test/CodeGen/AMDGPU/fast-ra-kills-vcc.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -verify-machineinstrs -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -run-pass=regallocfast -o - %s | FileCheck %s

# Make sure incorrect kills aren't emitted on vcc

---
name:            foo
tracksRegLiveness: true
machineFunctionInfo:
  isEntryFunction: true
  scratchRSrcReg:  '$sgpr0_sgpr1_sgpr2_sgpr3'
  stackPtrOffsetReg: '$sgpr32'
body:             |
  bb.0:
    liveins: $vgpr0

    ; CHECK-LABEL: name: foo
    ; CHECK: liveins: $vgpr0
    ; CHECK: V_CMP_NE_U32_e32 0, killed $vgpr0, implicit-def $vcc, implicit $exec
    ; CHECK: $sgpr4_sgpr5 = COPY $vcc
    ; CHECK: renamable $vgpr0 = V_CNDMASK_B32_e64 0, -1, 0, 3, killed $vcc, implicit $exec
    ; CHECK: S_ENDPGM 0, implicit killed $vgpr0, implicit killed $sgpr4_sgpr5
    %0:vgpr_32 = COPY $vgpr0
    V_CMP_NE_U32_e32 0, %0, implicit-def $vcc, implicit $exec
    $sgpr4_sgpr5 = COPY $vcc
    %1:sreg_64_xexec = COPY $vcc
    %2:vgpr_32 = V_CNDMASK_B32_e64 0, -1, 0, 3, %1, implicit $exec
    $vgpr0 = COPY %2
    S_ENDPGM 0, implicit $vgpr0, implicit $sgpr4_sgpr5

...

# This would hit "Unexpected reg unit state" assert.
---
name:            bar
tracksRegLiveness: true
machineFunctionInfo:
  isEntryFunction: true
  scratchRSrcReg:  '$sgpr0_sgpr1_sgpr2_sgpr3'
  stackPtrOffsetReg: '$sgpr32'
body:             |
  bb.0:
    liveins: $vgpr0

    ; CHECK-LABEL: name: bar
    ; CHECK: liveins: $vgpr0
    ; CHECK: V_CMP_NE_U32_e32 0, killed $vgpr0, implicit-def $vcc, implicit $exec
    ; CHECK: renamable $sgpr4_sgpr5 = COPY $vcc
    ; CHECK: SI_SPILL_S64_SAVE $sgpr4_sgpr5, %stack.0, implicit $exec, implicit $sgpr32 :: (store 8 into %stack.0, align 4, addrspace 5)
    ; CHECK: renamable $sgpr4_sgpr5 = COPY $vcc
    ; CHECK: $vcc = SI_SPILL_S64_RESTORE %stack.0, implicit $exec, implicit $sgpr32 :: (load 8 from %stack.0, align 4, addrspace 5)
    ; CHECK: renamable $vgpr0 = V_CNDMASK_B32_e64 0, -1, 0, 3, killed $sgpr4_sgpr5, implicit $exec
    ; CHECK: S_ENDPGM 0, implicit killed $vgpr0, implicit killed renamable $vcc
    %0:vgpr_32 = COPY $vgpr0
    V_CMP_NE_U32_e32 0, %0, implicit-def $vcc, implicit $exec
    %3:sreg_64_xexec = COPY $vcc
    %1:sreg_64_xexec = COPY $vcc
    %2:vgpr_32 = V_CNDMASK_B32_e64 0, -1, 0, 3, %1, implicit $exec
    $vgpr0 = COPY %2
    S_ENDPGM 0, implicit $vgpr0, implicit %3

...