[PATCH] [PPC64LE] Remove unnecessary swaps from lane-insensitive vector computations

[Bill Schmidt]

Hal, thanks for the offline discussion.  I've changed the filter class to "LaneSensitive" and cleaned up the SwapFlag foolishness.


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D8565

Files:
  lib/Target/PowerPC/CMakeLists.txt
  lib/Target/PowerPC/PPC.h
  lib/Target/PowerPC/PPC.td
  lib/Target/PowerPC/PPCInstrAltivec.td
  lib/Target/PowerPC/PPCInstrVSX.td
  lib/Target/PowerPC/PPCTargetMachine.cpp
  lib/Target/PowerPC/PPCVSXSwapRemoval.cpp
  test/CodeGen/PowerPC/swaps-le-1.ll
  test/CodeGen/PowerPC/vsx-ldst-builtin-le.ll
  test/CodeGen/PowerPC/vsx-ldst.ll

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