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Date: Wed, 23 Nov 2011 12:05:44 -0500
Message-ID: <CA+czFiBfHTEdgbsV_VzDLMJBDCF3zKSiW+2bKi0EucNG4irOtg@mail.gmail.com>
Subject: Re: [gentoo-user] Re: Re: Re: Another hardware thread
From: Michael Mol <mikemol@gmail.com>
To: gentoo-user@lists.gentoo.org
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On Wed, Nov 23, 2011 at 11:55 AM, Stefan G. Weichinger <lists@xunil.at> wro=
te:
>
> Ad CFLAGS for i7-2600:
>
> Is that too much ricer-style? =C2=A0-->
>
> ### gcc -march=3Dnative -E -v - </dev/null 2>&1 | sed -n 's/.* -v - //p'
>
> CFLAGS=3D"-O2 -D_FORTIFY_SOURCE=3D2 -march=3Dcore2 -mcx16 -msahf -maes
> -mpclmul -mpopcnt -mavx --param l1-cache-size=3D32 --param
> l1-cache-line-size=3D64 --param l2-cache-size=3D8192 -mtune=3Dgeneric"
>
> gcc-4.5.3-r1 ...
That's equivalent to, what, "-O2 -D_FORTIFY_SOURCE=3D2 -march=3Dnative" ?
I don't see anything to complain about.
Actually, it's pretty interesting seeing what that processor comes
down to for -march=3Dnative. I wish there were a database of processors
and their decomposed compiler tuning flags for comparison. That would
be *very* interesting, from the standpoint of proc shopping and
looking at the evolution of CPUs.
--=20
:wq