Date: Sat, 7 Jun 1997 08:57:53 +1000 From: Bruce Evans <bde@zeta.org.au> To: bde@zeta.org.au, token@wicx50.informatik.uni-wuerzburg.de Cc: freebsd-hackers@freebsd.org Subject: Re: gcc -m486, gcc -O2 Message-ID: <199706062257.IAA18824@godzilla.zeta.org.au>
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>> -O2 is sometimes a pessimization. `-O2 -m486' was suggested in 1994. >> It is wronger now. > >Yes, but in 1994 the kernel was compiled with gcc 2.6.3 or older. >Now fbsd uses 2.7.2.1 - is the situation still the same with the >newer compiler? Yes, 2.7.2.1 generates essentially the same i386 code as 2.6.3. Bruce
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