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Message-ID: <CA+TsHUCkSmJ=o4z0caCp6zSg0XXvXzCvebGfK4P=1pV0s-xb4A@mail.gmail.com>
Date: Mon, 9 Jul 2012 10:15:54 +0530
From: Sayantan Datta <std2048@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: Rotate and bitselect investigation
On Mon, Jul 9, 2012 at 6:27 AM, Solar Designer <solar@...nwall.com> wrote:
> On Mon, Jul 09, 2012 at 01:24:14AM +0530, Sayantan Datta wrote:
> > I was able to squeeze in another bitselect optimization in the kernel
> > resulting in 2% performance jump.
>
> Where did you put that other bitselect()?
>
F(x,y,z) ((x & y) | (z & (x | y)))==F(x,y,z) (bitselect(x, y, z) ^
bitselect(x, (uint)0, y))
>
> This is not in magnum-jumbo yet. Can you commit your latest stuff,
> please?
>
Done
Sayantan
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