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Date: Mon, 04 Apr 2005 12:53:26 +0400
From: "Andrew P." <infofarmer@mail.ru>
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To: Dick Hoogendijk <dick@nagual.st>
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Subject: Re: AMD64 optimization on FreeBSD 5.4 i386
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Dick Hoogendijk wrote:
> On 04 Apr Bachelier Vincent wrote:
> 
>>Does I compile with march=k8 under cflags ?
>>for example: CFLAGS=-O2 -march=k8 -pipe
>>	     CXXFLAGS=$CFLAGS
>>
>>Well, what do you think ?
>>could I optimize more than CPUTYPE=k8 ?
> 
> 
> Don't have an answer to /your/ question, but mine is related (I think).
> Is it still advisable to have "-O -pipe" in /etc/make.conf?
> I have a duron 800. Does the "-O2" flag give more errors or is it better
> than using the -O? 


To quote the Handbook:
``The optimization -O2 is much slower, and
the optimization difference between -O and
-O2 is normally negligible.''

The only reason one would want to use -O2
would be perfectionism, I think :)

Best wishes,
Andrew P.