--- /dev/null
+; RUN: llc < %s -mtriple=arm-apple-darwin | FileCheck %s
+; RUN: llc < %s -mtriple=thumbv6-apple-darwin | FileCheck -check-prefix=T2 %s
+
+%struct.Foo = type { i8* }
+
+define %struct.Foo* @_ZN3Foo7collectEj(%struct.Foo* %this, i32 %acc) nounwind readonly align 2 {
+entry:
+ %scevgep = getelementptr %struct.Foo* %this, i32 1
+ br label %tailrecurse
+
+tailrecurse: ; preds = %sw.bb, %entry
+ %lsr.iv2 = phi %struct.Foo* [ %scevgep3, %sw.bb ], [ %scevgep, %entry ]
+ %lsr.iv = phi i32 [ %lsr.iv.next, %sw.bb ], [ 1, %entry ]
+ %acc.tr = phi i32 [ %or, %sw.bb ], [ %acc, %entry ]
+ %lsr.iv24 = bitcast %struct.Foo* %lsr.iv2 to i8**
+ %scevgep5 = getelementptr i8** %lsr.iv24, i32 -1
+ %tmp2 = load i8** %scevgep5
+ %0 = ptrtoint i8* %tmp2 to i32
+
+; CHECK: and lr, r12, #3
+; CHECK-NEXT: tst r12, #3
+; CHECK-NEXT: beq LBB0_4
+
+; T2: movs r5, #3
+; T2-NEXT: mov r6, r4
+; T2-NEXT: ands r6, r5
+; T2-NEXT: tst r4, r5
+; T2-NEXT: beq LBB0_5
+
+ %and = and i32 %0, 3
+ %tst = icmp eq i32 %and, 0
+ br i1 %tst, label %sw.bb, label %tailrecurse.switch
+
+tailrecurse.switch: ; preds = %tailrecurse
+ switch i32 %and, label %sw.epilog [
+ i32 1, label %sw.bb
+ i32 3, label %sw.bb6
+ i32 2, label %sw.bb8
+ ]
+
+sw.bb: ; preds = %tailrecurse.switch, %tailrecurse
+ %shl = shl i32 %acc.tr, 1
+ %or = or i32 %and, %shl
+ %lsr.iv.next = add i32 %lsr.iv, 1
+ %scevgep3 = getelementptr %struct.Foo* %lsr.iv2, i32 1
+ br label %tailrecurse
+
+sw.bb6: ; preds = %tailrecurse.switch
+ ret %struct.Foo* %lsr.iv2
+
+sw.bb8: ; preds = %tailrecurse.switch
+ %tmp1 = add i32 %acc.tr, %lsr.iv
+ %add.ptr11 = getelementptr inbounds %struct.Foo* %this, i32 %tmp1
+ ret %struct.Foo* %add.ptr11
+
+sw.epilog: ; preds = %tailrecurse.switch
+ ret %struct.Foo* undef
+}