-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Jan Hubicka wrote on 05/04/06 08:36:
> If you are interested in some sort of integration of changes in IPA > branch (IE whole program in SSA form), I can probably prepare sort of > merge patches for review (pretty much as I intend to finally do in next > development cycle). > Yeah, that'd be nice. Some of these changes are individually pretty substantial, so I wonder whether it'd be better to have them in separate branches to simplify integration. > It would be nice to have this in mind when designing datastructures so > we won't end up with sollution having limitations of SSA to single > function body (for example in current implementation the variable > annotations are quite an offenders as they are shared across functions > for static variables but contain function local datastructures). > Yes, another thing that I now see that is implicit with the removal of on-the-side data structures is the gradual removal of language hooks, or the inclusion of enough original language information to recover from a stream. > I did some testing of memory consumption for my gccsummit paper and it > looks like (quite suprisingly I would say) current IPA branch is not > noticeably worse in memory consumption than mainline (ie the conversion > to SSA and early optimizations don't expand IL too much). > Nice. Looking forward to this. > I don't however build the aliasing info, just do the SSA before first > alias pass. I am not sure whether we want to build SSA representation > of aliasing for whole program (mem-SSA or not) is good idea. Perhaps > just making aliaisng aware early local pass, then removing the virutal > operands and rebuilding aliasing in late pass is easier way to go, but > with proper design of datastructures I guess it won't be dificult to > experiment with it later. > Is it because of all the virtual operands? Or is the information hard to keep for multiple functions? -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (GNU/Linux) iD8DBQFEWgNjUTa2oAUaiwQRAt3VAJ40n4uTok2563PvLYTSJbrcqF1tCQCePGRA ZtjZOQrRz8AiUPwR5WtsVBw= =f50m -----END PGP SIGNATURE-----
