On Fri, 2006-07-14 at 11:48 +0200, dragoran wrote:
Arjan van de Ven wrote:
> On Fri, 2006-07-14 at 09:03 +0000, Kevin Kofler wrote:
>
>> Arjan van de Ven <arjan <at> fenrus.demon.nl> writes:
>>
>>> SSE in 32 bit is not "just used" by gcc
>>>
>> What about -ftree-vectorize?
>>
>
> that is, on 32 bit, not so cheap since it means transfering FP from the
> x87 fpu to sse and back a lot.
>
>
ok but why isn't it enabled on x86_64 (for 64bit apps)
the packages are compiled with
-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic
(this is shown in about:buildconfig in 64bit mozilla)
perhaps because it's default enabled in -O2 ?
(also iirc mozilla doesn't use the same CFLAGs as the rest of the distro
does; but that could have gotten fixed recently of course)