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Date: Thu, 12 Mar 2015 01:07:56 +0300
From: Solar Designer <>
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:
> > 
> >
> > 
> > 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?


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