On Sat, Aug 10, 2013 at 02:25:21AM +0200, Andi Kleen wrote:
> On Sat, Aug 10, 2013 at 01:15:11AM +0200, Jan Hubicka wrote:
> > > Jan Hubicka <hubi...@ucw.cz> writes:
> > >
> > > > Hi,
> > > > this patch adds support for speculative calls into callgraph. The idea
> > > > is that
> > > > any IPA optimization that believes it knows likely target of an
> > > > indirect call
> > > > (currently I use it for cross-module indirect call profiling, but I
> > > > expect
> > > > Martin J. can easily add support for ipa-cp and I hope to add
> > > > speculative
> > > > devirtualization in foreseeable future since it should make difference
> > > > for
> > > > Firefox). Speculative call replaces indirect call
> > >
> > > Patch appears to break boot strap on x86_64-linux
> > > (or maybe your other one)
> >
> > How do you bootstrap? This should not be used w/o lto+profiledbootstrap and
> > that seems to work for me...
>
> Neither LTO nor profiled
My tree bootstraps again when I revert
* cgraphbuild.c (cgraph_rebuild_references): Rebuild only
* non-speculative
refs.
* cgraph.c (cgraph_update_edge_in_call_site_hash): New
* function.
svn+ssh://gcc.gnu.org/svn/gcc/trunk@201632
(and also the later patch)
-Andi
