[PATCH] D34630: [Power9] Add additional patterns to recognize and transform insertelt/extractelt to vinsert[h|b]/vextractu[h|b] instructions.

[Graham Yiu via Phabricator via llvm-commits]

gyiu updated this revision to Diff 113263.
gyiu added a comment.

- Removed extract element patterns as changes from 'https://reviews.llvm.org/D34032' generate better code in terms of total cycles.  Also it catches more cases than the vextractu[hb] instructions, as it's only beneficial when operating on dword[1] of the vector register.


Repository:
  rL LLVM

https://reviews.llvm.org/D34630

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

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