[PATCH] D39596: Allow separation of declarations and definitions in <Target>ISelDAGToDAG.inc

[Krzysztof Parzyszek via Phabricator via llvm-commits]

kparzysz created this revision.
Herald added a subscriber: igorb.

This patch adds the ability to include the member function declarations in the instruction selector class separately from the member bodies.

Defining GET_DAGISEL_DECL macro to any value will only include the member declarations. To include bodies, define GET_DAGISEL_BODY macro to be the selector class name. Example:

  class FooDAGToDAGISel : public SelectionDAGISel {
    // Pull in declarations only.
    #define GET_DAGISEL_DECL
    #include "FooISelDAGToDAG.inc"
  };
  
  // Include the function bodies (with names qualified with the provided
  // class name).
  #define GET_DAGISEL_BODY FooDAGToDAGISel
  #include "FooISelDAGToDAG.inc"

When neither of the two macros are defined, the function bodies are emitted inline (in the same way as before this patch).


Repository:
  rL LLVM

https://reviews.llvm.org/D39596

Files:
  utils/TableGen/DAGISelEmitter.cpp
  utils/TableGen/DAGISelMatcherEmitter.cpp

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