[PATCH] Support for generating DWARF .debug_aranges sections.

[Eric Christopher]

  Instead of, or perhaps in addition to, testing the assembly output can you test using the output of llvm-dwarfdump as well? It makes it much easier to look at the output and verify correctness if something changes. Also some comments in the tests about what aspect you're testing at each spot would be nice.

  LGTM with that change.

  Thanks so much, let me know if you need someone to commit for you.

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