Date: Thu, 12 Mar 2015 01:07:56 +0300 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: bitslice MD*/SHA*, AVX2 On Wed, Mar 11, 2015 at 10:45:19PM +0100, magnum wrote: > On 2015-03-11 22:21, Solar Designer wrote: > > BTW, it appears that we don't currently use this optimization. Not even > > in the copy of my portable MD5 implementation in JtR, which I've since > > updated to include this optimization here: > > > > http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5 > > > > In my testing, this might not be beneficial on 2-operand archs such as > > plain x86, but it should be on 3-operand archs such as AVX. So we > > should update the code in sse-intrinsics.c, and benchmark. And we should > > update the plain C code anyway, such as for non-x86 archs (which are > > mostly 3-operand RISC). > > > > magnum, Jim? > > Yeah... unless we have some GSoC candidate wanting to show his/her > teeth? That would be a good start! OK, I don't mind keeping this on hold until GSoC student application period ends. Would you track it, so it doesn't get forgotten in case no GSoC candidate takes care of it? Alexander
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