--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/CodeGen/ARM/pr34045-2.ll	Fri Oct 27 17:07:41 2017 +0900
@@ -0,0 +1,25 @@
+; RUN: llc < %s -mtriple thumbv7 | FileCheck %s
+
+define hidden void @foo(i32* %ptr, i1 zeroext %long_blocks) {
+entry:
+; This test is actually checking that no cycle is introduced but at least we
+; want to see one umull.
+; CHECK: umull
+  %0 = load i32, i32* %ptr, align 4
+  %conv.i.i13.i = zext i32 %0 to i64
+  %mul.i.i14.i = mul nuw nsw i64 %conv.i.i13.i, 18782
+  %1 = load i32, i32* undef, align 4
+  %conv4.i.i16.i = zext i32 %1 to i64
+  %add5.i.i17.i = add nuw nsw i64 %mul.i.i14.i, %conv4.i.i16.i
+  %shr.i.i18.i = lshr i64 %add5.i.i17.i, 32
+  %add10.i.i20.i = add nuw nsw i64 %shr.i.i18.i, %add5.i.i17.i
+  %conv11.i.i21.i = trunc i64 %add10.i.i20.i to i32
+  %x.0.neg.i.i26.i = sub i32 -2, %conv11.i.i21.i
+  %sub.i.i27.i = add i32 %x.0.neg.i.i26.i, 0
+  store i32 %sub.i.i27.i, i32* %ptr, align 4
+  br label %while.body.i
+
+while.body.i:                                     ; preds = %while.body.i, %entry
+  br label %while.body.i
+}
+