On Tue, Jan 20, 2026 at 02:58:51PM +0800, Feng Jiang wrote: > Add an assembly implementation of strchr() for RISC-V. > > By eliminating stack frame management (prologue/epilogue) and optimizing > the function entries, the assembly version provides significant relative > gains for short strings where the fixed overhead of the C function is > most prominent. As the string length increases, the performance converges > with the byte-oriented scan logic. > > Benchmark results (QEMU TCG, rv64): > Length | Original (MB/s) | Optimized (MB/s) | Improvement > -------|-----------------|------------------|------------ > 1 B | 21 | 23 | +9.5% > 7 B | 118 | 126 | +6.7% > 16 B | 200 | 208 | +4.0% > 512 B | 375 | 399 | +6.4% > 4096 B | 395 | 401 | +1.5%
> Suggested-by: Andy Shevchenko <[email protected]> Wrong tag. -- With Best Regards, Andy Shevchenko
