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Re: Compiler opt


On Sat, Aug 28, 2004 at 06:12:03PM -0400, Brett Viren wrote:
> They are orthogonal flags.  On Debian-amd64 -m64 is on by default.
> Using -march=k8 will turn on use of x86-64 instruction set.  
> Don't know if em64t support all of x86-64.

gcc-3.3 changelog[1], version 1:3.3.3ds5-2 released 6 Mar 2004

    - On amd64, don't imply 3DNow! for -m64 by default

pure64 should run on all em64t systems too, but so far only the
installer is known to (lack of machines to test on) - I personally
don't know of any running debian-pure64 installation on a nocona xeon

Frederik Schueler

[1] /usr/share/doc/gcc-3.3/changelog.Debian.gz


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