gcc-4.5-RH in F14
Chen Lei
supercyper1 at gmail.com
Thu Jul 8 16:05:43 UTC 2010
2010/7/8 Jakub Jelinek <jakub at redhat.com>:
> Generally, much better speedup can be achieved by using PGO
> (-fprofile-generate, run on some testsuite, -fprofile-use).
> GCC itself is built that way for several years, but it would be useful if
> other performance sensitive packages were built that way too, assuming they
> have some testsuite which resembles common use.
>
> E.g. bash can be easily trained on some configure or some other
> large shell scripts, similarly for python, perl, ...
> The speedups from this can go up to say 30% or so.
>
> Jakub
> --
It seems MeeGo builds core packages by using PGO already. Is there
anyone who would like to volunteer to write a packaging guideline
about using PGO?
Regards,
Chen Lei
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