llvm-project/llvm/test/CodeGen/AMDGPU/hazard-hidden-bundle.mir

# RUN: llc -march=amdgcn -mcpu=gfx902 -verify-machineinstrs -run-pass  post-RA-hazard-rec %s -o - | FileCheck -check-prefixes=GCN,XNACK,GCX9 %s
# RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs -run-pass  post-RA-hazard-rec %s -o - | FileCheck -check-prefixes=GCN,NOXNACK,GFX9 %s
# RUN: llc -march=amdgcn -mcpu=gfx1010 -mattr=-WavefrontSize32,+WavefrontSize64 -verify-machineinstrs -run-pass  post-RA-hazard-rec %s -o - | FileCheck -check-prefixes=GCN,NOXNACK,GFX10 %s

# GCN-LABEL: name: break_smem_clause_simple_load_smrd8_ptr_hidden_bundle
# GCN: bb.0:
# GCN:          }
# XNACK-NEXT:   S_NOP
# NOXNACK-NOT:  S_NOP
# GCN:          S_LOAD_DWORDX2_IMM
---
name: break_smem_clause_simple_load_smrd8_ptr_hidden_bundle
body: |
  bb.0:
    BUNDLE implicit-def $sgpr6_sgpr7 {
      $sgpr10_sgpr11 = S_LOAD_DWORDX2_IMM $sgpr12_sgpr13, 0, 0, 0
    }
    $sgpr14_sgpr15 = S_LOAD_DWORDX2_IMM $sgpr10_sgpr11, 0, 0, 0
    S_ENDPGM 0
...

# GFX9-LABEL: name: hazard_precedes_bundle
# GFX9:      S_MOV_B32
# GFX9-NEXT: S_NOP
# GFX9:      BUNDLE
# GFX9-NEXT: S_NOP
---
name: hazard_precedes_bundle
body:	|
  bb.0:
    $m0 = S_MOV_B32 $sgpr7
    S_SENDMSG 3, implicit $exec, implicit $m0
    $m0 = S_MOV_B32 $sgpr8
    BUNDLE implicit-def $vgpr0 {
      $vgpr0 = V_INTERP_P1_F32 killed $vgpr4, 0, 0, implicit $m0, implicit $exec
    }
    S_ENDPGM 0
...

# GCN-LABEL: name: vmem_vcc_hazard_ignore_bundle_instr
# GCN:      S_LOAD_DWORDX2_IMM
# GCN-NEXT: }
# GCN-NEXT: S_NOP
# GCN-NEXT: S_NOP
# GCN-NEXT: S_NOP
# GCN-NEXT: S_NOP
# GCN:      BUFFER_LOAD_DWORD_OFFEN
---
name: vmem_vcc_hazard_ignore_bundle_instr
body: |
  bb.0:
    $sgpr0_sgpr1_sgpr2_sgpr3 = IMPLICIT_DEF
    $vgpr0 = IMPLICIT_DEF
    BUNDLE implicit-def $vgpr1, implicit $vgpr0, implicit $vgpr0, implicit-def $vcc, implicit $vcc, implicit $exec {
      $vgpr1 = V_ADDC_U32_e32 $vgpr0, $vgpr0, implicit-def $vcc, implicit $vcc, implicit $exec
    }
    BUNDLE implicit-def $sgpr0_sgpr1, implicit $sgpr10_sgpr11 {
      $sgpr0_sgpr1 = S_LOAD_DWORDX2_IMM $sgpr10_sgpr11, 0, 0, 0
    }
    $vgpr1 = BUFFER_LOAD_DWORD_OFFEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $vcc_lo, 0, 0, 0, 0, 0, implicit $exec
    S_ENDPGM 0
...

# GCN-LABEL: name: vmem_vcc_min_of_two_after_bundle
# GCN:      bb.2:
# GCN-NEXT: S_NOP
# GCN-NEXT: S_NOP
# GCN-NEXT: S_NOP
# GCN-NEXT: S_NOP
# GCN-NEXT: S_NOP
# GCN-NEXT: BUFFER_LOAD_DWORD_OFFEN
---
name: vmem_vcc_min_of_two_after_bundle
body: |
  bb.0:
    successors: %bb.2

    BUNDLE implicit-def $vgpr1, implicit $vgpr0 {
      $sgpr0_sgpr1_sgpr2_sgpr3 = IMPLICIT_DEF
      $vgpr0 = IMPLICIT_DEF
      $vgpr1 = V_ADDC_U32_e32 $vgpr0, $vgpr0, implicit-def $vcc, implicit $vcc, implicit $exec
    }
    S_NOP 0
    S_BRANCH %bb.2

  bb.1:
    successors: %bb.2

    BUNDLE implicit-def $vgpr1, implicit $vgpr0 {
      $vgpr1 = V_ADDC_U32_e32 $vgpr0, $vgpr0, implicit-def $vcc, implicit $vcc, implicit $exec
    }

  bb.2:
    $vgpr1 = BUFFER_LOAD_DWORD_OFFEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $vcc_lo, 0, 0, 0, 0, 0, implicit $exec
...