summaryrefslogtreecommitdiffstats
path: root/js/src/jit/x64/BaseAssembler-x64.h
blob: f5a9bb99f9940725ec2e252d3a5d425c1c0028bf (plain)
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
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: set ts=8 sts=2 et sw=2 tw=80:
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef jit_x64_BaseAssembler_x64_h
#define jit_x64_BaseAssembler_x64_h

#include "jit/x86-shared/BaseAssembler-x86-shared.h"

namespace js {
namespace jit {

namespace X86Encoding {

class BaseAssemblerX64 : public BaseAssembler {
 public:
  // Arithmetic operations:

  void addq_rr(RegisterID src, RegisterID dst) {
    spew("addq       %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_ADD_GvEv, src, dst);
  }

  void addq_mr(int32_t offset, RegisterID base, RegisterID dst) {
    spew("addq       " MEM_ob ", %s", ADDR_ob(offset, base), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_ADD_GvEv, offset, base, dst);
  }

  void addq_mr(const void* addr, RegisterID dst) {
    spew("addq       %p, %s", addr, GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_ADD_GvEv, addr, dst);
  }

  void addq_mr(int32_t offset, RegisterID base, RegisterID index, int scale,
               RegisterID dst) {
    spew("addq       " MEM_obs ", %s", ADDR_obs(offset, base, index, scale),
         GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_ADD_GvEv, offset, base, index, scale, dst);
  }

  void addq_rm(RegisterID src, int32_t offset, RegisterID base) {
    spew("addq       %s, " MEM_ob, GPReg64Name(src), ADDR_ob(offset, base));
    m_formatter.oneByteOp64(OP_ADD_EvGv, offset, base, src);
  }

  void addq_rm(RegisterID src, int32_t offset, RegisterID base,
               RegisterID index, int scale) {
    spew("addq       %s, " MEM_obs, GPReg64Name(src),
         ADDR_obs(offset, base, index, scale));
    m_formatter.oneByteOp64(OP_ADD_EvGv, offset, base, index, scale, src);
  }

  void addq_ir(int32_t imm, RegisterID dst) {
    spew("addq       $%d, %s", imm, GPReg64Name(dst));
    if (CAN_SIGN_EXTEND_8_32(imm)) {
      m_formatter.oneByteOp64(OP_GROUP1_EvIb, dst, GROUP1_OP_ADD);
      m_formatter.immediate8s(imm);
    } else {
      if (dst == rax) {
        m_formatter.oneByteOp64(OP_ADD_EAXIv);
      } else {
        m_formatter.oneByteOp64(OP_GROUP1_EvIz, dst, GROUP1_OP_ADD);
      }
      m_formatter.immediate32(imm);
    }
  }

  void addq_i32r(int32_t imm, RegisterID dst) {
    // 32-bit immediate always, for patching.
    spew("addq       $0x%04x, %s", uint32_t(imm), GPReg64Name(dst));
    if (dst == rax) {
      m_formatter.oneByteOp64(OP_ADD_EAXIv);
    } else {
      m_formatter.oneByteOp64(OP_GROUP1_EvIz, dst, GROUP1_OP_ADD);
    }
    m_formatter.immediate32(imm);
  }

  void addq_im(int32_t imm, int32_t offset, RegisterID base) {
    spew("addq       $%d, " MEM_ob, imm, ADDR_ob(offset, base));
    if (CAN_SIGN_EXTEND_8_32(imm)) {
      m_formatter.oneByteOp64(OP_GROUP1_EvIb, offset, base, GROUP1_OP_ADD);
      m_formatter.immediate8s(imm);
    } else {
      m_formatter.oneByteOp64(OP_GROUP1_EvIz, offset, base, GROUP1_OP_ADD);
      m_formatter.immediate32(imm);
    }
  }

  void addq_im(int32_t imm, const void* addr) {
    spew("addq       $%d, %p", imm, addr);
    if (CAN_SIGN_EXTEND_8_32(imm)) {
      m_formatter.oneByteOp64(OP_GROUP1_EvIb, addr, GROUP1_OP_ADD);
      m_formatter.immediate8s(imm);
    } else {
      m_formatter.oneByteOp64(OP_GROUP1_EvIz, addr, GROUP1_OP_ADD);
      m_formatter.immediate32(imm);
    }
  }

  void andq_rr(RegisterID src, RegisterID dst) {
    spew("andq       %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_AND_GvEv, src, dst);
  }

  void andq_mr(int32_t offset, RegisterID base, RegisterID dst) {
    spew("andq       " MEM_ob ", %s", ADDR_ob(offset, base), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_AND_GvEv, offset, base, dst);
  }

  void andq_mr(int32_t offset, RegisterID base, RegisterID index, int scale,
               RegisterID dst) {
    spew("andq       " MEM_obs ", %s", ADDR_obs(offset, base, index, scale),
         GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_AND_GvEv, offset, base, index, scale, dst);
  }

  void andq_mr(const void* addr, RegisterID dst) {
    spew("andq       %p, %s", addr, GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_AND_GvEv, addr, dst);
  }

  void andq_rm(RegisterID src, int32_t offset, RegisterID base) {
    spew("andq       %s, " MEM_ob, GPReg64Name(src), ADDR_ob(offset, base));
    m_formatter.oneByteOp64(OP_AND_EvGv, offset, base, src);
  }

  void andq_rm(RegisterID src, int32_t offset, RegisterID base,
               RegisterID index, int scale) {
    spew("andq       %s, " MEM_obs, GPReg64Name(src),
         ADDR_obs(offset, base, index, scale));
    m_formatter.oneByteOp64(OP_AND_EvGv, offset, base, index, scale, src);
  }

  void orq_mr(int32_t offset, RegisterID base, RegisterID dst) {
    spew("orq        " MEM_ob ", %s", ADDR_ob(offset, base), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_OR_GvEv, offset, base, dst);
  }

  void orq_mr(const void* addr, RegisterID dst) {
    spew("orq        %p, %s", addr, GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_OR_GvEv, addr, dst);
  }

  void orq_rm(RegisterID src, int32_t offset, RegisterID base) {
    spew("orq       %s, " MEM_ob, GPReg64Name(src), ADDR_ob(offset, base));
    m_formatter.oneByteOp64(OP_OR_EvGv, offset, base, src);
  }

  void orq_rm(RegisterID src, int32_t offset, RegisterID base, RegisterID index,
              int scale) {
    spew("orq       %s, " MEM_obs, GPReg64Name(src),
         ADDR_obs(offset, base, index, scale));
    m_formatter.oneByteOp64(OP_OR_EvGv, offset, base, index, scale, src);
  }

  void xorq_mr(int32_t offset, RegisterID base, RegisterID dst) {
    spew("xorq       " MEM_ob ", %s", ADDR_ob(offset, base), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_XOR_GvEv, offset, base, dst);
  }

  void xorq_mr(int32_t offset, RegisterID base, RegisterID index, int scale,
               RegisterID dst) {
    spew("xorq       " MEM_obs ", %s", ADDR_obs(offset, base, index, scale),
         GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_XOR_GvEv, offset, base, index, scale, dst);
  }

  void xorq_mr(const void* addr, RegisterID dst) {
    spew("xorq       %p, %s", addr, GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_XOR_GvEv, addr, dst);
  }

  void xorq_rm(RegisterID src, int32_t offset, RegisterID base) {
    spew("xorq       %s, " MEM_ob, GPReg64Name(src), ADDR_ob(offset, base));
    m_formatter.oneByteOp64(OP_XOR_EvGv, offset, base, src);
  }

  void xorq_rm(RegisterID src, int32_t offset, RegisterID base,
               RegisterID index, int scale) {
    spew("xorq       %s, " MEM_obs, GPReg64Name(src),
         ADDR_obs(offset, base, index, scale));
    m_formatter.oneByteOp64(OP_XOR_EvGv, offset, base, index, scale, src);
  }

  void bswapq_r(RegisterID dst) {
    spew("bswapq     %s", GPReg64Name(dst));
    m_formatter.twoByteOp64(OP2_BSWAP, dst);
  }

  void bsrq_rr(RegisterID src, RegisterID dst) {
    spew("bsrq       %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.twoByteOp64(OP2_BSR_GvEv, src, dst);
  }

  void bsfq_rr(RegisterID src, RegisterID dst) {
    spew("bsfq       %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.twoByteOp64(OP2_BSF_GvEv, src, dst);
  }

  void lzcntq_rr(RegisterID src, RegisterID dst) {
    spew("lzcntq     %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.legacySSEPrefix(VEX_SS);
    m_formatter.twoByteOp64(OP2_LZCNT_GvEv, src, dst);
  }

  void tzcntq_rr(RegisterID src, RegisterID dst) {
    spew("tzcntq     %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.legacySSEPrefix(VEX_SS);
    m_formatter.twoByteOp64(OP2_TZCNT_GvEv, src, dst);
  }

  void popcntq_rr(RegisterID src, RegisterID dst) {
    spew("popcntq    %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.legacySSEPrefix(VEX_SS);
    m_formatter.twoByteOp64(OP2_POPCNT_GvEv, src, dst);
  }

  void andq_ir(int32_t imm, RegisterID dst) {
    spew("andq       $0x%" PRIx64 ", %s", uint64_t(imm), GPReg64Name(dst));
    if (CAN_SIGN_EXTEND_8_32(imm)) {
      m_formatter.oneByteOp64(OP_GROUP1_EvIb, dst, GROUP1_OP_AND);
      m_formatter.immediate8s(imm);
    } else {
      if (dst == rax) {
        m_formatter.oneByteOp64(OP_AND_EAXIv);
      } else {
        m_formatter.oneByteOp64(OP_GROUP1_EvIz, dst, GROUP1_OP_AND);
      }
      m_formatter.immediate32(imm);
    }
  }

  void negq_r(RegisterID dst) {
    spew("negq       %s", GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_GROUP3_Ev, dst, GROUP3_OP_NEG);
  }

  void orq_rr(RegisterID src, RegisterID dst) {
    spew("orq        %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_OR_GvEv, src, dst);
  }

  void orq_ir(int32_t imm, RegisterID dst) {
    spew("orq        $0x%" PRIx64 ", %s", uint64_t(imm), GPReg64Name(dst));
    if (CAN_SIGN_EXTEND_8_32(imm)) {
      m_formatter.oneByteOp64(OP_GROUP1_EvIb, dst, GROUP1_OP_OR);
      m_formatter.immediate8s(imm);
    } else {
      if (dst == rax) {
        m_formatter.oneByteOp64(OP_OR_EAXIv);
      } else {
        m_formatter.oneByteOp64(OP_GROUP1_EvIz, dst, GROUP1_OP_OR);
      }
      m_formatter.immediate32(imm);
    }
  }

  void notq_r(RegisterID dst) {
    spew("notq       %s", GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_GROUP3_Ev, dst, GROUP3_OP_NOT);
  }

  void subq_rr(RegisterID src, RegisterID dst) {
    spew("subq       %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_SUB_GvEv, src, dst);
  }

  void subq_rm(RegisterID src, int32_t offset, RegisterID base) {
    spew("subq       %s, " MEM_ob, GPReg64Name(src), ADDR_ob(offset, base));
    m_formatter.oneByteOp64(OP_SUB_EvGv, offset, base, src);
  }

  void subq_rm(RegisterID src, int32_t offset, RegisterID base,
               RegisterID index, int scale) {
    spew("subq       %s, " MEM_obs, GPReg64Name(src),
         ADDR_obs(offset, base, index, scale));
    m_formatter.oneByteOp64(OP_SUB_EvGv, offset, base, index, scale, src);
  }

  void subq_mr(int32_t offset, RegisterID base, RegisterID dst) {
    spew("subq       " MEM_ob ", %s", ADDR_ob(offset, base), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_SUB_GvEv, offset, base, dst);
  }

  void subq_mr(const void* addr, RegisterID dst) {
    spew("subq       %p, %s", addr, GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_SUB_GvEv, addr, dst);
  }

  void subq_ir(int32_t imm, RegisterID dst) {
    spew("subq       $%d, %s", imm, GPReg64Name(dst));
    if (CAN_SIGN_EXTEND_8_32(imm)) {
      m_formatter.oneByteOp64(OP_GROUP1_EvIb, dst, GROUP1_OP_SUB);
      m_formatter.immediate8s(imm);
    } else {
      if (dst == rax) {
        m_formatter.oneByteOp64(OP_SUB_EAXIv);
      } else {
        m_formatter.oneByteOp64(OP_GROUP1_EvIz, dst, GROUP1_OP_SUB);
      }
      m_formatter.immediate32(imm);
    }
  }

  void xorq_rr(RegisterID src, RegisterID dst) {
    spew("xorq       %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_XOR_GvEv, src, dst);
  }

  void xorq_ir(int32_t imm, RegisterID dst) {
    spew("xorq       $0x%" PRIx64 ", %s", uint64_t(imm), GPReg64Name(dst));
    if (CAN_SIGN_EXTEND_8_32(imm)) {
      m_formatter.oneByteOp64(OP_GROUP1_EvIb, dst, GROUP1_OP_XOR);
      m_formatter.immediate8s(imm);
    } else {
      if (dst == rax) {
        m_formatter.oneByteOp64(OP_XOR_EAXIv);
      } else {
        m_formatter.oneByteOp64(OP_GROUP1_EvIz, dst, GROUP1_OP_XOR);
      }
      m_formatter.immediate32(imm);
    }
  }

  void sarq_CLr(RegisterID dst) {
    spew("sarq       %%cl, %s", GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_GROUP2_EvCL, dst, GROUP2_OP_SAR);
  }

  void shlq_CLr(RegisterID dst) {
    spew("shlq       %%cl, %s", GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_GROUP2_EvCL, dst, GROUP2_OP_SHL);
  }

  void shrq_CLr(RegisterID dst) {
    spew("shrq       %%cl, %s", GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_GROUP2_EvCL, dst, GROUP2_OP_SHR);
  }

  void sarq_ir(int32_t imm, RegisterID dst) {
    MOZ_ASSERT(imm < 64);
    spew("sarq       $%d, %s", imm, GPReg64Name(dst));
    if (imm == 1) {
      m_formatter.oneByteOp64(OP_GROUP2_Ev1, dst, GROUP2_OP_SAR);
    } else {
      m_formatter.oneByteOp64(OP_GROUP2_EvIb, dst, GROUP2_OP_SAR);
      m_formatter.immediate8u(imm);
    }
  }

  void shlq_ir(int32_t imm, RegisterID dst) {
    MOZ_ASSERT(imm < 64);
    spew("shlq       $%d, %s", imm, GPReg64Name(dst));
    if (imm == 1) {
      m_formatter.oneByteOp64(OP_GROUP2_Ev1, dst, GROUP2_OP_SHL);
    } else {
      m_formatter.oneByteOp64(OP_GROUP2_EvIb, dst, GROUP2_OP_SHL);
      m_formatter.immediate8u(imm);
    }
  }

  void shrq_ir(int32_t imm, RegisterID dst) {
    MOZ_ASSERT(imm < 64);
    spew("shrq       $%d, %s", imm, GPReg64Name(dst));
    if (imm == 1) {
      m_formatter.oneByteOp64(OP_GROUP2_Ev1, dst, GROUP2_OP_SHR);
    } else {
      m_formatter.oneByteOp64(OP_GROUP2_EvIb, dst, GROUP2_OP_SHR);
      m_formatter.immediate8u(imm);
    }
  }

  void rolq_ir(int32_t imm, RegisterID dst) {
    MOZ_ASSERT(imm < 64);
    spew("rolq       $%d, %s", imm, GPReg64Name(dst));
    if (imm == 1) {
      m_formatter.oneByteOp64(OP_GROUP2_Ev1, dst, GROUP2_OP_ROL);
    } else {
      m_formatter.oneByteOp64(OP_GROUP2_EvIb, dst, GROUP2_OP_ROL);
      m_formatter.immediate8u(imm);
    }
  }
  void rolq_CLr(RegisterID dst) {
    spew("rolq       %%cl, %s", GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_GROUP2_EvCL, dst, GROUP2_OP_ROL);
  }

  void rorq_ir(int32_t imm, RegisterID dst) {
    MOZ_ASSERT(imm < 64);
    spew("rorq       $%d, %s", imm, GPReg64Name(dst));
    if (imm == 1) {
      m_formatter.oneByteOp64(OP_GROUP2_Ev1, dst, GROUP2_OP_ROR);
    } else {
      m_formatter.oneByteOp64(OP_GROUP2_EvIb, dst, GROUP2_OP_ROR);
      m_formatter.immediate8u(imm);
    }
  }
  void rorq_CLr(RegisterID dst) {
    spew("rorq       %%cl, %s", GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_GROUP2_EvCL, dst, GROUP2_OP_ROR);
  }

  void imulq_rr(RegisterID src, RegisterID dst) {
    spew("imulq      %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.twoByteOp64(OP2_IMUL_GvEv, src, dst);
  }

  void imulq_mr(int32_t offset, RegisterID base, RegisterID dst) {
    spew("imulq      " MEM_ob ", %s", ADDR_ob(offset, base), GPReg64Name(dst));
    m_formatter.twoByteOp64(OP2_IMUL_GvEv, offset, base, dst);
  }

  void imulq_ir(int32_t value, RegisterID src, RegisterID dst) {
    spew("imulq      $%d, %s, %s", value, GPReg64Name(src), GPReg64Name(dst));
    if (CAN_SIGN_EXTEND_8_32(value)) {
      m_formatter.oneByteOp64(OP_IMUL_GvEvIb, src, dst);
      m_formatter.immediate8s(value);
    } else {
      m_formatter.oneByteOp64(OP_IMUL_GvEvIz, src, dst);
      m_formatter.immediate32(value);
    }
  }

  void cqo() {
    spew("cqo        ");
    m_formatter.oneByteOp64(OP_CDQ);
  }

  void idivq_r(RegisterID divisor) {
    spew("idivq      %s", GPReg64Name(divisor));
    m_formatter.oneByteOp64(OP_GROUP3_Ev, divisor, GROUP3_OP_IDIV);
  }

  void divq_r(RegisterID divisor) {
    spew("divq       %s", GPReg64Name(divisor));
    m_formatter.oneByteOp64(OP_GROUP3_Ev, divisor, GROUP3_OP_DIV);
  }

  // Comparisons:

  void cmpq_rr(RegisterID rhs, RegisterID lhs) {
    spew("cmpq       %s, %s", GPReg64Name(rhs), GPReg64Name(lhs));
    m_formatter.oneByteOp64(OP_CMP_GvEv, rhs, lhs);
  }

  void cmpq_rm(RegisterID rhs, int32_t offset, RegisterID base) {
    spew("cmpq       %s, " MEM_ob, GPReg64Name(rhs), ADDR_ob(offset, base));
    m_formatter.oneByteOp64(OP_CMP_EvGv, offset, base, rhs);
  }

  void cmpq_rm(RegisterID rhs, int32_t offset, RegisterID base,
               RegisterID index, int scale) {
    spew("cmpq       %s, " MEM_obs, GPReg64Name(rhs),
         ADDR_obs(offset, base, index, scale));
    m_formatter.oneByteOp64(OP_CMP_EvGv, offset, base, index, scale, rhs);
  }

  void cmpq_mr(int32_t offset, RegisterID base, RegisterID lhs) {
    spew("cmpq       " MEM_ob ", %s", ADDR_ob(offset, base), GPReg64Name(lhs));
    m_formatter.oneByteOp64(OP_CMP_GvEv, offset, base, lhs);
  }

  void cmpq_ir(int32_t rhs, RegisterID lhs) {
    if (rhs == 0) {
      testq_rr(lhs, lhs);
      return;
    }

    spew("cmpq       $0x%" PRIx64 ", %s", uint64_t(rhs), GPReg64Name(lhs));
    if (CAN_SIGN_EXTEND_8_32(rhs)) {
      m_formatter.oneByteOp64(OP_GROUP1_EvIb, lhs, GROUP1_OP_CMP);
      m_formatter.immediate8s(rhs);
    } else {
      if (lhs == rax) {
        m_formatter.oneByteOp64(OP_CMP_EAXIv);
      } else {
        m_formatter.oneByteOp64(OP_GROUP1_EvIz, lhs, GROUP1_OP_CMP);
      }
      m_formatter.immediate32(rhs);
    }
  }

  void cmpq_im(int32_t rhs, int32_t offset, RegisterID base) {
    spew("cmpq       $0x%" PRIx64 ", " MEM_ob, uint64_t(rhs),
         ADDR_ob(offset, base));
    if (CAN_SIGN_EXTEND_8_32(rhs)) {
      m_formatter.oneByteOp64(OP_GROUP1_EvIb, offset, base, GROUP1_OP_CMP);
      m_formatter.immediate8s(rhs);
    } else {
      m_formatter.oneByteOp64(OP_GROUP1_EvIz, offset, base, GROUP1_OP_CMP);
      m_formatter.immediate32(rhs);
    }
  }

  void cmpq_im(int32_t rhs, int32_t offset, RegisterID base, RegisterID index,
               int scale) {
    spew("cmpq       $0x%x, " MEM_obs, uint32_t(rhs),
         ADDR_obs(offset, base, index, scale));
    if (CAN_SIGN_EXTEND_8_32(rhs)) {
      m_formatter.oneByteOp64(OP_GROUP1_EvIb, offset, base, index, scale,
                              GROUP1_OP_CMP);
      m_formatter.immediate8s(rhs);
    } else {
      m_formatter.oneByteOp64(OP_GROUP1_EvIz, offset, base, index, scale,
                              GROUP1_OP_CMP);
      m_formatter.immediate32(rhs);
    }
  }
  void cmpq_im(int32_t rhs, const void* addr) {
    spew("cmpq       $0x%" PRIx64 ", %p", uint64_t(rhs), addr);
    if (CAN_SIGN_EXTEND_8_32(rhs)) {
      m_formatter.oneByteOp64(OP_GROUP1_EvIb, addr, GROUP1_OP_CMP);
      m_formatter.immediate8s(rhs);
    } else {
      m_formatter.oneByteOp64(OP_GROUP1_EvIz, addr, GROUP1_OP_CMP);
      m_formatter.immediate32(rhs);
    }
  }
  void cmpq_rm(RegisterID rhs, const void* addr) {
    spew("cmpq       %s, %p", GPReg64Name(rhs), addr);
    m_formatter.oneByteOp64(OP_CMP_EvGv, addr, rhs);
  }

  void testq_rr(RegisterID rhs, RegisterID lhs) {
    spew("testq      %s, %s", GPReg64Name(rhs), GPReg64Name(lhs));
    m_formatter.oneByteOp64(OP_TEST_EvGv, lhs, rhs);
  }

  void testq_ir(int32_t rhs, RegisterID lhs) {
    // If the mask fits in a 32-bit immediate, we can use testl with a
    // 32-bit subreg.
    if (CAN_ZERO_EXTEND_32_64(rhs)) {
      testl_ir(rhs, lhs);
      return;
    }
    spew("testq      $0x%" PRIx64 ", %s", uint64_t(rhs), GPReg64Name(lhs));
    if (lhs == rax) {
      m_formatter.oneByteOp64(OP_TEST_EAXIv);
    } else {
      m_formatter.oneByteOp64(OP_GROUP3_EvIz, lhs, GROUP3_OP_TEST);
    }
    m_formatter.immediate32(rhs);
  }

  void testq_i32m(int32_t rhs, int32_t offset, RegisterID base) {
    spew("testq      $0x%" PRIx64 ", " MEM_ob, uint64_t(rhs),
         ADDR_ob(offset, base));
    m_formatter.oneByteOp64(OP_GROUP3_EvIz, offset, base, GROUP3_OP_TEST);
    m_formatter.immediate32(rhs);
  }

  void testq_i32m(int32_t rhs, int32_t offset, RegisterID base,
                  RegisterID index, int scale) {
    spew("testq      $0x%4x, " MEM_obs, uint32_t(rhs),
         ADDR_obs(offset, base, index, scale));
    m_formatter.oneByteOp64(OP_GROUP3_EvIz, offset, base, index, scale,
                            GROUP3_OP_TEST);
    m_formatter.immediate32(rhs);
  }

  // Various move ops:

  void cmovCCq_rr(Condition cond, RegisterID src, RegisterID dst) {
    spew("cmov%s     %s, %s", CCName(cond), GPReg64Name(src), GPReg64Name(dst));
    m_formatter.twoByteOp64(cmovccOpcode(cond), src, dst);
  }
  void cmovCCq_mr(Condition cond, int32_t offset, RegisterID base,
                  RegisterID dst) {
    spew("cmov%s     " MEM_ob ", %s", CCName(cond), ADDR_ob(offset, base),
         GPReg64Name(dst));
    m_formatter.twoByteOp64(cmovccOpcode(cond), offset, base, dst);
  }
  void cmovCCq_mr(Condition cond, int32_t offset, RegisterID base,
                  RegisterID index, int scale, RegisterID dst) {
    spew("cmov%s     " MEM_obs ", %s", CCName(cond),
         ADDR_obs(offset, base, index, scale), GPReg64Name(dst));
    m_formatter.twoByteOp64(cmovccOpcode(cond), offset, base, index, scale,
                            dst);
  }

  void cmpxchgq(RegisterID src, int32_t offset, RegisterID base) {
    spew("cmpxchgq   %s, " MEM_ob, GPReg64Name(src), ADDR_ob(offset, base));
    m_formatter.twoByteOp64(OP2_CMPXCHG_GvEw, offset, base, src);
  }

  void cmpxchgq(RegisterID src, int32_t offset, RegisterID base,
                RegisterID index, int scale) {
    spew("cmpxchgq   %s, " MEM_obs, GPReg64Name(src),
         ADDR_obs(offset, base, index, scale));
    m_formatter.twoByteOp64(OP2_CMPXCHG_GvEw, offset, base, index, scale, src);
  }

  void lock_xaddq_rm(RegisterID srcdest, int32_t offset, RegisterID base) {
    spew("lock xaddq %s, " MEM_ob, GPReg64Name(srcdest), ADDR_ob(offset, base));
    m_formatter.oneByteOp(PRE_LOCK);
    m_formatter.twoByteOp64(OP2_XADD_EvGv, offset, base, srcdest);
  }

  void lock_xaddq_rm(RegisterID srcdest, int32_t offset, RegisterID base,
                     RegisterID index, int scale) {
    spew("lock xaddq %s, " MEM_obs, GPReg64Name(srcdest),
         ADDR_obs(offset, base, index, scale));
    m_formatter.oneByteOp(PRE_LOCK);
    m_formatter.twoByteOp64(OP2_XADD_EvGv, offset, base, index, scale, srcdest);
  }

  void xchgq_rr(RegisterID src, RegisterID dst) {
    spew("xchgq      %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_XCHG_GvEv, src, dst);
  }
  void xchgq_rm(RegisterID src, int32_t offset, RegisterID base) {
    spew("xchgq      %s, " MEM_ob, GPReg64Name(src), ADDR_ob(offset, base));
    m_formatter.oneByteOp64(OP_XCHG_GvEv, offset, base, src);
  }
  void xchgq_rm(RegisterID src, int32_t offset, RegisterID base,
                RegisterID index, int scale) {
    spew("xchgq      %s, " MEM_obs, GPReg64Name(src),
         ADDR_obs(offset, base, index, scale));
    m_formatter.oneByteOp64(OP_XCHG_GvEv, offset, base, index, scale, src);
  }

  void movq_rr(RegisterID src, RegisterID dst) {
    spew("movq       %s, %s", GPReg64Name(src), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_MOV_EvGv, dst, src);
  }

  void movq_rm(RegisterID src, int32_t offset, RegisterID base) {
    spew("movq       %s, " MEM_ob, GPReg64Name(src), ADDR_ob(offset, base));
    m_formatter.oneByteOp64(OP_MOV_EvGv, offset, base, src);
  }

  void movq_rm_disp32(RegisterID src, int32_t offset, RegisterID base) {
    spew("movq       %s, " MEM_o32b, GPReg64Name(src), ADDR_o32b(offset, base));
    m_formatter.oneByteOp64_disp32(OP_MOV_EvGv, offset, base, src);
  }

  void movq_rm(RegisterID src, int32_t offset, RegisterID base,
               RegisterID index, int scale) {
    spew("movq       %s, " MEM_obs, GPReg64Name(src),
         ADDR_obs(offset, base, index, scale));
    m_formatter.oneByteOp64(OP_MOV_EvGv, offset, base, index, scale, src);
  }

  void movq_rm(RegisterID src, const void* addr) {
    if (src == rax && !IsAddressImmediate(addr)) {
      movq_EAXm(addr);
      return;
    }

    spew("movq       %s, %p", GPReg64Name(src), addr);
    m_formatter.oneByteOp64(OP_MOV_EvGv, addr, src);
  }

  void movq_mEAX(const void* addr) {
    if (IsAddressImmediate(addr)) {
      movq_mr(addr, rax);
      return;
    }

    spew("movq       %p, %%rax", addr);
    m_formatter.oneByteOp64(OP_MOV_EAXOv);
    m_formatter.immediate64(reinterpret_cast<int64_t>(addr));
  }

  void movq_EAXm(const void* addr) {
    if (IsAddressImmediate(addr)) {
      movq_rm(rax, addr);
      return;
    }

    spew("movq       %%rax, %p", addr);
    m_formatter.oneByteOp64(OP_MOV_OvEAX);
    m_formatter.immediate64(reinterpret_cast<int64_t>(addr));
  }

  void movq_mr(int32_t offset, RegisterID base, RegisterID dst) {
    spew("movq       " MEM_ob ", %s", ADDR_ob(offset, base), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_MOV_GvEv, offset, base, dst);
  }

  void movq_mr_disp32(int32_t offset, RegisterID base, RegisterID dst) {
    spew("movq       " MEM_o32b ", %s", ADDR_o32b(offset, base),
         GPReg64Name(dst));
    m_formatter.oneByteOp64_disp32(OP_MOV_GvEv, offset, base, dst);
  }

  void movq_mr(int32_t offset, RegisterID base, RegisterID index, int scale,
               RegisterID dst) {
    spew("movq       " MEM_obs ", %s", ADDR_obs(offset, base, index, scale),
         GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_MOV_GvEv, offset, base, index, scale, dst);
  }

  void movq_mr(const void* addr, RegisterID dst) {
    if (dst == rax && !IsAddressImmediate(addr)) {
      movq_mEAX(addr);
      return;
    }

    spew("movq       %p, %s", addr, GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_MOV_GvEv, addr, dst);
  }

  void leaq_mr(int32_t offset, RegisterID base, RegisterID index, int scale,
               RegisterID dst) {
    spew("leaq       " MEM_obs ", %s", ADDR_obs(offset, base, index, scale),
         GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_LEA, offset, base, index, scale, dst);
  }

  void movq_i32m(int32_t imm, int32_t offset, RegisterID base) {
    spew("movq       $%d, " MEM_ob, imm, ADDR_ob(offset, base));
    m_formatter.oneByteOp64(OP_GROUP11_EvIz, offset, base, GROUP11_MOV);
    m_formatter.immediate32(imm);
  }
  void movq_i32m(int32_t imm, int32_t offset, RegisterID base, RegisterID index,
                 int scale) {
    spew("movq       $%d, " MEM_obs, imm, ADDR_obs(offset, base, index, scale));
    m_formatter.oneByteOp64(OP_GROUP11_EvIz, offset, base, index, scale,
                            GROUP11_MOV);
    m_formatter.immediate32(imm);
  }
  void movq_i32m(int32_t imm, const void* addr) {
    spew("movq       $%d, %p", imm, addr);
    m_formatter.oneByteOp64(OP_GROUP11_EvIz, addr, GROUP11_MOV);
    m_formatter.immediate32(imm);
  }

  // Note that this instruction sign-extends its 32-bit immediate field to 64
  // bits and loads the 64-bit value into a 64-bit register.
  //
  // Note also that this is similar to the movl_i32r instruction, except that
  // movl_i32r *zero*-extends its 32-bit immediate, and it has smaller code
  // size, so it's preferred for values which could use either.
  void movq_i32r(int32_t imm, RegisterID dst) {
    spew("movq       $%d, %s", imm, GPRegName(dst));
    m_formatter.oneByteOp64(OP_GROUP11_EvIz, dst, GROUP11_MOV);
    m_formatter.immediate32(imm);
  }

  void movq_i64r(int64_t imm, RegisterID dst) {
    spew("movabsq    $0x%" PRIx64 ", %s", uint64_t(imm), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_MOV_EAXIv, dst);
    m_formatter.immediate64(imm);
  }

  void movsbq_rr(RegisterID src, RegisterID dst) {
    spew("movsbq     %s, %s", GPReg32Name(src), GPReg64Name(dst));
    m_formatter.twoByteOp64(OP2_MOVSX_GvEb, src, dst);
  }
  void movsbq_mr(int32_t offset, RegisterID base, RegisterID dst) {
    spew("movsbq     " MEM_ob ", %s", ADDR_ob(offset, base), GPReg64Name(dst));
    m_formatter.twoByteOp64(OP2_MOVSX_GvEb, offset, base, dst);
  }
  void movsbq_mr(int32_t offset, RegisterID base, RegisterID index, int scale,
                 RegisterID dst) {
    spew("movsbq     " MEM_obs ", %s", ADDR_obs(offset, base, index, scale),
         GPReg64Name(dst));
    m_formatter.twoByteOp64(OP2_MOVSX_GvEb, offset, base, index, scale, dst);
  }

  void movswq_rr(RegisterID src, RegisterID dst) {
    spew("movswq     %s, %s", GPReg32Name(src), GPReg64Name(dst));
    m_formatter.twoByteOp64(OP2_MOVSX_GvEw, src, dst);
  }
  void movswq_mr(int32_t offset, RegisterID base, RegisterID dst) {
    spew("movswq     " MEM_ob ", %s", ADDR_ob(offset, base), GPReg64Name(dst));
    m_formatter.twoByteOp64(OP2_MOVSX_GvEw, offset, base, dst);
  }
  void movswq_mr(int32_t offset, RegisterID base, RegisterID index, int scale,
                 RegisterID dst) {
    spew("movswq     " MEM_obs ", %s", ADDR_obs(offset, base, index, scale),
         GPReg64Name(dst));
    m_formatter.twoByteOp64(OP2_MOVSX_GvEw, offset, base, index, scale, dst);
  }

  void movslq_rr(RegisterID src, RegisterID dst) {
    spew("movslq     %s, %s", GPReg32Name(src), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_MOVSXD_GvEv, src, dst);
  }
  void movslq_mr(int32_t offset, RegisterID base, RegisterID dst) {
    spew("movslq     " MEM_ob ", %s", ADDR_ob(offset, base), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_MOVSXD_GvEv, offset, base, dst);
  }
  void movslq_mr(int32_t offset, RegisterID base, RegisterID index, int scale,
                 RegisterID dst) {
    spew("movslq     " MEM_obs ", %s", ADDR_obs(offset, base, index, scale),
         GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_MOVSXD_GvEv, offset, base, index, scale, dst);
  }

  [[nodiscard]] JmpSrc movl_ripr(RegisterID dst) {
    m_formatter.oneByteRipOp(OP_MOV_GvEv, 0, (RegisterID)dst);
    JmpSrc label(m_formatter.size());
    spew("movl       " MEM_o32r ", %s", ADDR_o32r(label.offset()),
         GPReg32Name(dst));
    return label;
  }

  [[nodiscard]] JmpSrc movl_rrip(RegisterID src) {
    m_formatter.oneByteRipOp(OP_MOV_EvGv, 0, (RegisterID)src);
    JmpSrc label(m_formatter.size());
    spew("movl       %s, " MEM_o32r "", GPReg32Name(src),
         ADDR_o32r(label.offset()));
    return label;
  }

  [[nodiscard]] JmpSrc movq_ripr(RegisterID dst) {
    m_formatter.oneByteRipOp64(OP_MOV_GvEv, 0, dst);
    JmpSrc label(m_formatter.size());
    spew("movq       " MEM_o32r ", %s", ADDR_o32r(label.offset()),
         GPRegName(dst));
    return label;
  }

  [[nodiscard]] JmpSrc movq_rrip(RegisterID src) {
    m_formatter.oneByteRipOp64(OP_MOV_EvGv, 0, (RegisterID)src);
    JmpSrc label(m_formatter.size());
    spew("movq       %s, " MEM_o32r "", GPRegName(src),
         ADDR_o32r(label.offset()));
    return label;
  }

  void leaq_mr(int32_t offset, RegisterID base, RegisterID dst) {
    spew("leaq       " MEM_ob ", %s", ADDR_ob(offset, base), GPReg64Name(dst));
    m_formatter.oneByteOp64(OP_LEA, offset, base, dst);
  }

  [[nodiscard]] JmpSrc leaq_rip(RegisterID dst) {
    m_formatter.oneByteRipOp64(OP_LEA, 0, dst);
    JmpSrc label(m_formatter.size());
    spew("leaq       " MEM_o32r ", %s", ADDR_o32r(label.offset()),
         GPRegName(dst));
    return label;
  }

  // Flow control:

  void jmp_rip(int ripOffset) {
    // rip-relative addressing.
    spew("jmp        *%d(%%rip)", ripOffset);
    m_formatter.oneByteRipOp(OP_GROUP5_Ev, ripOffset, GROUP5_OP_JMPN);
  }

  void immediate64(int64_t imm) {
    spew(".quad      %lld", (long long)imm);
    m_formatter.immediate64(imm);
  }

  // SSE operations:

  void vcvtsq2sd_rr(RegisterID src1, XMMRegisterID src0, XMMRegisterID dst) {
    twoByteOpInt64Simd("vcvtsi2sd", VEX_SD, OP2_CVTSI2SD_VsdEd, src1, src0,
                       dst);
  }
  void vcvtsq2ss_rr(RegisterID src1, XMMRegisterID src0, XMMRegisterID dst) {
    twoByteOpInt64Simd("vcvtsi2ss", VEX_SS, OP2_CVTSI2SD_VsdEd, src1, src0,
                       dst);
  }

  void vcvtsi2sdq_rr(RegisterID src, XMMRegisterID dst) {
    twoByteOpInt64Simd("vcvtsi2sdq", VEX_SD, OP2_CVTSI2SD_VsdEd, src,
                       invalid_xmm, dst);
  }

  void vcvttsd2sq_rr(XMMRegisterID src, RegisterID dst) {
    twoByteOpSimdInt64("vcvttsd2si", VEX_SD, OP2_CVTTSD2SI_GdWsd, src, dst);
  }

  void vcvttss2sq_rr(XMMRegisterID src, RegisterID dst) {
    twoByteOpSimdInt64("vcvttss2si", VEX_SS, OP2_CVTTSD2SI_GdWsd, src, dst);
  }

  void vmovq_rr(XMMRegisterID src, RegisterID dst) {
    // While this is called "vmovq", it actually uses the vmovd encoding
    // with a REX prefix modifying it to be 64-bit.
    twoByteOpSimdInt64("vmovq", VEX_PD, OP2_MOVD_EdVd, (XMMRegisterID)dst,
                       (RegisterID)src);
  }

  void vpextrq_irr(unsigned lane, XMMRegisterID src, RegisterID dst) {
    MOZ_ASSERT(lane < 2);
    threeByteOpImmSimdInt64("vpextrq", VEX_PD, OP3_PEXTRQ_EvVdqIb, ESCAPE_3A,
                            lane, src, dst);
  }

  void vpinsrq_irr(unsigned lane, RegisterID src1, XMMRegisterID src0,
                   XMMRegisterID dst) {
    MOZ_ASSERT(lane < 2);
    threeByteOpImmInt64Simd("vpinsrq", VEX_PD, OP3_PINSRQ_VdqEvIb, ESCAPE_3A,
                            lane, src1, src0, dst);
  }

  void vmovq_rr(RegisterID src, XMMRegisterID dst) {
    // While this is called "vmovq", it actually uses the vmovd encoding
    // with a REX prefix modifying it to be 64-bit.
    twoByteOpInt64Simd("vmovq", VEX_PD, OP2_MOVD_VdEd, src, invalid_xmm, dst);
  }

  [[nodiscard]] JmpSrc vmovsd_ripr(XMMRegisterID dst) {
    return twoByteRipOpSimd("vmovsd", VEX_SD, OP2_MOVSD_VsdWsd, dst);
  }
  [[nodiscard]] JmpSrc vmovss_ripr(XMMRegisterID dst) {
    return twoByteRipOpSimd("vmovss", VEX_SS, OP2_MOVSD_VsdWsd, dst);
  }
  [[nodiscard]] JmpSrc vmovaps_ripr(XMMRegisterID dst) {
    return twoByteRipOpSimd("vmovaps", VEX_PS, OP2_MOVAPS_VsdWsd, dst);
  }
  [[nodiscard]] JmpSrc vmovdqa_ripr(XMMRegisterID dst) {
    return twoByteRipOpSimd("vmovdqa", VEX_PD, OP2_MOVDQ_VdqWdq, dst);
  }

  [[nodiscard]] JmpSrc vpaddb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpaddb", VEX_PD, OP2_PADDB_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpaddw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpaddw", VEX_PD, OP2_PADDW_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpaddd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpaddd", VEX_PD, OP2_PADDD_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpaddq_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpaddq", VEX_PD, OP2_PADDQ_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpsubb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpsubb", VEX_PD, OP2_PSUBB_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpsubw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpsubw", VEX_PD, OP2_PSUBW_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpsubd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpsubd", VEX_PD, OP2_PSUBD_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpsubq_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpsubq", VEX_PD, OP2_PSUBQ_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpmullw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpmullw", VEX_PD, OP2_PMULLW_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpmulld_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return threeByteRipOpSimd("vpmulld", VEX_PD, OP3_PMULLD_VdqWdq, ESCAPE_38,
                              src, dst);
  }
  [[nodiscard]] JmpSrc vpaddsb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpaddsb", VEX_PD, OP2_PADDSB_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpaddusb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpaddusb", VEX_PD, OP2_PADDUSB_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpaddsw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpaddsw", VEX_PD, OP2_PADDSW_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpaddusw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpaddusw", VEX_PD, OP2_PADDUSW_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpsubsb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpsubsb", VEX_PD, OP2_PSUBSB_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpsubusb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpsubusb", VEX_PD, OP2_PSUBUSB_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpsubsw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpsubsw", VEX_PD, OP2_PSUBSW_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpsubusw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpsubusw", VEX_PD, OP2_PSUBUSW_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpminsb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return threeByteRipOpSimd("vpminsb", VEX_PD, OP3_PMINSB_VdqWdq, ESCAPE_38,
                              src, dst);
  }
  [[nodiscard]] JmpSrc vpminub_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpminub", VEX_PD, OP2_PMINUB_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpminsw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpminsw", VEX_PD, OP2_PMINSW_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpminuw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return threeByteRipOpSimd("vpminuw", VEX_PD, OP3_PMINUW_VdqWdq, ESCAPE_38,
                              src, dst);
  }
  [[nodiscard]] JmpSrc vpminsd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return threeByteRipOpSimd("vpminsd", VEX_PD, OP3_PMINSD_VdqWdq, ESCAPE_38,
                              src, dst);
  }
  [[nodiscard]] JmpSrc vpminud_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return threeByteRipOpSimd("vpminud", VEX_PD, OP3_PMINUD_VdqWdq, ESCAPE_38,
                              src, dst);
  }
  [[nodiscard]] JmpSrc vpmaxsb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return threeByteRipOpSimd("vpmaxsb", VEX_PD, OP3_PMAXSB_VdqWdq, ESCAPE_38,
                              src, dst);
  }
  [[nodiscard]] JmpSrc vpmaxub_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpmaxub", VEX_PD, OP2_PMAXUB_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpmaxsw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpmaxsw", VEX_PD, OP2_PMAXSW_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpmaxuw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return threeByteRipOpSimd("vpmaxuw", VEX_PD, OP3_PMAXUW_VdqWdq, ESCAPE_38,
                              src, dst);
  }
  [[nodiscard]] JmpSrc vpmaxsd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return threeByteRipOpSimd("vpmaxsd", VEX_PD, OP3_PMAXSD_VdqWdq, ESCAPE_38,
                              src, dst);
  }
  [[nodiscard]] JmpSrc vpmaxud_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return threeByteRipOpSimd("vpmaxud", VEX_PD, OP3_PMAXUD_VdqWdq, ESCAPE_38,
                              src, dst);
  }
  [[nodiscard]] JmpSrc vpand_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpand", VEX_PD, OP2_PANDDQ_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpxor_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpxor", VEX_PD, OP2_PXORDQ_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpor_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpor", VEX_PD, OP2_PORDQ_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vaddps_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vaddps", VEX_PS, OP2_ADDPS_VpsWps, src, dst);
  }
  [[nodiscard]] JmpSrc vaddpd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vaddpd", VEX_PD, OP2_ADDPD_VpdWpd, src, dst);
  }
  [[nodiscard]] JmpSrc vsubps_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vsubps", VEX_PS, OP2_SUBPS_VpsWps, src, dst);
  }
  [[nodiscard]] JmpSrc vsubpd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vsubpd", VEX_PD, OP2_SUBPD_VpdWpd, src, dst);
  }
  [[nodiscard]] JmpSrc vdivps_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vdivps", VEX_PS, OP2_DIVPS_VpsWps, src, dst);
  }
  [[nodiscard]] JmpSrc vdivpd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vdivpd", VEX_PD, OP2_DIVPD_VpdWpd, src, dst);
  }
  [[nodiscard]] JmpSrc vmulps_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vmulps", VEX_PS, OP2_MULPS_VpsWps, src, dst);
  }
  [[nodiscard]] JmpSrc vmulpd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vmulpd", VEX_PD, OP2_MULPD_VpdWpd, src, dst);
  }
  [[nodiscard]] JmpSrc vandpd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vandpd", VEX_PD, OP2_ANDPD_VpdWpd, src, dst);
  }
  [[nodiscard]] JmpSrc vminpd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vminpd", VEX_PD, OP2_MINPD_VpdWpd, src, dst);
  }
  [[nodiscard]] JmpSrc vpacksswb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpacksswb", VEX_PD, OP2_PACKSSWB_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpackuswb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpackuswb", VEX_PD, OP2_PACKUSWB_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpackssdw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpackssdw", VEX_PD, OP2_PACKSSDW_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpackusdw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return threeByteRipOpSimd("vpackusdw", VEX_PD, OP3_PACKUSDW_VdqWdq,
                              ESCAPE_38, src, dst);
  }
  [[nodiscard]] JmpSrc vpunpckldq_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpunpckldq", VEX_PD, OP2_PUNPCKLDQ_VdqWdq, src,
                            dst);
  }
  [[nodiscard]] JmpSrc vunpcklps_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vunpcklps", VEX_PS, OP2_UNPCKLPS_VsdWsd, src, dst);
  }
  [[nodiscard]] JmpSrc vptest_ripr(XMMRegisterID lhs) {
    return threeByteRipOpSimd("vptest", VEX_PD, OP3_PTEST_VdVd, ESCAPE_38, lhs);
  }
  [[nodiscard]] JmpSrc vpshufb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return threeByteRipOpSimd("vpshufb", VEX_PD, OP3_PSHUFB_VdqWdq, ESCAPE_38,
                              src, dst);
  }
  [[nodiscard]] JmpSrc vpmaddwd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpmaddwd", VEX_PD, OP2_PMADDWD_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpcmpeqb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpcmpeqb", VEX_PD, OP2_PCMPEQB_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpcmpgtb_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpcmpgtb", VEX_PD, OP2_PCMPGTB_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpcmpeqw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpcmpeqw", VEX_PD, OP2_PCMPEQW_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpcmpgtw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpcmpgtw", VEX_PD, OP2_PCMPGTW_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpcmpeqd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpcmpeqd", VEX_PD, OP2_PCMPEQD_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vpcmpgtd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpcmpgtd", VEX_PD, OP2_PCMPGTD_VdqWdq, src, dst);
  }
  [[nodiscard]] JmpSrc vcmpeqps_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpImmSimd("vcmpps", VEX_PS, OP2_CMPPS_VpsWps,
                               X86Encoding::ConditionCmp_EQ, src, dst);
  }
  [[nodiscard]] JmpSrc vcmpneqps_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpImmSimd("vcmpps", VEX_PS, OP2_CMPPS_VpsWps,
                               X86Encoding::ConditionCmp_NEQ, src, dst);
  }
  [[nodiscard]] JmpSrc vcmpltps_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpImmSimd("vcmpps", VEX_PS, OP2_CMPPS_VpsWps,
                               X86Encoding::ConditionCmp_LT, src, dst);
  }
  [[nodiscard]] JmpSrc vcmpleps_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpImmSimd("vcmpps", VEX_PS, OP2_CMPPS_VpsWps,
                               X86Encoding::ConditionCmp_LE, src, dst);
  }
  [[nodiscard]] JmpSrc vcmpgeps_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpImmSimd("vcmpps", VEX_PS, OP2_CMPPS_VpsWps,
                               X86Encoding::ConditionCmp_GE, src, dst);
  }
  [[nodiscard]] JmpSrc vcmpeqpd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpImmSimd("vcmppd", VEX_PD, OP2_CMPPD_VpdWpd,
                               X86Encoding::ConditionCmp_EQ, src, dst);
  }
  [[nodiscard]] JmpSrc vcmpneqpd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpImmSimd("vcmppd", VEX_PD, OP2_CMPPD_VpdWpd,
                               X86Encoding::ConditionCmp_NEQ, src, dst);
  }
  [[nodiscard]] JmpSrc vcmpltpd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpImmSimd("vcmppd", VEX_PD, OP2_CMPPD_VpdWpd,
                               X86Encoding::ConditionCmp_LT, src, dst);
  }
  [[nodiscard]] JmpSrc vcmplepd_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpImmSimd("vcmppd", VEX_PD, OP2_CMPPD_VpdWpd,
                               X86Encoding::ConditionCmp_LE, src, dst);
  }
  [[nodiscard]] JmpSrc vpmaddubsw_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return threeByteRipOpSimd("vpmaddubsw", VEX_PD, OP3_PMADDUBSW_VdqWdq,
                              ESCAPE_38, src, dst);
  }
  [[nodiscard]] JmpSrc vpmuludq_ripr(XMMRegisterID src, XMMRegisterID dst) {
    return twoByteRipOpSimd("vpmuludq", VEX_PD, OP2_PMULUDQ_VdqWdq, src, dst);
  }

  // BMI instructions:

  void sarxq_rrr(RegisterID src, RegisterID shift, RegisterID dst) {
    spew("sarxq      %s, %s, %s", GPReg64Name(src), GPReg64Name(shift),
         GPReg64Name(dst));

    RegisterID rm = src;
    XMMRegisterID src0 = static_cast<XMMRegisterID>(shift);
    int reg = dst;
    m_formatter.threeByteOpVex64(VEX_SS /* = F3 */, OP3_SARX_GyEyBy, ESCAPE_38,
                                 rm, src0, reg);
  }

  void shlxq_rrr(RegisterID src, RegisterID shift, RegisterID dst) {
    spew("shlxq      %s, %s, %s", GPReg64Name(src), GPReg64Name(shift),
         GPReg64Name(dst));

    RegisterID rm = src;
    XMMRegisterID src0 = static_cast<XMMRegisterID>(shift);
    int reg = dst;
    m_formatter.threeByteOpVex64(VEX_PD /* = 66 */, OP3_SHLX_GyEyBy, ESCAPE_38,
                                 rm, src0, reg);
  }

  void shrxq_rrr(RegisterID src, RegisterID shift, RegisterID dst) {
    spew("shrxq      %s, %s, %s", GPReg64Name(src), GPReg64Name(shift),
         GPReg64Name(dst));

    RegisterID rm = src;
    XMMRegisterID src0 = static_cast<XMMRegisterID>(shift);
    int reg = dst;
    m_formatter.threeByteOpVex64(VEX_SD /* = F2 */, OP3_SHRX_GyEyBy, ESCAPE_38,
                                 rm, src0, reg);
  }

 private:
  [[nodiscard]] JmpSrc twoByteRipOpSimd(const char* name, VexOperandType ty,
                                        TwoByteOpcodeID opcode,
                                        XMMRegisterID reg) {
    MOZ_ASSERT(!IsXMMReversedOperands(opcode));
    m_formatter.legacySSEPrefix(ty);
    m_formatter.twoByteRipOp(opcode, 0, reg);
    JmpSrc label(m_formatter.size());
    spew("%-11s " MEM_o32r ", %s", legacySSEOpName(name),
         ADDR_o32r(label.offset()), XMMRegName(reg));
    return label;
  }

  [[nodiscard]] JmpSrc twoByteRipOpSimd(const char* name, VexOperandType ty,
                                        TwoByteOpcodeID opcode,
                                        XMMRegisterID src0, XMMRegisterID dst) {
    MOZ_ASSERT(src0 != invalid_xmm && !IsXMMReversedOperands(opcode));
    if (useLegacySSEEncoding(src0, dst)) {
      m_formatter.legacySSEPrefix(ty);
      m_formatter.twoByteRipOp(opcode, 0, dst);
      JmpSrc label(m_formatter.size());
      spew("%-11s" MEM_o32r ", %s", legacySSEOpName(name),
           ADDR_o32r(label.offset()), XMMRegName(dst));
      return label;
    }

    m_formatter.twoByteRipOpVex(ty, opcode, 0, src0, dst);
    JmpSrc label(m_formatter.size());
    spew("%-11s, " MEM_o32r ", %s, %s", name, ADDR_o32r(label.offset()),
         XMMRegName(src0), XMMRegName(dst));
    return label;
  }

  [[nodiscard]] JmpSrc twoByteRipOpImmSimd(const char* name, VexOperandType ty,
                                           TwoByteOpcodeID opcode, uint32_t imm,
                                           XMMRegisterID src0,
                                           XMMRegisterID dst) {
    MOZ_ASSERT(src0 != invalid_xmm && !IsXMMReversedOperands(opcode));
    if (useLegacySSEEncoding(src0, dst)) {
      m_formatter.legacySSEPrefix(ty);
      m_formatter.twoByteRipOp(opcode, 0, dst);
      m_formatter.immediate8u(imm);
      JmpSrc label(m_formatter.size(),
                   /* bytes trailing the patch field = */ 1);
      spew("%-11s$0x%x, " MEM_o32r ", %s", legacySSEOpName(name), imm,
           ADDR_o32r(label.offset()), XMMRegName(dst));
      return label;
    }

    m_formatter.twoByteRipOpVex(ty, opcode, 0, src0, dst);
    m_formatter.immediate8u(imm);
    JmpSrc label(m_formatter.size(),
                 /* bytes trailing the patch field = */ 1);
    spew("%-11s$0x%x, " MEM_o32r ", %s, %s", name, imm,
         ADDR_o32r(label.offset()), XMMRegName(src0), XMMRegName(dst));
    return label;
  }

  void twoByteOpInt64Simd(const char* name, VexOperandType ty,
                          TwoByteOpcodeID opcode, RegisterID rm,
                          XMMRegisterID src0, XMMRegisterID dst) {
    if (useLegacySSEEncoding(src0, dst)) {
      if (IsXMMReversedOperands(opcode)) {
        spew("%-11s%s, %s", legacySSEOpName(name), XMMRegName(dst),
             GPRegName(rm));
      } else {
        spew("%-11s%s, %s", legacySSEOpName(name), GPRegName(rm),
             XMMRegName(dst));
      }
      m_formatter.legacySSEPrefix(ty);
      m_formatter.twoByteOp64(opcode, rm, dst);
      return;
    }

    if (src0 == invalid_xmm) {
      if (IsXMMReversedOperands(opcode)) {
        spew("%-11s%s, %s", name, XMMRegName(dst), GPRegName(rm));
      } else {
        spew("%-11s%s, %s", name, GPRegName(rm), XMMRegName(dst));
      }
    } else {
      spew("%-11s%s, %s, %s", name, GPRegName(rm), XMMRegName(src0),
           XMMRegName(dst));
    }
    m_formatter.twoByteOpVex64(ty, opcode, rm, src0, dst);
  }

  void twoByteOpSimdInt64(const char* name, VexOperandType ty,
                          TwoByteOpcodeID opcode, XMMRegisterID rm,
                          RegisterID dst) {
    if (useLegacySSEEncodingAlways()) {
      if (IsXMMReversedOperands(opcode)) {
        spew("%-11s%s, %s", legacySSEOpName(name), GPRegName(dst),
             XMMRegName(rm));
      } else if (opcode == OP2_MOVD_EdVd) {
        spew("%-11s%s, %s", legacySSEOpName(name),
             XMMRegName((XMMRegisterID)dst), GPRegName((RegisterID)rm));
      } else {
        spew("%-11s%s, %s", legacySSEOpName(name), XMMRegName(rm),
             GPRegName(dst));
      }
      m_formatter.legacySSEPrefix(ty);
      m_formatter.twoByteOp64(opcode, (RegisterID)rm, dst);
      return;
    }

    if (IsXMMReversedOperands(opcode)) {
      spew("%-11s%s, %s", name, GPRegName(dst), XMMRegName(rm));
    } else if (opcode == OP2_MOVD_EdVd) {
      spew("%-11s%s, %s", name, XMMRegName((XMMRegisterID)dst),
           GPRegName((RegisterID)rm));
    } else {
      spew("%-11s%s, %s", name, XMMRegName(rm), GPRegName(dst));
    }
    m_formatter.twoByteOpVex64(ty, opcode, (RegisterID)rm, invalid_xmm,
                               (XMMRegisterID)dst);
  }

  [[nodiscard]] JmpSrc threeByteRipOpSimd(const char* name, VexOperandType ty,
                                          ThreeByteOpcodeID opcode,
                                          ThreeByteEscape escape,
                                          XMMRegisterID dst) {
    m_formatter.legacySSEPrefix(ty);
    m_formatter.threeByteRipOp(opcode, escape, 0, dst);
    JmpSrc label(m_formatter.size());
    spew("%-11s" MEM_o32r ", %s", legacySSEOpName(name),
         ADDR_o32r(label.offset()), XMMRegName(dst));
    return label;
  }

  [[nodiscard]] JmpSrc threeByteRipOpSimd(const char* name, VexOperandType ty,
                                          ThreeByteOpcodeID opcode,
                                          ThreeByteEscape escape,
                                          XMMRegisterID src0,
                                          XMMRegisterID dst) {
    MOZ_ASSERT(src0 != invalid_xmm);
    if (useLegacySSEEncoding(src0, dst)) {
      m_formatter.legacySSEPrefix(ty);
      m_formatter.threeByteRipOp(opcode, escape, 0, dst);
      JmpSrc label(m_formatter.size());
      spew("%-11s" MEM_o32r ", %s", legacySSEOpName(name),
           ADDR_o32r(label.offset()), XMMRegName(dst));
      return label;
    }

    m_formatter.threeByteRipOpVex(ty, opcode, escape, 0, src0, dst);
    JmpSrc label(m_formatter.size());
    spew("%-11s" MEM_o32r ", %s, %s", name, ADDR_o32r(label.offset()),
         XMMRegName(src0), XMMRegName(dst));
    return label;
  }

  void threeByteOpImmSimdInt64(const char* name, VexOperandType ty,
                               ThreeByteOpcodeID opcode, ThreeByteEscape escape,
                               uint32_t imm, XMMRegisterID src,
                               RegisterID dst) {
    spew("%-11s$0x%x, %s, %s", legacySSEOpName(name), imm, GPReg64Name(dst),
         XMMRegName(src));
    m_formatter.legacySSEPrefix(ty);
    m_formatter.threeByteOp64(opcode, escape, dst, (RegisterID)src);
    m_formatter.immediate8u(imm);
  }

  void threeByteOpImmInt64Simd(const char* name, VexOperandType ty,
                               ThreeByteOpcodeID opcode, ThreeByteEscape escape,
                               uint32_t imm, RegisterID src1,
                               XMMRegisterID src0, XMMRegisterID dst) {
    if (useLegacySSEEncoding(src0, dst)) {
      spew("%-11s$0x%x, %s, %s", legacySSEOpName(name), imm, GPReg64Name(src1),
           XMMRegName(dst));
      m_formatter.legacySSEPrefix(ty);
      m_formatter.threeByteOp64(opcode, escape, src1, (RegisterID)dst);
      m_formatter.immediate8u(imm);
      return;
    }

    MOZ_ASSERT(src0 != invalid_xmm);
    spew("%-11s$0x%x, %s, %s, %s", name, imm, GPReg64Name(src1),
         XMMRegName(src0), XMMRegName(dst));
    m_formatter.threeByteOpVex64(ty, opcode, escape, src1, src0,
                                 (RegisterID)dst);
    m_formatter.immediate8u(imm);
  }
};

using BaseAssemblerSpecific = BaseAssemblerX64;

}  // namespace X86Encoding

}  // namespace jit
}  // namespace js

#endif /* jit_x64_BaseAssembler_x64_h */