linux-kernel - Re: Possibility of adding -march=native to x86

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Message-ID: <fc94aae90710251312w2eba46e8h5d4f8715ad0e91b6@mail.gmail.com>
Date:	Thu, 25 Oct 2007 21:12:45 +0100
From:	"Michael Lothian" <mike@...eburn.co.uk>
To:	"Adrian Bunk" <bunk@...nel.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Possibility of adding -march=native to x86

> The MPENTIUM4 option does not only set -march=pentium4, it also enables
> several other options in arch/i386/Kconfig.cpu resulting in better
> performance.

How about an autodetect to set the right options here too using cpuid?

With a warning of course that the code produced will be specifically
for the native cpu that it's compiled on.
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