[PATCH] D41440: [X86][SSE] Split large PAVGB/PAVGW vectors to legal widths

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: congh, craig.topper, spatel, andreadb.

Patch to allow detectAVGPattern handle vectors larger than the legal size (128 SSE2, 256 AVX2, 512 AVX512BW), splitting the vectors accordingly.


Repository:
  rL LLVM

https://reviews.llvm.org/D41440

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/avg-mask.ll
  test/CodeGen/X86/avg.ll

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