[FFmpeg-devel] [PATCH v4] mdct15: add assembly optimizations for the 15-point FFT
Michael Niedermayer
michael at niedermayer.cc
Fri Jun 23 23:18:22 EEST 2017
On Fri, Jun 23, 2017 at 02:51:37AM +0100, Rostislav Pehlivanov wrote:
> c: 1802 decicycles in fft15,16774635 runs, 2581 skips
> avx: 865 decicycles in fft15,16776378 runs, 838 skips
>
> Signed-off-by: Rostislav Pehlivanov <atomnuker at gmail.com>
> ---
> libavcodec/mdct15.c | 182 +++++++++++++++++++++----------------------
> libavcodec/mdct15.h | 26 +++----
> libavcodec/x86/Makefile | 2 +
> libavcodec/x86/mdct15.asm | 137 ++++++++++++++++++++++++++++++++
> libavcodec/x86/mdct15_init.c | 95 ++++++++++++++++++++++
> 5 files changed, 333 insertions(+), 109 deletions(-)
> create mode 100644 libavcodec/x86/mdct15.asm
> create mode 100644 libavcodec/x86/mdct15_init.c
seems to fail to build here:
libavcodec/x86/mdct15.asm:116: error: invalid combination of opcode and operands
libavcodec/x86/mdct15.asm:117: error: invalid combination of opcode and operands
libavcodec/x86/mdct15.asm:118: error: invalid combination of opcode and operands
make: *** [libavcodec/x86/mdct15.o] Error 1
X86ASM=nasm
nasm -v
NASM version 2.10.09 compiled on Dec 29 2013
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
The greatest way to live with honor in this world is to be what we pretend
to be. -- Socrates
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