[PATCH] D34095: [DAG] Prevent CombineTo from deleting already deleted nodes

[Nirav Dave via Phabricator via llvm-commits]

niravd updated this revision to Diff 107119.
niravd added a comment.

Rebase and remove dependent patch in effort to land this soon.


https://reviews.llvm.org/D34095

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/X86/avx512-mask-op.ll
  test/CodeGen/X86/pr32515.ll

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