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 -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
5
6declare noalias i8* @malloc(i64)
7
8define void @store_arg_multilevel_callee(i32*** %arg1, i32* %arg2) {
9  %ptr = call noalias i8* @malloc(i64 8)
10  %ptr_cast = bitcast i8* %ptr to i32**
11	store i32* %arg2, i32** %ptr_cast
12  store i32** %ptr_cast, i32*** %arg1
13	ret void
14}
15; CHECK-LABEL: Function: test_store_arg_multilevel
16; CHECK: NoAlias: i32* %a, i32* %b
17; CHECK: NoAlias: i32* %a, i32** %lpp
18; CHECK: NoAlias: i32* %b, i32** %lpp
19; CHECK: MayAlias: i32** %lpp, i32** %p
20; CHECK: MayAlias: i32* %a, i32* %lpp_deref
21; CHECK: MayAlias: i32* %b, i32* %lpp_deref
22; CHECK: NoAlias: i32* %lpp_deref, i32** %p
23; CHECK: NoAlias: i32* %lpp_deref, i32*** %pp
24; CHECK: NoAlias: i32** %lpp, i32* %lpp_deref
25; CHECK: MayAlias: i32* %a, i32* %lp
26; CHECK: NoAlias: i32* %lp, i32*** %pp
27; CHECK: NoAlias: i32* %lp, i32** %lpp
28; CHECK: MayAlias: i32* %lp, i32* %lpp_deref
29define void @test_store_arg_multilevel() {
30  %a = alloca i32, align 4
31  %b = alloca i32, align 4
32  %p = alloca i32*, align 8
33  %pp = alloca i32**, align 8
34
35  load i32, i32* %a
36  load i32, i32* %b
37  store i32* %a, i32** %p
38  store i32** %p, i32*** %pp
39  call void @store_arg_multilevel_callee(i32*** %pp, i32* %b)
40
41  %lpp = load i32**, i32*** %pp
42  %lpp_deref = load i32*, i32** %lpp
43  %lp = load i32*, i32** %p
44  load i32, i32* %lpp_deref
45  load i32, i32* %lp
46
47  ret void
48}
49