| ; This testcase ensures that CFL AA answers queries soundly when callee tries |
| ; to mutate the memory pointed to by its parameters |
| |
| ; RUN: opt < %s -disable-basicaa -cfl-anders-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s |
| ; RUN: opt < %s -aa-pipeline=cfl-anders-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s |
| |
| @g = external global i32 |
| |
| define void @store_arg_unknown_callee(i32** %arg1) { |
| store i32* @g, i32** %arg1 |
| ret void |
| } |
| ; CHECK-LABEL: Function: test_store_arg_unknown |
| ; CHECK: NoAlias: i32* %x, i32** %p |
| ; CHECK: NoAlias: i32* %a, i32** %p |
| ; CHECK: NoAlias: i32* %b, i32** %p |
| ; CHECK: MayAlias: i32* %lp, i32* %x |
| ; CHECK: MayAlias: i32* %a, i32* %lp |
| ; CHECK: NoAlias: i32* %b, i32* %lp |
| ; CHECK: NoAlias: i32* %lp, i32** %p |
| define void @test_store_arg_unknown(i32* %x) { |
| %a = alloca i32, align 4 |
| %b = alloca i32, align 4 |
| %p = alloca i32*, align 8 |
| |
| store i32* %a, i32** %p |
| call void @store_arg_unknown_callee(i32** %p) |
| |
| %lp = load i32*, i32** %p |
| |
| ret void |
| } |