[PATCH] Add AnyReg calling convention support for patchpoint intrinsic.

[Eric Christopher]

  Few comments:

  a) would this be better off by defining away the problem and having the stack map/patch point intrinsics be not-calls? If you don't care where things are the only thing you care about is that certain registers are saved and restored and you might be able to mark them as clobberable instead.

  b) There's no fast-isel support for this? Pretty surprised given JIT.

http://llvm-reviews.chandlerc.com/D2009

BRANCH
  js

ARCANIST PROJECT
  llvm