1 files changed, 27 insertions, 0 deletions
diff --git a/test/Transforms/LoopRotate/pr33701.ll b/test/Transforms/LoopRotate/pr33701.ll
new file mode 100644
index 000000000000..ed162b120982
--- /dev/null
+++ b/test/Transforms/LoopRotate/pr33701.ll
@@ -0,0 +1,27 @@
+; RUN: opt < %s -loop-rotate -verify-dom-info -verify-loop-info -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
+}