On Sat, 2005-04-09 at 23:27 -0400, Diego Novillo wrote: > Sigh. Another SSA_NAME flowing through EH edges getting in the > way. > > I'm starting to think that it would be much better to make these > SSA_NAME_OCCURS_IN_ABNORMAL_PHI into virtuals. We would avoid > all the monkeying around that optimizers have to do. It would > involve a bit of trickery because we only detect them when they > first go into SSA form, but it's doable. Comments from EH folks? I think that would have a rather bad effect on C++ and Java code.
One of the nice things about the current approach is that it is very fine grained -- ie, the flag bit appears on SSA_NAMEs and thus has a relatively limited affect on optimization. Your approach would in effect penalize all other instances of a _DECL just because one instance happened to flow through an EH edge. Jeff
