| Chandler Carruth | 1353f9a | 2017-04-27 18:45:20 +0000 | [diff] [blame] | 1 | ; RUN: opt -simple-loop-unswitch -disable-output < %s |
| 2 | ; PR10031 |
| 3 | |
| 4 | define i32 @test(i32 %command) { |
| 5 | entry: |
| 6 | br label %tailrecurse |
| 7 | |
| 8 | tailrecurse: ; preds = %if.then14, %tailrecurse, %entry |
| 9 | br i1 undef, label %if.then, label %tailrecurse |
| 10 | |
| 11 | if.then: ; preds = %tailrecurse |
| 12 | switch i32 %command, label %sw.bb [ |
| 13 | i32 2, label %land.lhs.true |
| 14 | i32 0, label %land.lhs.true |
| 15 | ] |
| 16 | |
| 17 | land.lhs.true: ; preds = %if.then, %if.then |
| 18 | br i1 undef, label %sw.bb, label %if.then14 |
| 19 | |
| 20 | if.then14: ; preds = %land.lhs.true |
| 21 | switch i32 %command, label %tailrecurse [ |
| 22 | i32 0, label %sw.bb |
| 23 | i32 1, label %sw.bb |
| 24 | ] |
| 25 | |
| 26 | sw.bb: ; preds = %if.then14 |
| 27 | unreachable |
| 28 | } |