| Chris Lattner | 277f651 | 2002-05-22 20:46:30 +0000 | [diff] [blame] | 1 | ; It is illegal to remove BB1 because it will mess up the PHI node! |
| 2 | ; |
| Dan Gohman | f2f6ce6 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 3 | ; RUN: opt < %s -adce -S | grep BB1 |
| Chris Lattner | 277f651 | 2002-05-22 20:46:30 +0000 | [diff] [blame] | 4 | |
| Tanya Lattner | ec9a35a | 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 |
| Chris Lattner | 277f651 | 2002-05-22 20:46:30 +0000 | [diff] [blame] | 8 | |
| Tanya Lattner | ec9a35a | 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 |
| Chris Lattner | 277f651 | 2002-05-22 20:46:30 +0000 | [diff] [blame] | 15 | } |
| Tanya Lattner | ec9a35a | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 16 | |