test/CodeGen/MIR/AMDGPU/mir-canon-multi.mir

# RUN: llc -o -  -march=amdgcn  -run-pass mir-canonicalizer  -x mir %s | FileCheck %s

# CHECK: %namedVReg1352:vgpr_32 = COPY %namedVReg4353
# CHECK: %namedVReg1359:vgpr_32 = COPY %namedVReg1362
# CHECK: %namedVReg1360:vgpr_32 = COPY %namedVReg1363
...
---
name: foo
body:             |
  bb.0:
    %10:sreg_32_xm0 = S_MOV_B32 61440
    %11:sreg_32_xm0 = S_MOV_B32 0
    %3:vgpr_32 = COPY $vgpr0

    %vreg123_0:vgpr_32 = COPY %3
    %0:sgpr_64 = COPY $sgpr0_sgpr1
    %vreg123_1:vgpr_32 = COPY %11
    %27:vreg_64 = REG_SEQUENCE %vreg123_0, %subreg.sub0, %vreg123_1, %subreg.sub1
    %4:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 9, 0
    %vreg123_2:vgpr_32 = COPY %4
    %5:sreg_64_xexec = S_LOAD_DWORDX2_IMM %0, 11, 0
    %vreg123_3:vgpr_32 = COPY %5
    %16:sgpr_128 = REG_SEQUENCE killed %vreg123_0, %subreg.sub0, %vreg123_1, %subreg.sub1, %vreg123_2, %subreg.sub2, %vreg123_3, %subreg.sub3

    BUFFER_STORE_DWORD_ADDR64 %vreg123_1, %27, killed %16, 0, 0, 0, 0, 0, implicit $exec
    S_ENDPGM

...