25 lines
466 B
LLVM
25 lines
466 B
LLVM
; RUN: opt -S < %s -gvn-sink | FileCheck %s
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; CHECK-LABEL: sink
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; CHECK-NOT: fneg
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; CHECK: = phi
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; CHECK: fneg
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define float @sink(float %a, float %b, i1 %cmp) {
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entry:
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br i1 %cmp, label %if.then, label %if.else
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if.then:
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%sub = fsub float %a, %b
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%neg0 = fneg float %sub
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br label %if.end
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if.else:
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%add = fadd float %a, %b
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%neg1 = fneg float %add
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br label %if.end
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if.end:
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%phi = phi float [ %neg0, %if.then ], [ %neg1, %if.else ]
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ret float %phi
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}
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