diff --git a/lib/Target/X86/X86RegisterInfo.td b/lib/Target/X86/X86RegisterInfo.td
index 203722a6616..14d1e87c03c 100644
--- a/lib/Target/X86/X86RegisterInfo.td
+++ b/lib/Target/X86/X86RegisterInfo.td
@@ -455,8 +455,8 @@ def VR128 : RegisterClass<"X86", [v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
   let SubRegClasses = [(FR32 sub_ss), (FR64 sub_sd)];
 }
 
-def VR256 : RegisterClass<"X86", [v32i8, v8i32, v4i64, v8f32, v4f64], 256,
-                          (sequence "YMM%u", 0, 15)> {
+def VR256 : RegisterClass<"X86", [v32i8, v16i16, v8i32, v4i64, v8f32, v4f64],
+                          256, (sequence "YMM%u", 0, 15)> {
   let SubRegClasses = [(FR32 sub_ss), (FR64 sub_sd), (VR128 sub_xmm)];
 }