[PATCH] D123347: [ISD::IndexType] Helper functions for common queries.

[Paul Walker via Phabricator via llvm-commits]

paulwalker-arm created this revision.
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Add helper functions to query the signed and scaled properties
of ISD::IndexType along with functions to change them.

Remove setIndexType from MaskedGatherSDNode because it only has
one usage and typically should only be changed alongside its
index operand.

Minimise the direct use of the enum values to lay the groundwork
for more refactoring.

Depends On D123326 <https://reviews.llvm.org/D123326>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D123347

Files:
  llvm/include/llvm/CodeGen/ISDOpcodes.h
  llvm/include/llvm/CodeGen/SelectionDAGNodes.h
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

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