| Chris Lattner | 25743e9 | 2003-03-05 20:35:24 +0000 | [diff] [blame] | 1 | ; Test merging of blocks with phi nodes. |
| 2 | ; |
| Misha Brukman | edf4bab | 2003-09-16 15:29:54 +0000 | [diff] [blame] | 3 | ; RUN: llvm-as < %s | opt -simplifycfg | llvm-dis | not grep 'N:' |
| Chris Lattner | 25743e9 | 2003-03-05 20:35:24 +0000 | [diff] [blame] | 4 | ; |
| 5 | |
| 6 | int %test(bool %a) { |
| 7 | Q: |
| 8 | br bool %a, label %N, label %M |
| 9 | N: |
| 10 | br label %M |
| 11 | M: |
| 12 | ; It's ok to merge N and M because the incoming values for W are the |
| 13 | ; same for both cases... |
| 14 | %W = phi int [2, %N], [2, %Q] |
| 15 | %R = add int %W, 1 |
| 16 | ret int %R |
| 17 | } |
| 18 | |