How to detect whether we're inside of a loop??
Jan Hubicka
jh@suse.cz
Wed Apr 9 19:19:00 GMT 2003
> Daniel Berlin wrote:
> > On Wednesday, April 9, 2003, at 02:25 PM, Geoff Keating wrote:
> > > Why don't you just use the support that GCC already has for
> > > detecting the probability that a block will be executed?
> >
> > Because it's at the tree level he's talking about, not the RTL
> > level.
>
> FWIW, once tree-ssa-vrp is implemented, you get branch
> prediction with it for free. Would that help?
Definitly :)
We already do have branch prediction algorithm at RTL level. I would
like to port it to tree-ssa as soon as we realize how to maintain the
profile over RTL expansion....
Honza
>
> Greetz
> Steven
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