llvm/llvm/test/CodeGen/AMDGPU/hazard-pseudo-machineinstrs.mir

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

# WAVE_BARRIER and SI_MASKED_UNREACHABLE ect. are not really instructions.  To
# fix the hazard (m0 def followed by V_INTERP), the compiler should insert a
# S_NOP.

---
name: hazard_wave_barrier
tracksRegLiveness: true
body: |
  bb.0:
    liveins: $sgpr0

    ; GCN-LABEL: name: hazard_wave_barrier
    ; GCN: liveins: $sgpr0
    ; GCN-NEXT: {{  $}}
    ; GCN-NEXT: $m0 = S_MOV_B32 killed renamable $sgpr0
    ; GCN-NEXT: WAVE_BARRIER
    ; GCN-NEXT: S_NOP 0
    ; GCN-NEXT: renamable $vgpr0 = V_INTERP_MOV_F32 2, 0, 0, implicit $mode, implicit $m0, implicit $exec
    ; GCN-NEXT: renamable $sgpr1 = S_MOV_B32 0
    ; GCN-NEXT: S_ENDPGM 0
    $m0 = S_MOV_B32 killed renamable $sgpr0
    WAVE_BARRIER
    renamable $vgpr0 = V_INTERP_MOV_F32 2, 0, 0, implicit $mode, implicit $m0, implicit $exec
    renamable $sgpr1 = S_MOV_B32 0
    S_ENDPGM 0

...

---
name: hazard-masked-unreachable
tracksRegLiveness: true
body: |
  ; GCN-LABEL: name: hazard-masked-unreachable
  ; GCN: bb.0:
  ; GCN-NEXT:   successors: %bb.1(0x80000000)
  ; GCN-NEXT:   liveins: $sgpr0
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   $m0 = S_MOV_B32 killed renamable $sgpr0
  ; GCN-NEXT:   SI_MASKED_UNREACHABLE
  ; GCN-NEXT:   S_NOP 0
  ; GCN-NEXT:   renamable $vgpr0 = V_INTERP_MOV_F32 2, 0, 0, implicit $mode, implicit $m0, implicit $exec
  ; GCN-NEXT:   renamable $sgpr1 = S_MOV_B32 0
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.1:
  ; GCN-NEXT:   S_ENDPGM 0
  bb.0:
    liveins: $sgpr0

    $m0 = S_MOV_B32 killed renamable $sgpr0
    SI_MASKED_UNREACHABLE
    renamable $vgpr0 = V_INTERP_MOV_F32 2, 0, 0, implicit $mode, implicit $m0, implicit $exec
    renamable $sgpr1 = S_MOV_B32 0
  bb.1:
    S_ENDPGM 0
...

---
name: hazard_sched_barrier
tracksRegLiveness: true
body: |
  bb.0:
    liveins: $sgpr0

    ; GCN-LABEL: name: hazard_sched_barrier
    ; GCN: liveins: $sgpr0
    ; GCN-NEXT: {{  $}}
    ; GCN-NEXT: $m0 = S_MOV_B32 killed renamable $sgpr0
    ; GCN-NEXT: SCHED_BARRIER 0
    ; GCN-NEXT: S_NOP 0
    ; GCN-NEXT: renamable $vgpr0 = V_INTERP_MOV_F32 2, 0, 0, implicit $mode, implicit $m0, implicit $exec
    ; GCN-NEXT: renamable $sgpr1 = S_MOV_B32 0
    ; GCN-NEXT: S_ENDPGM 0
    $m0 = S_MOV_B32 killed renamable $sgpr0
    SCHED_BARRIER 0
    renamable $vgpr0 = V_INTERP_MOV_F32 2, 0, 0, implicit $mode, implicit $m0, implicit $exec
    renamable $sgpr1 = S_MOV_B32 0
    S_ENDPGM 0

...