[Bug middle-end/117871] New: cfg_hooks variables should be const at least and maybe a virtual functions

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117871

            Bug ID: 117871
           Summary: cfg_hooks variables should be const at least and maybe
                    a virtual functions
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Keywords: internal-improvement
          Severity: enhancement
          Priority: P3
         Component: middle-end
          Assignee: pinskia at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

cfg_hooks hooks themselves don't change, just which hooks are active changes.
So the hooks should become a class with virtual functions. At bare min, the
hook variables should become const since they don't change at runtime.

Mine for GCC 16.