On Thu, Aug 23, 2018 at 02:40:35PM -0700, Conrad Meyer wrote: > On Thu, Aug 23, 2018 at 11:19 AM, Alex Richardson > <arichard...@freebsd.org> wrote: > > Author: arichardson > > Date: Thu Aug 23 18:19:33 2018 > > New Revision: 338270 > > URL: https://svnweb.freebsd.org/changeset/base/338270 > > > > Log: > > Don't build skein_block_asm.s if we don't have an as binary > >... > > It might also be better to just > > compile the C file in userspace since the compiler can the use SSE/AVX. > > FYI, in my (limited) testing, the hand-written assembly has something > like 50% performance advantage over the reference C implementation, > even with -march=native, etc. Using the reference C version is > totally fine for bootstrapping, but the compiler is not yet smart > enough to write the assembler versions.
Thanks for doing this. Sounds like we should keep the option to build if you have a GNU as around. -- Brooks
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