[PATCH v14 16/40] c, c++: Use 16 bits for all use of enum rid for more keyword space

[Jason Merrill]

On Tue, Sep 19, 2023 at 7:05 PM Ken Matsui <kmatsui@cs.washington.edu>
wrote:

> On Tue, Sep 19, 2023 at 9:59 AM Jason Merrill <jason@redhat.com> wrote:
> >
> > On 9/15/23 19:51, Ken Matsui via Gcc-patches wrote:
> > > Now that RID_MAX has reached 255, we need to update the bit sizes of
> every
> > > use of the enum rid from 8 to 16 to support more keywords.
> >
> > Sorry to bring this up so late, but this does raise the question of
> > whether we actually want to use keyword space for all these traits that
> > will probably be used approximately once in a C++ translation unit.  I
> > wonder if it would make sense to instead use e.g. RID_TRAIT for all of
> > them and use gperf to look up the specific trait from the identifier?
> >
>
> Thank you for your review. To use gperf, we might need to duplicate
> the list of all traits defined in cp-trait.def. Modifying the traits
> would require us to edit two files, but would it be acceptable?
>

I think the gperf input could be generated from the .def with a simple
script?

Jason