[PATCH] Add address space arguments to MemoryBuiltins

[Nuno Lopes]

  The patch itself LGTM.
  The test, however, doesn't look right.  Doesn't it pass without the patch?  You need a test case that really shows that the patch is working.  E.g., two objectsize on pointers with different sizes, objectize returning an i32, when the pointer is only 8 bits (and vice-versa), etc. All those tricky edge cases.

http://llvm-reviews.chandlerc.com/D1685