| Chris Lattner | 2733b30 | 2005-08-05 00:59:55 +0000 | [diff] [blame^] | 1 | ; RUN: llvm-as < %s | opt -condprop | llvm-dis | not grep phi |
| 2 | |
| 3 | declare bool %foo() |
| 4 | |
| 5 | int %test(uint %C) { |
| 6 | %Val = call bool %foo() |
| 7 | switch uint %C, label %T1 [ |
| 8 | uint 4, label %T2 |
| 9 | uint 17, label %T3 |
| 10 | ] |
| 11 | T1: |
| 12 | call void %a() |
| 13 | br label %Cont |
| 14 | T2: |
| 15 | call void %b() |
| 16 | br label %Cont |
| 17 | T3: |
| 18 | call void %c() |
| 19 | br label %Cont |
| 20 | |
| 21 | Cont: |
| 22 | ;; PHI becomes dead after threading T2 |
| 23 | %C2 = phi bool [%Val, %T1], [true, %T2], [%Val, %T3] |
| 24 | br bool %C2, label %L2, label %F2 |
| 25 | L2: |
| 26 | call void %d() |
| 27 | ret int 17 |
| 28 | F2: |
| 29 | call void %e() |
| 30 | ret int 1 |
| 31 | } |
| 32 | declare void %a() |
| 33 | declare void %b() |
| 34 | declare void %c() |
| 35 | declare void %d() |
| 36 | declare void %e() |