diff options
Diffstat (limited to 'llvm/test/CodeGen')
| -rw-r--r-- | llvm/test/CodeGen/AMDGPU/waitcnt-no-redundant.mir | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/waitcnt-no-redundant.mir b/llvm/test/CodeGen/AMDGPU/waitcnt-no-redundant.mir new file mode 100644 index 00000000000..188f0151a70 --- /dev/null +++ b/llvm/test/CodeGen/AMDGPU/waitcnt-no-redundant.mir @@ -0,0 +1,24 @@ +# RUN: llc -mtriple=amdgcn -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck %s + +# Check that the waitcnt pass does *not* insert a redundant waitcnt instr. +# In this testcase, ensure that pass does not insert redundant S_WAITCNT 127 +# or S_WAITCNT 3952 + +... +# CHECK-LABEL: name: waitcnt-no-redundant +# CHECK: DS_READ_B64 +# CHECK-NEXT: S_WAITCNT 127 +# CHECK-NEXT: FLAT_ATOMIC_CMPSWAP +# CHECK-NEXT: S_WAITCNT 3952 +# CHECK-NEXT: BUFFER_WBINVL1_VOL + +name: waitcnt-no-redundant +body: | + bb.0: + renamable $vgpr0_vgpr1 = DS_READ_B64 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec + S_WAITCNT 127 + FLAT_ATOMIC_CMPSWAP killed renamable $vgpr0_vgpr1, killed renamable $vgpr3_vgpr4, 0, 0, implicit $exec, implicit $flat_scr + S_WAITCNT 3952 + BUFFER_WBINVL1_VOL implicit $exec + S_ENDPGM +... |
