> If we take this after DCE, we still refer to a statement which no longer > exists which we don't collect in the GC. As i said when i pointed this out to you, we should probably skip walking common.chain on SSA_NAME. But that's non-trivial hard because it's a reused field :(
> > Could someone look into this and see what they can do? You should probably ask Diego or Andrew directly whether they'd like us to do this in bsi_remove (which requires adding an argument) and remove_phi_node(ditto) so that a lot less has to worry about releasing defs. > This will > improve > memory usage in GCC and also there will be more SSA_NAME reuse which is > good. > > Thanks, > Andrew Pinsk > > > >
