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32 lines
786 B
Plaintext
32 lines
786 B
Plaintext
; Test that PHI nodes and select instructions do not necessarily make stuff
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; non-constant.
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; RUN: llvm-as < %s | opt -globalopt | llvm-dis | not grep global
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@X = internal global i32 4 ; <i32*> [#uses=2]
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@Y = internal global i32 5 ; <i32*> [#uses=2]
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define i32 @test1(i1 %C) {
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%P = select i1 %C, i32* @X, i32* @Y ; <i32*> [#uses=1]
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%V = load i32* %P ; <i32> [#uses=1]
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ret i32 %V
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}
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define i32 @test2(i1 %C) {
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; <label>:0
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br i1 %C, label %T, label %Cont
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T: ; preds = %0
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br label %Cont
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Cont: ; preds = %T, %0
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%P = phi i32* [ @X, %0 ], [ @Y, %T ] ; <i32*> [#uses=1]
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%V = load i32* %P ; <i32> [#uses=1]
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ret i32 %V
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}
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