[PATCH] D72575: [x86] try harder to form 256-bit unpck*

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 237733.
spatel marked 3 inline comments as done.
spatel added a comment.

Patch updated:

1. Added code comments to better explain the strategy.
2. Moved calls lower and within predicate blocks (expect V2 to be undef) where this makes sense to try.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D72575/new/

https://reviews.llvm.org/D72575

Files:
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/lib/Target/X86/X86ISelLowering.h
  llvm/test/CodeGen/X86/vector-interleave.ll
  llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll

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