[Bug tree-optimization/79224] [7 Regression] Large C-Ray slowdown

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79224

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-01-25
                 CC|                            |marxin at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
On my Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz, I see:

gcc c-ray-f.c -O3 -ffast-math -funroll-loops -march=core-avx2 -lm && cat scene
| time ./a.out -s 3000x2000:

r244442: 2434 milliseconds
r244441: 2310 milliseconds