| Dan Gohman | 1880092 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -adce -simplifycfg | llvm-dis |
| Justin Bogner | 19b6799 | 2015-10-30 23:13:18 +0000 | [diff] [blame] | 2 | ; RUN: opt < %s -passes=adce | llvm-dis |
| Chris Lattner | 5f1ddb0 | 2002-05-22 19:22:45 +0000 | [diff] [blame] | 3 | |
| Tanya Lattner | 5640bd1 | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 4 | define i32 @Test(i32 %A, i32 %B) { |
| Chris Lattner | 5f1ddb0 | 2002-05-22 19:22:45 +0000 | [diff] [blame] | 5 | BB1: |
| Tanya Lattner | 5640bd1 | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 6 | br label %BB4 |
| 7 | |
| 8 | BB2: ; No predecessors! |
| 9 | br label %BB3 |
| 10 | |
| 11 | BB3: ; preds = %BB4, %BB2 |
| 12 | %ret = phi i32 [ %X, %BB4 ], [ %B, %BB2 ] ; <i32> [#uses=1] |
| 13 | ret i32 %ret |
| 14 | |
| 15 | BB4: ; preds = %BB1 |
| 16 | %X = phi i32 [ %A, %BB1 ] ; <i32> [#uses=1] |
| 17 | br label %BB3 |
| Chris Lattner | 5f1ddb0 | 2002-05-22 19:22:45 +0000 | [diff] [blame] | 18 | } |