| Chandler Carruth | 49589f0 | 2012-07-02 18:37:59 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s |
| Evan Cheng | 50a5914 | 2009-10-13 22:02:20 +0000 | [diff] [blame] | 2 | ; rdar://7282591 |
| 3 | |
| Evan Cheng | 2c4f282 | 2009-10-14 01:45:10 +0000 | [diff] [blame] | 4 | @X = common global i32 0 |
| 5 | @Y = common global i32 0 |
| 6 | @Z = common global i32 0 |
| Evan Cheng | 50a5914 | 2009-10-13 22:02:20 +0000 | [diff] [blame] | 7 | |
| Bill Wendling | d5cc8b8 | 2012-04-24 09:15:38 +0000 | [diff] [blame] | 8 | ; CHECK: NoAlias: i32* %P, i32* @Z |
| 9 | |
| Dan Gohman | 32d1fe5 | 2010-11-11 21:08:46 +0000 | [diff] [blame] | 10 | define void @foo(i32 %cond) nounwind { |
| Evan Cheng | 50a5914 | 2009-10-13 22:02:20 +0000 | [diff] [blame] | 11 | entry: |
| Evan Cheng | 2c4f282 | 2009-10-14 01:45:10 +0000 | [diff] [blame] | 12 | %"alloca point" = bitcast i32 0 to i32 |
| 13 | %tmp = icmp ne i32 %cond, 0 |
| 14 | br i1 %tmp, label %bb, label %bb1 |
| Evan Cheng | 50a5914 | 2009-10-13 22:02:20 +0000 | [diff] [blame] | 15 | |
| Evan Cheng | 2c4f282 | 2009-10-14 01:45:10 +0000 | [diff] [blame] | 16 | bb: |
| 17 | br label %bb2 |
| Evan Cheng | 50a5914 | 2009-10-13 22:02:20 +0000 | [diff] [blame] | 18 | |
| Evan Cheng | 2c4f282 | 2009-10-14 01:45:10 +0000 | [diff] [blame] | 19 | bb1: |
| 20 | br label %bb2 |
| Evan Cheng | 50a5914 | 2009-10-13 22:02:20 +0000 | [diff] [blame] | 21 | |
| Evan Cheng | 2c4f282 | 2009-10-14 01:45:10 +0000 | [diff] [blame] | 22 | bb2: |
| 23 | %P = phi i32* [ @X, %bb ], [ @Y, %bb1 ] |
| 24 | %tmp1 = load i32* @Z, align 4 |
| 25 | store i32 123, i32* %P, align 4 |
| 26 | %tmp2 = load i32* @Z, align 4 |
| 27 | br label %return |
| Evan Cheng | 50a5914 | 2009-10-13 22:02:20 +0000 | [diff] [blame] | 28 | |
| Evan Cheng | 2c4f282 | 2009-10-14 01:45:10 +0000 | [diff] [blame] | 29 | return: |
| Evan Cheng | 50a5914 | 2009-10-13 22:02:20 +0000 | [diff] [blame] | 30 | ret void |
| 31 | } |