define_constants and tm.h

[Zack Weinberg]

Bernd Jendrissek <berndj@prism.co.za> writes:

> I'm (very) lazily working on a port to 16-bit x86, and I had been using
> define_constants values throughout my target header (tm.h - really
> i86.h), but since a few months ago I haven't been able to build GCC as
> insn-constants.h isn't yet available by the time tm.h gets included.

I think that people have not been using define_constants values for
things that need to be visible in tm.h this early.

Rather a lot of rtl.c is logic that the generator programs never use;
you could try splitting it up.

zw