| ; This testcase ensures that CFL AA handles assignment cycles correctly |
| |
| ; 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 |
| |
| ; CHECK-LABEL: Function: test_cycle |
| ; CHECK: NoAlias: i64* %a, i64** %b |
| ; CHECK: NoAlias: i64* %a, i64*** %c |
| ; CHECK: NoAlias: i64** %b, i64*** %c |
| ; CHECK: NoAlias: i64* %a, i64**** %d |
| ; CHECK: NoAlias: i64** %b, i64**** %d |
| ; CHECK: NoAlias: i64*** %c, i64**** %d |
| ; CHECK: NoAlias: i64* %a, i64* %e |
| ; CHECK: NoAlias: i64* %e, i64** %b |
| ; CHECK: NoAlias: i64* %e, i64*** %c |
| ; CHECK: MayAlias: i64* %a, i64* %f |
| ; CHECK: NoAlias: i64* %f, i64** %b |
| ; CHECK: NoAlias: i64* %f, i64*** %c |
| ; CHECK: MayAlias: i64* %f, i64**** %d |
| ; CHECK: MayAlias: i64* %e, i64* %f |
| define void @test_cycle() { |
| %a = alloca i64, align 8 |
| %b = alloca i64*, align 8 |
| %c = alloca i64**, align 8 |
| %d = alloca i64***, align 8 |
| store i64* %a, i64** %b |
| store i64** %b, i64*** %c |
| store i64*** %c, i64**** %d |
| |
| %e = bitcast i64**** %d to i64* |
| store i64* %e, i64** %b |
| %f = load i64*, i64** %b |
| ret void |
| } |