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https://github.com/c64scene-ar/llvm-6502.git
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2733b30195
after threading the branch, because both operands are the same value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22668 91177308-0d34-0410-b5e6-96231b3b80d8
37 lines
647 B
LLVM
37 lines
647 B
LLVM
; RUN: llvm-as < %s | opt -condprop | llvm-dis | not grep phi
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declare bool %foo()
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int %test(uint %C) {
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%Val = call bool %foo()
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switch uint %C, label %T1 [
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uint 4, label %T2
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uint 17, label %T3
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]
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T1:
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call void %a()
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br label %Cont
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T2:
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call void %b()
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br label %Cont
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T3:
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call void %c()
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br label %Cont
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Cont:
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;; PHI becomes dead after threading T2
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%C2 = phi bool [%Val, %T1], [true, %T2], [%Val, %T3]
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br bool %C2, label %L2, label %F2
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L2:
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call void %d()
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ret int 17
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F2:
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call void %e()
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ret int 1
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}
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declare void %a()
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declare void %b()
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declare void %c()
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declare void %d()
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declare void %e()
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