[PATCH] AsmParser: add support for .end directive

[Renato Golin]

  Hi Saleem,

  I couldn't find reference for the .end directive in the GNU assembler, but I do remember that ARM assembler had a compulsory END directive on every ASM file and that was more relevant when including files than anything else.

  Do you have any rationale for introducing this to LLVM? Any specific usage, or use case for that being relevant?

  cheers,
  --renato

http://llvm-reviews.chandlerc.com/D2414