[PATCH] D151029: [DAG] Combine insert(shuffle(load), load, 0) into a single load

[Dave Green via Phabricator via llvm-commits]

dmgreen updated this revision to Diff 524784.
dmgreen added a comment.

Handle undef lanes and add a couple of extra tests for them.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D151029/new/

https://reviews.llvm.org/D151029

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
  llvm/test/CodeGen/AArch64/insertshuffleload.ll
  llvm/test/CodeGen/Thumb2/mve-insertshuffleload.ll

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