[Bug tree-optimization/64193] [4.8/4.9 Regression] Decreased performance after r173250

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64193
Bug 64193 depends on bug 64312, which changed state.

Bug 64312 Summary: [5 Regression] ICE: Segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64312

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED