[PATCH] D23897: [SelectionDAG] Generate vector_shuffle nodes for undersized result vector sizes

[Michael Kuperstein via llvm-commits]

mkuper updated this revision to Diff 69729.
mkuper added a comment.

This version no longer has the AVX2 regressions, but I don't really know if it's the right way to approach it.
Any thoughts?


https://reviews.llvm.org/D23897

Files:
  lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/oddshuffles.ll

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