Displaying 1 result from an estimated 1 matches for "have_mmx".
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dhave_mmx
2003 May 08
3
MMX and extended-MMX acceleration patch for encoding
...(as found experimentally by
gprof). These are in fact wrappers to allow switching between
implementation variants and I have implemented several variants: C, MMX
assembly and MMXEXT assembly (something like SSE maybe, recent extensions
apparently, found in PIII and Athlon).
Preprocessor directive HAVE_MMX and HAVE_MMXEXT allow to select at
compile-time which code gets used for real. So, use CFLAGS="-DHAVE_MMX" to
get the MMX implementation, and CFLAGS="-DHAVE_MMX -DHAVE_MMXEXT" to get
the MMXEXT implementation (which uses both MMX and extMMX instructions).
The wrappers also allo...