Gentoo Archives: gentoo-dev

From: Mike Gilbert <floppym@g.o>
To: Gentoo Dev <gentoo-dev@l.g.o>
Subject: Re: [gentoo-dev] Review: desc/cpu_flags_x86.desc
Date: Mon, 19 Jan 2015 01:14:26
Message-Id: CAJ0EP42fuWCd862F6Tr=pHJ67N944+2gMG9ouh_u+imCszEeKw@mail.gmail.com
In Reply to: Re: [gentoo-dev] Review: desc/cpu_flags_x86.desc by Patrick Lauer
1 On Sun, Jan 18, 2015 at 7:13 PM, Patrick Lauer <patrick@g.o> wrote:
2 >> 3dnow - Use the 3DNow! instruction set
3 >> 3dnowext - Use the Enhanced 3DNow! instruction set
4 >
5 > Those are kinda mostly dead (no new CPUs have them anymore)
6 >
7
8 I'm sure there are still plenty of these out in the wild. I know I have one.
9
10 > So half of those are obsolete/dead, and the other half you need to do proper
11 > feature detection - why do we want that as useflags again?
12
13 The alternative would be to hard-disable them for the relevant
14 packages where runtime detection is not implemented (probably rare).