[PATCH] D64760: [x86] use more phadd for reductions

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 210121.
spatel added a comment.

Patch updated - no functional changes from the previous draft:

1. Move local variable for NumElts closer to uses.
2. Add TODO comment about handling bigger-than-256-bit types.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D64760/new/

https://reviews.llvm.org/D64760

Files:
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/phaddsub-extract.ll
  llvm/test/CodeGen/X86/vector-reduce-add-widen.ll
  llvm/test/CodeGen/X86/vector-reduce-add.ll

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