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26 lines
741 B
YAML
26 lines
741 B
YAML
# RUN: llc -mtriple=amdgcn -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck %s
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# Check that the waitcnt pass does *not* insert a redundant waitcnt instr.
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# In this testcase, ensure that pass does not insert redundant S_WAITCNT 3952
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...
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# CHECK-LABEL: name: waitcnt-no-redundant
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# CHECK: S_WAITCNT 3952
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# CHECK-NEXT: FLAT_ATOMIC_CMPSWAP
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# CHECK-NEXT: S_WAITCNT 3952
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# CHECK-NEXT: BUFFER_WBINVL1
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name: waitcnt-no-redundant
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body: |
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bb.0:
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renamable $vgpr0 = V_MOV_B32_e32 0, implicit $exec
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bb.1:
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S_WAITCNT 3952
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FLAT_ATOMIC_CMPSWAP undef renamable $vgpr0_vgpr1, renamable $vgpr0_vgpr1, 0, 0, implicit $exec, implicit $flat_scr
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S_WAITCNT 3952
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BUFFER_WBINVL1 implicit $exec
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S_BRANCH %bb.1
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...
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