[PATCH] Generation of PSAD in LoopVectorizer

[Vijender Reddy]

Hi hfinkel, aschwaighofer, spatel,

This patch corresponds to the discussion we had in the following link about generation of psad in loop vectorizer
http://permalink.gmane.org/gmane.comp.compilers.llvm.devel/81724

Couple of structures were added to make it generic so that other patterns in the future can be easily integrated.

http://reviews.llvm.org/D8136

Files:
  include/llvm/Analysis/TargetTransformInfo.h
  include/llvm/Analysis/TargetTransformInfoImpl.h
  include/llvm/CodeGen/BasicTTIImpl.h
  include/llvm/CodeGen/ISDOpcodes.h
  include/llvm/IR/Intrinsics.td
  lib/Analysis/TargetTransformInfo.cpp
  lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
  lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  lib/Target/X86/X86ISelDAGToDAG.cpp
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86TargetTransformInfo.cpp
  lib/Target/X86/X86TargetTransformInfo.h
  lib/Transforms/Vectorize/LoopVectorize.cpp

EMAIL PREFERENCES
  http://reviews.llvm.org/settings/panel/emailpreferences/
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