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 -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 6 7@g = external global i32 8 9define void @store_arg_unknown_callee(i32** %arg1) { 10 store i32* @g, i32** %arg1 11 ret void 12} 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 21define 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 25 26 store i32* %a, i32** %p 27 call void @store_arg_unknown_callee(i32** %p) 28 29 %lp = load i32*, i32** %p 30 31 ret void 32}