postlegalizercombiner-select.mir
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=amdgcn -run-pass=amdgpu-postlegalizer-combiner -verify-machineinstrs %s -o - | FileCheck -check-prefix=GCN %s
---
name: select_from_different_results_of_unmerge_values
tracksRegLiveness: true
body: |
bb.0:
; GCN-LABEL: name: select_from_different_results_of_unmerge_values
; GCN: [[DEF:%[0-9]+]]:_(<2 x s32>) = G_IMPLICIT_DEF
; GCN: [[DEF1:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
; GCN: [[UV:%[0-9]+]]:_(s32), [[UV1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[DEF]](<2 x s32>)
; GCN: [[SELECT:%[0-9]+]]:_(s32) = G_SELECT [[DEF1]](s1), [[UV]], [[UV1]]
; GCN: $vgpr0 = COPY [[SELECT]](s32)
; GCN: SI_RETURN_TO_EPILOG $vgpr0
%2:_(<2 x s32>) = G_IMPLICIT_DEF
%4:_(s1) = G_IMPLICIT_DEF
%0:_(s32), %1:_(s32) = G_UNMERGE_VALUES %2:_(<2 x s32>)
%3:_(s32) = G_SELECT %4:_(s1), %0:_, %1:_
$vgpr0 = COPY %3
SI_RETURN_TO_EPILOG $vgpr0
...
---
name: select_from_same_results_of_unmerge_values
tracksRegLiveness: true
body: |
bb.0:
; GCN-LABEL: name: select_from_same_results_of_unmerge_values
; GCN: [[DEF:%[0-9]+]]:_(<2 x s32>) = G_IMPLICIT_DEF
; GCN: [[UV:%[0-9]+]]:_(s32), [[UV1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[DEF]](<2 x s32>)
; GCN: $vgpr0 = COPY [[UV]](s32)
; GCN: SI_RETURN_TO_EPILOG $vgpr0
%2:_(<2 x s32>) = G_IMPLICIT_DEF
%4:_(s1) = G_IMPLICIT_DEF
%0:_(s32), %1:_(s32) = G_UNMERGE_VALUES %2:_(<2 x s32>)
%3:_(s32) = G_SELECT %4:_(s1), %0:_, %0:_
$vgpr0 = COPY %3
SI_RETURN_TO_EPILOG $vgpr0
...