1 ; This testcase ensures that CFL AA answers queries soundly when callee tries
2 ; to return one of 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 i32* @return_arg_callee(i32* %arg1, i32* %arg2) {
10 ; CHECK-LABEL: Function: test_return_arg
11 ; CHECK: NoAlias: i32* %a, i32* %b
12 ; CHECK: MayAlias: i32* %a, i32* %c
13 ; CHECK: NoAlias: i32* %b, i32* %c
15 ; Temporarily disable modref checks
16 ; NoModRef: Ptr: i32* %b <-> %c = call i32* @return_arg_callee(i32* %a, i32* %b)
17 define void @test_return_arg() {
18 %a = alloca i32, align 4
19 %b = alloca i32, align 4
21 %c = call i32* @return_arg_callee(i32* %a, i32* %b)