Date: Sat, 8 Apr 2000 15:53:38 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Kenneth Wayne Culver <culverk@wam.umd.edu> Cc: Kris Kennaway <kris@FreeBSD.ORG>, "Alexey N. Dokuchaev" <danfe@inet.ssc.nsu.ru>, freebsd-hackers@FreeBSD.ORG Subject: Re: What are the best gcc optimization options for Pentium 200 MMX Message-ID: <200004082253.PAA13069@apollo.backplane.com> References: <Pine.GSO.4.21.0004081804090.10178-100000@rac3.wam.umd.edu>
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:Why exactly whould you not touch the -march options? I have had no
:problems using them, and my system (5.0-CURRENT) seems a little faster
:with -march=i686. I could be wrong though as I havn't done any exact
:tests... it just seems a bit more responsive..
:
:=================================================================
:| Kenneth Culver | FreeBSD: The best OS around. |
A couple of reasons, but the two main ones are:
* They are still under development
* They won't do what you expect (for example, the pentium optimizations
often produce faster code on a PIII then the i686 optimizations)
* They *have* been known to generate bad code, owing to being under
constant development.
* And your binaries won't necessarily be portable between
manufacturers (AMD vs Intel), or performance may suffer.
-Matt
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