optimization flags

A D B hackmaster451 at lycos.com
Mon Jan 13 19:19:34 PST 2003


if you got an AMD, do -march=athlon.
---
~PowerPenguin



On Sun, 12 Jan 2003 18:50:40  
 Tushar Teredesai wrote:
>Eric Miller wrote:
>
>>Also, has anyone ever compiled a resource of packages that respond well/don't
>>respond well to optimization?  Something like:
>>
>>Package        CFLAG        Tolerance
>>-------------------------------------
>>foo            march        no good
>>               mcpu         ok
>>bar            march        ok
>>               mcpu         *DO NOT USE*
>>
>-march=i686 works for me in all packages (including glibc, binutils, gcc).
>
>>If someone should endeavor to experiment with this, what are the most used
>>CFLAGS options (besides arch and cpu) to test?
>>  
>>
>-O2
>-march=
>-fomit-frame-pointer
>-fexpensive-optimizations (only for packages that run most of the time 
>like moz). Haven't tested it to see if it does make a difference:)
>
>-- 
>Tushar Teredesai
>   http://www.linuxfromscratch.org/~tushar/
>   http://www.geocities.com/tushar/
>
>
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>Unsubscribe: send email to listar at linuxfromscratch.org
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>
>


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