| ; RUN: opt < %s -passes=loop-rotate -verify-dom-info -verify-loop-info -verify-memoryssa -disable-output | |
| define void @func() { | |
| bb0: | |
| br label %bb1 | |
| bb1: ; preds = %bb4, %bb0 | |
| %0 = phi i16 [ %2, %bb4 ], [ 0, %bb0 ] | |
| %1 = icmp sle i16 %0, 2 | |
| br i1 %1, label %bb2, label %bb5 | |
| bb2: ; preds = %bb1 | |
| br i1 undef, label %bb6, label %bb4 | |
| bb3: ; No predecessors! | |
| br label %bb6 | |
| bb4: ; preds = %bb2 | |
| %2 = add i16 undef, 1 | |
| br label %bb1 | |
| bb5: ; preds = %bb1 | |
| br label %bb6 | |
| bb6: ; preds = %bb5, %bb3, %bb2 | |
| unreachable | |
| } |