delena added inline comments. ================ Comment at: lib/Headers/mmintrin.h:446 @@ -445,2 +445,3 @@ #define _m_from_int _mm_cvtsi32_si64 +#define _m_from_int64 _mm_cvtsi64_m64 #define _m_to_int _mm_cvtsi64_si32 ---------------- Under X86_64 or always? http://reviews.llvm.org/D15572