FFmpeg

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History

Ganesh Ajjanagadde 5989add4ab lavu/x86/lls: add fma3 optimizations for update_lls

This improves accuracy (very slightly) and speed for processors having
fma3.

Sample benchmark (fate flac-16-lpc-cholesky, Haswell):
old:
5993610 decicycles in ff_lpc_calc_coefs,      64 runs,      0 skips
5951528 decicycles in ff_lpc_calc_coefs,     128 runs,      0 skips

new:
5252410 decicycles in ff_lpc_calc_coefs,      64 runs,      0 skips
5232869 decicycles in ff_lpc_calc_coefs,     128 runs,      0 skips

Tested with FATE and --disable-fma3, also examined contents of
lavu/lls-test.

Reviewed-by: James Almer <jamrial@gmail.com>
Reviewed-by: Henrik Gramner <henrik@gramner.com>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>

2016-01-15 16:46:13 -05:00

asm.h

avutil/x86/asm: rename REG_SP to REG_sp

2015-08-22 02:56:53 +02:00

bswap.h

avutil/x86/bswap: Remove warning about bswap intrinsics with msvc.

2015-11-23 23:03:32 +11:00

cpu.c

lavu: add AESNI CPU flag

2015-10-28 04:23:14 -05:00

cpu.h

lavu: add AESNI CPU flag