diff --git a/test/CodeGen/X86/2007-05-15-maskmovq.ll b/test/CodeGen/X86/2007-05-15-maskmovq.ll
new file mode 100644
index 00000000000..d9836e4a8d5
--- /dev/null
+++ b/test/CodeGen/X86/2007-05-15-maskmovq.ll
@@ -0,0 +1,14 @@
+; RUN: llvm-as < %s | llc -mcpu=yonah
+
+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"
+target triple = "i686-apple-darwin8"
+
+define void @test(<1 x i64> %c64, <1 x i64> %mask1, i8* %P) {
+entry:
+	%tmp4 = bitcast <1 x i64> %mask1 to <8 x i8>		; <<8 x i8>> [#uses=1]
+	%tmp6 = bitcast <1 x i64> %c64 to <8 x i8>		; <<8 x i8>> [#uses=1]
+	tail call void @llvm.x86.mmx.maskmovq( <8 x i8> %tmp6, <8 x i8> %tmp4, i8* %P )
+	ret void
+}
+
+declare void @llvm.x86.mmx.maskmovq(<8 x i8>, <8 x i8>, i8*)