Re:Re: [2.6 patch] add a config option for -Os compilation

[Matt]

> The main effect of -Os compared to -O2 (besides disabling some
> reordering of the code and prefetching) is the disabling of various
> alignments. I doubt that's a win on all CPUs.

Well the big win I found from -Os is the disabling of code inlining.
So I found I got much better code from -finline-limit=100. I
found this value after trial and error (via a bit of bench marking).
Mind you this is what works for my athlon.. Mind you the
difference isnt that huge.. I found turning on -Winline and
-finline-limit handy for finding the culprits of huge inlines..

   matt


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