1*e33e087aSRuiling, Song# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5 2*e33e087aSRuiling, Song# RUN: llc -mtriple=amdgcn -mcpu=gfx1100 -run-pass=postra-machine-sink -verify-machineinstrs -o - %s | FileCheck %s 3*e33e087aSRuiling, Song# 4*e33e087aSRuiling, Song# In the example, the ` $sgpr4 = COPY $sgpr2` was incorrectly sunk into bb.3. This happened because we did not update 5*e33e087aSRuiling, Song# register uses when we found that `$sgpr2 = COPY $sgpr3` should not be sunk because of conflict with the successor's 6*e33e087aSRuiling, Song# prologue instructions. 7*e33e087aSRuiling, Song--- 8*e33e087aSRuiling, Songname: update_dependency_correctly 9*e33e087aSRuiling, SongtracksRegLiveness: true 10*e33e087aSRuiling, Songbody: | 11*e33e087aSRuiling, Song ; CHECK-LABEL: name: update_dependency_correctly 12*e33e087aSRuiling, Song ; CHECK: bb.0: 13*e33e087aSRuiling, Song ; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000) 14*e33e087aSRuiling, Song ; CHECK-NEXT: liveins: $sgpr0, $sgpr3, $sgpr2 15*e33e087aSRuiling, Song ; CHECK-NEXT: {{ $}} 16*e33e087aSRuiling, Song ; CHECK-NEXT: $vgpr1 = IMPLICIT_DEF 17*e33e087aSRuiling, Song ; CHECK-NEXT: renamable $sgpr4 = COPY $sgpr2 18*e33e087aSRuiling, Song ; CHECK-NEXT: renamable $sgpr2 = COPY $sgpr3 19*e33e087aSRuiling, Song ; CHECK-NEXT: $vgpr1 = SI_SPILL_S32_TO_VGPR $sgpr0, 0, $vgpr1 20*e33e087aSRuiling, Song ; CHECK-NEXT: $sgpr1 = S_AND_SAVEEXEC_B32 $sgpr0, implicit-def $exec, implicit-def $scc, implicit $exec 21*e33e087aSRuiling, Song ; CHECK-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec 22*e33e087aSRuiling, Song ; CHECK-NEXT: S_BRANCH %bb.2 23*e33e087aSRuiling, Song ; CHECK-NEXT: {{ $}} 24*e33e087aSRuiling, Song ; CHECK-NEXT: bb.1: 25*e33e087aSRuiling, Song ; CHECK-NEXT: S_ENDPGM 0 26*e33e087aSRuiling, Song ; CHECK-NEXT: {{ $}} 27*e33e087aSRuiling, Song ; CHECK-NEXT: bb.2: 28*e33e087aSRuiling, Song ; CHECK-NEXT: successors: %bb.1(0x80000000) 29*e33e087aSRuiling, Song ; CHECK-NEXT: liveins: $sgpr0, $sgpr2, $sgpr4, $vgpr1 30*e33e087aSRuiling, Song ; CHECK-NEXT: {{ $}} 31*e33e087aSRuiling, Song ; CHECK-NEXT: $sgpr3 = SI_RESTORE_S32_FROM_VGPR $vgpr1, 0 32*e33e087aSRuiling, Song ; CHECK-NEXT: renamable $sgpr0_sgpr1 = S_GETPC_B64_pseudo 33*e33e087aSRuiling, Song ; CHECK-NEXT: renamable $sgpr5 = COPY $sgpr1 34*e33e087aSRuiling, Song ; CHECK-NEXT: renamable $sgpr0_sgpr1 = S_LOAD_DWORDX2_IMM renamable $sgpr4_sgpr5, 32, 0 35*e33e087aSRuiling, Song ; CHECK-NEXT: S_BRANCH %bb.1 36*e33e087aSRuiling, Song bb.0: 37*e33e087aSRuiling, Song successors: %bb.3(0x40000000), %bb.2(0x40000000) 38*e33e087aSRuiling, Song liveins: $sgpr0, $sgpr3, $sgpr2 39*e33e087aSRuiling, Song 40*e33e087aSRuiling, Song $vgpr1 = IMPLICIT_DEF 41*e33e087aSRuiling, Song 42*e33e087aSRuiling, Song renamable $sgpr4 = COPY $sgpr2 43*e33e087aSRuiling, Song renamable $sgpr2 = COPY $sgpr3 44*e33e087aSRuiling, Song 45*e33e087aSRuiling, Song $vgpr1 = SI_SPILL_S32_TO_VGPR $sgpr0, 0, $vgpr1 46*e33e087aSRuiling, Song 47*e33e087aSRuiling, Song $sgpr1 = S_AND_SAVEEXEC_B32 $sgpr0, implicit-def $exec, implicit-def $scc, implicit $exec 48*e33e087aSRuiling, Song S_CBRANCH_EXECZ %bb.2, implicit $exec 49*e33e087aSRuiling, Song S_BRANCH %bb.3 50*e33e087aSRuiling, Song 51*e33e087aSRuiling, Song bb.2: 52*e33e087aSRuiling, Song S_ENDPGM 0 53*e33e087aSRuiling, Song 54*e33e087aSRuiling, Song bb.3: 55*e33e087aSRuiling, Song successors: %bb.2(0x40000000) 56*e33e087aSRuiling, Song liveins: $sgpr0, $sgpr2, $sgpr4, $vgpr1 57*e33e087aSRuiling, Song 58*e33e087aSRuiling, Song $sgpr3 = SI_RESTORE_S32_FROM_VGPR $vgpr1, 0 59*e33e087aSRuiling, Song 60*e33e087aSRuiling, Song renamable $sgpr0_sgpr1 = S_GETPC_B64_pseudo 61*e33e087aSRuiling, Song renamable $sgpr5 = COPY $sgpr1 62*e33e087aSRuiling, Song renamable $sgpr0_sgpr1 = S_LOAD_DWORDX2_IMM renamable $sgpr4_sgpr5, 32, 0 63*e33e087aSRuiling, Song 64*e33e087aSRuiling, Song S_BRANCH %bb.2 65*e33e087aSRuiling, Song 66*e33e087aSRuiling, Song... 67