[PATCH] D50374: [SelectionDAG] When splitting scatter nodes during DAGCombine, create a serial chain dependency.

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: RKSimon, delena, spatel, zvi.

Scatter could have multiple identical indices. We need to maintain sequential order. We get this right in LegalizeVectorTypes, but not in this code.


Repository:
  rL LLVM

https://reviews.llvm.org/D50374

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/X86/masked_gather_scatter.ll

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