| Chris Lattner | 72a406e | 2005-01-01 16:00:56 +0000 | [diff] [blame^] | 1 | ; RUN: llvm-as < %s | opt -simplifycfg | llvm-dis | not grep seteq |
| 2 | |
| 3 | ; Check that simplifycfg deletes a dead 'seteq' instruction when it |
| 4 | ; folds a conditional branch into a switch instruction. |
| 5 | |
| 6 | declare void %foo() |
| 7 | declare void %bar() |
| 8 | |
| 9 | void %testcfg(uint %V) { |
| 10 | %C = seteq uint %V, 18 |
| 11 | %D = seteq uint %V, 180 |
| 12 | %E = or bool %C, %D |
| 13 | br bool %E, label %L1, label %Sw |
| 14 | Sw: |
| 15 | switch uint %V, label %L1 [ |
| 16 | uint 15, label %L2 |
| 17 | uint 16, label %L2 |
| 18 | ] |
| 19 | L1: |
| 20 | call void %foo() |
| 21 | ret void |
| 22 | L2: |
| 23 | call void %bar() |
| 24 | ret void |
| 25 | } |
| 26 | |