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34 lines
712 B
34 lines
712 B
4 months ago
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; RUN: opt < %s -instcombine -S | grep "ret i32 %A"
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; RUN: opt < %s -die -S | not grep call.*llvm
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define i32 @test(i32 %A) {
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%X = or i1 false, false
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br i1 %X, label %T, label %C
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T: ; preds = %0
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%B = add i32 %A, 1
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br label %C
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C: ; preds = %T, %0
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%C.upgrd.1 = phi i32 [ %B, %T ], [ %A, %0 ]
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ret i32 %C.upgrd.1
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}
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define i32* @test2(i32 %width) {
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%tmp = call i8* @llvm.stacksave( )
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%tmp14 = alloca i32, i32 %width
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ret i32* %tmp14
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}
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declare i8* @llvm.stacksave()
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declare void @llvm.lifetime.start(i64, i8*)
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declare void @llvm.lifetime.end(i64, i8*)
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define void @test3() {
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call void @llvm.lifetime.start(i64 -1, i8* undef)
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call void @llvm.lifetime.end(i64 -1, i8* undef)
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ret void
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}
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