| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 1 | ; It is illegal to remove BB1 because it will mess up the PHI node! |
| 2 | ; |
| Dan Gohman | 3c7d308 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 3 | ; RUN: opt < %s -adce -S | grep BB1 |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 4 | |
| Tanya Lattner | 4c4d0b8 | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 5 | define i32 @test(i1 %C, i32 %A, i32 %B) { |
| 6 | ; <label>:0 |
| 7 | br i1 %C, label %BB1, label %BB2 |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 8 | |
| Tanya Lattner | 4c4d0b8 | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 9 | BB1: ; preds = %0 |
| 10 | br label %BB2 |
| 11 | |
| 12 | BB2: ; preds = %BB1, %0 |
| 13 | %R = phi i32 [ %A, %0 ], [ %B, %BB1 ] ; <i32> [#uses=1] |
| 14 | ret i32 %R |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 15 | } |
| Tanya Lattner | 4c4d0b8 | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 16 | |