diff --git a/clang/lib/Headers/avxintrin.h b/clang/lib/Headers/avxintrin.h
--- a/clang/lib/Headers/avxintrin.h
+++ b/clang/lib/Headers/avxintrin.h
@@ -3177,7 +3177,7 @@
 ///    A pointer to a 256-bit integer vector containing integer values.
 /// \returns A 256-bit integer vector containing the moved values.
 static __inline __m256i __DEFAULT_FN_ATTRS
-_mm256_lddqu_si256(__m256i const *__p)
+_mm256_lddqu_si256(__m256i_u const *__p)
 {
   return (__m256i)__builtin_ia32_lddqu256((char const *)__p);
 }
diff --git a/clang/lib/Headers/pmmintrin.h b/clang/lib/Headers/pmmintrin.h
--- a/clang/lib/Headers/pmmintrin.h
+++ b/clang/lib/Headers/pmmintrin.h
@@ -35,7 +35,7 @@
 ///    A pointer to a 128-bit integer vector containing integer values.
 /// \returns A 128-bit vector containing the moved values.
 static __inline__ __m128i __DEFAULT_FN_ATTRS
-_mm_lddqu_si128(__m128i const *__p)
+_mm_lddqu_si128(__m128i_u const *__p)
 {
   return (__m128i)__builtin_ia32_lddqu((char const *)__p);
 }