1*9880d681SAndroid Build Coastguard Worker; This testcase ensures that CFL AA answers queries soundly when callee tries 2*9880d681SAndroid Build Coastguard Worker; to return the multi-level dereference of one of its parameters 3*9880d681SAndroid Build Coastguard Worker 4*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -disable-basicaa -cfl-steens-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s 5*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -aa-pipeline=cfl-steens-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s 6*9880d681SAndroid Build Coastguard Worker 7*9880d681SAndroid Build Coastguard Workerdefine i32* @return_deref_arg_multilevel_callee(i32*** %arg1) { 8*9880d681SAndroid Build Coastguard Worker %deref = load i32**, i32*** %arg1 9*9880d681SAndroid Build Coastguard Worker %deref2 = load i32*, i32** %deref 10*9880d681SAndroid Build Coastguard Worker ret i32* %deref2 11*9880d681SAndroid Build Coastguard Worker} 12*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: Function: test_return_deref_arg_multilevel 13*9880d681SAndroid Build Coastguard Worker; CHECK: NoAlias: i32* %a, i32* %b 14*9880d681SAndroid Build Coastguard Worker; CHECK: MayAlias: i32* %a, i32* %c 15*9880d681SAndroid Build Coastguard Worker; CHECK: NoAlias: i32* %b, i32* %c 16*9880d681SAndroid Build Coastguard Worker; CHECK: NoAlias: i32* %c, i32** %p 17*9880d681SAndroid Build Coastguard Worker; CHECK: NoAlias: i32* %c, i32*** %pp 18*9880d681SAndroid Build Coastguard Worker; CHECK: MayAlias: i32** %lpp, i32** %p 19*9880d681SAndroid Build Coastguard Worker; CHECK: NoAlias: i32** %lpp, i32*** %pp 20*9880d681SAndroid Build Coastguard Worker; CHECK: NoAlias: i32* %c, i32** %lpp 21*9880d681SAndroid Build Coastguard Worker; CHECK: MayAlias: i32* %a, i32* %lpp_deref 22*9880d681SAndroid Build Coastguard Worker; CHECK: NoAlias: i32* %b, i32* %lpp_deref 23*9880d681SAndroid Build Coastguard Worker; CHECK: NoAlias: i32* %lpp_deref, i32*** %pp 24*9880d681SAndroid Build Coastguard Worker; CHECK: MayAlias: i32* %a, i32* %lp 25*9880d681SAndroid Build Coastguard Worker; CHECK: NoAlias: i32* %b, i32* %lp 26*9880d681SAndroid Build Coastguard Worker; CHECK: NoAlias: i32* %lp, i32** %p 27*9880d681SAndroid Build Coastguard Worker; CHECK: NoAlias: i32* %lp, i32*** %pp 28*9880d681SAndroid Build Coastguard Worker; CHECK: MayAlias: i32* %c, i32* %lp 29*9880d681SAndroid Build Coastguard Worker; CHECK: NoAlias: i32* %lp, i32** %lpp 30*9880d681SAndroid Build Coastguard Worker; CHECK: MayAlias: i32* %lp, i32* %lpp_deref 31*9880d681SAndroid Build Coastguard Workerdefine void @test_return_deref_arg_multilevel() { 32*9880d681SAndroid Build Coastguard Worker %a = alloca i32, align 4 33*9880d681SAndroid Build Coastguard Worker %b = alloca i32, align 4 34*9880d681SAndroid Build Coastguard Worker %p = alloca i32*, align 8 35*9880d681SAndroid Build Coastguard Worker %pp = alloca i32**, align 8 36*9880d681SAndroid Build Coastguard Worker 37*9880d681SAndroid Build Coastguard Worker store i32* %a, i32** %p 38*9880d681SAndroid Build Coastguard Worker store i32** %p, i32*** %pp 39*9880d681SAndroid Build Coastguard Worker %c = call i32* @return_deref_arg_multilevel_callee(i32*** %pp) 40*9880d681SAndroid Build Coastguard Worker 41*9880d681SAndroid Build Coastguard Worker %lpp = load i32**, i32*** %pp 42*9880d681SAndroid Build Coastguard Worker %lpp_deref = load i32*, i32** %lpp 43*9880d681SAndroid Build Coastguard Worker %lp = load i32*, i32** %p 44*9880d681SAndroid Build Coastguard Worker 45*9880d681SAndroid Build Coastguard Worker ret void 46*9880d681SAndroid Build Coastguard Worker}