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echo: c_plusplus
to: CAREY BLOODWORTH
from: PIERRE PHANEUF
date: 1997-04-07 06:40:00
subject: DJGPP optimizations

 CB> GCC is not the best at optimization.  Plus, it only generates 486
 CB> code, not 586+ code.  Plus, the 486 code tweaking it does is for a
 CB> _generic_ 486.  What that means is that it aims roughly down the
 CB> middle of the field.  But there are a lot of different 486s, and for
 CB> some of them, the code GCC generates with -m486 can be less than
 CB> optimal.
To be exact, it is not the best at processor specific optimizing, but to tell 
everything, the Photon optimizer for Pentiums (made by Intel) included with 
Borland C++ produces bad code under a few circumstance... ;-) It is more apt 
at generic optimizations, like using a single constant for multiple constant 
symbols and so on...
Pierre
... ebius tagline. This is a moebius tagline. This is a mo ...
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