[PATCH] D158405: [ORC] Introduce IRPartitionLayer for common partition functionality.

[Sunho Kim via Phabricator via llvm-commits]

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The IR module partitioning logic has been embeded in CompileOnDemandLayer but this functionality is also required for other purpose such as re-optimization.
This patch splits that IR partitioning logic out of CompileOnDemandLayer into a new IR layer IRPartitionLayer.

A motivation behind making it into new IR layer is for the possibility of "lazy re-optimizing JIT" where we'd like to have a composition like "IRPartitionLayer -> CompileOnDemandLayer -> ReOptLayer"


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D158405

Files:
  llvm/examples/Kaleidoscope/BuildingAJIT/Chapter3/KaleidoscopeJIT.h
  llvm/examples/SpeculativeJIT/SpeculativeJIT.cpp
  llvm/include/llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h
  llvm/include/llvm/ExecutionEngine/Orc/IRPartitionLayer.h
  llvm/include/llvm/ExecutionEngine/Orc/LLJIT.h
  llvm/lib/ExecutionEngine/Orc/CMakeLists.txt
  llvm/lib/ExecutionEngine/Orc/CompileOnDemandLayer.cpp
  llvm/lib/ExecutionEngine/Orc/IRPartitionLayer.cpp
  llvm/tools/lli/lli.cpp

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