| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame^] | 1 | ; This test checks to make sure that 'br X, Dest, Dest' is folded into |
| 2 | ; 'br Dest'. This can only happen after the 'Z' block is eliminated. This is |
| 3 | ; due to the fact that the SimplifyCFG function does not use |
| 4 | ; the ConstantFoldTerminator function. |
| 5 | |
| 6 | ; RUN: llvm-upgrade < %s | llvm-as | opt -simplifycfg | llvm-dis | \ |
| 7 | ; RUN: not grep {br bool %c2} |
| 8 | |
| 9 | declare void %noop() |
| 10 | |
| 11 | int %test(bool %c1, bool %c2) { |
| 12 | call void %noop() |
| 13 | br bool %c1, label %A, label %Y |
| 14 | A: |
| 15 | call void %noop() |
| 16 | br bool %c2, label %Z, label %X ; Can be converted to unconditional br |
| 17 | Z: |
| 18 | br label %X |
| 19 | X: |
| 20 | call void %noop() |
| 21 | ret int 0 |
| 22 | Y: |
| 23 | call void %noop() |
| 24 | br label %X |
| 25 | } |