[PATCH] Add Integer Saturation Intrinsics.

[Renato Golin]

FYI, http://reviews.llvm.org/D8371 would greatly benefit from this patch. I'm adding Eric me and Weiming to the review list, the interested parties in the change going in. Please, add whomever else would be good to have in the reviewers list.

cheers,
--renato


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D6976

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