Chiebot-Mirror/FFmpeg - FFmpeg - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Rémi Denis-Courmont	54b1970c60	lavu/riscv: fix return type	6 months ago
Rémi Denis-Courmont	39ced529b0	lavu/riscv: implement floating point clips Unlike x86, fmin/fmax are single instructions, not function calls. They are much much faster than doing a comparison, then branching based on its results. With this, audiodsp.vector_clipf gets almost twice as fast, and a properly unrollled version of it gets 4-5x faster, on SiFive-U74. This is only the low-hanging fruit: FFMIN and FFMAX are presumably affected as well. This likely applies to other instruction sets with native IEEE floats, especially those lacking a conditional select instruction.	7 months ago
Rémi Denis-Courmont	f6d0a41c8c	lavu/riscv: use Zbb CLZ/CTZ/CLZW/CTZW at run-time Zbb static Zbb dynamic I baseline clz 0.668032642 1.336072283 19.552376803 clzl 0.668092643 1.336181786 26.110855571 ctz 1.336208533 3.340209702 26.054869008 ctzl 1.336247784 3.340362457 26.055266290 (seconds for 1 billion iterations on a SiFive-U74 core)	8 months ago
Rémi Denis-Courmont	98db140910	lavu/riscv: use Zbb CPOP/CPOPW at run-time Zbb static Zbb dynamic I baseline popcount 1.336129286 3.469067758 20.146362909 popcountl 1.336322291 3.340292968 20.224829821 (seconds for 1 billion iterations on a SiFive-U74 core)	8 months ago
Rémi Denis-Courmont	0e580806d8	riscv/intmath: use builtins for counting ones As with the earlier bswap change, all versions of GCC and Clang that support RISC-V support the popcount built-ins, so we can just use them instead of inline assembler.	2 years ago
Rémi Denis-Courmont	6df3ad9687	lavu/riscv: fix off-by-one in bit-magnitude clip	2 years ago
Rémi Denis-Courmont	a5ce44f301	lavu/riscv: fix av_clip_int16 Some serious copy-paste / squash / rebase mismanipulation here. Signed-off-by: James Almer <jamrial@gmail.com>	2 years ago
Rémi Denis-Courmont	c177108ae1	lavu/riscv: add <intmath.h> optimisations This provides some micro-optimisations for signed integer clipping, and support for bit weight with the Zbb extension.	2 years ago