> > Hi, > > > > PR 63814 is caused by cgraph_edge_brings_value_p misidentifying an > > edge to an expanded artificial thunk as an edge to the original node, > > which then leads to crazy double-cloning and doubling the thunks along > > the call. > > > > This patch fixes the bug by strengthening the predicate so that it > > knows where the value is supposed to go and can check that it goes > > there and not anywhere else. It also adds an extra availability check > > that was probably missing in it. > > > > Bootstrapped and tested on x86_64-linux, and i686-linux. OK for > > trunk? > > > > Thanks, > > > > Martin > > > > > > 2014-11-20 Martin Jambor <mjam...@suse.cz> > > > > PR ipa/63814 > > * ipa-cp.c (same_node_or_its_all_contexts_clone_p): New function. > > (cgraph_edge_brings_value_p): New parameter dest, use > > same_node_or_its_all_contexts_clone_p and check availability. > > (cgraph_edge_brings_value_p): Likewise. > > (get_info_about_necessary_edges): New parameter dest, pass it to > > cgraph_edge_brings_value_p. Update caller. > > (gather_edges_for_value): Likewise. > > (perhaps_add_new_callers): Use cgraph_edge_brings_value_p to check > > both the destination and availability.
OK
