[Bug tree-optimization/77808] New: [7 Regression] ICE in duplicate_ssa_name_ptr_info, at tree-ssanames.c:630 starting with r240439

[doug.gilmore at imgtec dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77808

            Bug ID: 77808
           Summary: [7 Regression] ICE in duplicate_ssa_name_ptr_info, at
                    tree-ssanames.c:630 starting with r240439
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doug.gilmore at imgtec dot com
  Target Milestone: ---

Reported in:

https://gcc.gnu.org/ml/gcc-patches/2016-09/msg02285.html

This issue was not found during regression testing for
commit r240439 since -fprefetch-loop-arrays needs to
be set by default.

Will send a fix and test case to gcc-patches.