[PATCH] D57520: [DAG] Aggressively cleanup dangling node in CombineZExtLogicopShiftLoad.

[Nirav Dave via Phabricator via llvm-commits]

niravd created this revision.
niravd added reviewers: Carrot, spatel, craig.topper, RKSimon, efriedma.
Herald added a subscriber: hiraditya.

While dangling nodes will eventually be pruned when they are
considered, leaving them disables combines requiring single-use.


Repository:
  rL LLVM

https://reviews.llvm.org/D57520

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/Hexagon/swp-epilog-phi5.ll
  llvm/test/CodeGen/X86/copy-eflags.ll
  llvm/test/CodeGen/X86/peephole-na-phys-copy-folding.ll
  llvm/test/CodeGen/X86/rd-mod-wr-eflags.ll
  llvm/test/CodeGen/X86/reverse_branches.ll

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