Re: [RFC] tree-ssa-ccp.c: Propagate even more ADDR_EXPRs.

[Kazu Hirata <kazu at cs dot umass dot edu>]

Hi Jeff,

> I'd be surprised if we saw a difference as well.  About the only thing
> that's done by forwprop.c that isn't done by CCP is some trivial
> cost analysis -- ie, don't propagate an ADDR_EXPR into a loop nest,
> don't propagate to multiple use sites (which undoes CSE).

Would propagating invariant ADDR_EXPRs (regardless of the number of
their immediate uses) help alias analysis and/or dependence analysis?
(I'm no expert in these areas.)

Kazu Hirata