[Bug tree-optimization/57398] New: [4.9 Regression] WRF and BWAVES miscompares with LTO

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57398

            Bug ID: 57398
           Summary: [4.9 Regression] WRF and BWAVES miscompares with LTO
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org

Last good rev. 197549, first bad rev. 197595.

Flags:

-Ofast -funroll-loops -fpeel-loops -march=native -flto=4 -fuse-linker-plugin
-fno-fat-lto-objects
-Ofast -funroll-loops -fpeel-loops -march=native -flto -fwhole-program
-flto-partition=none

(both miscompare) on a AMD K10 barcelona machine.