diff --git a/test/CodeGen/X86/2008-01-08-IllegalCMP.ll b/test/CodeGen/X86/2008-01-08-IllegalCMP.ll
new file mode 100644
index 00000000000..fddfd4f3a48
--- /dev/null
+++ b/test/CodeGen/X86/2008-01-08-IllegalCMP.ll
@@ -0,0 +1,17 @@
+; RUN: llvm-as < %s | llc
+
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32"
+target triple = "i686-pc-linux-gnu"
+
+define i64 @__absvdi2(i64 %a) nounwind  {
+entry:
+	%w.0 = select i1 false, i64 0, i64 %a		; <i64> [#uses=2]
+	%tmp9 = icmp slt i64 %w.0, 0		; <i1> [#uses=1]
+	br i1 %tmp9, label %bb12, label %bb13
+
+bb12:		; preds = %entry
+	unreachable
+
+bb13:		; preds = %entry
+	ret i64 %w.0
+}