[PATCH] D62745: Factor out SelectionDAG's switch analysis and lowering into a separate component

[Amara Emerson via Phabricator via llvm-commits]

aemerson created this revision.
aemerson added reviewers: dsanders, paquette, t.p.northover, qcolombet, eli.friedman.
Herald added subscribers: mgrang, hiraditya, mgorny.
Herald added a project: LLVM.

In order for GlobalISel to re-use the significant amount of analysis and optimization code in SDAG's switch lowering, we first have to extract it and create an interface to be used by both frameworks.

No test changes as it's NFC.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D62745

Files:
  llvm/include/llvm/CodeGen/SwitchLoweringUtils.h
  llvm/lib/CodeGen/CMakeLists.txt
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
  llvm/lib/CodeGen/SwitchLoweringUtils.cpp

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