[PATCH] Add VSX Scalar loads and stores to the PPC back end

[Nemanja Ivanovic]

Addressed the review comments.

- Removed redundant checks for VSX
- Moved all the P8Vector loads and stores down to the bottom of PPCInstrVSX.td
- Put the check for Direct Moves back in (for clarity and possible future needs)

VSX scalar arithmetic instructions to follow.


REPOSITORY
  rL LLVM

http://reviews.llvm.org/D9440

Files:
  lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
  lib/Target/PowerPC/Disassembler/PPCDisassembler.cpp
  lib/Target/PowerPC/PPCISelDAGToDAG.cpp
  lib/Target/PowerPC/PPCISelLowering.cpp
  lib/Target/PowerPC/PPCInstrInfo.cpp
  lib/Target/PowerPC/PPCInstrVSX.td
  lib/Target/PowerPC/PPCRegisterInfo.cpp
  lib/Target/PowerPC/PPCRegisterInfo.td
  test/CodeGen/PowerPC/ppc64le-smallarg.ll
  test/CodeGen/PowerPC/vsx_scalar_ld_st.ll
  test/MC/Disassembler/PowerPC/vsx.txt
  test/MC/PowerPC/vsx.s

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