[PATCH] D34160: [Power9] Exploit vinserth instruction

[Graham Yiu via Phabricator via llvm-commits]

gyiu created this revision.

This patch adds code to PPC ISEL lowering to recognize half-word inserts from vector_shuffles, and use https://reviews.llvm.org/P9 shift and vector insert instructions instead of vperm.


Repository:
  rL LLVM

https://reviews.llvm.org/D34160

Files:
  lib/Target/PowerPC/PPCISelLowering.cpp
  lib/Target/PowerPC/PPCISelLowering.h
  lib/Target/PowerPC/PPCInstrAltivec.td
  lib/Target/PowerPC/PPCInstrInfo.td
  lib/Target/PowerPC/PPCInstrVSX.td
  test/CodeGen/PowerPC/p9-vinsert-vextract.ll

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