1; This testcase ensures that CFL AA answers queries soundly when callee tries
2; to mutate the memory pointed to by its parameters
3
4; RUN: opt < %s -disable-basic-aa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
5; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
6
7@g = external global i32
8
9define void @store_arg_unknown_callee(i32** %arg1) {
10	store i32* @g, i32** %arg1
11	ret void
12}
13; CHECK-LABEL: Function: test_store_arg_unknown
14; CHECK: NoAlias: i32* %x, i32** %p
15; CHECK: NoAlias: i32* %a, i32** %p
16; CHECK: NoAlias: i32* %b, i32** %p
17; CHECK: MayAlias: i32* %lp, i32* %x
18; CHECK: MayAlias: i32* %a, i32* %lp
19; CHECK: NoAlias: i32* %b, i32* %lp
20; CHECK: NoAlias: i32* %lp, i32** %p
21define void @test_store_arg_unknown(i32* %x) {
22  %a = alloca i32, align 4
23  %b = alloca i32, align 4
24  %p = alloca i32*, align 8
25
26  store i32* %a, i32** %p
27  call void @store_arg_unknown_callee(i32** %p)
28
29  %lp = load i32*, i32** %p
30
31  ret void
32}