interesting metric

[Steve Kargl]

On Sat, Aug 05, 2006 at 12:04:09AM -0400, Jack Howarth wrote:
>     Interesting, XL Fortran at -O3 produces exactly the same time as
> gfortran at -O3 (121.8 seconds). At -O4, XL Fortrans is slightly 
> faster (114.8 seconds), but only at -O5 does it break away (52.7 seconds).
> The difference between -O4 and -O5 in XL Fortran is "-qipa=level=2"
> which is...
> 
>                        Full interprocedural data flow and  alias
>                         analysis.
> 
> Doesn't profiled IPA exist in gcc? I tried the following...
> 

There is an ipa branch where changes are merged
back into trunk.  I don't know what the status is
with respect to performance. 

-- 
Steve