Gentoo Archives: gentoo-amd64

From: Andrei Slavoiu <ansla80@×××××.com>
To: gentoo-amd64@l.g.o
Subject: Re: [gentoo-amd64] About gcc 4.1.1
Date: Wed, 30 Aug 2006 19:42:10
Message-Id: 20060830194019.48914.qmail@web31605.mail.mud.yahoo.com
In Reply to: [gentoo-amd64] About gcc 4.1.1 by "Bráulio Oliveira"
1 --- Bráulio Oliveira <brauliobo@×××××.com> wrote:
2 > CFLAGS="-O2 -pipe -mtune=athlon64 -march=athlon64
3 > -mmmx -msse -msse2 -m3dnow"
4 Somebody else already pointed out that gcc 4.1.1 will
5 soon go stable on all architectures, but I have some
6 comments on your compiler flags.
7 First, -mtune is implied when you use -march, for any
8 architecture.
9 Second, on amd64 -mmmx, -msse, -msse2 and -m3dnow are
10 the default as they are part of the ISA.
11 So in conclusion you could use CFLAGS="-O2 -pipe
12 -march=athlon64" with the exact same effect.
13
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Replies

Subject Author
Re: [gentoo-amd64] About gcc 4.1.1 "Bráulio Oliveira" <brauliobo@×××××.com>
Re: [gentoo-amd64] About gcc 4.1.1 "Boyd Stephen Smith Jr." <bss03@××××××××××.net>