Use system memset/memcpy on Mac OS X, since Apple hand-tunes these for each
processor they ship (and thus, it's likely to beat our code on PowerPC and
Intel and whatever variants or new archs show up later).
--- a/include/SDL_stdinc.h Tue May 29 12:01:07 2007 +0000
+++ b/include/SDL_stdinc.h Sun Jun 03 06:52:06 2007 +0000
@@ -234,7 +234,10 @@
extern DECLSPEC void * SDLCALL SDL_memset(void *dst, int c, size_t len);
#endif
-#if defined(__GNUC__) && defined(i386)
+/* We can count on memset existing on Mac OS X and being well-tuned. */
+#if defined(__MACH__) && defined(__APPLE__)
+#define SDL_memset4(dst, val, len) memset(dst, val, (len)*4)
+#elif defined(__GNUC__) && defined(i386)
#define SDL_memset4(dst, val, len) \
do { \
int u0, u1, u2; \
@@ -263,7 +266,10 @@
} while(0)
#endif
-#if defined(__GNUC__) && defined(i386)
+/* We can count on memcpy existing on Mac OS X and being well-tuned. */
+#if defined(__MACH__) && defined(__APPLE__)
+#define SDL_memcpy(dst, src, len) memcpy(dst, src, len)
+#elif defined(__GNUC__) && defined(i386)
#define SDL_memcpy(dst, src, len) \
do { \
int u0, u1, u2; \
@@ -292,7 +298,10 @@
#endif
#endif
-#if defined(__GNUC__) && defined(i386)
+/* We can count on memcpy existing on Mac OS X and being well-tuned. */
+#if defined(__MACH__) && defined(__APPLE__)
+#define SDL_memcpy4(dst, src, len) memcpy(dst, src, (len)*4)
+#elif defined(__GNUC__) && defined(i386)
#define SDL_memcpy4(dst, src, len) \
do { \
int ecx, edi, esi; \