http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50904
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC|ebotcazou at gcc dot |
|gnu.org |
Component|tree-optimization |rtl-optimization
AssignedTo|unassigned at gcc dot |ebotcazou at gcc dot
|gnu.org |gnu.org
--- Comment #19 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-12-01
19:53:15 UTC ---
> lim3 was added as a "hack", now yes, cunroll needs ccp after it (but it's
> there in the form of DOM and VRP). It's a pass ordering issue that we
> cannot ever solve.
OK, but that doesn't explain why LIM isn't able to hoist the loads...
> Please - it seems like a missed optimization there, too.
More of an acknowledged limitation I'd say. And RTL passes aren't supposed to
be enhanced to plug holes in the Tree passes, but let's try anyway.
