-; RUN: llvm-as < %s | opt -globalsmodref-aa -load-vn -gcse -instcombine | llvm-dis | grep 'ret int 0'
-%G = internal global int* null
+; RUN: opt < %s -basicaa -globalsmodref-aa -gvn -instcombine -S | \
+; RUN: grep {ret i32 0}
-implementation
+@G = internal global i32* null ; <i32**> [#uses=3]
-void %test() {
- %A = malloc int
- store int* %A, int** %G
+define void @test() {
+ %A = malloc i32 ; <i32*> [#uses=1]
+ store i32* %A, i32** @G
ret void
}
-int %test1(int *%P) {
- %g1 = load int** %G
- %h1 = load int* %g1
-
- ; This store cannot alias either G or g1.
- store int 123, int* %P
-
- %g2 = load int** %G
- %h2 = load int* %g1
- %X = sub int %h1, %h2 ;; -> 0
- ret int %X
+define i32 @test1(i32* %P) {
+ %g1 = load i32** @G ; <i32*> [#uses=2]
+ %h1 = load i32* %g1 ; <i32> [#uses=1]
+ store i32 123, i32* %P
+ %g2 = load i32** @G ; <i32*> [#uses=0]
+ %h2 = load i32* %g1 ; <i32> [#uses=1]
+ %X = sub i32 %h1, %h2 ; <i32> [#uses=1]
+ ret i32 %X
}