http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44463
--- Comment #11 from Jan Hubicka <hubicka at ucw dot cz> 2011-01-10 13:20:36 UTC --- > Yep. It's a mess. > > I'd really really like to have aliases be handled in a unified > IPA symbol table entry facility before adding even more hacks. > Thus we'd have proper resolution information for them (hopefully) Me too, but not for 4.6. I spent some time thinking about implementation of the symbol table and it is clear it won't be easy project at all. Starting from "simple" problems like that our current target machinery makes it impossible by not understanding ASM names to more involved issues how to represent calls to aliases and thunks nicelly in cgraph without all the problems we have. We will also need to extend toplevel ASM syntax for a way specifying what symbols are defined in them. I plan to branch as soon as I will have some rest from fixing all the current LTO issues. Anyway my plan for this PR is to move streaming of alias pairs into lto-cgraph (it is de-facto part of cgraph anyway) so they are read early enough. Then after decl merging but before fixup we can take care to remove the non-prevailing weak aliases from the pair list. I will do that once the other alias change settle unless someone stops me. Honza
