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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
# RUN: llc -mtriple=amdgcn -mcpu=gfx1100 -run-pass=postra-machine-sink -verify-machineinstrs -o - %s | FileCheck %s
# RUN: llc -mtriple=amdgcn -mcpu=gfx1100 -passes='postra-machine-sink' -o - %s | FileCheck %s
#
# In the example, the ` $sgpr4 = COPY $sgpr2` was incorrectly sunk into bb.3. This happened because we did not update
# register uses when we found that `$sgpr2 = COPY $sgpr3` should not be sunk because of conflict with the successor's
# prologue instructions.
---
name: update_dependency_correctly
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: update_dependency_correctly
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $sgpr0, $sgpr3, $sgpr2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vgpr1 = IMPLICIT_DEF
; CHECK-NEXT: renamable $sgpr4 = COPY $sgpr2
; CHECK-NEXT: renamable $sgpr2 = COPY $sgpr3
; CHECK-NEXT: $vgpr1 = SI_SPILL_S32_TO_VGPR $sgpr0, 0, $vgpr1
; CHECK-NEXT: $sgpr1 = S_AND_SAVEEXEC_B32 $sgpr0, implicit-def $exec, implicit-def $scc, implicit $exec
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: S_ENDPGM 0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: liveins: $sgpr0, $sgpr2, $sgpr4, $vgpr1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $sgpr3 = SI_RESTORE_S32_FROM_VGPR $vgpr1, 0
; CHECK-NEXT: renamable $sgpr0_sgpr1 = S_GETPC_B64_pseudo
; CHECK-NEXT: renamable $sgpr5 = COPY $sgpr1
; CHECK-NEXT: renamable $sgpr0_sgpr1 = S_LOAD_DWORDX2_IMM renamable $sgpr4_sgpr5, 32, 0
; CHECK-NEXT: S_BRANCH %bb.1
bb.0:
successors: %bb.3(0x40000000), %bb.2(0x40000000)
liveins: $sgpr0, $sgpr3, $sgpr2
$vgpr1 = IMPLICIT_DEF
renamable $sgpr4 = COPY $sgpr2
renamable $sgpr2 = COPY $sgpr3
$vgpr1 = SI_SPILL_S32_TO_VGPR $sgpr0, 0, $vgpr1
$sgpr1 = S_AND_SAVEEXEC_B32 $sgpr0, implicit-def $exec, implicit-def $scc, implicit $exec
S_CBRANCH_EXECZ %bb.2, implicit $exec
S_BRANCH %bb.3
bb.2:
S_ENDPGM 0
bb.3:
successors: %bb.2(0x40000000)
liveins: $sgpr0, $sgpr2, $sgpr4, $vgpr1
$sgpr3 = SI_RESTORE_S32_FROM_VGPR $vgpr1, 0
renamable $sgpr0_sgpr1 = S_GETPC_B64_pseudo
renamable $sgpr5 = COPY $sgpr1
renamable $sgpr0_sgpr1 = S_LOAD_DWORDX2_IMM renamable $sgpr4_sgpr5, 32, 0
S_BRANCH %bb.2
...
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