1 ; This testcase ensures that CFL AA answers queries soundly when callee tries
2 ; to mutate the memory pointed to by its parameters
4 ; RUN: opt < %s -disable-basicaa -cfl-steens-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
5 ; RUN: opt < %s -aa-pipeline=cfl-steens-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
7 define void @store_arg_callee(i32** %arg1, i32* %arg2) {
8 store i32* %arg2, i32** %arg1
11 ; CHECK-LABEL: Function: test_store_arg
12 ; CHECK: NoAlias: i32* %a, i32** %p
13 ; CHECK: NoAlias: i32* %b, i32** %p
14 ; CHECK: MayAlias: i32* %a, i32* %lp
15 ; CHECK: MayAlias: i32* %b, i32* %lp
16 ; CHECK: MayAlias: i32* %b, i32* %lq
17 ; CHECK: MayAlias: i32* %lp, i32* %lq
19 ; We could've proven the following facts if the analysis were inclusion-based:
20 ; NoAlias: i32* %a, i32* %b
21 ; NoAlias: i32* %a, i32* %lq
22 define void @test_store_arg() {
23 %a = alloca i32, align 4
24 %b = alloca i32, align 4
25 %p = alloca i32*, align 8
26 %q = alloca i32*, align 8
28 store i32* %a, i32** %p
29 store i32* %b, i32** %q
30 call void @store_arg_callee(i32** %p, i32* %b)
32 %lp = load i32*, i32** %p
33 %lq = load i32*, i32** %q