1 ; RUN: opt < %s -basicaa -gvn -instcombine |\ 2 ; RUN: llvm-dis | grep {ret i32 0} 3 4 declare void @foo(i32*) 5 6 declare void @bar() 7 8 define 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
