test/CodeGen/AMDGPU/valu-mask-write-hazard.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=amdgcn -mcpu=gfx1100 -mattr=+wavefrontsize64 -verify-machineinstrs -run-pass post-RA-hazard-rec -o - %s | FileCheck -check-prefix=GCN %s

--- |
  @mem = internal unnamed_addr addrspace(4) constant [4 x <4 x i32>] [<4 x i32> <i32 0, i32 0, i32 0, i32 0>, <4 x i32> <i32 0, i32 0, i32 0, i32 0>, <4 x i32> <i32 0, i32 0, i32 0, i32 0>, <4 x i32> <i32 0, i32 0, i32 0, i32 0>]

  define amdgpu_gs void @mask_hazard_getpc1() { ret void }
  define amdgpu_gs void @mask_hazard_getpc2() { ret void }
  define amdgpu_gs void @mask_hazard_vcc1() { ret void }
  define amdgpu_gs void @mask_hazard_vcc2() { ret void }
  define amdgpu_gs void @mask_hazard_cndmask_dpp1() { ret void }
  define amdgpu_gs void @mask_hazard_cndmask_dpp2() { ret void }
  define amdgpu_gs void @mask_hazard_cndmask_dpp3() { ret void }
  define amdgpu_gs void @mask_hazard_cndmask_dpp4() { ret void }
  define amdgpu_gs void @mask_hazard_addc1() { ret void }
  define amdgpu_gs void @mask_hazard_addc2() { ret void }
  define amdgpu_gs void @mask_hazard_addc3() { ret void }
  define amdgpu_gs void @mask_hazard_addc4() { ret void }
  define amdgpu_gs void @mask_hazard_subb1() { ret void }
  define amdgpu_gs void @mask_hazard_subb2() { ret void }
  define amdgpu_gs void @mask_hazard_subb3() { ret void }
  define amdgpu_gs void @mask_hazard_subb4() { ret void }
  define amdgpu_gs void @mask_hazard_subbrev1() { ret void }
  define amdgpu_gs void @mask_hazard_subbrev2() { ret void }
  define amdgpu_gs void @mask_hazard_subbrev3() { ret void }
  define amdgpu_gs void @mask_hazard_subbrev4() { ret void }
  define amdgpu_gs void @mask_hazard_div_fmas_f32() { ret void }
  define amdgpu_gs void @mask_hazard_div_fmas_f64() { ret void }
  define amdgpu_gs void @mask_hazard_subreg1() { ret void }
  define amdgpu_gs void @mask_hazard_subreg2() { ret void }
  define amdgpu_gs void @mask_hazard_subreg3() { ret void }
  define amdgpu_gs void @mask_hazard_subreg4() { ret void }
  define amdgpu_gs void @mask_hazard_subreg5() { ret void }
  define amdgpu_gs void @mask_hazard_waitcnt() { ret void }
  define amdgpu_gs void @mask_hazard_gap1() { ret void }
  define amdgpu_gs void @mask_hazard_gap2() { ret void }
  define amdgpu_gs void @mask_hazard_gap3() { ret void }
  define amdgpu_gs void @mask_hazard_no_hazard1() { ret void }
  define amdgpu_gs void @mask_hazard_no_hazard2() { ret void }
  define amdgpu_gs void @mask_hazard_no_hazard3() { ret void }
...

---
name:            mask_hazard_getpc1
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_getpc1
    ; GCN: $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr0_sgpr1, implicit $exec
    ; GCN-NEXT: $sgpr0_sgpr1 = S_GETPC_B64
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: $sgpr0 = S_ADD_U32 $sgpr0, 0, implicit-def $scc
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr0_sgpr1, implicit $exec
    $sgpr0_sgpr1 = S_GETPC_B64
    $sgpr0 = S_ADD_U32 $sgpr0, 0, implicit-def $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_getpc2
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_getpc2
    ; GCN: $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr0_sgpr1, implicit $exec
    ; GCN-NEXT: BUNDLE implicit-def $sgpr0_sgpr1 {
    ; GCN-NEXT:   $sgpr0_sgpr1 = S_GETPC_B64
    ; GCN-NEXT:   S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT:   $sgpr0 = S_ADD_U32 $sgpr0, target-flags(amdgpu-rel32-lo) @mem + 8, implicit-def $scc
    ; GCN-NEXT:   $sgpr1 = S_ADDC_U32 $sgpr1, target-flags(amdgpu-rel32-lo) @mem + 16, implicit-def $scc, implicit $scc
    ; GCN-NEXT: }
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr0_sgpr1, implicit $exec
    BUNDLE implicit-def $sgpr0_sgpr1 {
      $sgpr0_sgpr1 = S_GETPC_B64
      $sgpr0 = S_ADD_U32 $sgpr0, target-flags(amdgpu-rel32-lo) @mem + 4, implicit-def $scc
      $sgpr1 = S_ADDC_U32 $sgpr1, target-flags(amdgpu-rel32-lo) @mem + 12, implicit-def $scc, implicit $scc
    }
    S_ENDPGM 0
...

---
name:            mask_hazard_vcc1
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_vcc1
    ; GCN: $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, implicit $exec
    ; GCN-NEXT: $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, implicit $exec
    $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_vcc2
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_vcc2
    ; GCN: $vgpr1 = V_CNDMASK_B32_e32 $vgpr1, $vgpr2, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e32 $vgpr1, $vgpr2, implicit $vcc, implicit $exec
    $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_cndmask_dpp1
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_cndmask_dpp1
    ; GCN: $vgpr0 = V_CNDMASK_B32_dpp $vgpr0, 0, $vgpr1, 0, $vgpr2, 1, 15, 15, 1, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr0 = V_CNDMASK_B32_dpp $vgpr0, 0, $vgpr1, 0, $vgpr2, 1, 15, 15, 1, implicit $vcc, implicit $exec
    $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_cndmask_dpp2
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_cndmask_dpp2
    ; GCN: $vgpr0 = V_CNDMASK_B32_e64_dpp $vgpr0, 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, 1, 15, 15, 1, implicit $exec
    ; GCN-NEXT: $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr0 = V_CNDMASK_B32_e64_dpp $vgpr0, 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, 1, 15, 15, 1, implicit $exec
    $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_cndmask_dpp4
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_cndmask_dpp4
    ; GCN: $vgpr0 = V_CNDMASK_B16_e64_dpp $vgpr0, 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, 1, 15, 15, 1, implicit $exec
    ; GCN-NEXT: $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr0 = V_CNDMASK_B16_e64_dpp $vgpr0, 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, 1, 15, 15, 1, implicit $exec
    $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_addc1
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_addc1
    ; GCN: $vgpr1, $vcc = V_ADDC_U32_e64 0, $vgpr1, $sgpr2_sgpr3, 0, implicit $exec
    ; GCN-NEXT: $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1, $vcc = V_ADDC_U32_e64 0, $vgpr1, $sgpr2_sgpr3, 0, implicit $exec
    $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_addc2
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_addc2
    ; GCN: $vgpr1 = V_ADDC_U32_e32 0, $vgpr1, implicit-def $vcc, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_ADDC_U32_e32 0, $vgpr1, implicit-def $vcc, implicit $vcc, implicit $exec
    $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_addc3
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_addc3
    ; GCN: $vgpr0 = V_ADDC_U32_dpp $vgpr0, $vgpr1, $vgpr2, 1, 15, 15, 1, implicit-def $vcc, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr0 = V_ADDC_U32_dpp $vgpr0, $vgpr1, $vgpr2, 1, 15, 15, 1, implicit-def $vcc, implicit $vcc, implicit $exec
    $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_addc4
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_addc4
    ; GCN: $vgpr0, $sgpr2_sgpr3 = V_ADDC_U32_e64_dpp $vgpr0, $vgpr1, $vgpr2, $sgpr2_sgpr3, 0, 1, 15, 15, 1, implicit $exec
    ; GCN-NEXT: $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr0, $sgpr2_sgpr3 = V_ADDC_U32_e64_dpp $vgpr0, $vgpr1, $vgpr2, $sgpr2_sgpr3, 0, 1, 15, 15, 1, implicit $exec
    $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_subb1
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subb1
    ; GCN: $vgpr1, $vcc = V_SUBB_U32_e64 0, $vgpr1, $sgpr2_sgpr3, 0, implicit $exec
    ; GCN-NEXT: $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1, $vcc = V_SUBB_U32_e64 0, $vgpr1, $sgpr2_sgpr3, 0, implicit $exec
    $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_subb2
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subb2
    ; GCN: $vgpr1 = V_SUBB_U32_e32 0, $vgpr1, implicit-def $vcc, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_SUBB_U32_e32 0, $vgpr1, implicit-def $vcc, implicit $vcc, implicit $exec
    $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_subb3
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subb3
    ; GCN: $vgpr0 = V_SUBB_U32_dpp $vgpr0, $vgpr1, $vgpr2, 1, 15, 15, 1, implicit-def $vcc, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr0 = V_SUBB_U32_dpp $vgpr0, $vgpr1, $vgpr2, 1, 15, 15, 1, implicit-def $vcc, implicit $vcc, implicit $exec
    $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_subb4
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subb4
    ; GCN: $vgpr0, $sgpr2_sgpr3 = V_SUBB_U32_e64_dpp $vgpr0, $vgpr1, $vgpr2, $sgpr2_sgpr3, 0, 1, 15, 15, 1, implicit $exec
    ; GCN-NEXT: $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr0, $sgpr2_sgpr3 = V_SUBB_U32_e64_dpp $vgpr0, $vgpr1, $vgpr2, $sgpr2_sgpr3, 0, 1, 15, 15, 1, implicit $exec
    $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_subbrev1
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subbrev1
    ; GCN: $vgpr1, $vcc = V_SUBBREV_U32_e64 0, $vgpr1, $sgpr2_sgpr3, 0, implicit $exec
    ; GCN-NEXT: $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1, $vcc = V_SUBBREV_U32_e64 0, $vgpr1, $sgpr2_sgpr3, 0, implicit $exec
    $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_subbrev2
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subbrev2
    ; GCN: $vgpr1 = V_SUBBREV_U32_e32 0, $vgpr1, implicit-def $vcc, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_SUBBREV_U32_e32 0, $vgpr1, implicit-def $vcc, implicit $vcc, implicit $exec
    $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_subbrev3
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subbrev3
    ; GCN: $vgpr0 = V_SUBBREV_U32_dpp $vgpr0, $vgpr1, $vgpr2, 1, 15, 15, 1, implicit-def $vcc, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr0 = V_SUBBREV_U32_dpp $vgpr0, $vgpr1, $vgpr2, 1, 15, 15, 1, implicit-def $vcc, implicit $vcc, implicit $exec
    $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_subbrev4
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subbrev4
    ; GCN: $vgpr0, $sgpr2_sgpr3 = V_SUBBREV_U32_e64_dpp $vgpr0, $vgpr1, $vgpr2, $sgpr2_sgpr3, 0, 1, 15, 15, 1, implicit $exec
    ; GCN-NEXT: $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr0, $sgpr2_sgpr3 = V_SUBBREV_U32_e64_dpp $vgpr0, $vgpr1, $vgpr2, $sgpr2_sgpr3, 0, 1, 15, 15, 1, implicit $exec
    $sgpr2_sgpr3 = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_div_fmas_f32
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_div_fmas_f32
    ; GCN: $vgpr0 = V_DIV_FMAS_F32_e64 0, $vgpr1, 0, $vgpr2, 0, $vgpr3, 0, 0, implicit $mode, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr0 = V_DIV_FMAS_F32_e64 0, $vgpr1, 0, $vgpr2, 0, $vgpr3, 0, 0, implicit $mode, implicit $vcc, implicit $exec
    $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

---
name:            mask_hazard_div_fmas_f64
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_div_fmas_f64
    ; GCN: $vgpr0_vgpr1 = V_DIV_FMAS_F64_e64 0, $vgpr0_vgpr1, 0, $vgpr2_vgpr3, 0, $vgpr4_vgpr5, 0, 0, implicit $mode, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr0_vgpr1 = V_DIV_FMAS_F64_e64 0, $vgpr0_vgpr1, 0, $vgpr2_vgpr3, 0, $vgpr4_vgpr5, 0, 0, implicit $mode, implicit $vcc, implicit $exec
    $vcc = S_CSELECT_B64 -1, 0, implicit $scc
    S_ENDPGM 0
...

# Check low word overlap
---
name:            mask_hazard_subreg1
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subreg1
    ; GCN: $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, implicit $exec
    ; GCN-NEXT: $sgpr2 = S_MOV_B32 0
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, implicit $exec
    $sgpr2 = S_MOV_B32 0
    S_ENDPGM 0
...

# Check high word overlap
---
name:            mask_hazard_subreg2
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subreg2
    ; GCN: $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, implicit $exec
    ; GCN-NEXT: $sgpr3 = S_MOV_B32 0
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, implicit $exec
    $sgpr3 = S_MOV_B32 0
    S_ENDPGM 0
...

# Check multiple subreg overlap
---
name:            mask_hazard_subreg3
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subreg3
    ; GCN: $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, implicit $exec
    ; GCN-NEXT: $sgpr2 = S_MOV_B32 0
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: $sgpr3 = S_MOV_B32 0
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, implicit $exec
    $sgpr2 = S_MOV_B32 0
    $sgpr3 = S_MOV_B32 0
    S_ENDPGM 0
...

# Check vcc_lo overlap
---
name:            mask_hazard_subreg4
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subreg4
    ; GCN: $vgpr1 = V_CNDMASK_B32_e32 $vgpr1, $vgpr2, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vcc_lo = S_MOV_B32 0
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: $sgpr2 = S_MOV_B32 $vcc_lo
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e32 $vgpr1, $vgpr2, implicit $vcc, implicit $exec
    $vcc_lo = S_MOV_B32 0
    $sgpr2 = S_MOV_B32 $vcc_lo
    S_ENDPGM 0
...

# Check vcc_hi overlap
---
name:            mask_hazard_subreg5
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_subreg5
    ; GCN: $vgpr1 = V_CNDMASK_B32_e32 $vgpr1, $vgpr2, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vcc_hi = S_MOV_B32 0
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: $sgpr2 = S_MOV_B32 $vcc_hi
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e32 $vgpr1, $vgpr2, implicit $vcc, implicit $exec
    $vcc_hi = S_MOV_B32 0
    $sgpr2 = S_MOV_B32 $vcc_hi
    S_ENDPGM 0
...

# S_WAITCNT does not mitigate hazard
---
name:            mask_hazard_waitcnt
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_waitcnt
    ; GCN: $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr0_sgpr1, implicit $exec
    ; GCN-NEXT: S_WAITCNT 0
    ; GCN-NEXT: $sgpr0_sgpr1 = S_GETPC_B64
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: $sgpr0 = S_ADD_U32 $sgpr0, 0, implicit-def $scc
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr0_sgpr1, implicit $exec
    S_WAITCNT 0
    $sgpr0_sgpr1 = S_GETPC_B64
    $sgpr0 = S_ADD_U32 $sgpr0, 0, implicit-def $scc
    S_ENDPGM 0
...

# Check implicit $exec
---
name:            mask_hazard_gap1
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_gap1
    ; GCN: $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr0_sgpr1, implicit $exec
    ; GCN-NEXT: $vgpr2 = V_MOV_B32_e32 0, implicit $exec
    ; GCN-NEXT: $vgpr3 = V_MOV_B32_e32 0, implicit $exec
    ; GCN-NEXT: $sgpr0_sgpr1 = S_GETPC_B64
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: $sgpr0 = S_ADD_U32 $sgpr0, 0, implicit-def $scc
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr0_sgpr1, implicit $exec
    $vgpr2 = V_MOV_B32_e32 0, implicit $exec
    $vgpr3 = V_MOV_B32_e32 0, implicit $exec
    $sgpr0_sgpr1 = S_GETPC_B64
    $sgpr0 = S_ADD_U32 $sgpr0, 0, implicit-def $scc
    S_ENDPGM 0
...

# Check implicit $mode
---
name:            mask_hazard_gap2
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_gap2
    ; GCN: $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr0_sgpr1, implicit $exec
    ; GCN-NEXT: $vgpr2 = V_MOV_B32_e32 0, implicit $exec, implicit $mode
    ; GCN-NEXT: $sgpr0_sgpr1 = S_GETPC_B64
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: $sgpr0 = S_ADD_U32 $sgpr0, 0, implicit-def $scc
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr0_sgpr1, implicit $exec
    $vgpr2 = V_MOV_B32_e32 0, implicit $exec, implicit $mode
    $sgpr0_sgpr1 = S_GETPC_B64
    $sgpr0 = S_ADD_U32 $sgpr0, 0, implicit-def $scc
    S_ENDPGM 0
...

# Check explicit $exec
---
name:            mask_hazard_gap3
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_gap3
    ; GCN: $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr0_sgpr1, implicit $exec
    ; GCN-NEXT: $vgpr2 = V_WRITELANE_B32 $exec_lo, 0, $vgpr2
    ; GCN-NEXT: $sgpr0_sgpr1 = S_GETPC_B64
    ; GCN-NEXT: S_WAITCNT_DEPCTR 65534
    ; GCN-NEXT: $sgpr0 = S_ADD_U32 $sgpr0, 0, implicit-def $scc
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr0_sgpr1, implicit $exec
    $vgpr2 = V_WRITELANE_B32 $exec_lo, 0, $vgpr2
    $sgpr0_sgpr1 = S_GETPC_B64
    $sgpr0 = S_ADD_U32 $sgpr0, 0, implicit-def $scc
    S_ENDPGM 0
...

# Different SGPR write
---
name:            mask_hazard_no_hazard1
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_no_hazard1
    ; GCN: $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, implicit $exec
    ; GCN-NEXT: $sgpr0 = S_MOV_B32 0
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e64 0, $vgpr1, 0, $vgpr2, $sgpr2_sgpr3, implicit $exec
    $sgpr0 = S_MOV_B32 0
    S_ENDPGM 0
...

# Different SGPR write with mask read overlap
---
name:            mask_hazard_no_hazard2
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_no_hazard2
    ; GCN: $vgpr1 = V_CNDMASK_B32_e32 $vgpr1, $vgpr2, implicit $vcc, implicit $exec
    ; GCN-NEXT: $sgpr0_sgpr1 = S_MOV_B64 $vcc
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e32 $vgpr1, $vgpr2, implicit $vcc, implicit $exec
    $sgpr0_sgpr1 = S_MOV_B64 $vcc
    S_ENDPGM 0
...

# Overlapping VGPR write
---
name:            mask_hazard_no_hazard3
body:            |
  bb.0:
    ; GCN-LABEL: name: mask_hazard_no_hazard3
    ; GCN: $vgpr1 = V_CNDMASK_B32_e32 $vgpr1, $vgpr2, implicit $vcc, implicit $exec
    ; GCN-NEXT: $vgpr2 = V_MOV_B32_e32 0, implicit $exec
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr1 = V_CNDMASK_B32_e32 $vgpr1, $vgpr2, implicit $vcc, implicit $exec
    $vgpr2 = V_MOV_B32_e32 0, implicit $exec
    S_ENDPGM 0
...