1; RUN: opt < %s -basicaa -globalsmodref-aa -gvn -instcombine -S | \
2; RUN:   grep {ret i32 0}
3
4@G = internal global i32* null		; <i32**> [#uses=3]
5
6
7declare i8* @malloc(i32)
8define void @test() {
9	%a = call i8* @malloc(i32 4)
10        %A = bitcast i8* %a to i32*
11	store i32* %A, i32** @G
12	ret void
13}
14
15define i32 @test1(i32* %P) {
16	%g1 = load i32** @G		; <i32*> [#uses=2]
17	%h1 = load i32* %g1		; <i32> [#uses=1]
18	store i32 123, i32* %P
19	%g2 = load i32** @G		; <i32*> [#uses=0]
20	%h2 = load i32* %g1		; <i32> [#uses=1]
21	%X = sub i32 %h1, %h2		; <i32> [#uses=1]
22	ret i32 %X
23}
24