[PATCH] Add Integer Saturation Intrinsics.

[Renato Golin]

Hi Ahmed,

This looks clean enough for me, and it matches the ARM semantics. I believe front-ends could generate it directly, but also it could become the end-result of an optimization pass looking for that pattern in IR, right?

cheers,
--renato


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http://reviews.llvm.org/D6976

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