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//===- IRTransformLayer.h - Run all IR through a functor --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Run all IR passed in through a user supplied functor.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_EXECUTIONENGINE_ORC_IRTRANSFORMLAYER_H
#define LLVM_EXECUTIONENGINE_ORC_IRTRANSFORMLAYER_H
#include "llvm/ExecutionEngine/JITSymbol.h"
#include "llvm/ExecutionEngine/Orc/Layer.h"
#include <memory>
#include <string>
namespace llvm {
class Module;
namespace orc {
class IRTransformLayer2 : public IRLayer {
public:
using TransformFunction =
std::function<Expected<std::unique_ptr<Module>>(std::unique_ptr<Module>)>;
IRTransformLayer2(ExecutionSession &ES, IRLayer &BaseLayer,
TransformFunction Transform = identityTransform);
void setTransform(TransformFunction Transform) {
this->Transform = std::move(Transform);
}
void emit(MaterializationResponsibility R, VModuleKey K,
std::unique_ptr<Module> M) override;
static std::unique_ptr<Module> identityTransform(std::unique_ptr<Module> M) {
return M;
}
private:
IRLayer &BaseLayer;
TransformFunction Transform;
};
/// IR mutating layer.
///
/// This layer applies a user supplied transform to each module that is added,
/// then adds the transformed module to the layer below.
template <typename BaseLayerT, typename TransformFtor>
class IRTransformLayer {
public:
/// Construct an IRTransformLayer with the given BaseLayer
IRTransformLayer(BaseLayerT &BaseLayer,
TransformFtor Transform = TransformFtor())
: BaseLayer(BaseLayer), Transform(std::move(Transform)) {}
/// Apply the transform functor to the module, then add the module to
/// the layer below, along with the memory manager and symbol resolver.
///
/// @return A handle for the added modules.
Error addModule(VModuleKey K, std::unique_ptr<Module> M) {
return BaseLayer.addModule(std::move(K), Transform(std::move(M)));
}
/// Remove the module associated with the VModuleKey K.
Error removeModule(VModuleKey K) { return BaseLayer.removeModule(K); }
/// Search for the given named symbol.
/// @param Name The name of the symbol to search for.
/// @param ExportedSymbolsOnly If true, search only for exported symbols.
/// @return A handle for the given named symbol, if it exists.
JITSymbol findSymbol(const std::string &Name, bool ExportedSymbolsOnly) {
return BaseLayer.findSymbol(Name, ExportedSymbolsOnly);
}
/// Get the address of the given symbol in the context of the module
/// represented by the VModuleKey K. This call is forwarded to the base
/// layer's implementation.
/// @param K The VModuleKey for the module to search in.
/// @param Name The name of the symbol to search for.
/// @param ExportedSymbolsOnly If true, search only for exported symbols.
/// @return A handle for the given named symbol, if it is found in the
/// given module.
JITSymbol findSymbolIn(VModuleKey K, const std::string &Name,
bool ExportedSymbolsOnly) {
return BaseLayer.findSymbolIn(K, Name, ExportedSymbolsOnly);
}
/// Immediately emit and finalize the module represented by the given
/// VModuleKey.
/// @param K The VModuleKey for the module to emit/finalize.
Error emitAndFinalize(VModuleKey K) { return BaseLayer.emitAndFinalize(K); }
/// Access the transform functor directly.
TransformFtor& getTransform() { return Transform; }
/// Access the mumate functor directly.
const TransformFtor& getTransform() const { return Transform; }
private:
BaseLayerT &BaseLayer;
TransformFtor Transform;
};
} // end namespace orc
} // end namespace llvm
#endif // LLVM_EXECUTIONENGINE_ORC_IRTRANSFORMLAYER_H
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