive is overridden by the vectorizer cost model]'
  '-Woverflow[Warn about overflow in arithmetic expressions]'
  '-Woverlength-strings[Warn if a string is longer than the maximum portable length specified by the standard]'
  '-Woverloaded-virtual[Warn about overloaded virtual function names]'
  '-Woverride-init-side-effects[Warn about overriding initializers with side effects]'
  '-Woverride-init[Warn about overriding initializers without side effects]'
  '-Wpacked-bitfield-compat[Warn about packed bit-fields whose offset changed in GCC 4.4]'
  '-Wpacked[Warn when the packed attribute has no effect on struct layout]'
  '-Wpadded[Warn when padding is required to align structure members]'
  '-Wparentheses[Warn about possibly missing parentheses]'
  '-Wpedantic[Issue warnings needed for strict compliance to the standard]'
  '-Wplacement-new[Warn for placement new expressions with undefined behavior.  Same as -Wplacement-new=]'
  '-Wpmf-conversions[Warn when converting the type of pointers to member functions]'
  '-Wpointer-arith[Warn about function pointer arithmetic]'
  '-Wpointer-compare[Warn when a pointer is compared with a zero character constant]'
  '-Wpointer-sign[Warn when a pointer differs in signedness in an assignment]'
  '-Wpointer-to-int-cast[Warn when a pointer is cast to an integer of a different size]'
  '-Wpoison-system-directories[Warn for -I and -L options using system directories if cross compiling]'
  '-Wpragmas[Warn about misuses of pragmas]'
  '-Wproperty-assign-default[Warn if a property for an Objective-C object has no assign semantics specified]'
  '-Wprotocol[Warn if inherited methods are unimplemented]'
  '-Wreal-q-constant[Warn about real-literal-constants with '\'q\'' exponent-letter]'
  '-Wrealloc-lhs-all[Warn when a left-hand-side variable is reallocated]'
  '-Wrealloc-lhs[Warn when a left-hand-side array variable is reallocated]'
  '-Wredundant-decls[Warn about multiple declarations of the same object]'
  '-Wregister[Warn about uses of register storage specifier]'
  '-Wreorder[Warn when the compiler reorders code]'
  '-Wrestrict[Warn when an argument passed to a restrict- qualified parameter aliases with another argument]'
  '-Wreturn-local-addr[Warn about returning a pointer/reference to a local or temporary variable]'
  '-Wreturn-type[Warn whenever a function'\''s return type defaults to "int" (C), or about inconsistent return types (C++)]'
  '-Wscalar-storage-order[Warn on suspicious constructs involving reverse scalar storage order]'
  '-Wselector[Warn if a selector has multiple methods]'
  '-Wsequence-point[Warn about possible violations of sequence point rules]'
  '-Wshadow-ivar[Warn if a local declaration hides an instance variable]'
  '-Wshadow[Warn when one variable shadows another.  Same as  -Wshadow=global]'
  '-Wshift-count-negative[Warn if shift count is negative]'
  '-Wshift-count-overflow[Warn if shift count >= width of type]'
  '-Wshift-negative-value[Warn if left shifting a negative value]'
  '-Wshift-overflow[Warn if left shift of a signed value overflows.  Same as -Wshift-overflow=]'
  '-Wsign-compare[Warn about signed-unsigned comparisons]'
  '-Wsign-conversion[Warn for implicit type conversions between signed and unsigned integers]'
  '-Wsign-promo[Warn when overload promotes from unsigned to signed]'
  '-Wsized-deallocation[Warn about missing sized deallocation functions]'
  '-Wsizeof-array-argument[Warn when sizeof is applied on a parameter declared as an array]'
  '-Wsizeof-pointer-memaccess[Warn about suspicious length parameters to certain string functions if the argument uses sizeof]'
  '-Wstack-protector[Warn when not issuing stack smashing protection for some reason]'
  '-Wstrict-aliasing[Warn about code which might break strict aliasing rules]'
  '-Wstrict-null-sentinel[Warn about uncasted NULL used as sentinel]'
  '-Wstrict-overflow[Warn about optimizations that assume that signed overflow is undefined]'
  '-Wstrict-prototypes[Warn about unprototyped function declarations]'
  '-Wstrict-selector-match[Warn if type signatures of candidate methods do not match exactly]'
  '-Wstringop-overflow[Warn about buffer overflow in string manipulation functions like memcpy and strcpy.  Same as  -Wstringop-overflow=]'
  '-Wsubobject-linkage[Warn if a class type has a base or a field whose type uses the anonymous namespace or depends on a type with no linkage]'
  '-Wsuggest-attribute=-[Warn about functions which might be candidates for __attribute__((const))]:const:(pure const noreturn format)'
  '-Wsuggest-final-methods[Warn about C++ virtual methods where adding final keyword would improve code quality]'
  '-Wsuggest-final-types[Warn about C++ polymorphic types where adding final keyword would improve code quality]'
  '-Wsuggest-override[Suggest that the override keyword be used when the declaration of a virtual function overrides another]'
  '-Wsurprising[Warn about "suspicious" constructs]'
  '-Wswitch-bool[Warn about switches with boolean controlling expression]'
  '-Wswitch-default[Warn about enumerated switches missing a "default-" statement]'
  '-Wswitch-enum[Warn about all enumerated switches missing a specific case]'
  '-Wswitch-unreachable[Warn about statements between switch'\''s controlling expression and the first case]'
  '-Wswitch[Warn about enumerated switches, with no default, missing a case]'
  '-Wsync-nand[Warn when __sync_fetch_and_nand and __sync_nand_and_fetch built-in functions are used]'
  '-Wsynth[Deprecated. This switch has no effect]'
  '-Wsystem-headers[Do not suppress warnings from system headers]'
  '-Wtabs[Permit nonconforming uses of the tab character]'
  '-Wtarget-lifetime[Warn if the pointer in a pointer assignment might outlive its target]'
  '-Wtautological-compare[Warn if a comparison always evaluates to true or false]'
  '-Wtemplates[Warn on primary template declaration]'
  '-Wterminate[Warn if a throw expression will always result in a call to terminate()]'
  '-Wtraditional-conversion[Warn of prototypes causing type conversions different from what would happen in the absence of prototype]'
  '-Wtraditional[Warn about features not present in traditional C]'
  '-Wtrampolines[Warn whenever a trampoline is generated]'
  '-Wtrigraphs[Warn if trigraphs are encountered that might affect the meaning of the program]'
  '-Wtype-limits[Warn if a comparison is always true or always false due to the limited range of the data type]'
  '-Wundeclared-selector[Warn about @selector()s without previously declared methods]'
  '-Wundef[Warn if an undefined macro is used in an #if directive]'
  '-Wundefined-do-loop[Warn about an invalid DO loop]'
  '-Wunderflow[Warn about underflow of numerical constant expressions]'
  '-Wuninitialized[Warn about uninitialized automatic variables]'
  '-Wunknown-pragmas[Warn about unrecognized pragmas]'
  '-Wunreachable-code[Does nothing. Preserved for backward compatibility]'
  '-Wunsafe-loop-optimizations[Warn if the loop cannot be optimized due to nontrivial assumptions]'
  '-Wunsuffixed-float-constants[Warn about unsuffixed float constants]'
  '-Wunused-but-set-parameter[Warn when a function parameter is only set, otherwise unused]'
  '-Wunused-but-set-variable[Warn when a variable is only set, otherwise unused]'
  '-Wunused-const-variable[Warn when a const variable is unused.  Same as  -Wunused-const-variable=]'
  '-Wunused-dummy-argument[Warn about unused dummy arguments]'
  '-Wunused-function[Warn when a function is unused]'
  '-Wunused-label[Warn when a label is unused]'
  '-Wunused-local-typedefs[Warn when typedefs locally defined in a function are not used]'
  '-Wunused-macros[Warn about macros defined in the main file that are not used]'
  '-Wunused-parameter[Warn when a function parameter is unused]'
  '-Wunused-result[Warn if a caller of a function, marked with attribute warn_unused_result, does not use its return value]'
  '-Wunused-value[Warn when an expression value is unused]'
  '-Wunused-variable[Warn when a variable is unused]'
  '-Wunused[Enable all -Wunused- warnings]'
  '-Wuse-without-only[Warn about USE statements that have no ONLY qualifier]'
  '-Wuseless-cast[Warn about useless casts]'
  '-Wvarargs[Warn about questionable usage of the macros used to retrieve variable arguments]'
  '-Wvariadic-macros[Warn about using variadic macros]'
  '-Wvector-operation-performance[Warn when a vector operation is compiled outside the SIMD]'
  '-Wvirtual-inheritance[Warn on direct virtual inheritance]'
  '-Wvirtual-move-assign[Warn if a virtual base has a non-trivial move assignment operator]'
  '-Wvla[Warn if a variable length array is used]'
  '-Wvolatile-register-var[Warn when a register variable is declared volatile]'
  '-Wwrite-strings[In C++, nonzero means warn about deprecated conversion from string literals to '\''char *'\''.  In C, similar warning, except that the conversion is]'
  '-Wzero-as-null-pointer-constant[Warn when a literal '\''0'\'' is used as null pointer]'
  '-Wzerotrip[Warn about zero-trip DO loops]'
  '-frequire-return-statement[Functions which return values must end with return statements]'
# --help=warnings,joined
  '-Wabi=[Warn about things that change between the current  -fabi-version and the specified version]:: '
  '-Waligned-new=[Warn even if '\'new\'' uses a class member allocation function]:none|global|all: '
  '-Walloc-size-larger-than=[Warn for calls to allocation functions that attempt to allocate objects larger than the specified number of bytes]:bytes: '
  '-Walloca-larger-than=[Warn on unbounded uses of alloca, and on bounded uses of alloca whose bound can be larger than <number> bytes]:bytes: '
  '-Warray-bounds=[Warn if an array is accessed out of bounds]:level:(1 2)'
  '-Wformat-overflow=[Warn about function calls with format strings that write past the end of the destination region]:level:(1 2)'
  '-Wformat-truncation=[Warn about calls to snprintf and similar functions that truncate output]:level:(1 2)'
  '-Wformat=[Warn about printf/scanf/strftime/strfmon format string anomalies]:level:(1 2)'
  '-Wframe-larger-than=[Warn if a function'\''s stack frame requires more than <number> bytes]:bytes: '
  '-Wimplicit-fallthrough=[Warn when a switch case falls through]:level:(1 2 3 4 5)'
  '-Wlarger-than=[Warn if an object is larger than <number> bytes]:bytes: '
  '-Wnormalized=-[Warn about non-normalised Unicode strings]:normalization:((id\:allow\ some\ non-nfc\ characters\ that\ are\ valid\ identifiers nfc\:only\ allow\ NFC nfkc\:only\ allow\ NFKC none\:allow\ any\ normalization)): '
  '-Wplacement-new=[Warn for placement new expressions with undefined behavior]:level:(1 2)'
  '-Wshift-overflow=[Warn if left shift of a signed value overflows]:level:(1 2)'
  '-Wstack-usage=[Warn if stack usage might be larger than specified amount]:bytes: '
  '-Wstrict-aliasing=-[Warn about code which might break strict aliasing rules]:level of checking (higher is more accurate):(1 2 3)'
  '-Wstrict-overflow=-[Warn about optimizations that assume that signed overflow is undefined]:level of checking (higher finds more cases):(1 2 3 4 5)'
  '-Wstringop-overflow=[Under the control of Object Size type, warn about buffer overflow in string manipulation functions like memcpy and strcpy]:level:(1 2 3 4)'
  '-Wunused-const-variable=[Warn when a const variable is unused]:level:(1 2)'
  '-Wvla-larger-than=[Warn on unbounded uses of variable-length arrays, and on bounded uses of variable-length arrays whose bound can be larger than <number> bytes]:bytes: ' 
# -W options from --help=common,^warnings
  '-Werror=-[Treat specified warning as error (or all if none specified)]::warning:->werror'
  '-Wfatal-errors[Exit on the first error occurred]'
)
# optimizers (from --help=optimizers), except for -O
args+=(
# --help=optimizers,^joined
  '-faggressive-loop-optimizations[Aggressively optimize loops using language constraints]'
  '-falign-functions[Align the start of functions]'
  '-falign-jumps[Align labels which are only reached by jumping]'
  '-falign-labels[Align all labels]'
  '-falign-loops[Align the start of loops]'
  '-fassociative-math[Allow optimization for floating-point arithmetic which may change the result of the operation due to rounding]'
  '-fasynchronous-unwind-tables[Generate unwind tables that are exact at each instruction boundary]'
  '-fauto-inc-dec[Generate auto-inc/dec instructions]'
  '-fbranch-count-reg[Replace add, compare, branch with branch on count register]'
  '-fbranch-probabilities[Use profiling information for branch probabilities]'
  '-fbranch-target-load-optimize2[Perform branch target load optimization after prologue / epilogue threading]'
  '-fbranch-target-load-optimize[Perform branch target load optimization before prologue / epilogue threading]'
  '-fbtr-bb-exclusive[Restrict target load migration not to re-use registers in any basic block]'
  '-fcaller-saves[Save registers around function calls]'
  '-fcode-hoisting[Enable code hoisting]'
  '-fcombine-stack-adjustments[Looks for opportunities to reduce stack adjustments and stack references]'
  '-fcommon[Do not put uninitialized globals in the common section]'
  '-fcompare-elim[Perform comparison elimination after register allocation has finished]'
  '-fconserve-stack[Do not perform optimizations increasing noticeably stack usage]'
  '-fcprop-registers[Perform a register copy-propagation optimization pass]'
  '-fcrossjumping[Perform cross-jumping optimization]'
  '-fcse-follow-jumps[When running CSE, follow jumps to their targets]'
  '-fcx-fortran-rules[Complex multiplication and division follow Fortran rules]'
  '-fcx-limited-range[Omit range reduction step when performing complex division]'
  '-fdata-sections[Place data items into their own section]'
  '-fdce[Use the RTL dead code elimination pass]'
  '-fdefer-pop[Defer popping functions args from stack until later]'
  '-fdelayed-branch[Attempt to fill delay slots of branch instructions]'
  '-fdelete-dead-exceptions[Delete dead instructions that may throw exceptions]'
  '-fdelete-null-pointer-checks[Delete useless null pointer checks]'
  '-fdevirtualize-speculatively[Perform speculative devirtualization]'
  '-fdevirtualize[Try to convert virtual calls to direct ones]'
  '-fdse[Use the RTL dead store elimination pass]'
  '-fearly-inlining[Perform early inlining]'
  '-fexceptions[Enable exception handling]'
  '-fexpensive-optimizations[Perform a number of minor, expensive optimizations]'
  '-ffinite-math-only[Assume no NaNs or infinities are generated]'
  '-ffloat-store[Don'\''t allocate floats and doubles in extended- precision registers]'
  '-fforward-propagate[Perform a forward propagation pass on RTL]'
  '-ffp-int-builtin-inexact[Allow built-in functions ceil, floor, round, trunc to raise "inexact" exceptions]'
  '-ffunction-cse[Allow function addresses to be held in registers]'
  '-fgcse-after-reload[Perform global common subexpression elimination after register allocation has finished]'
  '-fgcse-las[Perform redundant load after store elimination in global common subexpression elimination]'
  '-fgcse-lm[Perform enhanced load motion during global common subexpression elimination]'
  '-fgcse-sm[Perform store motion after global common subexpression elimination]'
  '-fgcse[Perform global common subexpression elimination]'
  '-fgraphite-identity[Enable Graphite Identity transformation]'
  '-fgraphite[Enable in and out of Graphite representation]'
  '-fguess-branch-probability[Enable guessing of branch probabilities]'
  '-fhoist-adjacent-loads[Enable hoisting adjacent loads to encourage generating conditional move instructions]'
  '-fif-conversion2[Perform conversion of conditional jumps to conditional execution]'
  '-fif-conversion[Perform conversion of conditional jumps to branchless equivalents]'
  '-findirect-inlining[Perform indirect inlining]'
  '-finline-atomics[Inline __atomic operations when a lock free instruction sequence is available]'
  '-finline-functions-called-once[Integrate functions only required by their single caller]'
  '-finline-functions[Integrate functions not declared "inline" into their callers when profitable]'
  '-finline-small-functions[Integrate functions into their callers when code size is known not to grow]'
  '-finline[Enable inlining of function declared "inline", disabling disables all inlining]'
  '-fipa-bit-cp[Perform interprocedural bitwise constant propagation]'
  '-fipa-cp-clone[Perform cloning to make Interprocedural constant propagation stronger]'
  '-fipa-cp[Perform interprocedural constant propagation]'
  '-fipa-icf-functions[Perform Identical Code Folding for functions]'
  '-fipa-icf-variables[Perform Identical Code Folding for variables]'
  '-fipa-icf[Perform Identical Code Folding for functions and read-only variables]'
  '-fipa-profile[Perform interprocedural profile propagation]'
  '-fipa-pta[Perform interprocedural points-to analysis]'
  '-fipa-pure-const[Discover pure and const functions]'
  '-fipa-ra[Use caller save register across calls if possible]'
  '-fipa-reference[Discover readonly and non addressable static variables]'
  '-fipa-sra[Perform interprocedural reduction of aggregates]'
  '-fipa-vrp[Perform IPA Value Range Propagation]'
  '-fira-hoist-pressure[Use IRA based register pressure calculation in RTL hoist optimizations]'
  '-fira-loop-pressure[Use IRA based register pressure calculation in RTL loop optimizations]'
  '-fira-share-save-slots[Share slots for saving different hard registers]'
  '-fira-share-spill-slots[Share stack slots for spilled pseudo-registers]'
  '-fisolate-erroneous-paths-attribute[Detect paths that trigger erroneous or undefined behavior due to a null value being used in a way forbidden by a returns_nonnull or]'
  '-fisolate-erroneous-paths-dereference[Detect paths that trigger erroneous or undefined behavior due to dereferencing a null pointer.  Isolate those paths from the main]'
  '-fivopts[Optimize induction variables on trees]'
  '-fjump-tables[Use jump tables for sufficiently large switch statements]'
  '-flifetime-dse[Tell DSE that the storage for a C++ object is dead when the constructor starts and when the destructor finishes]'
  '-flive-range-shrinkage[Relief of register pressure through live range shrinkage]'
  '-floop-nest-optimize[Enable the loop nest optimizer]'
  '-floop-parallelize-all[Mark all loops as parallel]'
  '-flra-remat[Do CFG-sensitive rematerialization in LRA]'
  '-fmath-errno[Set errno after built-in math functions]'
  '-fmerge-all-constants[Attempt to merge identical constants and constant variables]'
  '-fmerge-constants[Attempt to merge identical constants across compilation units]'
  '-fmodulo-sched-allow-regmoves[Perform SMS based modulo scheduling with register moves allowed]'
  '-fmodulo-sched[Perform SMS based modulo scheduling before the first scheduling pass]'
  '-fmove-loop-invariants[Move loop invariant computations out of loops]'
  '-fno-threadsafe-statics[Do not generate thread-safe code for initializing local statics]'
  '-fnon-call-exceptions[Support synchronous non-call exceptions]'
  '-fnothrow-opt[Treat a throw() exception specification as noexcept to improve code size]'
  '-fomit-frame-pointer[When possible do not generate stack frames]'
  '-fopt-info[Enable all optimization info dumps on stderr]'
  '-foptimize-sibling-calls[Optimize sibling and tail recursive calls]'
  '-foptimize-strlen[Enable string length optimizations on trees]'
  '-fpack-struct[Pack structure members together without holes]'
  '-fpartial-inlining[Perform partial inlining]'
  '-fpeel-loops[Perform loop peeling]'
  '-fpeephole2[Enable an RTL peephole pass before sched2]'
  '-fpeephole[Enable machine specific peephole optimizations]'
  '-fplt[Use PLT for PIC calls (-fno-plt- load the address from GOT at call site)]'
  '-fpredictive-commoning[Run predictive commoning optimization]'
  '-fprefetch-loop-arrays[Generate prefetch instructions, if available, for arrays in loops]'
  '-fprintf-return-value[Treat known sprintf return values as constants]'
  '-freciprocal-math[Same as -fassociative-math for expressions which include division]'
  '-freg-struct-return[Return small aggregates in registers]'
  '-frename-registers[Perform a register renaming optimization pass]'
  '-freorder-blocks-and-partition[Reorder basic blocks and partition into hot and cold sections]'
  '-freorder-blocks[Reorder basic blocks to improve code placement]'
  '-freorder-functions[Reorder functions to improve code placement]'
  '-frerun-cse-after-loop[Add a common subexpression elimination pass after loop optimizations]'
  '-freschedule-modulo-scheduled-loops[Enable/Disable the traditional scheduling in loops that already passed modulo scheduling]'
  '-frounding-math[Disable optimizations that assume default FP rounding behavior]'
  '-frtti[Generate run time type descriptor information]'
  '-fsched-critical-path-heuristic[Enable the critical path heuristic in the scheduler]'
  '-fsched-dep-count-heuristic[Enable the dependent count heuristic in the scheduler]'
  '-fsched-group-heuristic[Enable the group heuristic in the scheduler]'
  '-fsched-interblock[Enable scheduling across basic blocks]'
  '-fsched-last-insn-heuristic[Enable the last instruction heuristic in the scheduler]'
  '-fsched-pressure[Enable register pressure sensitive insn scheduling]'
  '-fsched-rank-heuristic[Enable the rank heuristic in the scheduler]'
  '-fsched-spec-insn-heuristic[Enable the speculative instruction heuristic in the scheduler]'
  '-fsched-spec-load-dangerous[Allow speculative motion of more loads]'
  '-fsched-spec-load[Allow speculative motion of some loads]'
  '-fsched-spec[Allow speculative motion of non-loads]'
  '-fsched-stalled-insns-dep[Set dependence distance checking in premature scheduling of queued insns]'
  '-fsched-stalled-insns[Allow premature scheduling of queued insns]'
  '-fsched2-use-superblocks[If scheduling post reload, do superblock scheduling]'
  '-fschedule-fusion[Perform a target dependent instruction fusion optimization pass]'
  '-fschedule-insns2[Reschedule instructions after register allocation]'
  '-fschedule-insns[Reschedule instructions before register allocation]'
  '-fsection-anchors[Access data in the same section from shared anchor points]'
  '-fsel-sched-pipelining-outer-loops[Perform software pipelining of outer loops during selective scheduling]'
  '-fsel-sched-pipelining[Perform software pipelining of inner loops during selective scheduling]'
  '-fsel-sched-reschedule-pipelined[Reschedule pipelined regions without pipelining]'
  '-fselective-scheduling2[Run selective scheduling after reload]'
  '-fselective-scheduling[Schedule instructions using selective scheduling algorithm]'
  '-fshort-enums[Use the narrowest integer type possible for enumeration types]'
  '-fshort-wchar[Force the underlying type for "wchar_t" to be "unsigned short"]'
  '-fshrink-wrap-separate[Shrink-wrap parts of the prologue and epilogue separately]'
  '-fshrink-wrap[Emit function prologues only before parts of the function that need it, rather than at the top of the function]'
  '-fsignaling-nans[Disable optimizations observable by IEEE signaling NaNs]'
  '-fsigned-zeros[Disable floating point optimizations that ignore the IEEE signedness of zero]'
  '-fsingle-precision-constant[Convert floating point constants to single precision constants]'
  '-fsplit-ivs-in-unroller[Split lifetimes of induction variables when loops are unrolled]'
  '-fsplit-loops[Perform loop splitting]'
  '-fsplit-paths[Split paths leading to loop backedges]'
  '-fsplit-wide-types[Split wide types into independent registers]'
  '-fssa-backprop[Enable backward propagation of use properties at the SSA level]'
  '-fssa-phiopt[Optimize conditional patterns using SSA PHI nodes]'
  '-fstack-protector-all[Use a stack protection method for every function]'
  '-fstack-protector-explicit[Use stack protection method only for functions with the stack_protect attribute]'
  '-fstack-protector-strong[Use a smart stack protection method for certain functions]'
  '-fstack-protector[Use propolice as a stack protection method]'
  '-fstdarg-opt[Optimize amount of stdarg registers saved to stack at start of function]'
  '-fstore-merging[Merge adjacent stores]'
  '-fstrict-aliasing[Assume strict aliasing rules apply]'
  '-fstrict-enums[Assume that values of enumeration type are always within the minimum range of that type]'
  '-fstrict-overflow[Treat signed overflow as undefined]'
  '-fstrict-volatile-bitfields[Force bitfield accesses to match their type width]'
  '-fthread-jumps[Perform jump threading optimizations]'
  '-ftracer[Perform superblock formation via tail duplication]'
  '-ftrapping-math[Assume floating-point operations can trap]'
  '-ftrapv[Trap for signed overflow in addition, subtraction and multiplication]'
  '-ftree-bit-ccp[Enable SSA-BIT-CCP optimization on trees]'
  '-ftree-builtin-call-dce[Enable conditional dead code elimination for builtin calls]'
  '-ftree-ccp[Enable SSA-CCP optimization on trees]'
  '-ftree-ch[Enable loop header copying on trees]'
  '-ftree-coalesce-vars[Enable SSA coalescing of user variables]'
  '-ftree-copy-prop[Enable copy propagation on trees]'
  '-ftree-cselim[Transform condition stores into unconditional ones]'
  '-ftree-dce[Enable SSA dead code elimination optimization on trees]'
  '-ftree-dominator-opts[Enable dominator optimizations]'
  '-ftree-dse[Enable dead store elimination]'
  '-ftree-forwprop[Enable forward propagation on trees]'
  '-ftree-fre[Enable Full Redundancy Elimination (FRE) on trees]'
  '-ftree-loop-distribute-patterns[Enable loop distribution for patterns transformed into a library call]'
  '-ftree-loop-distribution[Enable loop distribution on trees]'
  '-ftree-loop-if-convert[Convert conditional jumps in innermost loops to branchless equivalents]'
  '-ftree-loop-im[Enable loop invariant motion on trees]'
  '-ftree-loop-ivcanon[Create canonical induction variables in loops]'
  '-ftree-loop-optimize[Enable loop optimizations on tree level]'
  '-ftree-loop-vectorize[Enable loop vectorization on trees]'
  '-ftree-lrs[Perform live range splitting during the SSA- >normal pass]'
  '-ftree-partial-pre[In SSA-PRE optimization on trees, enable partial- partial redundancy elimination]'
  '-ftree-phiprop[Enable hoisting loads from conditional pointers]'
  '-ftree-pre[Enable SSA-PRE optimization on trees]'
  '-ftree-pta[Perform function-local points-to analysis on trees]'
  '-ftree-reassoc[Enable reassociation on tree level]'
  '-ftree-scev-cprop[Enable copy propagation of scalar-evolution information]'
  '-ftree-sink[Enable SSA code sinking on trees]'
  '-ftree-slp-vectorize[Enable basic block vectorization (SLP) on trees]'
  '-ftree-slsr[Perform straight-line strength reduction]'
  '-ftree-sra[Perform scalar replacement of aggregates]'
  '-ftree-switch-conversion[Perform conversions of switch initializations]'
  '-ftree-tail-merge[Enable tail merging on trees]'
  '-ftree-ter[Replace temporary expressions in the SSA->normal pass]'
  '-ftree-vectorize[Enable vectorization on trees]'
  '-ftree-vrp[Perform Value Range Propagation on trees]'
  '-funconstrained-commons[Assume common declarations may be overridden with ones with a larger trailing array]'
  '-funroll-all-loops[Perform loop unrolling for all loops]'
  '-funroll-loops[Perform loop unrolling when iteration count is known]'
  '-funsafe-loop-optimizations[Allow loop optimizations to assume that the loops behave in normal way]'
  '-funsafe-math-optimizations[Allow math optimizations that may violate IEEE or ISO standards]'
  '-funswitch-loops[Perform loop unswitching]'
  '-funwind-tables[Just generate unwind tables for exception handling]'
  '-fvar-tracking-assignments-toggle[Toggle -fvar-tracking-assignments]'
  '-fvar-tracking-assignments[Perform variable tracking by annotating assignments]'
  '-fvar-tracking-uninit[Perform variable tracking and also tag variables that are uninitialized]'
  '-fvar-tracking[Perform variable tracking]'
  '-fvariable-expansion-in-unroller[Apply variable expansion when loops are unrolled]'
  '-fvpt[Use expression value profiles in optimizations]'
  '-fweb[Construct webs and split unrelated uses of single variable]'
  '-fwhole-program[Perform whole program optimizations]'
  '-fwrapv[Assume signed arithmetic overflow wraps around]'
# --help=optimizers,joined
  '-ffp-contract=[Perform floating-point expression contraction]:style:(off on fast)'
  '-fira-algorithm=[Set the used IRA algorithm]:algorithm:(cb priority)'
  '-fira-region=[Set regions for IRA]:region:(one all mixed)'
  '-fpack-struct=[Set initial maximum structure member alignment]:alignment (power of 2): '
  '-freorder-blocks-algorithm=[Set the used basic block reordering algorithm]:algorithm:(simple stc)'
  '-fsched-stalled-insns-dep=[Set dependence distance checking in premature scheduling of queued insns]:insns:'
  '-fsched-stalled-insns=[Set number of queued insns that can be prematurely scheduled]:insns:'
  '-fsimd-cost-model=[Specifies the vectorization cost model for code marked with a simd directive]:model:(unlimited dynamic cheap)'
  '-fstack-reuse=[Set stack reuse level for local variables]:level:(all named_vars none)'
  '-ftree-parallelize-loops=[Enable automatic parallelization of loops]'
  '-fvect-cost-model=[Specifies the cost model for vectorization]:model:(unlimited dynamic cheap)'

)

# More linker options, from gcc man pages
args+=(
  '-nostartfiles[Do not use the standard system startup files when linking]'
  '-nodefaultlibs[Do not use the standard system libraries when linking]'
  '-nostdlib[Do not use the standard system startup files or libraries when linking]'
  '-rdynamic[Pass the flag -export-dynamic to the ELF linker, on targets that support it]'
  '-s[Remove all symbol table and relocation information from the executable]'
  '-static[On systems that support dynamic linking, this prevents linking with the shared libraries]'
  '-shared-libgcc[Force shared libgcc]'
  '-static-libgcc[Force static libgcc]'
  '-symbolic[Bind references to global symbols when building a shared object]'
  '-T:linker script:_files'
)

# other common options, gcc --help=warnings --help=optimizers --help=common|sed 1,/language-independent/d
args+=(
# | grep -v ::
  '--help[Display this information]'
  '--no-warnings[Same as -w]'
  '--optimize[Same as -O]'
  '--output[Same as -o]'
  '--param[Set parameter <param> to value.  See manpage for a complete list of parameters]:name=value'
  '--verbose[Same as -v]'
  '--version[Display version information]'
  '-aux-info[Emit declaration information into <file>]:file:_files'
  '-dumpbase[Set the file basename to be used for dumps]:file:_files'
  '-dumpdir[Set the directory name to be used for dumps]:file:_files -/'
  '-fPIC[Generate position-independent code if possible (large mode)]'
  '-fPIE[Generate position-independent code for executables if possible (large mode)]'
  '-fassociative-math[Allow optimization for floating-point arithmetic which may change the result of the operation due to rounding]'
  '-fauto-inc-dec[Generate auto-inc/dec instructions]'
  '-fbounds-check[Generate code to check bounds before indexing arrays]'
  '-fcall-saved--[Mark <register> as being preserved across functions]:register'
  '-fcall-used--[Mark <register> as being corrupted by function calls]:register'
  '-fcheck-data-deps[Compare the results of several data dependence analyzers]'
  '-fcompare-debug-second[Run only the second compilation of -fcompare-debug]'
  '-fcompare-debug=-[Compile with and without e.g. -gtoggle, and compare the final-insns dump]:opts:' #TODO: complete gcc options here
  '-fdbg-cnt-list[List all available debugging counters with their limits and counts]'
  '-fdbg-cnt=-[,<counter>-<limit>,...) Set the debug counter limit]:counter\:limit,...: ' #TODO: gcc -fdbg-cnt-list -x c /dev/null -o /dev/null -c
  '-fdebug-types-section[Output .debug_types section when using DWARF v4 debuginfo]'
  '-fdelete-dead-exceptions[Delete dead instructions that may throw exceptions]'
  '-fdiagnostics-color=-[Colorize diagnostics]::color:(never always auto)'
  '-fdiagnostics-generate-patch[Print fix-it hints to stderr in unified diff format]'
  '-fdiagnostics-parseable-fixits[Print fixit hints in machine-readable form]'
  '-fdiagnostics-show-caret[Show the source line with a caret indicating the column]'
  '-fdiagnostics-show-location=-[How often to emit source location at the beginning of line-wrapped diagnostics]:source location:(once every-line)'
  '-fdiagnostics-show-option[Amend appropriate diagnostic messages with the command line option that controls them]'
  #not meant for end users
  #'-fdisable--pass=-[disables an optimization pass]:range1+range2: '
  #'-fdisable-[disables an optimization pass]'
  #'-fenable--pass=-[enables an optimization pass]:range1+range2: '
  #'-fenable-[enables an optimization pass]'
  #'-fdump-<type>[Dump various compiler internals to a file]'
  '-fdump-final-insns=-[Dump to filename the insns at the end of translation]:filename:_files'
  '-fdump-go-spec=-[Write all declarations to file as Go code]:filename:_files'
  '-fdump-noaddr[Suppress output of addresses in debugging dumps]'
  '-fdump-passes[Dump optimization passes]'
  '-fdump-unnumbered-links[Suppress output of previous and next insn numbers in debugging dumps]'
  '-fdump-unnumbered[Suppress output of instruction numbers, line number notes and addresses in debugging dumps]'
  '-fdwarf2-cfi-asm[Enable CFI tables via GAS assembler directives]'
  '-feliminate-dwarf2-dups[Perform DWARF2 duplicate elimination]'
  '-feliminate-unused-debug-symbols[Perform unused type elimination in debug info]'
  '-feliminate-unused-debug-types[Perform unused type elimination in debug info]'
  '-femit-class-debug-always[Do not suppress C++ class debug information]'
  '-fexcess-precision=-[Specify handling of excess floating-point precision]:precision handling:(fast standard)'
  '-ffast-math[Sets -fno-math-errno, -funsafe-math-optimizations, -ffinite-math-only, -fno-rounding-math, -fno-signaling-nans and -fcx-limited-range]'
  '-ffat-lto-objects[Output lto objects containing both the intermediate language and binary output]'
  '-ffixed--[Mark <register> as being unavailable to the compiler]:register'
  '-ffunction-cse[Allow function addresses to be held in registers]'
  '-ffunction-sections[Place each function into its own section]'
  '-fgnu-tm[Enable support for GNU transactional memory]'
  '-fgraphite[Enable in and out of Graphite representation]'
  '-fident[Process #ident directives]'
  '-findirect-inlining[Perform indirect inlining]'
  '-finhibit-size-directive[Do not generate .size directives]'
  '-finline-limit=-[Limit the size of inlined functions to <number>]:number: '
  '-finstrument-functions[Instrument function entry and exit with profiling calls]'
  '-fira-loop-pressure[Use IRA based register pressure calculation in RTL loop optimizations]'
  '-fira-share-save-slots[Share slots for saving different hard registers]'
  '-fira-share-spill-slots[Share stack slots for spilled pseudo-registers]'
  '-fira-verbose=-[Control IRA'\''s level of diagnostic messages]:verbosity: '
  '-fkeep-inline-functions[Generate code for functions even if they are fully inlined]'
  '-fkeep-static-consts[Emit static const variables even if they are not used]'
  '-fleading-underscore[Give external symbols a leading underscore]'
  '-flto-compression-level=-[Use specified zlib compression level for IL]:compression level: '
  '-flto-odr-type-merging[Merge C++ types using One Definition Rule]'
  '-flto-partition=-[Partition symbols and vars at linktime based on object files they originate from]:partitioning algorithm:(1to1 balanced max one none)'
  '-flto-report[Report various link-time optimization statistics]'
  '-flto=-[Enable link-time optimization]::jobs:'
  '-fmax-errors=-[Maximum number of errors to report]:errors: '
  '-fmem-report-wpa[Report on permanent memory allocation in WPA only]'
  '-fmem-report[Report on permanent memory allocation]'
  '-fmerge-debug-strings[Attempt to merge identical debug strings across compilation units]'
  '-fmessage-length=-[Limit diagnostics to <number> characters per line.  0 suppresses line-wrapping]:length: '
  '-fmodulo-sched-allow-regmoves[Perform SMS based modulo scheduling with register moves allowed]'
  '-fopt-info-type=-[Dump compiler optimization details]:filename:_files'
  '-fopt-info[Dump compiler optimization details]'
  '-fpartial-inlining[Perform partial inlining]'
  '-fpcc-struct-return[Return small aggregates in memory, not registers]'
  '-fpic[Generate position-independent code if possible (small mode)]'
  '-fpie[Generate position-independent code for executables if possible (small mode)]'
  '-fplugin-arg--[Specify argument <key>=<value> for plugin <name>]:-fplugin-arg-name-key=value: ' #TODO
  '-fpost-ipa-mem-report[Report on memory allocation before interprocedural optimization]'
  '-fpre-ipa-mem-report[Report on memory allocation before interprocedural optimization]'
  '-fprofile-arcs[Insert arc-based program profiling code]'
  '-fprofile-correction[Enable correction of flow inconsistent profile data input]'
  '-fprofile-generate[Enable common options for generating profile info for profile feedback directed optimizations]'
  '-fprofile-report[Report on consistency of profile]'
  '-fprofile-use[Enable common options for performing profile feedback directed optimizations]'
  '-fprofile-values[Insert code to profile values of expressions]'
  '-fprofile[Enable basic program profiling code]'
  '-frandom-seed=-[Use <string> as random seed]:seed: '
  '-freciprocal-math[Same as -fassociative-math for expressions which include division]'
  '-frecord-gcc-switches[Record gcc command line switches in the object file]'
  '-free[Turn on Redundant Extensions Elimination pass]'
  '-fsanitize=-[Enable AddressSanitizer, a memory error detector]:style:(address thread)'
  '-fsched-stalled-insns-dep=-[Set dependence distance checking in premature scheduling of queued insns]:instructions: '
  '-fsched-stalled-insns=-[Set number of queued insns that can be prematurely scheduled]:instructions: '
  '-fsched-verbose=-[Set the verbosity level of the scheduler]:verbosity: '
  '-fshow-column[Show column numbers in diagnostics, when available]'
  '-fsplit-stack[Generate discontiguous stack frames]'
  '-fstack-check=-[Insert stack checking code into the program.  -fstack-check=specific if to argument given]:type:(none generic specific)'
  '-fstack-limit-register=-[Trap if the stack goes past <register>]:register: '
  '-fstack-limit-symbol=-[Trap if the stack goes past symbol <name>]:name: '
  '-fno-stack-limit'
  '-fstack-protector-all[Use a stack protection method for every function]'
  '-fstack-protector[Use propolice as a stack protection method]'
  '-fstack-usage[Output stack usage information on a per-function basis]'
  '-fstrict-overflow[Treat signed overflow as undefined]'
  '-fstrict-volatile-bitfields[Force bitfield accesses to match their type width]'
  '-fsync-libcalls[Implement __atomic operations via libcalls to legacy __sync functions]'
  '-fsyntax-only[Check for syntax errors, then stop]'
  '-ftest-coverage[Create data files needed by "gcov"]'
  '-ftime-report[Report the time taken by each compiler pass]'
  '-ftls-model=-[Set the default thread-local storage code generation model]:TLS model:(global-dynamic local-dynamic initial-exec local-exec)'
  '-ftracer[Perform superblock formation via tail duplication]'
  '-ftree-loop-linear[Enable loop interchange transforms.  Same as  -floop-interchange]'
  '-fuse-ld=-[Use the specified linker instead of the default linker]:linker:(bfd gold)'
  '-fuse-linker-plugin[Use linker plugin during link-time optimization]'
  '-fverbose-asm[Add extra commentary to assembler output]'
  '-fvisibility=-[Set the default symbol visibility]:visibility:(default internal hidden protected)'
  '-fzero-initialized-in-bss[Put zero initialized data in the bss section]'
  '-gno-pubnames[Don'\''t generate DWARF pubnames and pubtypes sections]'
  '-gno-record-gcc-switches[Don'\''t record gcc command line switches in DWARF DW_AT_producer]'
  '-gno-split-dwarf[Don'\''t generate debug information in separate .dwo files]'
  '-gno-strict-dwarf[Emit DWARF additions beyond selected version]'
  '-gpubnames[Generate DWARF pubnames and pubtypes sections]'
  '-grecord-gcc-switches[Record gcc command line switches in DWARF DW_AT_producer]'
  '-gsplit-dwarf[Generate debug information in separate .dwo files]'
  '-gstrict-dwarf[Don'\''t emit DWARF additions beyond selected version]'
  '-gtoggle[Toggle debug information generation]'
  '-gvms[Generate debug information in VMS format]'
  '-imultiarch[Set <dir> to be the multiarch include subdirectory]:directory:_files -/' #XXX not in manpage
  '-iplugindir=-[Set <dir> to be the default plugin directory]:directory:_files -/'
  '(-pg)-p[Enable function profiling for prof]'
  '(-p)-pg[Enable function profiling for gprof]'
  '-pedantic-errors[Like -pedantic but issue them as errors]'
  '-pedantic[Issue all mandatory diagnostics in the C standard]'
  '-quiet[Do not display functions compiled or elapsed time]'
  '-v[Enable verbose output]'
  '-version[Display the compiler'\''s version]'
  '-w[Suppress warnings]'
# | grep ::
  '-fabi-version=-[Use version <n> of the C++ ABI (default: 2)]:ABI version:(1 2 3 4 5 6)'
  '-fdebug-prefix-map=-[Map one directory name to another in debug information]:/old/dir=/new/dir:->dirtodir'
  '-ffp-contract=-[Perform floating- point expression contraction (default: fast)]:style:(on off fast)'
  '-finstrument-functions-exclude-file-list=-[Do not instrument functions listed in files]:comma-separated file list:->commafiles'
  '-finstrument-functions-exclude-function-list=-[Do not instrument listed functions]:comma-separated list of syms: '
  '-fira-algorithm=-[Set the used IRA algorithm]:algorithm:(priority CB)'
  '-fira-region=-[Set regions for IRA]:region:(all mixed one)'
  '-fplugin=-[Specify a plugin to load]:plugin: ' # TODO: complete plugins?
  '-fprofile-dir=-[Set the top-level directory for storing the profile data]:profile directory:_files -/'
  '-fstack-reuse=-[Set stack reuse level for local variables]:reuse-level:(all named_vars none)'
  '-ftree-parallelize-loops=-[Enable automatic parallelization of loops]:threads: '
)

# How to mostly autogenerate the above stuff:
# joinhelplines() { sed '$!N;s/^\(  -.*\)\n  \s*\([^-]\)/\1 \2/;P;D' }
# gcc-x86() { gcc --help=target,\^undocumented | joinhelplines | joinhelplines }
# compdef _gnu_generic gcc-x86
# printf '%s\n' ${(onq-)_args_cache_gcc_x86}
_arguments -C -M 'L:|-{fWm}no-=-{fWm} r:|[_-]=* r:|=*' \
  "$args[@]" \
  "$args2[@]" && ret=0


case "$state" in
dump)
  _values -s '' 'dump information' \
    'M[only macro definitions]' \
    'N[macro names]' \
    'D[macro definitions and normal output]' \
    'y[debugging information during parsing]' \
    'r[after RTL generation]' \
    'x[only generate RTL]' \
    'j[after jump optimization]' \
    's[after CSE]' \
    'L[after loop optimization]' \
    't[after second CSE pass]' \
    'f[after flow analysis]' \
    'c[after instruction combination]' \
    'S[after first instruction scheduling pass]' \
    'l[after local register allocation]' \
    'g[after global register allocation]' \
    'R[after second instruction scheduling pass]' \
    'J[after last jump optimization]' \
    'd[after delayed branch scheduling]' \
    'k[after conversion from registers to stack]' \
    'a[all dumps]' \
    'm[print memory usage statistics]' \
    'p[annotate assembler output]' && ret=0
  ;;
library)
  _wanted libraries expl library \
      compadd - ${^=LD_LIBRARY_PATH:-/usr/lib /usr/local/lib}/lib*.(a|so*)(:t:fr:s/lib//) && ret=0
  ;;
rundir)
  compset -P '*:'
  compset -S ':*'
  _files -/ -S/ -r '\n\t\- /:' "$@" && ret=0
  ;;
help)
  _values -s , 'help' \
    optimizers warnings target params common \
    c c++ objc objc++ lto ada adascil adawhy fortran go java \
    {\^,}undocumented {\^,}joined {\^,}separate \
  && ret=0
  ;;
dirtodir)
  compset -P '*='
  _files -/ && ret=0
  ;;
commafiles)
  compset -P '*,'
  _files && ret=0
  ;;
esac

return ret