26 lines
874 B
LLVM
26 lines
874 B
LLVM
; RUN: opt -mtriple amdgcn-unknown-amdhsa -analyze -divergence -use-gpu-divergence-analysis %s | FileCheck %s
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; CHECK: bb2:
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; CHECK-NOT: DIVERGENT: %Guard.bb2 = phi i1 [ true, %bb1 ], [ false, %bb0 ]
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; Function Attrs: nounwind readnone speculatable
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declare i32 @llvm.amdgcn.workitem.id.x() #0
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define protected amdgpu_kernel void @test2(i1 %uni) {
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bb0:
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%tid.x = call i32 @llvm.amdgcn.workitem.id.x()
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%i5 = icmp eq i32 %tid.x, -1
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br i1 %uni, label %bb1, label %bb2
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bb1: ; preds = %bb2, %bb0
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%lsr.iv = phi i32 [ 7, %bb0 ], [ %lsr.iv.next, %bb1 ]
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%lsr.iv.next = add nsw i32 %lsr.iv, -1
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br i1 %i5, label %bb2, label %bb1
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bb2: ; preds = %bb2, %bb1
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%Guard.bb2 = phi i1 [ true, %bb1 ], [ false, %bb0 ]
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ret void
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}
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attributes #0 = { nounwind readnone speculatable }
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