[PATCH] D10964: [Codegen] Add intrinsics 'hadd*' and corresponding SDNodes for horizontal sum operation.

[Shahid]

ashahid updated this revision to Diff 30262.
ashahid added a comment.

Updated the patch with following changes

1. Overloaded the intrinsic properly.
2. Updated the WidenVecOp to avoid summing up of undefs.
3. Restricted the floating point version of intrinsic only for fast-math.
4. Updated the doc accordingly


Repository:
  rL LLVM

http://reviews.llvm.org/D10964

Files:
  docs/LangRef.rst
  include/llvm/CodeGen/ISDOpcodes.h
  include/llvm/IR/Intrinsics.td
  include/llvm/Target/TargetSelectionDAG.td
  lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
  lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  lib/CodeGen/SelectionDAG/LegalizeTypes.h
  lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
  lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
  lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
  lib/CodeGen/TargetLoweringBase.cpp
  test/CodeGen/X86/hadd_expand.ll
  test/CodeGen/X86/hadd_float_expand.ll

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