[PATCH] D53053: [Intrinsic] Signed Saturation Addition Intirnsic

[Leonard Chan via Phabricator via llvm-commits]

leonardchan created this revision.
leonardchan added reviewers: ebevhan, craig.topper, spatel, RKSimon.
Herald added a subscriber: llvm-commits.

Add an intrinsic that takes 2 integers and perform saturation addition on them.

This is a part of implementing fixed point arithmetic in clang where some of the more complex operations will be implemented as intrinsics.


Repository:
  rL LLVM

https://reviews.llvm.org/D53053

Files:
  include/llvm/CodeGen/ISDOpcodes.h
  include/llvm/CodeGen/TargetLowering.h
  include/llvm/IR/Intrinsics.td
  lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
  lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  lib/CodeGen/SelectionDAG/LegalizeTypes.h
  lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
  lib/CodeGen/TargetLoweringBase.cpp
  lib/IR/Verifier.cpp
  test/CodeGen/X86/satsadd.ll

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