diff --git a/test/Regression/Transforms/IndVarsSimplify/2006-09-20-LFTR-Crash.ll b/test/Regression/Transforms/IndVarsSimplify/2006-09-20-LFTR-Crash.ll
new file mode 100644
index 00000000000..eb3b6594df2
--- /dev/null
+++ b/test/Regression/Transforms/IndVarsSimplify/2006-09-20-LFTR-Crash.ll
@@ -0,0 +1,46 @@
+; RUN: llvm-as < %s | opt -indvars -disable-output
+
+	%struct.p7prior_s = type { int, int, [200 x float], [200 x [7 x float]], int, [200 x float], [200 x [20 x float]], int, [200 x float], [200 x [20 x float]] }
+
+implementation   ; Functions:
+
+void %P7DefaultPrior() {
+entry:
+	switch int 0, label %UnifiedReturnBlock [
+		 int 2, label %bb160
+		 int 3, label %bb
+	]
+
+bb:		; preds = %entry
+	br bool false, label %cond_true.i, label %sre_malloc.exit
+
+cond_true.i:		; preds = %bb
+	unreachable
+
+sre_malloc.exit:		; preds = %bb
+	br label %cond_true
+
+cond_true:		; preds = %cond_true66, %cond_true, %sre_malloc.exit
+	%tmp59 = phi int [ 1, %sre_malloc.exit ], [ %phitmp, %cond_true66 ], [ %tmp59, %cond_true ]		; <int> [#uses=2]
+	%indvar245.0.ph = phi uint [ 0, %sre_malloc.exit ], [ %indvar.next246, %cond_true66 ], [ %indvar245.0.ph, %cond_true ]		; <uint> [#uses=2]
+	br bool false, label %bb57, label %cond_true
+
+bb57:		; preds = %cond_true
+	%tmp65 = setgt int 0, %tmp59		; <bool> [#uses=1]
+	%indvar.next246 = add uint %indvar245.0.ph, 1		; <uint> [#uses=2]
+	br bool %tmp65, label %cond_true66, label %bb69
+
+cond_true66:		; preds = %bb57
+	%q.1.0 = cast uint %indvar.next246 to int		; <int> [#uses=1]
+	%phitmp = add int %q.1.0, 1		; <int> [#uses=1]
+	br label %cond_true
+
+bb69:		; preds = %bb57
+	ret void
+
+bb160:		; preds = %entry
+	ret void
+
+UnifiedReturnBlock:		; preds = %entry
+	ret void
+}