On Fri, May 4, 2018 at 5:53 PM, Brooks Davis <bro...@freebsd.org> wrote:
> On Fri, May 04, 2018 at 04:00:48AM +0000, Mateusz Guzik wrote: > > Author: mjg > > Date: Fri May 4 04:00:48 2018 > > New Revision: 333240 > > URL: https://svnweb.freebsd.org/changeset/base/333240 > > > > Log: > > Allow __builtin_memmove instead of bcopy for small buffers of known > size > > What is the justification for forcing a size rather than using the > compiler's built-in fallback to memmove? Is the kernel compilation > environment disabling that? > > It will fallback to memmove which is super pessimized as being wrapped around bcopy. These limits will get lifted after the fallback routines get sorted out. -- Mateusz Guzik <mjguzik gmail.com> _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
