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Fixed bug #736

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Don't use the SSE cache instruction in MMX code if SSE isn't available. :)
This commit is contained in:
Sam Lantinga
2009-12-16 03:02:31 +00:00
parent b06c70e89d
commit 1a0cbf83f1
1 changed files with 2 additions and 0 deletions
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2
src/video/SDL_blit_copy.c
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@@ -65,7 +65,9 @@ SDL_memcpyMMX(Uint8 * dst, const Uint8 * src, int len)
__m64 values[8];
for (i = len / 64; i--;) {
#ifdef __SSE__
_mm_prefetch(src, _MM_HINT_NTA);
#endif
values[0] = *(__m64 *) (src + 0);
values[1] = *(__m64 *) (src + 8);
values[2] = *(__m64 *) (src + 16);