forked from OSchip/llvm-project
21 lines
546 B
LLVM
21 lines
546 B
LLVM
; This is a basic sanity check for constant propogation. The add instruction
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; should be eliminated.
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; RUN: llvm-as < %s | opt -constprop -die | llvm-dis | not grep add
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define i32 @test(i1 %B) {
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br i1 %B, label %BB1, label %BB2
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BB1: ; preds = %0
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%Val = add i32 0, 0 ; <i32> [#uses=1]
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br label %BB3
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BB2: ; preds = %0
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br label %BB3
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BB3: ; preds = %BB2, %BB1
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%Ret = phi i32 [ %Val, %BB1 ], [ 1, %BB2 ] ; <i32> [#uses=1]
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ret i32 %Ret
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}
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