Re: gcc 3.5 integration branch proposal

[Jan Hubicka <hubicka at ucw dot cz>]

> > In fact, I finally got around to building gcc-head, and comparing it
> > to gcc 3.3.2.
> > 
> > To say that the results are disappointing would be an understatement:
> > 
> > Time for a kernel compile, gcc 3.3.2:
> >   276.63s real   193.01s user    26.86s system
> > with gcc-head:
> >   341.31s real   213.25s user    27.87s system
> > 
> > Exact same options, basically -O2.
> > 
> > Now, tell me again that GCC is getting faster...
> 
> This is precisely what I intend to do now, yes.
> I re-did your experiment on my notebook (Centrino, 256MB ram) with Linux
> kernel 2.6.1.  I disabled checking and profiledbootstrapped mainline, 
> and compared it to current disabled checking bootstrapped 3.2 branch.
> 
> For 3.4 I get:
> real    6m44.513s
> user    6m13.057s
> sys     0m23.915s
> 
> For 3.2 I get:
> real    7m53.661s
> user    7m19.730s
> sys     0m24.206s
> 

For 3.3 I get:
real    7m50.506s
user    7m6.577s
sys     0m29.863s

So it appears that your problem may be just trivial bug either in GCC or
testing.  If you provide more details, I will look into it.

Honza

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