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| author | Rémi Denis-Courmont <remi@remlab.net> | 2024-05-16 17:13:22 +0300 |
|---|---|---|
| committer | Rémi Denis-Courmont <remi@remlab.net> | 2024-05-19 10:03:49 +0300 |
| commit | 4ad5b9c8db737f3018360e179121fc0a9b7e7d1b (patch) | |
| tree | d9c2f3ab5328bcc4283243d3c538efdd876ca49e /libpostproc | |
| parent | 8b8b555de008213894a29e453f27bf9de1c990dc (diff) | |
| download | ffmpeg-4ad5b9c8db737f3018360e179121fc0a9b7e7d1b.tar.gz | |
lavc/startcode: add R-V Zbb startcode_find_candidate
The main loop processes 8 bytes in 5 instructions.
For comparison, the optimal plain strnlen() requires 4 instructions per
byte (6.4x worse): LBU; ADDI; BEQZ; BNE. The current libavcodec C code
involves 5 instructions per byte (8x worse). Actual benchmarks may be
slightly less favourable due to latency from ORC.B to BNE.
Diffstat (limited to 'libpostproc')
0 files changed, 0 insertions, 0 deletions