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24 lines
635 B
LLVM
24 lines
635 B
LLVM
; This testcase checks to make sure we can sink values which are only live on
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; some exits out of the loop, and that we can do so without breaking dominator
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; info.
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;
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; RUN: llvm-as < %s | opt -licm | llvm-dis | \
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; RUN: %prcontext add 1 | grep exit2:
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define i32 @test(i1 %C1, i1 %C2, i32* %P, i32* %Q) {
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Entry:
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br label %Loop
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Loop: ; preds = %Cont, %Entry
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br i1 %C1, label %Cont, label %exit1
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Cont: ; preds = %Loop
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%X = load i32* %P ; <i32> [#uses=2]
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store i32 %X, i32* %Q
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%V = add i32 %X, 1 ; <i32> [#uses=1]
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br i1 %C2, label %Loop, label %exit2
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exit1: ; preds = %Loop
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ret i32 0
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exit2: ; preds = %Cont
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ret i32 %V
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}
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