[Bug tree-optimization/79390] [7 Regression] 10% performance drop in SciMark2 LU after r242550

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79390

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |6.3.1
   Target Milestone|---                         |7.0
            Summary|10% performance drop in     |[7 Regression] 10%
                   |SciMark2 LU after r242550   |performance drop in
                   |                            |SciMark2 LU after r242550

--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
On more recent trunk -fno-split-paths makes only a tiny difference (4882 vs.
4779 Mflops) while -ftree-loop-if-convert still results in 5432 Mflops.  GCC 6
scores 5523 Mflops for me (-O3 -march=native on a Broadwell CPU).

Marking as regression.