Messages in this thread | | | Date | Tue, 22 Jun 2021 04:09:14 +0300 | From | Nick Kossifidis <> | Subject | Re: [PATCH v3 0/3] riscv: optimized mem* functions |
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Hello Matteo,
Στις 2021-06-17 18:27, Matteo Croce έγραψε: > From: Matteo Croce <mcroce@microsoft.com> > > Replace the assembly mem{cpy,move,set} with C equivalent. > > Try to access RAM with the largest bit width possible, but without > doing unaligned accesses. > > Tested on a BeagleV Starlight with a SiFive U74 core, where the > improvement is noticeable. >
There are already generic C implementations for memcpy/memmove/memset at https://elixir.bootlin.com/linux/v5.13-rc7/source/lib/string.c#L871 but are doing one byte at a time, I suggest you update them to do word-by-word copy instead of introducing yet another memcpy/memmove C implementation on arch/riscv/.
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