[tree-ssa] Building GENERIC trees cont.

[Kevin Handy]

Paul Brook wrote:

Yes. Many target macros, and the garbage collection system is generated at 
build time.
By far the best solution is to teach the gcc build system about your frontend, 
and let that take care of everything. You should then be able to configure 
gcc with --enable-languages=bcpl.

This is [sort of] documented in "Anatomy of a Language Front End" in 
sourcebuild.texi. Of course the easiest solution is to cut/paste from the 
files in fortran/ or cp/

When I was doing the fortran frontend I created an empty frontend that was 
hardcoded to compile "void foo{return 0;}". Once this worked I started 
plugging in the actual frontend implementation. I'm afraid I never kept this 
skeleton frontend (actually there were several:).  It would have bitrotted 
beyond usefulness anyway.
 

Wouldn't it be useful to have some code available for compiler authors 
to start
with when building their own front end? Having a fairly complete framework
to start with would make starting a new front end a much lower-cost 
(time) project
than it is currently.