Re: gcc optimizer in -current system ...

[Dan Nelson]

In the last episode (Sep 23), [EMAIL PROTECTED] said:
> On Thu, 23 Sep 1999, The Hermit Hacker wrote:
> > just curious, but what is the max setting that can be used to
> > compile the kernel?
> 
> Works rather nicely here with
> 
> -O6 -mpentiumpro -march=pentiumpro -pipe -s -fexpensive-optimizations
> -ffast-math

-O6 is too much; -O3 is the highest level tested for by egcs.

-fexpensive-optimizations is redundant because -O2 turns it on.

See /usr/src/contrib/egcs/gcc/toplev.c, starting at line ~4250, to see
what the different -O levels actually do.

-- 
        Dan Nelson
        [EMAIL PROTECTED]


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