test/MC/X86/x86-16.s

   1 // RUN: llvm-mc -triple i386-unknown-unknown --show-encoding %s | FileCheck %s
   2
   3         .code16
   4
   5         movl $0x12345678, %ebx
   6 // CHECK: movl
   7 // CHECK: encoding: [0x66,0xbb,0x78,0x56,0x34,0x12]
   8         pause
   9 // CHECK: pause
  10 // CHECK: encoding: [0xf3,0x90]
  11         sfence
  12 // CHECK: sfence
  13 // CHECK: encoding: [0x0f,0xae,0xf8]
  14         lfence
  15 // CHECK: lfence
  16 // CHECK: encoding: [0x0f,0xae,0xe8]
  17         mfence
  18         stgi
  19 // CHECK: stgi
  20 // CHECK: encoding: [0x0f,0x01,0xdc]
  21         clgi
  22 // CHECK: clgi
  23 // CHECK: encoding: [0x0f,0x01,0xdd]
  24
  25         rdtscp
  26 // CHECK: rdtscp
  27 // CHECK:  encoding: [0x0f,0x01,0xf9]
  28
  29
  30 // CHECK: movl  %eax, 16(%ebp)          # encoding: [0x67,0x66,0x89,0x45,0x10]
  31         movl    %eax, 16(%ebp)
  32 // CHECK: movl  %eax, -16(%ebp)          # encoding: [0x67,0x66,0x89,0x45,0xf0]
  33         movl    %eax, -16(%ebp)
  34
  35 // CHECK: testb %bl, %cl                # encoding: [0x84,0xcb]
  36         testb %bl, %cl
  37
  38 // CHECK: cmpl  %eax, %ebx              # encoding: [0x66,0x39,0xc3]
  39         cmpl %eax, %ebx
  40
  41 // CHECK: addw  %ax, %ax                # encoding: [0x01,0xc0]
  42         addw %ax, %ax
  43
  44 // CHECK: shrl  %eax                    # encoding: [0x66,0xd1,0xe8]
  45         shrl $1, %eax
  46
  47 // CHECK: shll  %eax                    # encoding: [0x66,0xd1,0xe0]
  48         sall $1, %eax
  49 // CHECK: shll  %eax                    # encoding: [0x66,0xd1,0xe0]
  50         sal $1, %eax
  51
  52 into
  53 // CHECK: into
  54 // CHECK:  encoding: [0xce]
  55 int3
  56 // CHECK: int3
  57 // CHECK:  encoding: [0xcc]
  58 int $4
  59 // CHECK: int $4
  60 // CHECK:  encoding: [0xcd,0x04]
  61 int $255
  62 // CHECK: int $255
  63 // CHECK:  encoding: [0xcd,0xff]
  64
  65 // CHECK: pushfw        # encoding: [0x9c]
  66         pushf
  67 // CHECK: pushfl        # encoding: [0x66,0x9c]
  68         pushfl
  69 // CHECK: popfw         # encoding: [0x9d]
  70         popf
  71 // CHECK: popfl         # encoding: [0x66,0x9d]
  72         popfl
  73
  74 retl
  75 // CHECK: ret
  76 // CHECK:  encoding: [0x66,0xc3]
  77
  78 // CHECK: cmoval        %eax, %edx
  79 // CHECK:  encoding: [0x66,0x0f,0x47,0xd0]
  80                 cmoval  %eax,%edx
  81
  82 // CHECK: cmovael       %eax, %edx
  83 // CHECK:  encoding: [0x66,0x0f,0x43,0xd0]
  84                 cmovael %eax,%edx
  85
  86 // CHECK: cmovbel       %eax, %edx
  87 // CHECK:  encoding: [0x66,0x0f,0x46,0xd0]
  88                 cmovbel %eax,%edx
  89
  90 // CHECK: cmovbl        %eax, %edx
  91 // CHECK:  encoding: [0x66,0x0f,0x42,0xd0]
  92                 cmovbl  %eax,%edx
  93
  94 // CHECK: cmovbw %bx, %bx
  95 cmovnae %bx,%bx
  96
  97
  98 // CHECK: cmovbel       %eax, %edx
  99 // CHECK:  encoding: [0x66,0x0f,0x46,0xd0]
 100                 cmovbel %eax,%edx
 101
 102 // CHECK: cmovbl        %eax, %edx
 103 // CHECK:  encoding: [0x66,0x0f,0x42,0xd0]
 104                 cmovcl  %eax,%edx
 105
 106 // CHECK: cmovel        %eax, %edx
 107 // CHECK:  encoding: [0x66,0x0f,0x44,0xd0]
 108                 cmovel  %eax,%edx
 109
 110 // CHECK: cmovgl        %eax, %edx
 111 // CHECK:  encoding: [0x66,0x0f,0x4f,0xd0]
 112                 cmovgl  %eax,%edx
 113
 114 // CHECK: cmovgel       %eax, %edx
 115 // CHECK:  encoding: [0x66,0x0f,0x4d,0xd0]
 116                 cmovgel %eax,%edx
 117
 118 // CHECK: cmovll        %eax, %edx
 119 // CHECK:  encoding: [0x66,0x0f,0x4c,0xd0]
 120                 cmovll  %eax,%edx
 121
 122 // CHECK: cmovlel       %eax, %edx
 123 // CHECK:  encoding: [0x66,0x0f,0x4e,0xd0]
 124                 cmovlel %eax,%edx
 125
 126 // CHECK: cmovbel       %eax, %edx
 127 // CHECK:  encoding: [0x66,0x0f,0x46,0xd0]
 128                 cmovnal %eax,%edx
 129
 130 // CHECK: cmovnel       %eax, %edx
 131 // CHECK:  encoding: [0x66,0x0f,0x45,0xd0]
 132                 cmovnel %eax,%edx
 133
 134 // CHECK: cmovael       %eax, %edx
 135 // CHECK:  encoding: [0x66,0x0f,0x43,0xd0]
 136                 cmovnbl %eax,%edx
 137
 138 // CHECK: cmoval        %eax, %edx
 139 // CHECK:  encoding: [0x66,0x0f,0x47,0xd0]
 140                 cmovnbel        %eax,%edx
 141
 142 // CHECK: cmovael       %eax, %edx
 143 // CHECK:  encoding: [0x66,0x0f,0x43,0xd0]
 144                 cmovncl %eax,%edx
 145
 146 // CHECK: cmovnel       %eax, %edx
 147 // CHECK:  encoding: [0x66,0x0f,0x45,0xd0]
 148                 cmovnel %eax,%edx
 149
 150 // CHECK: cmovlel       %eax, %edx
 151 // CHECK:  encoding: [0x66,0x0f,0x4e,0xd0]
 152                 cmovngl %eax,%edx
 153
 154 // CHECK: cmovgel       %eax, %edx
 155 // CHECK:  encoding: [0x66,0x0f,0x4d,0xd0]
 156                 cmovnl  %eax,%edx
 157
 158 // CHECK: cmovnel       %eax, %edx
 159 // CHECK:  encoding: [0x66,0x0f,0x45,0xd0]
 160                 cmovnel %eax,%edx
 161
 162 // CHECK: cmovlel       %eax, %edx
 163 // CHECK:  encoding: [0x66,0x0f,0x4e,0xd0]
 164                 cmovngl %eax,%edx
 165
 166 // CHECK: cmovll        %eax, %edx
 167 // CHECK:  encoding: [0x66,0x0f,0x4c,0xd0]
 168                 cmovngel        %eax,%edx
 169
 170 // CHECK: cmovgel       %eax, %edx
 171 // CHECK:  encoding: [0x66,0x0f,0x4d,0xd0]
 172                 cmovnll %eax,%edx
 173
 174 // CHECK: cmovgl        %eax, %edx
 175 // CHECK:  encoding: [0x66,0x0f,0x4f,0xd0]
 176                 cmovnlel        %eax,%edx
 177
 178 // CHECK: cmovnol       %eax, %edx
 179 // CHECK:  encoding: [0x66,0x0f,0x41,0xd0]
 180                 cmovnol %eax,%edx
 181
 182 // CHECK: cmovnpl       %eax, %edx
 183 // CHECK:  encoding: [0x66,0x0f,0x4b,0xd0]
 184                 cmovnpl %eax,%edx
 185
 186 // CHECK: cmovnsl       %eax, %edx
 187 // CHECK:  encoding: [0x66,0x0f,0x49,0xd0]
 188                 cmovnsl %eax,%edx
 189
 190 // CHECK: cmovnel       %eax, %edx
 191 // CHECK:  encoding: [0x66,0x0f,0x45,0xd0]
 192                 cmovnzl %eax,%edx
 193
 194 // CHECK: cmovol        %eax, %edx
 195 // CHECK:  encoding: [0x66,0x0f,0x40,0xd0]
 196                 cmovol  %eax,%edx
 197
 198 // CHECK: cmovpl        %eax, %edx
 199 // CHECK:  encoding: [0x66,0x0f,0x4a,0xd0]
 200                 cmovpl  %eax,%edx
 201
 202 // CHECK: cmovsl        %eax, %edx
 203 // CHECK:  encoding: [0x66,0x0f,0x48,0xd0]
 204                 cmovsl  %eax,%edx
 205
 206 // CHECK: cmovel        %eax, %edx
 207 // CHECK:  encoding: [0x66,0x0f,0x44,0xd0]
 208                 cmovzl  %eax,%edx
 209
 210 // CHECK: fmul  %st(0)
 211 // CHECK:  encoding: [0xd8,0xc8]
 212         fmul %st(0), %st
 213
 214 // CHECK: fadd  %st(0)
 215 // CHECK:  encoding: [0xd8,0xc0]
 216         fadd %st(0), %st
 217
 218 // CHECK: fsub  %st(0)
 219 // CHECK:  encoding: [0xd8,0xe0]
 220         fsub %st(0), %st
 221
 222 // CHECK: fsubr %st(0)
 223 // CHECK:  encoding: [0xd8,0xe8]
 224         fsubr %st(0), %st
 225
 226 // CHECK: fdivr %st(0)
 227 // CHECK:  encoding: [0xd8,0xf8]
 228         fdivr %st(0), %st
 229
 230 // CHECK: fdiv  %st(0)
 231 // CHECK:  encoding: [0xd8,0xf0]
 232         fdiv %st(0), %st
 233
 234 // CHECK: movl  %cs, %eax
 235 // CHECK:  encoding: [0x66,0x8c,0xc8]
 236         movl %cs, %eax
 237
 238 // CHECK: movw  %cs, %ax
 239 // CHECK:  encoding: [0x8c,0xc8]
 240         movw %cs, %ax
 241
 242 // CHECK: movl  %cs, (%eax)
 243 // CHECK:  encoding: [0x67,0x66,0x8c,0x08]
 244         movl %cs, (%eax)
 245
 246 // CHECK: movw  %cs, (%eax)
 247 // CHECK:  encoding: [0x67,0x8c,0x08]
 248         movw %cs, (%eax)
 249
 250 // CHECK: movl  %eax, %cs
 251 // CHECK:  encoding: [0x66,0x8e,0xc8]
 252         movl %eax, %cs
 253
 254 // CHECK: movl  (%eax), %cs
 255 // CHECK:  encoding: [0x67,0x66,0x8e,0x08]
 256         movl (%eax), %cs
 257
 258 // CHECK: movw  (%eax), %cs
 259 // CHECK:  encoding: [0x67,0x8e,0x08]
 260         movw (%eax), %cs
 261
 262 // CHECK: movl  %cr0, %eax
 263 // CHECK:  encoding: [0x0f,0x20,0xc0]
 264         movl %cr0,%eax
 265
 266 // CHECK: movl  %cr1, %eax
 267 // CHECK:  encoding: [0x0f,0x20,0xc8]
 268         movl %cr1,%eax
 269
 270 // CHECK: movl  %cr2, %eax
 271 // CHECK:  encoding: [0x0f,0x20,0xd0]
 272         movl %cr2,%eax
 273
 274 // CHECK: movl  %cr3, %eax
 275 // CHECK:  encoding: [0x0f,0x20,0xd8]
 276         movl %cr3,%eax
 277
 278 // CHECK: movl  %cr4, %eax
 279 // CHECK:  encoding: [0x0f,0x20,0xe0]
 280         movl %cr4,%eax
 281
 282 // CHECK: movl  %dr0, %eax
 283 // CHECK:  encoding: [0x0f,0x21,0xc0]
 284         movl %dr0,%eax
 285
 286 // CHECK: movl  %dr1, %eax
 287 // CHECK:  encoding: [0x0f,0x21,0xc8]
 288         movl %dr1,%eax
 289
 290 // CHECK: movl  %dr1, %eax
 291 // CHECK:  encoding: [0x0f,0x21,0xc8]
 292         movl %dr1,%eax
 293
 294 // CHECK: movl  %dr2, %eax
 295 // CHECK:  encoding: [0x0f,0x21,0xd0]
 296         movl %dr2,%eax
 297
 298 // CHECK: movl  %dr3, %eax
 299 // CHECK:  encoding: [0x0f,0x21,0xd8]
 300         movl %dr3,%eax
 301
 302 // CHECK: movl  %dr4, %eax
 303 // CHECK:  encoding: [0x0f,0x21,0xe0]
 304         movl %dr4,%eax
 305
 306 // CHECK: movl  %dr5, %eax
 307 // CHECK:  encoding: [0x0f,0x21,0xe8]
 308         movl %dr5,%eax
 309
 310 // CHECK: movl  %dr6, %eax
 311 // CHECK:  encoding: [0x0f,0x21,0xf0]
 312         movl %dr6,%eax
 313
 314 // CHECK: movl  %dr7, %eax
 315 // CHECK:  encoding: [0x0f,0x21,0xf8]
 316         movl %dr7,%eax
 317
 318 // CHECK: wait
 319 // CHECK:  encoding: [0x9b]
 320         fwait
 321
 322 // CHECK: pusha
 323 // CHECK:  encoding: [0x60]
 324                 pusha
 325
 326 // CHECK: popa
 327 // CHECK:  encoding: [0x61]
 328                 popa
 329
 330 // CHECK: pushaw
 331 // CHECK:  encoding: [0x60]
 332                 pushaw
 333
 334 // CHECK: popaw
 335 // CHECK:  encoding: [0x61]
 336                 popaw
 337
 338 // CHECK: pushal
 339 // CHECK:  encoding: [0x66,0x60]
 340                 pushal
 341
 342 // CHECK: popal
 343 // CHECK:  encoding: [0x66,0x61]
 344                 popal
 345
 346 // CHECK: jmpw *8(%eax)
 347 // CHECK:   encoding: [0x67,0xff,0x60,0x08]
 348         jmp     *8(%eax)
 349
 350 // CHECK: jmpl *8(%eax)
 351 // CHECK:   encoding: [0x67,0x66,0xff,0x60,0x08]
 352         jmpl    *8(%eax)
 353
 354 // CHECK: lcalll $2, $4660
 355 // CHECK:   encoding: [0x66,0x9a,0x34,0x12,0x00,0x00,0x02,0x00]
 356 lcalll $0x2, $0x1234
 357
 358
 359 iret
 360 // CHECK: iretw
 361 // CHECK: encoding: [0xcf]
 362 iretw
 363 // CHECK: iretw
 364 // CHECK: encoding: [0xcf]
 365 iretl
 366 // CHECK: iretl
 367 // CHECK: encoding: [0x66,0xcf]
 368
 369 sysret
 370 // CHECK: sysretl
 371 // CHECK: encoding: [0x0f,0x07]
 372 sysretl
 373 // CHECK: sysretl
 374 // CHECK: encoding: [0x0f,0x07]
 375
 376 testl   %ecx, -24(%ebp)
 377 // CHECK: testl -24(%ebp), %ecx
 378 testl   -24(%ebp), %ecx
 379 // CHECK: testl -24(%ebp), %ecx
 380
 381
 382 push %cs
 383 // CHECK: pushw %cs
 384 // CHECK: encoding: [0x0e]
 385 push %ds
 386 // CHECK: pushw %ds
 387 // CHECK: encoding: [0x1e]
 388 push %ss
 389 // CHECK: pushw %ss
 390 // CHECK: encoding: [0x16]
 391 push %es
 392 // CHECK: pushw %es
 393 // CHECK: encoding: [0x06]
 394 push %fs
 395 // CHECK: pushw %fs
 396 // CHECK: encoding: [0x0f,0xa0]
 397 push %gs
 398 // CHECK: pushw %gs
 399 // CHECK: encoding: [0x0f,0xa8]
 400
 401 pushw %cs
 402 // CHECK: pushw %cs
 403 // CHECK: encoding: [0x0e]
 404 pushw %ds
 405 // CHECK: pushw %ds
 406 // CHECK: encoding: [0x1e]
 407 pushw %ss
 408 // CHECK: pushw %ss
 409 // CHECK: encoding: [0x16]
 410 pushw %es
 411 // CHECK: pushw %es
 412 // CHECK: encoding: [0x06]
 413 pushw %fs
 414 // CHECK: pushw %fs
 415 // CHECK: encoding: [0x0f,0xa0]
 416 pushw %gs
 417 // CHECK: pushw %gs
 418 // CHECK: encoding: [0x0f,0xa8]
 419
 420 pushl %cs
 421 // CHECK: pushl %cs
 422 // CHECK: encoding: [0x66,0x0e]
 423 pushl %ds
 424 // CHECK: pushl %ds
 425 // CHECK: encoding: [0x66,0x1e]
 426 pushl %ss
 427 // CHECK: pushl %ss
 428 // CHECK: encoding: [0x66,0x16]
 429 pushl %es
 430 // CHECK: pushl %es
 431 // CHECK: encoding: [0x66,0x06]
 432 pushl %fs
 433 // CHECK: pushl %fs
 434 // CHECK: encoding: [0x66,0x0f,0xa0]
 435 pushl %gs
 436 // CHECK: pushl %gs
 437 // CHECK: encoding: [0x66,0x0f,0xa8]
 438
 439 pop %ss
 440 // CHECK: popw  %ss
 441 // CHECK: encoding: [0x17]
 442 pop %ds
 443 // CHECK: popw  %ds
 444 // CHECK: encoding: [0x1f]
 445 pop %es
 446 // CHECK: popw  %es
 447 // CHECK: encoding: [0x07]
 448
 449 popl %ss
 450 // CHECK: popl  %ss
 451 // CHECK: encoding: [0x66,0x17]
 452 popl %ds
 453 // CHECK: popl  %ds
 454 // CHECK: encoding: [0x66,0x1f]
 455 popl %es
 456 // CHECK: popl  %es
 457 // CHECK: encoding: [0x66,0x07]
 458
 459 pushfd
 460 // CHECK: pushfl
 461 popfd
 462 // CHECK: popfl
 463 pushfl
 464 // CHECK: pushfl
 465 popfl
 466 // CHECK: popfl
 467
 468
 469         setc    %bl
 470         setnae  %bl
 471         setnb   %bl
 472         setnc   %bl
 473         setna   %bl
 474         setnbe  %bl
 475         setpe   %bl
 476         setpo   %bl
 477         setnge  %bl
 478         setnl   %bl
 479         setng   %bl
 480         setnle  %bl
 481
 482         setneb  %cl // CHECK: setne %cl
 483         setcb   %bl // CHECK: setb %bl
 484         setnaeb %bl // CHECK: setb %bl
 485
 486
 487 // CHECK: lcalll        $31438, $31438
 488 // CHECK: lcalll        $31438, $31438
 489 // CHECK: ljmpl $31438, $31438
 490 // CHECK: ljmpl $31438, $31438
 491
 492 calll   $0x7ace,$0x7ace
 493 lcalll  $0x7ace,$0x7ace
 494 jmpl    $0x7ace,$0x7ace
 495 ljmpl   $0x7ace,$0x7ace
 496
 497 // CHECK: lcallw        $31438, $31438
 498 // CHECK: lcallw        $31438, $31438
 499 // CHECK: ljmpw $31438, $31438
 500 // CHECK: ljmpw $31438, $31438
 501
 502 callw   $0x7ace,$0x7ace
 503 lcallw  $0x7ace,$0x7ace
 504 jmpw    $0x7ace,$0x7ace
 505 ljmpw   $0x7ace,$0x7ace
 506
 507 // CHECK: lcallw        $31438, $31438
 508 // CHECK: lcallw        $31438, $31438
 509 // CHECK: ljmpw $31438, $31438
 510 // CHECK: ljmpw $31438, $31438
 511
 512 call    $0x7ace,$0x7ace
 513 lcall   $0x7ace,$0x7ace
 514 jmp     $0x7ace,$0x7ace
 515 ljmp    $0x7ace,$0x7ace
 516
 517 // CHECK: calll a
 518  calll a
 519
 520 // CHECK:       incb    %al # encoding: [0xfe,0xc0]
 521         incb %al
 522
 523 // CHECK:       incw    %ax # encoding: [0x40]
 524         incw %ax
 525
 526 // CHECK:       incl    %eax # encoding: [0x66,0x40]
 527         incl %eax
 528
 529 // CHECK:       decb    %al # encoding: [0xfe,0xc8]
 530         decb %al
 531
 532 // CHECK:       decw    %ax # encoding: [0x48]
 533         decw %ax
 534
 535 // CHECK:       decl    %eax # encoding: [0x66,0x48]
 536         decl %eax
 537
 538 // CHECK: pshufw $14, %mm4, %mm0 # encoding: [0x0f,0x70,0xc4,0x0e]
 539 pshufw $14, %mm4, %mm0
 540
 541 // CHECK: pshufw $90, %mm4, %mm0 # encoding: [0x0f,0x70,0xc4,0x5a]
 542 pshufw $90, %mm4, %mm0
 543
 544 // CHECK: aaa
 545 // CHECK:  encoding: [0x37]
 546                 aaa
 547
 548 // CHECK: aad   $1
 549 // CHECK:  encoding: [0xd5,0x01]
 550                 aad     $1
 551
 552 // CHECK: aad
 553 // CHECK:  encoding: [0xd5,0x0a]
 554                 aad     $0xA
 555
 556 // CHECK: aad
 557 // CHECK:  encoding: [0xd5,0x0a]
 558                 aad
 559
 560 // CHECK: aam   $2
 561 // CHECK:  encoding: [0xd4,0x02]
 562                 aam     $2
 563
 564 // CHECK: aam
 565 // CHECK:  encoding: [0xd4,0x0a]
 566                 aam     $0xA
 567
 568 // CHECK: aam
 569 // CHECK:  encoding: [0xd4,0x0a]
 570                 aam
 571
 572 // CHECK: aas
 573 // CHECK:  encoding: [0x3f]
 574                 aas
 575
 576 // CHECK: daa
 577 // CHECK:  encoding: [0x27]
 578                 daa
 579
 580 // CHECK: das
 581 // CHECK:  encoding: [0x2f]
 582                 das
 583
 584 // CHECK: retw  $31438
 585 // CHECK:  encoding: [0xc2,0xce,0x7a]
 586                 retw    $0x7ace
 587
 588 // CHECK: lretw $31438
 589 // CHECK:  encoding: [0xca,0xce,0x7a]
 590                 lretw   $0x7ace
 591
 592 // CHECK: retw  $31438
 593 // CHECK:  encoding: [0xc2,0xce,0x7a]
 594                 ret     $0x7ace
 595
 596 // CHECK: lretw $31438
 597 // CHECK:  encoding: [0xca,0xce,0x7a]
 598                 lret    $0x7ace
 599
 600 // CHECK: retl  $31438
 601 // CHECK:  encoding: [0x66,0xc2,0xce,0x7a]
 602                 retl    $0x7ace
 603
 604 // CHECK: lretl $31438
 605 // CHECK:  encoding: [0x66,0xca,0xce,0x7a]
 606                 lretl   $0x7ace
 607
 608 // CHECK: bound 2(%eax), %bx
 609 // CHECK:  encoding: [0x67,0x62,0x58,0x02]
 610                 bound   2(%eax),%bx
 611
 612 // CHECK: bound 4(%ebx), %ecx
 613 // CHECK:  encoding: [0x67,0x66,0x62,0x4b,0x04]
 614                 bound   4(%ebx),%ecx
 615
 616 // CHECK: arpl  %bx, %bx
 617 // CHECK:  encoding: [0x63,0xdb]
 618                 arpl    %bx,%bx
 619
 620 // CHECK: arpl  %bx, 6(%ecx)
 621 // CHECK:  encoding: [0x67,0x63,0x59,0x06]
 622                 arpl    %bx,6(%ecx)
 623
 624 // CHECK: lgdtw 4(%eax)
 625 // CHECK:  encoding: [0x67,0x0f,0x01,0x50,0x04]
 626                 lgdtw   4(%eax)
 627
 628 // CHECK: lgdtw 4(%eax)
 629 // CHECK:  encoding: [0x67,0x0f,0x01,0x50,0x04]
 630                 lgdt    4(%eax)
 631
 632 // CHECK: lgdtl 4(%eax)
 633 // CHECK:  encoding: [0x67,0x66,0x0f,0x01,0x50,0x04]
 634                 lgdtl   4(%eax)
 635
 636 // CHECK: lidtw 4(%eax)
 637 // CHECK:  encoding: [0x67,0x0f,0x01,0x58,0x04]
 638                 lidtw   4(%eax)
 639
 640 // CHECK: lidtw 4(%eax)
 641 // CHECK:  encoding: [0x67,0x0f,0x01,0x58,0x04]
 642                 lidt    4(%eax)
 643
 644 // CHECK: lidtl 4(%eax)
 645 // CHECK:  encoding: [0x67,0x66,0x0f,0x01,0x58,0x04]
 646                 lidtl   4(%eax)
 647
 648 // CHECK: sgdtw 4(%eax)
 649 // CHECK:  encoding: [0x67,0x0f,0x01,0x40,0x04]
 650                 sgdtw   4(%eax)
 651
 652 // CHECK: sgdtw 4(%eax)
 653 // CHECK:  encoding: [0x67,0x0f,0x01,0x40,0x04]
 654                 sgdt    4(%eax)
 655
 656 // CHECK: sgdtl 4(%eax)
 657 // CHECK:  encoding: [0x67,0x66,0x0f,0x01,0x40,0x04]
 658                 sgdtl   4(%eax)
 659
 660 // CHECK: sidtw 4(%eax)
 661 // CHECK:  encoding: [0x67,0x0f,0x01,0x48,0x04]
 662                 sidtw   4(%eax)
 663
 664 // CHECK: sidtw 4(%eax)
 665 // CHECK:  encoding: [0x67,0x0f,0x01,0x48,0x04]
 666                 sidt    4(%eax)
 667
 668 // CHECK: sidtl 4(%eax)
 669 // CHECK:  encoding: [0x67,0x66,0x0f,0x01,0x48,0x04]
 670                 sidtl   4(%eax)
 671
 672 // CHECK: fcompi        %st(2)
 673 // CHECK:  encoding: [0xdf,0xf2]
 674                 fcompi  %st(2), %st
 675
 676 // CHECK: fcompi        %st(2)
 677 // CHECK:  encoding: [0xdf,0xf2]
 678                 fcompi  %st(2)
 679
 680 // CHECK: fcompi
 681 // CHECK:  encoding: [0xdf,0xf1]
 682                 fcompi
 683
 684 // CHECK: fucompi       %st(2)
 685 // CHECK:  encoding: [0xdf,0xea]
 686                 fucompi %st(2),%st
 687
 688 // CHECK: fucompi       %st(2)
 689 // CHECK:  encoding: [0xdf,0xea]
 690                 fucompi %st(2)
 691
 692 // CHECK: fucompi
 693 // CHECK:  encoding: [0xdf,0xe9]
 694                 fucompi
 695
 696 // CHECK: wait
 697 // CHECK:  encoding: [0x9b]
 698                 fclex
 699
 700 // CHECK: fnclex
 701 // CHECK:  encoding: [0xdb,0xe2]
 702                 fnclex
 703
 704 // CHECK: ud2
 705 // CHECK:  encoding: [0x0f,0x0b]
 706                 ud2
 707
 708 // CHECK: ud2
 709 // CHECK:  encoding: [0x0f,0x0b]
 710                 ud2a
 711
 712 // CHECK: ud2b
 713 // CHECK:  encoding: [0x0f,0xb9]
 714                 ud2b
 715
 716 // CHECK: loope 0
 717 // CHECK: encoding: [0xe1,A]
 718         loopz 0
 719
 720 // CHECK: loopne 0
 721 // CHECK: encoding: [0xe0,A]
 722         loopnz 0
 723
 724 // CHECK: outsb # encoding: [0x6e]
 725 // CHECK: outsb
 726 // CHECK: outsb
 727         outsb
 728         outsb   %ds:(%si), %dx
 729         outsb   (%si), %dx
 730
 731 // CHECK: outsw # encoding: [0x6f]
 732 // CHECK: outsw
 733 // CHECK: outsw
 734         outsw
 735         outsw   %ds:(%si), %dx
 736         outsw   (%si), %dx
 737
 738 // CHECK: outsl # encoding: [0x66,0x6f]
 739 // CHECK: outsl
 740         outsl
 741         outsl   %ds:(%si), %dx
 742         outsl   (%si), %dx
 743
 744 // CHECK: insb # encoding: [0x6c]
 745 // CHECK: insb
 746         insb
 747         insb    %dx, %es:(%di)
 748
 749 // CHECK: insw # encoding: [0x6d]
 750 // CHECK: insw
 751         insw
 752         insw    %dx, %es:(%di)
 753
 754 // CHECK: insl # encoding: [0x66,0x6d]
 755 // CHECK: insl
 756         insl
 757         insl    %dx, %es:(%di)
 758
 759 // CHECK: movsb # encoding: [0xa4]
 760 // CHECK: movsb
 761 // CHECK: movsb
 762         movsb
 763         movsb   %ds:(%si), %es:(%di)
 764         movsb   (%si), %es:(%di)
 765
 766 // CHECK: movsw # encoding: [0xa5]
 767 // CHECK: movsw
 768 // CHECK: movsw
 769         movsw
 770         movsw   %ds:(%si), %es:(%di)
 771         movsw   (%si), %es:(%di)
 772
 773 // CHECK: movsl # encoding: [0x66,0xa5]
 774 // CHECK: movsl
 775 // CHECK: movsl
 776         movsl
 777         movsl   %ds:(%si), %es:(%di)
 778         movsl   (%si), %es:(%di)
 779
 780 // CHECK: lodsb # encoding: [0xac]
 781 // CHECK: lodsb
 782 // CHECK: lodsb
 783 // CHECK: lodsb
 784 // CHECK: lodsb
 785         lodsb
 786         lodsb   %ds:(%si), %al
 787         lodsb   (%si), %al
 788         lods    %ds:(%si), %al
 789         lods    (%si), %al
 790
 791 // CHECK: lodsw # encoding: [0xad]
 792 // CHECK: lodsw
 793 // CHECK: lodsw
 794 // CHECK: lodsw
 795 // CHECK: lodsw
 796         lodsw
 797         lodsw   %ds:(%si), %ax
 798         lodsw   (%si), %ax
 799         lods    %ds:(%si), %ax
 800         lods    (%si), %ax
 801
 802 // CHECK: lodsl # encoding: [0x66,0xad]
 803 // CHECK: lodsl
 804 // CHECK: lodsl
 805 // CHECK: lodsl
 806 // CHECK: lodsl
 807         lodsl
 808         lodsl   %ds:(%si), %eax
 809         lodsl   (%si), %eax
 810         lods    %ds:(%si), %eax
 811         lods    (%si), %eax
 812
 813 // CHECK: stosb # encoding: [0xaa]
 814 // CHECK: stosb
 815 // CHECK: stosb
 816         stosb
 817         stosb   %al, %es:(%di)
 818         stos    %al, %es:(%di)
 819
 820 // CHECK: stosw # encoding: [0xab]
 821 // CHECK: stosw
 822 // CHECK: stosw
 823         stosw
 824         stosw   %ax, %es:(%di)
 825         stos    %ax, %es:(%di)
 826
 827 // CHECK: stosl # encoding: [0x66,0xab]
 828 // CHECK: stosl
 829 // CHECK: stosl
 830         stosl
 831         stosl   %eax, %es:(%di)
 832         stos    %eax, %es:(%di)
 833
 834 // CHECK: strw
 835 // CHECK: encoding: [0x0f,0x00,0xc8]
 836         str %ax
 837
 838 // CHECK: strl
 839 // CHECK: encoding: [0x66,0x0f,0x00,0xc8]
 840         str %eax
 841
 842
 843 // CHECK: fsubp
 844 // CHECK: encoding: [0xde,0xe1]
 845 fsubp %st,%st(1)
 846
 847 // CHECK: fsubp %st(2)
 848 // CHECK: encoding: [0xde,0xe2]
 849 fsubp   %st, %st(2)
 850
 851 // CHECK: xchgl %eax, %eax
 852 // CHECK: encoding: [0x66,0x90]
 853 xchgl %eax, %eax
 854
 855 // CHECK: xchgw %ax, %ax
 856 // CHECK: encoding: [0x90]
 857 xchgw %ax, %ax
 858
 859 // CHECK: xchgl %ecx, %eax
 860 // CHECK: encoding: [0x66,0x91]
 861 xchgl %ecx, %eax
 862
 863 // CHECK: xchgl %ecx, %eax
 864 // CHECK: encoding: [0x66,0x91]
 865 xchgl %eax, %ecx
 866
 867 // CHECK: retw
 868 // CHECK: encoding: [0xc3]
 869 retw
 870
 871 // CHECK: retl
 872 // CHECK: encoding: [0x66,0xc3]
 873 retl
 874
 875 // CHECK: lretw
 876 // CHECK: encoding: [0xcb]
 877 lretw
 878
 879 // CHECK: lretl
 880 // CHECK: encoding: [0x66,0xcb]
 881 lretl