Headers/xopintrin.h: Try to fix r158492. Did you mean, mm256?

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158521 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Headers/xopintrin.h b/lib/Headers/xopintrin.h
index e5b8d92..d107be4 100644
--- a/lib/Headers/xopintrin.h
+++ b/lib/Headers/xopintrin.h
@@ -395,15 +395,15 @@
 }
 
 static __inline__ __m256 __attribute__((__always_inline__, __nodebug__))
-_mm_frcz_ps(__m256 __A)
+_mm256_frcz_ps(__m256 __A)
 {
-  return (__m256)__builtin_ia32_vfrczps((__v4sf)__A);
+  return (__m256)__builtin_ia32_vfrczps256((__v8sf)__A);
 }
 
 static __inline__ __m256d __attribute__((__always_inline__, __nodebug__))
-_mm_frcz_pd(__m256d __A)
+_mm256_frcz_pd(__m256d __A)
 {
-  return (__m256d)__builtin_ia32_vfrczpd((__v2df)__A);
+  return (__m256d)__builtin_ia32_vfrczpd256((__v4df)__A);
 }
 
 #endif /* __XOP__ */