forcing tail/sibling call optimization

[Jeffrey A Law]

  In message < 20001127173909.2975234D80@nile.gnat.com >you write:
  > In order to write a GCC front-end for any language with proper 
  > tail-recursion,  there should be a way in the tree to represent a tail call
Right.  We don't have that ability right now, but I'd support adding it for
those languages which need it.


  > If the GCC backend is not able to compile this on a certain architecture,
  > it abandons the compilation with an error.
Right.
jeff