On Tue, May 28, 2019 at 04:07:44AM +0200, Marek Vasut wrote: > On 5/28/19 4:06 AM, Tom Rini wrote: > > On Tue, May 28, 2019 at 03:49:13AM +0200, Marek Vasut wrote: > > > >> If the source and destination buffer address is identical, there is > >> no need to memcpy() the content. Skip the memcpy() in such a case. > >> > >> Signed-off-by: Marek Vasut <[email protected]> > >> Cc: Michal Simek <[email protected]> > >> Cc: Tom Rini <[email protected]> > > > > Shouldn't memcpy catch that itself? > > > memcpy(3) says > The memcpy() function copies n bytes from memory area src to > memory area dest. The memory areas must not overlap. Use memmove(3) if > the memory areas do overlap.
OK, and shouldn't memcpy optimize that case? Does it usually? -- Tom
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