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22 lines
511 B
LLVM
22 lines
511 B
LLVM
; Mem2reg should not insert dead PHI nodes! The naive algorithm inserts a PHI
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; node in L3, even though there is no load of %A in anything dominated by L3.
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; RUN: llvm-as < %s | opt -mem2reg | llvm-dis | not grep phi
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void %test(int %B, bool %C) {
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%A = alloca int
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store int %B, int* %A
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br bool %C, label %L1, label %L2
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L1:
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store int %B, int* %A
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%D = load int* %A
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call void %test(int %D, bool false)
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br label %L3
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L2:
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%E = load int* %A
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call void %test(int %E, bool true)
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br label %L3
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L3:
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ret void
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}
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