[Bug tree-optimization/54776] [4.8 Regression] tramp3d-v4: 20% performance regression using -O3

[hubicka at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54776

Jan Hubicka <hubicka at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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             Status|ASSIGNED                    |NEW
         AssignedTo|hubicka at gcc dot gnu.org  |unassigned at gcc dot
                   |                            |gnu.org

--- Comment #3 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-10-04 15:49:32 UTC ---
Hehe, i am still testing with tramp3d.  The issue with predicate patch was that
I fixed some off-by-one accounting issues in the conditions that needs me to
push up early-inlining-insns and I decided to leave this for later re-tunning
of the parameters.

I will take a look how LTO can help us.  I believe part of the problem should
be fixed by dropping the COMDAT hack for V1 API that is on my TODO list for
this week.

Honza