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Re: x86_64 == athlon-4?

From: Scott Robert Ladd <coyote at coyotegulch dot com>
To: "Neal D. Becker" <ndbecker2 at verizon dot net>
Cc: gcc at gcc dot gnu dot org
Date: Fri, 23 Apr 2004 12:15:36 -0400
Subject: Re: x86_64 == athlon-4?
References: <c6ban8$7pq$1@sea.gmane.org>

Neal D. Becker wrote:

What setting of -mcpu=CPU-TYPE is best for x86_64?  Is this the same as
"athlon-4"?
(It would be helpful if the gcc info explained these terms)

Up until GCC 3.4, there were no tuning switches for x86_64. With GCC 3.4.0 and later, you can use -march=k8 or -march=opteron (which are, I believe, equivalent) to compile specifically for x86_64.

--
Scott Robert Ladd
Coyote Gulch Productions (http://www.coyotegulch.com)
Software Invention for High-Performance Computing

References:
- x86_64 == athlon-4?
  - From: Neal D. Becker

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