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To:	gentoo-dev@g.o
From:	Matt Turner <mattst88@g.o>
Subject:	Re: Re: Move x86/amd64 CPU extensions USE flags to a new USE_EXPAND variable
Date:	Sun, 12 Dec 2010 16:54:44 +0000

On Sun, Dec 12, 2010 at 6:34 AM, Ryan Hill <dirtyepic@g.o> wrote:
> On Sat, 11 Dec 2010 18:57:58 +0100
> sse5 was a draft, it was never implemented.

I don't think it's quite as simple as that. According to Wikipedia,
AMD has significantly scaled back SSE5 so that it won't interfere with
AVX, but it will be implemented in Bulldozer and will consist of the
new  XOP, FMA4, and CVT16 instruction sets.

Strangely enough, media-libs/spandsp already has an SSE5 USE flag.

Matt

References:

Move x86/amd64 CPU extensions USE flags to a new USE_EXPAND variable
-- Jeroen Roovers

Re: Move x86/amd64 CPU extensions USE flags to a new USE_EXPAND variable
-- Ryan Hill

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Updated Jun 29, 2012

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