[PATCH] D18592: [PowerPC] Back end improvements to vec_splat

[Nemanja Ivanovic via llvm-commits]

nemanjai updated this revision to Diff 52216.
nemanjai added a comment.

I've changed this around a bit to match an SDAG pattern that will be emitted when lowering vector_shuffle nodes rather than matching an intrinsic. This way, we'll get the FE to emit vector shuffles for splats (in the update to http://reviews.llvm.org/D18593).

Also, since XXSPLTW is a splat, I've added the handling for it to the swap removal pass.


Repository:
  rL LLVM

http://reviews.llvm.org/D18592

Files:
  lib/Target/PowerPC/PPCISelLowering.cpp
  lib/Target/PowerPC/PPCISelLowering.h
  lib/Target/PowerPC/PPCInstrInfo.td
  lib/Target/PowerPC/PPCInstrVSX.td
  lib/Target/PowerPC/PPCVSXSwapRemoval.cpp
  test/CodeGen/PowerPC/swaps-le-2.ll

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