[PATCH] Emit DWARF info for all code section in an assembly file

[Keith Walker]

  I think that only allowing a single -gdwarf-N option to llvm-mc seems sensible to me, until a specific requirement to support mulitple instances is raised (and the work to support it can then be implemented when there is a specific requirement).

  The code to support describing mulitple code sections in DWARF looks OK to me.

http://llvm-reviews.chandlerc.com/D2697