diff --git a/test/CodeGen/X86/x86-64-shortint.ll b/test/CodeGen/X86/x86-64-shortint.ll
new file mode 100644
index 00000000000..30c750e3794
--- /dev/null
+++ b/test/CodeGen/X86/x86-64-shortint.ll
@@ -0,0 +1,13 @@
+; RUN: llvm-as < %s | llc | grep movswl
+
+target datalayout = "e-p:64:64"
+target triple = "x86_64-apple-darwin8"
+
+implementation   ; Functions:
+
+define void @bar(i16 zext  %A) {
+        tail call void @foo( i16 %A sext  )
+        ret void
+}
+declare void @foo(i16 sext )
+