| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 1 | ; RUN: llvm-upgrade < %s | llvm-as | opt -condprop | llvm-dis | not grep phi |
| 2 | |
| 3 | int %test(uint %C, bool %Val) { |
| 4 | switch uint %C, label %T1 [ |
| 5 | uint 4, label %T2 |
| 6 | uint 17, label %T3 |
| 7 | ] |
| 8 | T1: |
| 9 | call void %a() |
| 10 | br label %Cont |
| 11 | T2: |
| 12 | call void %b() |
| 13 | br label %Cont |
| 14 | T3: |
| 15 | call void %c() |
| 16 | br label %Cont |
| 17 | |
| 18 | Cont: |
| 19 | ;; PHI becomes dead after threading T2 |
| 20 | %C2 = phi bool [%Val, %T1], [true, %T2], [%Val, %T3] |
| 21 | br bool %C2, label %L2, label %F2 |
| 22 | L2: |
| 23 | call void %d() |
| 24 | ret int 17 |
| 25 | F2: |
| 26 | call void %e() |
| 27 | ret int 1 |
| 28 | } |
| 29 | declare void %a() |
| 30 | declare void %b() |
| 31 | declare void %c() |
| 32 | declare void %d() |
| 33 | declare void %e() |