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llvm.amdgcn.wave.barrier.ll @stableraw · history · blame

; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s

; GCN-LABEL: {{^}}test_wave_barrier:
; GCN-DAG: ; wave barrier
; GCN-NOT: s_barrier

define amdgpu_kernel void @test_wave_barrier() #0 {
entry:
  call void @llvm.amdgcn.wave.barrier() #1
  ret void
}

; Check for verifier error from interpreting wave_barrier as a control
; flow barrier.

; GCN-LABEL: {{^}}test_wave_barrier_is_not_isBarrier:
; GCN-DAG: ; wave barrier
; GCN-NOT: s_barrier
define amdgpu_kernel void @test_wave_barrier_is_not_isBarrier() #0 {
entry:
  call void @llvm.amdgcn.wave.barrier() #1
  unreachable
}

declare void @llvm.amdgcn.wave.barrier() #1

attributes #0 = { nounwind }
attributes #1 = { convergent nounwind }