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1; RUN: opt < %s -basicaa -gvn -instcombine |\
2; RUN:   llvm-dis | grep {ret i32 0}
3
4declare void @foo(i32*)
5
6declare void @bar()
7
8define i32 @test() {
9        %A = alloca i32         ; <i32*> [#uses=3]
10        call void @foo( i32* %A )
11        %X = load i32* %A               ; <i32> [#uses=1]
12        tail call void @bar( )
13        %Y = load i32* %A               ; <i32> [#uses=1]
14        %Z = sub i32 %X, %Y             ; <i32> [#uses=1]
15        ret i32 %Z
16}
17