Re: Why not 03 ?
>>>>> "SL" == Steve Langasek <vorlon@debian.org> writes:
SL> The current default of -O2 is based on the fact that adding -O3 may give
SL> worse results than -O2.
On x86_64 I've yet to find anything which is slow enough to notice where
moving to O3 helped.
The memory pressure from the larger code segments overwhelms any benefit
from reduced prediction pressure.
They may exist. But I didn't find any.
I only tested (or could test) on my K10.
-JimC
--
James Cloos <cloos@jhcloos.com> OpenPGP: 0x997A9F17ED7DAEA6
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