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47 lines
1016 B
C
47 lines
1016 B
C
#include <stdlib.h> /* size_t */
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#include <config.h>
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/* MMX memcpy stuff taken from MPlayer (http://www.mplayerhq.hu) */
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#define BLOCK_SIZE 4096
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#define CONFUSION_FACTOR 0
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//Feel free to fine-tune the above 2, it might be possible to get some speedup with them :)
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#undef HAVE_MMX1
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#ifndef MMXEXT
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/* means: mmx v.1. Note: Since we added alignment of destinition it speedups
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of memory copying on PentMMX, Celeron-1 and P2 upto 12% versus
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standard (non MMX-optimized) version.
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Note: on K6-2+ it speedups memory copying upto 25% and
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on K7 and P3 about 500% (5 times). */
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#define HAVE_MMX1
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#endif
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#undef MMREG_SIZE
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#define MMREG_SIZE 64 //8
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#undef PREFETCH
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#undef EMMS
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#ifdef MMXEXT
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#define PREFETCH "prefetchnta"
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#else
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#define PREFETCH "/nop"
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#endif
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#define EMMS "emms"
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#undef MOVNTQ
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#ifdef MMXEXT
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#define MOVNTQ "movntq"
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#else
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#define MOVNTQ "movq"
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#endif
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#undef MIN_LEN
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#ifdef HAVE_MMX1
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#define MIN_LEN 0x800 /* 2K blocks */
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#else
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#define MIN_LEN 0x40 /* 64-byte blocks */
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#endif
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