new egcs/gcc frontend

[Jeffrey A Law]

  In message < 35F56BB5.1F1E66CE@usa.net >you write:
  > Does anybody know if there's some handy source of info on the
  > frontend/gcc backend interface? (Probably I've missed some
  > really obvious faq lying around in my egcs install . . .)
  > 
  > Or if there aren't any handy docs, it'd help if someone could 
  > point to the part of the source tree to look at.
There's no real documentation on the front-end interface other than
the source itself.  c-*.c, cp/*.c ch/*.c f/*.c are the c, c++, chill
and fortran front-ends.  You'll probably want to read them a little.

You'll also want to understand tree.h and tree.def and some of the
code in tree.c.

There's more, but that should get you started.
jeff