[PATCH] Support for generating DWARF .debug_aranges sections.

[Eric Christopher]

  Easiest way to do that is to take two compile units and merge them together using llvm-link and then generate code for that. I'd suggest making them not share any types at the moment other than basic types, that work isn't quite done.

  For example:

  a.c:

  int add(int a, int b) { return a+b; }

  b.c:
  extern int add(int a, int b);
  int foo(int a, int b) { return add(a, b); }

  compile them both to bitcode, link them together, and generate code. You could also take a look at the stmt-list-multiple-compile-units.ll testcase to get an idea of what it'll look like.

  If you need any help send me email, I'm very interested in seeing this get in. I've got a few more comments that I'll make tonight or tomorrow.

http://llvm-reviews.chandlerc.com/D1649