| ; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s |
| ; If GEP base doesn't alias Z, then GEP doesn't alias Z. |
| ; rdar://7282591 |
| |
| @Y = common global i32 0 |
| @Z = common global i32 0 |
| |
| ; CHECK: Function: foo |
| ; CHECK: NoAlias: i32* %P, i32* @Z |
| |
| define void @foo(i32 %cond) nounwind { |
| entry: |
| %a = alloca i32 |
| %tmp = icmp ne i32 %cond, 0 |
| br i1 %tmp, label %bb, label %bb1 |
| |
| bb: |
| %b = getelementptr i32, i32* %a, i32 0 |
| br label %bb2 |
| |
| bb1: |
| br label %bb2 |
| |
| bb2: |
| %P = phi i32* [ %b, %bb ], [ @Y, %bb1 ] |
| %tmp1 = load i32, i32* @Z, align 4 |
| store i32 123, i32* %P, align 4 |
| %tmp2 = load i32, i32* @Z, align 4 |
| br label %return |
| |
| return: |
| ret void |
| } |
