[Bug other/94060] New: Cleanup code in gimple_or_expr_nonartificial_location

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94060

            Bug ID: 94060
           Summary: Cleanup code in gimple_or_expr_nonartificial_location
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: law at redhat dot com
  Target Milestone: ---

gimple_or_expr_nonartificial_location will extract a location from the passed
in expr node.  That's generally the wrong thing to do.

For gcc-11 that code should either be removed or turned into a gcc_unreachable
so that we can track down occurrences of UNKNOWN_LOCATION slipping through on
gimple statements.