[Bug middle-end/51233] [ipa-iterations] running multiple passes of early IPA on zlib produces more optimal code

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51233

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |lto
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-08-10
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-08-10 09:52:37 UTC ---
We've discussed the possibility of iterating the LTO WPA phase by outputting
LTO bytecode from the LTRANS phase (at some point before expansion, likely
even before loop optimizations).  That would be the way to go here I think,
apart from the idea that popped up how to do better for early optimization
of cycles in the cgraph.