Nathan Slingerland 21314fb768 [Support] Add saturating multiply-add support function
Summary: Add SaturatingMultiplyAdd convenience function template since A + (X * Y) comes up frequently when doing weighted arithmetic.

Reviewers: davidxl, silvas

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D15385

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257532 91177308-0d34-0410-b5e6-96231b3b80d8
2016-01-12 22:34:00 +00:00
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