[Bug middle-end/116115] New: Move reload_completed and reload_in_progress to be PROP_reload_completed and PROP_reload_in_progress

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116115

            Bug ID: 116115
           Summary: Move reload_completed and reload_in_progress to be
                    PROP_reload_completed and PROP_reload_in_progress
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Keywords: internal-improvement
          Severity: enhancement
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

>From https://gcc.gnu.org/pipermail/gcc-patches/2017-October/485507.html :
```
Likewise reload_completed and reload_in_progress could be transitioned
to IL properties.
```

I noticed this while checking which PROP_* are still in use and even what they
do.