# RUN: llc -mtriple amdgcn-amd-amdhsa -run-pass=amdgpu-postlegalizer-combiner -verify-machineinstrs %s -o - | FileCheck %s

---
name:            merge_unmerge
alignment:       4
legalized:       true
liveins:
body:             |
  bb.1.entry:
      liveins: $vgpr0_vgpr1

        ; CHECK-LABEL: name: merge_unmerge
        ; CHECK: liveins: $vgpr0_vgpr1
        ; CHECK-NEXT: {{  $}}
        ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s64) = COPY $vgpr0_vgpr1
        ; CHECK-NEXT: $vgpr0_vgpr1 = COPY [[COPY]](s64)
        ; CHECK-NEXT: SI_RETURN implicit $vgpr0_vgpr1
        %0:_(s64) = COPY $vgpr0_vgpr1
        %a:_(s32), %b:_(s32) = G_UNMERGE_VALUES %0
        %merge:_(s64) = G_MERGE_VALUES %a, %b
        $vgpr0_vgpr1 = COPY %merge(s64)
        SI_RETURN implicit $vgpr0_vgpr1

...
---
name:            merge_unmerge_vector_type
alignment:       4
legalized:       true
liveins:
body:             |
  bb.1.entry:
    liveins: $vgpr0_vgpr1

    ; CHECK-LABEL: name: merge_unmerge
    ; CHECK: liveins: $vgpr0_vgpr1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<2 x s32>) = COPY $vgpr0_vgpr1
    ; CHECK-NEXT: [[BITCAST:%[a-z]+]]:_(s64) = G_BITCAST [[COPY]](<2 x s32>) 
    ; CHECK-NEXT: $vgpr0_vgpr1 = COPY [[BITCAST]](s64)
    ; CHECK-NEXT: SI_RETURN implicit $vgpr0_vgpr1
    %0:_(<2 x s32>) = COPY $vgpr0_vgpr1
    %a:_(s32), %b:_(s32) = G_UNMERGE_VALUES %0:_(<2 x s32>)
    %merge:_(s64) = G_MERGE_VALUES %a:_(s32), %b:_(s32)
    $vgpr0_vgpr1 = COPY %merge(s64)
    SI_RETURN implicit $vgpr0_vgpr1

...