On Wed, Dec 13, 2023, at 02:18, Charlie Jenkins wrote: > This csum_fold implementation introduced into arch/arc by Vineet Gupta > is better than the default implementation on at least arc, x86, and > riscv. Using GCC trunk and compiling non-inlined version, this > implementation has 41.6667%, 25% fewer instructions on riscv64, x86-64 > respectively with -O3 optimization. Most implmentations override this > default in asm, but this should be more performant than all of those > other implementations except for arm which has barrel shifting and > sparc32 which has a carry flag. > > Signed-off-by: Charlie Jenkins <charlie@xxxxxxxxxxxx> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
