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Re: [rtl-optimization] Improve Data Prefetch for IA-64
ÒýÑÔ Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz>:
> Hello,
>
> > On Sunday 27 March 2005 03:53, Canqun Yang wrote:
> > > The last ChangeLog of rtlopt-branch was written
in
> > > 2003. After more than one year, many impovements
in
> > > this branch haven't been put into the GCC HEAD.
Why?
> >
> > Almost all of the rtlopt branch was merged.
Prefetching is one
> > of the few things that was not, probably Zdenek
knows why.
>
> because I never made it work as well as the current
version,
> basically. At least no matter how much I tried, I
never produced
> any benchmark numbers that would justify the
change. Then I went
> to tree-ssa (and tried to write prefetching there,
and got stuck on
> the same issue, after which I simply forgot due to
loads of other work
> :-( ).
>
> Zdenek
>
It shoud be the similar reason as comments in my
previously supplied patch.
http://gcc.gnu.org/ml/gcc-patches/2005-03/msg02400.html
.
Canqun Yang
Creative Compiler Research Group.
National University of Defense Technology, China.