x86/intreadwrite.h: add missing preprocessor checks

Removed by accident in the previous commits. This makes the code only run when
compiled with GCC and Clang like before. Support for other compilers like msvc
can be added later.

Signed-off-by: James Almer <jamrial@gmail.com>

libavutil/x86/intreadwrite.h

@@ -22,16 +22,16 @@
 #define AVUTIL_X86_INTREADWRITE_H
 
 #include <stdint.h>
-#if HAVE_INTRINSICS_SSE
+#if HAVE_INTRINSICS_SSE && defined(__SSE__)
 #include <immintrin.h>
 #endif
-#if HAVE_INTRINSICS_SSE2
+#if HAVE_INTRINSICS_SSE2 && defined(__SSE2__)
 #include <emmintrin.h>
 #endif
 #include "config.h"
 #include "libavutil/attributes.h"
 
-#if HAVE_INTRINSICS_SSE
+#if HAVE_INTRINSICS_SSE && defined(__SSE__)
 
 #define AV_COPY128 AV_COPY128
 static av_always_inline void AV_COPY128(void *d, const void *s)
@@ -40,9 +40,9 @@ static av_always_inline void AV_COPY128(void *d, const void *s)
     _mm_store_ps(d, tmp);
 }
 
-#endif /* HAVE_INTRINSICS_SSE */
+#endif /* HAVE_INTRINSICS_SSE && defined(__SSE__) */
 
-#if HAVE_INTRINSICS_SSE2
+#if HAVE_INTRINSICS_SSE2 && defined(__SSE2__)
 
 #define AV_ZERO128 AV_ZERO128
 static av_always_inline void AV_ZERO128(void *d)
@@ -51,6 +51,6 @@ static av_always_inline void AV_ZERO128(void *d)
     _mm_store_si128(d, zero);
 }
 
-#endif /* HAVE_INTRINSICS_SSE2 */
+#endif /* HAVE_INTRINSICS_SSE2 && defined(__SSE2__) */
 
 #endif /* AVUTIL_X86_INTREADWRITE_H */