llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-trunc.mir

   1 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
   2 # RUN: llc -mtriple=amdgcn -run-pass=instruction-select -verify-machineinstrs  %s -o - | FileCheck %s -check-prefixes=GCN
   3
   4 ---
   5
   6 name: trunc_sgpr_s32_to_s1
   7 legalized:       true
   8 regBankSelected: true
   9
  10 body: |
  11   bb.0:
  12     liveins: $sgpr0
  13     ; GCN-LABEL: name: trunc_sgpr_s32_to_s1
  14     ; GCN: liveins: $sgpr0
  15     ; GCN-NEXT: {{  $}}
  16     ; GCN-NEXT: [[COPY:%[0-9]+]]:sreg_32 = COPY $sgpr0
  17     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY]]
  18     %0:sgpr(s32) = COPY $sgpr0
  19     %1:sgpr(s1) = G_TRUNC %0
  20     S_ENDPGM 0, implicit %1
  21 ...
  22 ---
  23
  24 name: trunc_sgpr_s32_to_s16
  25 legalized:       true
  26 regBankSelected: true
  27
  28 body: |
  29   bb.0:
  30     liveins: $sgpr0
  31     ; GCN-LABEL: name: trunc_sgpr_s32_to_s16
  32     ; GCN: liveins: $sgpr0
  33     ; GCN-NEXT: {{  $}}
  34     ; GCN-NEXT: [[COPY:%[0-9]+]]:sreg_32 = COPY $sgpr0
  35     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY]]
  36     %0:sgpr(s32) = COPY $sgpr0
  37     %1:sgpr(s16) = G_TRUNC %0
  38     S_ENDPGM 0, implicit %1
  39 ...
  40 ---
  41
  42 name: trunc_sgpr_s64_to_s32
  43 legalized:       true
  44 regBankSelected: true
  45
  46 body: |
  47   bb.0:
  48     liveins: $sgpr0_sgpr1
  49     ; GCN-LABEL: name: trunc_sgpr_s64_to_s32
  50     ; GCN: liveins: $sgpr0_sgpr1
  51     ; GCN-NEXT: {{  $}}
  52     ; GCN-NEXT: [[COPY:%[0-9]+]]:sreg_64 = COPY $sgpr0_sgpr1
  53     ; GCN-NEXT: [[COPY1:%[0-9]+]]:sreg_32 = COPY [[COPY]].sub0
  54     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
  55     %0:sgpr(s64) = COPY $sgpr0_sgpr1
  56     %1:sgpr(s32) = G_TRUNC %0
  57     S_ENDPGM 0, implicit %1
  58 ...
  59 ---
  60
  61 name: trunc_sgpr_s64_to_s16
  62 legalized:       true
  63 regBankSelected: true
  64
  65 body: |
  66   bb.0:
  67     liveins: $sgpr0_sgpr1
  68     ; GCN-LABEL: name: trunc_sgpr_s64_to_s16
  69     ; GCN: liveins: $sgpr0_sgpr1
  70     ; GCN-NEXT: {{  $}}
  71     ; GCN-NEXT: [[COPY:%[0-9]+]]:sreg_64 = COPY $sgpr0_sgpr1
  72     ; GCN-NEXT: [[COPY1:%[0-9]+]]:sreg_32 = COPY [[COPY]].sub0
  73     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
  74     %0:sgpr(s64) = COPY $sgpr0_sgpr1
  75     %1:sgpr(s16) = G_TRUNC %0
  76     S_ENDPGM 0, implicit %1
  77 ...
  78 ---
  79
  80 name: trunc_sgpr_s64_to_s1
  81 legalized:       true
  82 regBankSelected: true
  83
  84 body: |
  85   bb.0:
  86     liveins: $sgpr0_sgpr1
  87     ; GCN-LABEL: name: trunc_sgpr_s64_to_s1
  88     ; GCN: liveins: $sgpr0_sgpr1
  89     ; GCN-NEXT: {{  $}}
  90     ; GCN-NEXT: [[COPY:%[0-9]+]]:sreg_64 = COPY $sgpr0_sgpr1
  91     ; GCN-NEXT: [[COPY1:%[0-9]+]]:sreg_32 = COPY [[COPY]].sub0
  92     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
  93     %0:sgpr(s64) = COPY $sgpr0_sgpr1
  94     %1:sgpr(s1) = G_TRUNC %0
  95     S_ENDPGM 0, implicit %1
  96 ...
  97 ---
  98
  99 name: trunc_sgpr_s96_to_s16
 100 legalized:       true
 101 regBankSelected: true
 102
 103 body: |
 104   bb.0:
 105     liveins: $sgpr0_sgpr1_sgpr2
 106     ; GCN-LABEL: name: trunc_sgpr_s96_to_s16
 107     ; GCN: liveins: $sgpr0_sgpr1_sgpr2
 108     ; GCN-NEXT: {{  $}}
 109     ; GCN-NEXT: [[COPY:%[0-9]+]]:sgpr_96 = COPY $sgpr0_sgpr1_sgpr2
 110     ; GCN-NEXT: [[COPY1:%[0-9]+]]:sreg_32 = COPY [[COPY]].sub0
 111     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 112     %0:sgpr(s96) = COPY $sgpr0_sgpr1_sgpr2
 113     %1:sgpr(s16) = G_TRUNC %0
 114     S_ENDPGM 0, implicit %1
 115 ...
 116 ---
 117
 118 name: trunc_sgpr_s96_to_s64
 119 legalized:       true
 120 regBankSelected: true
 121
 122 body: |
 123   bb.0:
 124     liveins: $sgpr0_sgpr1_sgpr2
 125     ; GCN-LABEL: name: trunc_sgpr_s96_to_s64
 126     ; GCN: liveins: $sgpr0_sgpr1_sgpr2
 127     ; GCN-NEXT: {{  $}}
 128     ; GCN-NEXT: [[COPY:%[0-9]+]]:sgpr_96 = COPY $sgpr0_sgpr1_sgpr2
 129     ; GCN-NEXT: [[COPY1:%[0-9]+]]:sreg_64 = COPY [[COPY]].sub0_sub1
 130     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 131     %0:sgpr(s96) = COPY $sgpr0_sgpr1_sgpr2
 132     %1:sgpr(s64) = G_TRUNC %0
 133     S_ENDPGM 0, implicit %1
 134 ...
 135 ---
 136
 137 name: trunc_sgpr_s128_to_s16
 138 legalized:       true
 139 regBankSelected: true
 140
 141 body: |
 142   bb.0:
 143     liveins: $sgpr0_sgpr1_sgpr2_sgpr3
 144     ; GCN-LABEL: name: trunc_sgpr_s128_to_s16
 145     ; GCN: liveins: $sgpr0_sgpr1_sgpr2_sgpr3
 146     ; GCN-NEXT: {{  $}}
 147     ; GCN-NEXT: [[COPY:%[0-9]+]]:sgpr_128 = COPY $sgpr0_sgpr1_sgpr2_sgpr3
 148     ; GCN-NEXT: [[COPY1:%[0-9]+]]:sreg_32 = COPY [[COPY]].sub0
 149     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 150     %0:sgpr(s128) = COPY $sgpr0_sgpr1_sgpr2_sgpr3
 151     %1:sgpr(s16) = G_TRUNC %0
 152     S_ENDPGM 0, implicit %1
 153 ...
 154 ---
 155
 156 name: trunc_sgpr_s128_to_s96
 157 legalized:       true
 158 regBankSelected: true
 159
 160 body: |
 161   bb.0:
 162     liveins: $sgpr0_sgpr1_sgpr2_sgpr3
 163     ; GCN-LABEL: name: trunc_sgpr_s128_to_s96
 164     ; GCN: liveins: $sgpr0_sgpr1_sgpr2_sgpr3
 165     ; GCN-NEXT: {{  $}}
 166     ; GCN-NEXT: [[COPY:%[0-9]+]]:sgpr_128 = COPY $sgpr0_sgpr1_sgpr2_sgpr3
 167     ; GCN-NEXT: [[COPY1:%[0-9]+]]:sgpr_96 = COPY [[COPY]].sub0_sub1_sub2
 168     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 169     %0:sgpr(s128) = COPY $sgpr0_sgpr1_sgpr2_sgpr3
 170     %1:sgpr(s96) = G_TRUNC %0
 171     S_ENDPGM 0, implicit %1
 172 ...
 173 ---
 174
 175 name: trunc_sgpr_s256_to_s128
 176 legalized:       true
 177 regBankSelected: true
 178
 179 body: |
 180   bb.0:
 181     liveins: $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7
 182     ; GCN-LABEL: name: trunc_sgpr_s256_to_s128
 183     ; GCN: liveins: $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7
 184     ; GCN-NEXT: {{  $}}
 185     ; GCN-NEXT: [[COPY:%[0-9]+]]:sgpr_256 = COPY $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7
 186     ; GCN-NEXT: [[COPY1:%[0-9]+]]:sgpr_128 = COPY [[COPY]].sub0_sub1_sub2_sub3
 187     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 188     %0:sgpr(s256) = COPY $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7
 189     %1:sgpr(s128) = G_TRUNC %0
 190     S_ENDPGM 0, implicit %1
 191 ...
 192 ---
 193
 194 name: trunc_sgpr_s512_to_s256
 195 legalized:       true
 196 regBankSelected: true
 197
 198 body: |
 199   bb.0:
 200     liveins: $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11_sgpr12_sgpr13_sgpr14_sgpr15
 201     ; GCN-LABEL: name: trunc_sgpr_s512_to_s256
 202     ; GCN: liveins: $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11_sgpr12_sgpr13_sgpr14_sgpr15
 203     ; GCN-NEXT: {{  $}}
 204     ; GCN-NEXT: [[COPY:%[0-9]+]]:sgpr_512 = COPY $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11_sgpr12_sgpr13_sgpr14_sgpr15
 205     ; GCN-NEXT: [[COPY1:%[0-9]+]]:sgpr_256 = COPY [[COPY]].sub0_sub1_sub2_sub3_sub4_sub5_sub6_sub7
 206     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 207     %0:sgpr(s512) = COPY $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11_sgpr12_sgpr13_sgpr14_sgpr15
 208     %1:sgpr(s256) = G_TRUNC %0
 209     S_ENDPGM 0, implicit %1
 210 ...
 211 ---
 212
 213 name: trunc_vgpr_s32_to_s1
 214 legalized:       true
 215 regBankSelected: true
 216
 217 body: |
 218   bb.0:
 219     liveins: $vgpr0
 220     ; GCN-LABEL: name: trunc_vgpr_s32_to_s1
 221     ; GCN: liveins: $vgpr0
 222     ; GCN-NEXT: {{  $}}
 223     ; GCN-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
 224     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY]]
 225     %0:vgpr(s32) = COPY $vgpr0
 226     %1:vgpr(s1) = G_TRUNC %0
 227     S_ENDPGM 0, implicit %1
 228 ...
 229 ---
 230
 231 name: trunc_vgpr_s32_to_s16
 232 legalized:       true
 233 regBankSelected: true
 234
 235 body: |
 236   bb.0:
 237     liveins: $vgpr0
 238     ; GCN-LABEL: name: trunc_vgpr_s32_to_s16
 239     ; GCN: liveins: $vgpr0
 240     ; GCN-NEXT: {{  $}}
 241     ; GCN-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
 242     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY]]
 243     %0:vgpr(s32) = COPY $vgpr0
 244     %1:vgpr(s16) = G_TRUNC %0
 245     S_ENDPGM 0, implicit %1
 246 ...
 247 ---
 248
 249 name: trunc_vgpr_s64_to_s32
 250 legalized:       true
 251 regBankSelected: true
 252
 253 body: |
 254   bb.0:
 255     liveins: $vgpr0_vgpr1
 256     ; GCN-LABEL: name: trunc_vgpr_s64_to_s32
 257     ; GCN: liveins: $vgpr0_vgpr1
 258     ; GCN-NEXT: {{  $}}
 259     ; GCN-NEXT: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
 260     ; GCN-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY [[COPY]].sub0
 261     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 262     %0:vgpr(s64) = COPY $vgpr0_vgpr1
 263     %1:vgpr(s32) = G_TRUNC %0
 264     S_ENDPGM 0, implicit %1
 265 ...
 266 ---
 267
 268 name: trunc_vgpr_s64_to_s16
 269 legalized:       true
 270 regBankSelected: true
 271
 272 body: |
 273   bb.0:
 274     liveins: $vgpr0_vgpr1
 275     ; GCN-LABEL: name: trunc_vgpr_s64_to_s16
 276     ; GCN: liveins: $vgpr0_vgpr1
 277     ; GCN-NEXT: {{  $}}
 278     ; GCN-NEXT: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
 279     ; GCN-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY [[COPY]].sub0
 280     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 281     %0:vgpr(s64) = COPY $vgpr0_vgpr1
 282     %1:vgpr(s16) = G_TRUNC %0
 283     S_ENDPGM 0, implicit %1
 284 ...
 285 ---
 286
 287 name: trunc_vgpr_s64_to_s1
 288 legalized:       true
 289 regBankSelected: true
 290
 291 body: |
 292   bb.0:
 293     liveins: $vgpr0_vgpr1
 294     ; GCN-LABEL: name: trunc_vgpr_s64_to_s1
 295     ; GCN: liveins: $vgpr0_vgpr1
 296     ; GCN-NEXT: {{  $}}
 297     ; GCN-NEXT: [[COPY:%[0-9]+]]:vreg_64 = COPY $vgpr0_vgpr1
 298     ; GCN-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY [[COPY]].sub0
 299     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 300     %0:vgpr(s64) = COPY $vgpr0_vgpr1
 301     %1:vgpr(s1) = G_TRUNC %0
 302     S_ENDPGM 0, implicit %1
 303 ...
 304 ---
 305
 306 name: trunc_vgpr_s96_to_s16
 307 legalized:       true
 308 regBankSelected: true
 309
 310 body: |
 311   bb.0:
 312     liveins: $vgpr0_vgpr1_vgpr2
 313     ; GCN-LABEL: name: trunc_vgpr_s96_to_s16
 314     ; GCN: liveins: $vgpr0_vgpr1_vgpr2
 315     ; GCN-NEXT: {{  $}}
 316     ; GCN-NEXT: [[COPY:%[0-9]+]]:vreg_96 = COPY $vgpr0_vgpr1_vgpr2
 317     ; GCN-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY [[COPY]].sub0
 318     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 319     %0:vgpr(s96) = COPY $vgpr0_vgpr1_vgpr2
 320     %1:vgpr(s16) = G_TRUNC %0
 321     S_ENDPGM 0, implicit %1
 322 ...
 323 ---
 324
 325 name: trunc_vgpr_s96_to_s64
 326 legalized:       true
 327 regBankSelected: true
 328
 329 body: |
 330   bb.0:
 331     liveins: $vgpr0_vgpr1_vgpr2
 332     ; GCN-LABEL: name: trunc_vgpr_s96_to_s64
 333     ; GCN: liveins: $vgpr0_vgpr1_vgpr2
 334     ; GCN-NEXT: {{  $}}
 335     ; GCN-NEXT: [[COPY:%[0-9]+]]:vreg_96 = COPY $vgpr0_vgpr1_vgpr2
 336     ; GCN-NEXT: [[COPY1:%[0-9]+]]:vreg_64 = COPY [[COPY]].sub0_sub1
 337     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 338     %0:vgpr(s96) = COPY $vgpr0_vgpr1_vgpr2
 339     %1:vgpr(s64) = G_TRUNC %0
 340     S_ENDPGM 0, implicit %1
 341 ...
 342 ---
 343
 344 name: trunc_vgpr_s128_to_s16
 345 legalized:       true
 346 regBankSelected: true
 347
 348 body: |
 349   bb.0:
 350     liveins: $vgpr0_vgpr1_vgpr2_vgpr3
 351     ; GCN-LABEL: name: trunc_vgpr_s128_to_s16
 352     ; GCN: liveins: $vgpr0_vgpr1_vgpr2_vgpr3
 353     ; GCN-NEXT: {{  $}}
 354     ; GCN-NEXT: [[COPY:%[0-9]+]]:vreg_128 = COPY $vgpr0_vgpr1_vgpr2_vgpr3
 355     ; GCN-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY [[COPY]].sub0
 356     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 357     %0:vgpr(s128) = COPY $vgpr0_vgpr1_vgpr2_vgpr3
 358     %1:vgpr(s16) = G_TRUNC %0
 359     S_ENDPGM 0, implicit %1
 360 ...
 361 ---
 362
 363 name: trunc_vgpr_s128_to_s96
 364 legalized:       true
 365 regBankSelected: true
 366
 367 body: |
 368   bb.0:
 369     liveins: $vgpr0_vgpr1_vgpr2_vgpr3
 370     ; GCN-LABEL: name: trunc_vgpr_s128_to_s96
 371     ; GCN: liveins: $vgpr0_vgpr1_vgpr2_vgpr3
 372     ; GCN-NEXT: {{  $}}
 373     ; GCN-NEXT: [[COPY:%[0-9]+]]:vreg_128 = COPY $vgpr0_vgpr1_vgpr2_vgpr3
 374     ; GCN-NEXT: [[COPY1:%[0-9]+]]:vreg_96 = COPY [[COPY]].sub0_sub1_sub2
 375     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 376     %0:vgpr(s128) = COPY $vgpr0_vgpr1_vgpr2_vgpr3
 377     %1:vgpr(s96) = G_TRUNC %0
 378     S_ENDPGM 0, implicit %1
 379 ...
 380 ---
 381
 382 name: trunc_vgpr_s256_to_s128
 383 legalized:       true
 384 regBankSelected: true
 385
 386 body: |
 387   bb.0:
 388     liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7
 389     ; GCN-LABEL: name: trunc_vgpr_s256_to_s128
 390     ; GCN: liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7
 391     ; GCN-NEXT: {{  $}}
 392     ; GCN-NEXT: [[COPY:%[0-9]+]]:vreg_256 = COPY $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7
 393     ; GCN-NEXT: [[COPY1:%[0-9]+]]:vreg_128 = COPY [[COPY]].sub0_sub1_sub2_sub3
 394     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 395     %0:vgpr(s256) = COPY $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7
 396     %1:vgpr(s128) = G_TRUNC %0
 397     S_ENDPGM 0, implicit %1
 398 ...
 399 ---
 400
 401 name: trunc_vgpr_s512_to_s256
 402 legalized:       true
 403 regBankSelected: true
 404
 405 body: |
 406   bb.0:
 407     liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15
 408     ; GCN-LABEL: name: trunc_vgpr_s512_to_s256
 409     ; GCN: liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15
 410     ; GCN-NEXT: {{  $}}
 411     ; GCN-NEXT: [[COPY:%[0-9]+]]:vreg_512 = COPY $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15
 412     ; GCN-NEXT: [[COPY1:%[0-9]+]]:vreg_256 = COPY [[COPY]].sub0_sub1_sub2_sub3_sub4_sub5_sub6_sub7
 413     ; GCN-NEXT: S_ENDPGM 0, implicit [[COPY1]]
 414     %0:vgpr(s512) = COPY $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15
 415     %1:vgpr(s256) = G_TRUNC %0
 416     S_ENDPGM 0, implicit %1
 417 ...
 418
 419 ---
 420
 421 name: trunc_sgpr_s32_to_s1_use
 422 legalized:       true
 423 regBankSelected: true
 424
 425 body: |
 426   bb.0:
 427     liveins: $sgpr0, $sgpr1
 428     ; GCN-LABEL: name: trunc_sgpr_s32_to_s1_use
 429     ; GCN: liveins: $sgpr0, $sgpr1
 430     ; GCN-NEXT: {{  $}}
 431     ; GCN-NEXT: [[COPY:%[0-9]+]]:sreg_32 = COPY $sgpr0
 432     ; GCN-NEXT: [[COPY1:%[0-9]+]]:sreg_32 = COPY $sgpr1
 433     ; GCN-NEXT: $scc = COPY [[COPY]]
 434     ; GCN-NEXT: [[S_CSELECT_B32_:%[0-9]+]]:sreg_32 = S_CSELECT_B32 [[COPY]], [[COPY1]], implicit $scc
 435     ; GCN-NEXT: S_ENDPGM 0, implicit [[S_CSELECT_B32_]]
 436     %0:sgpr(s32) = COPY $sgpr0
 437     %1:sgpr(s32) = COPY $sgpr1
 438     %2:sgpr(s1) = G_TRUNC %0
 439     %3:sgpr(s32) = G_SELECT %2, %0, %1
 440     S_ENDPGM 0, implicit %3
 441 ...