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diff --git a/test/Transforms/TailDup/2003-07-22-InfiniteLoop.ll b/test/Transforms/TailDup/2003-07-22-InfiniteLoop.ll
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--- /dev/null
+++ b/test/Transforms/TailDup/2003-07-22-InfiniteLoop.ll
@@ -0,0 +1,11 @@
+; RUN: opt < %s -tailduplicate -disable-output
+
+define i32 @sum() {
+entry:
+ br label %loopentry
+loopentry: ; preds = %loopentry, %entry
+ %i.0 = phi i32 [ 1, %entry ], [ %tmp.3, %loopentry ] ; <i32> [#uses=1]
+ %tmp.3 = add i32 %i.0, 1 ; <i32> [#uses=1]
+ br label %loopentry
+}
+