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 @g = external global i32
9 define void @store_arg_unknown_callee(i32** %arg1) {
10 store i32* @g, i32** %arg1
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
21 define 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
26 store i32* %a, i32** %p
27 call void @store_arg_unknown_callee(i32** %p)
29 %lp = load i32*, i32** %p