| Dan Gohman | b1e1e82 | 2009-09-08 16:50:01 +0000 | [diff] [blame] | 1 | ; RUN: opt %s -adce -simplifycfg | llvm-dis |
| Chris Lattner | 91c9337 | 2002-05-22 19:22:45 +0000 | [diff] [blame] | 2 | |
| Tanya Lattner | ec9a35a | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 3 | define i32 @Test(i32 %A, i32 %B) { |
| Chris Lattner | 91c9337 | 2002-05-22 19:22:45 +0000 | [diff] [blame] | 4 | BB1: |
| Tanya Lattner | ec9a35a | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 5 | br label %BB4 |
| 6 | |
| 7 | BB2: ; No predecessors! |
| 8 | br label %BB3 |
| 9 | |
| 10 | BB3: ; preds = %BB4, %BB2 |
| 11 | %ret = phi i32 [ %X, %BB4 ], [ %B, %BB2 ] ; <i32> [#uses=1] |
| 12 | ret i32 %ret |
| 13 | |
| 14 | BB4: ; preds = %BB1 |
| 15 | %X = phi i32 [ %A, %BB1 ] ; <i32> [#uses=1] |
| 16 | br label %BB3 |
| Chris Lattner | 91c9337 | 2002-05-22 19:22:45 +0000 | [diff] [blame] | 17 | } |
| Tanya Lattner | ec9a35a | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 18 | |
| 19 | |