llvm/test/CodeGen/AMDGPU/insert-waitcnts-fence-soft.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
# RUN: llc -mtriple=amdgcn -mcpu=gfx942 -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck -check-prefix=GCN %s


# Expected vmcnt(0) since the direct load is the only load.
---
name: dma_then_fence
body:             |
  bb.0:
    ; GCN-LABEL: name: dma_then_fence
    ; GCN: S_WAITCNT 0
    ; GCN-NEXT: $m0 = S_MOV_B32 0
    ; GCN-NEXT: BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4, addrspace 1), (store (s32) into `ptr addrspace(3) poison` + 4, addrspace 3)
    ; GCN-NEXT: S_WAITCNT 3952
    ; GCN-NEXT: $vgpr1 = V_ADD_F32_e32 $vgpr1, $vgpr1, implicit $mode, implicit $exec
    ; GCN-NEXT: S_ENDPGM 0
    $m0 = S_MOV_B32 0
    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4), (store (s32) into `ptr addrspace(3) poison` + 4)
    S_WAITCNT_lds_direct
    $vgpr1 = V_ADD_F32_e32 $vgpr1, $vgpr1, implicit $mode, implicit $exec
    S_ENDPGM 0

...

# Expected vmcnt(1) since the global load is not processed by SIInsertWaitcnts.

---
name: dma_then_global_load
body:             |
  bb.0:
    ; GCN-LABEL: name: dma_then_global_load
    ; GCN: S_WAITCNT 0
    ; GCN-NEXT: $m0 = S_MOV_B32 0
    ; GCN-NEXT: BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4, addrspace 1), (store (s32) into `ptr addrspace(3) poison` + 4, addrspace 3)
    ; GCN-NEXT: $vgpr2 = GLOBAL_LOAD_DWORD $vgpr4_vgpr5, 0, 0, implicit $exec
    ; GCN-NEXT: S_WAITCNT 3953
    ; GCN-NEXT: $vgpr1 = V_ADD_F32_e32 $vgpr1, $vgpr1, implicit $mode, implicit $exec
    ; GCN-NEXT: S_ENDPGM 0
    $m0 = S_MOV_B32 0
    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4), (store (s32) into `ptr addrspace(3) poison` + 4)
    $vgpr2 = GLOBAL_LOAD_DWORD $vgpr4_vgpr5, 0, 0, implicit $exec
    S_WAITCNT_lds_direct
    $vgpr1 = V_ADD_F32_e32 $vgpr1, $vgpr1, implicit $mode, implicit $exec
    S_ENDPGM 0

...

# Expected no vmcnt since there is no direct load to LDS, and the global load is not processed by SIInsertWaitcnts.

---
name: no_dma_just_fence
body:             |
  bb.0:
    ; GCN-LABEL: name: no_dma_just_fence
    ; GCN: S_WAITCNT 0
    ; GCN-NEXT: $vgpr2 = GLOBAL_LOAD_DWORD $vgpr4_vgpr5, 0, 0, implicit $exec
    ; GCN-NEXT: $vgpr1 = V_ADD_F32_e32 $vgpr1, $vgpr1, implicit $mode, implicit $exec
    ; GCN-NEXT: S_ENDPGM 0
    $vgpr2 = GLOBAL_LOAD_DWORD $vgpr4_vgpr5, 0, 0, implicit $exec
    S_WAITCNT_lds_direct
    $vgpr1 = V_ADD_F32_e32 $vgpr1, $vgpr1, implicit $mode, implicit $exec
    S_ENDPGM 0

...

# Expected vmcnt(1) since the global load is not processed by SIInsertWaitcnts.

---
name: dma_then_system_fence
body:             |
  bb.0:
    ; GCN-LABEL: name: dma_then_system_fence
    ; GCN: S_WAITCNT 0
    ; GCN-NEXT: BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4, addrspace 1), (store (s32) into `ptr addrspace(3) poison` + 4, addrspace 3)
    ; GCN-NEXT: $vgpr2 = GLOBAL_LOAD_DWORD $vgpr4_vgpr5, 0, 0, implicit $exec
    ; GCN-NEXT: S_WAITCNT 3953
    ; GCN-NEXT: $vgpr1 = V_ADD_F32_e32 $vgpr1, $vgpr1, implicit $mode, implicit $exec
    ; GCN-NEXT: S_ENDPGM 0
    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4), (store (s32) into `ptr addrspace(3) poison` + 4)
    $vgpr2 = GLOBAL_LOAD_DWORD $vgpr4_vgpr5, 0, 0, implicit $exec
    S_WAITCNT_lds_direct
    $vgpr1 = V_ADD_F32_e32 $vgpr1, $vgpr1, implicit $mode, implicit $exec
    S_ENDPGM 0

...

# The computed vmcnt(1) gets merged with the existing vmcnt(0).

---
name: merge_with_prev_wait
body:             |
  bb.0:
    ; GCN-LABEL: name: merge_with_prev_wait
    ; GCN: S_WAITCNT 0
    ; GCN-NEXT: $m0 = S_MOV_B32 0
    ; GCN-NEXT: BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4, addrspace 1), (store (s32) into `ptr addrspace(3) poison` + 4, addrspace 3)
    ; GCN-NEXT: $vgpr2 = GLOBAL_LOAD_DWORD $vgpr4_vgpr5, 0, 0, implicit $exec
    ; GCN-NEXT: S_WAITCNT 3952
    ; GCN-NEXT: $vgpr1 = V_ADD_F32_e32 $vgpr1, $vgpr1, implicit $mode, implicit $exec
    ; GCN-NEXT: S_ENDPGM 0
    $m0 = S_MOV_B32 0
    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4), (store (s32) into `ptr addrspace(3) poison` + 4)
    $vgpr2 = GLOBAL_LOAD_DWORD $vgpr4_vgpr5, 0, 0, implicit $exec
    S_WAITCNT 3952
    S_WAITCNT_lds_direct
    $vgpr1 = V_ADD_F32_e32 $vgpr1, $vgpr1, implicit $mode, implicit $exec
    S_ENDPGM 0

...

# The computed vmcnt(1) gets merged with the existing vmcnt(0).

---
name: merge_with_next_wait
body:             |
  bb.0:
    ; GCN-LABEL: name: merge_with_next_wait
    ; GCN: S_WAITCNT 0
    ; GCN-NEXT: $m0 = S_MOV_B32 0
    ; GCN-NEXT: BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4, addrspace 1), (store (s32) into `ptr addrspace(3) poison` + 4, addrspace 3)
    ; GCN-NEXT: $vgpr2 = GLOBAL_LOAD_DWORD $vgpr4_vgpr5, 0, 0, implicit $exec
    ; GCN-NEXT: S_WAITCNT 3952
    ; GCN-NEXT: $vgpr1 = V_ADD_F32_e32 $vgpr1, $vgpr1, implicit $mode, implicit $exec
    ; GCN-NEXT: S_ENDPGM 0
    $m0 = S_MOV_B32 0
    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4), (store (s32) into `ptr addrspace(3) poison` + 4)
    $vgpr2 = GLOBAL_LOAD_DWORD $vgpr4_vgpr5, 0, 0, implicit $exec
    S_WAITCNT_lds_direct
    S_WAITCNT 3952
    $vgpr1 = V_ADD_F32_e32 $vgpr1, $vgpr1, implicit $mode, implicit $exec
    S_ENDPGM 0

...