Index: lib/Headers/emmintrin.h
===================================================================
--- lib/Headers/emmintrin.h
+++ lib/Headers/emmintrin.h
@@ -846,7 +846,7 @@
 static __inline__ __m128i __attribute__((__always_inline__, __nodebug__))
 _mm_slli_epi32(__m128i __a, int __count)
 {
-  return (__m128i)__builtin_ia32_pslldi128((__v4si)__a, __count);
+  return (__m128i)((__v4si)__a << (__v4si){__count, __count, __count, __count});
 }
 
 static __inline__ __m128i __attribute__((__always_inline__, __nodebug__))