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Message-ID: <885a904cac8613317db8da241a0ba8c9@smtp.hushmail.com>
Date: Tue, 22 Oct 2013 14:22:43 +0200
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: OpenCL vectorizing how-to.
On 2013-10-22 14:10, magnum wrote:
> Maybe in the long run they are right. Or maybe future versions of
> their optimizers will be able to analyze pre-vectorized code and
> decide whether it could be used without "re-vectorizing".
And ultimately, future optimizers will hopefully make twice as good
vectorized code from scalar source than any human can produce anyway.
Optimizing plain C code (for CPU) was once a rewarding art, but nowadays
it's often just a Bad Idea because it just confuses the optimizer and
stops it from producing much better code than you could think of anyway.
magnum
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