29 lines
793 B
LLVM
29 lines
793 B
LLVM
; RUN: opt -mtriple=amdgcn-- -analyze -divergence %s | FileCheck %s
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; CHECK-LABEL: 'test1':
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; CHECK-NEXT: DIVERGENT: i32 %bound
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; CHECK-NEXT: DIVERGENT: %break = icmp sge i32 %counter, %bound
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; CHECK-NEXT: DIVERGENT: br i1 %break, label %footer, label %body
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; CHECK-NEXT: DIVERGENT: br i1 %break, label %end, label %header
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; Note: %counter is not divergent!
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define amdgpu_ps void @test1(i32 %bound) {
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entry:
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br label %header
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header:
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%counter = phi i32 [ 0, %entry ], [ %counter.footer, %footer ]
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%break = icmp sge i32 %counter, %bound
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br i1 %break, label %footer, label %body
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body:
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%counter.next = add i32 %counter, 1
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br label %footer
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footer:
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%counter.footer = phi i32 [ %counter.next, %body ], [ undef, %header ]
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br i1 %break, label %end, label %header
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end:
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ret void
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}
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