Re: [FFmpeg-devel] [PATCH] lavc/opusdsp: RISC-V F deemphasis

Le torstaina 29. syyskuuta 2022, 22.51.59 EEST r...@remlab.net a écrit : > From: Rémi Denis-Courmont > > This saves almost exactly 25% on SiFive U74. > > deemphasis_c: 11536.2 > deemphasis_rvf: 8654.2 One can get the same result with the C version using -ffast-math. Forget this patch. --

Re: [FFmpeg-devel] [PATCH] lavc/opusdsp: RISC-V F deemphasis

Le torstaina 29. syyskuuta 2022, 22.51.59 EEST r...@remlab.net a écrit : > From: Rémi Denis-Courmont > > This saves almost exactly 25% on SiFive U74. > > deemphasis_c: 11536.2 > deemphasis_rvf: 8654.2 So well, if you trust godbolt.org, some better compiler is able to optimise the C version

[FFmpeg-devel] [PATCH] lavc/opusdsp: RISC-V F deemphasis

From: Rémi Denis-Courmont This saves almost exactly 25% on SiFive U74. deemphasis_c: 11536.2 deemphasis_rvf: 8654.2 --- libavcodec/opusdsp.c| 2 ++ libavcodec/opusdsp.h| 1 + libavcodec/riscv/Makefile | 2 ++ libavcodec/riscv/opusdsp_init.c | 36