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//===- IRCompileLayer.h -- Eagerly compile IR for JIT -----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Contains the definition for a basic, eagerly compiling layer of the JIT.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_EXECUTIONENGINE_ORC_IRCOMPILELAYER_H
#define LLVM_EXECUTIONENGINE_ORC_IRCOMPILELAYER_H
#include "llvm/ADT/STLExtras.h"
#include "llvm/ExecutionEngine/JITSymbol.h"
#include "llvm/Support/Error.h"
#include <memory>
#include <string>
namespace llvm {
class Module;
namespace orc {
/// @brief Eager IR compiling layer.
///
/// This layer immediately compiles each IR module added via addModule to an
/// object file and adds this module file to the layer below, which must
/// implement the object layer concept.
template <typename BaseLayerT, typename CompileFtor>
class IRCompileLayer {
public:
/// @brief Handle to a compiled module.
using ModuleHandleT = typename BaseLayerT::ObjHandleT;
/// @brief Construct an IRCompileLayer with the given BaseLayer, which must
/// implement the ObjectLayer concept.
IRCompileLayer(BaseLayerT &BaseLayer, CompileFtor Compile)
: BaseLayer(BaseLayer), Compile(std::move(Compile)) {}
/// @brief Get a reference to the compiler functor.
CompileFtor& getCompiler() { return Compile; }
/// @brief Compile the module, and add the resulting object to the base layer
/// along with the given memory manager and symbol resolver.
///
/// @return A handle for the added module.
ModuleHandleT addModule(std::shared_ptr<Module> M,
std::shared_ptr<JITSymbolResolver> Resolver) {
using CompileResult = decltype(Compile(*M));
auto Obj = std::make_shared<CompileResult>(Compile(*M));
return BaseLayer.addObject(std::move(Obj), std::move(Resolver));
}
/// @brief Remove the module associated with the handle H.
void removeModule(ModuleHandleT H) { BaseLayer.removeObject(H); }
/// @brief 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);
}
/// @brief Get the address of the given symbol in compiled module represented
/// by the handle H. This call is forwarded to the base layer's
/// implementation.
/// @param H The handle 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(ModuleHandleT H, const std::string &Name,
bool ExportedSymbolsOnly) {
return BaseLayer.findSymbolIn(H, Name, ExportedSymbolsOnly);
}
/// @brief Immediately emit and finalize the module represented by the given
/// handle.
/// @param H Handle for module to emit/finalize.
void emitAndFinalize(ModuleHandleT H) {
BaseLayer.emitAndFinalize(H);
}
private:
BaseLayerT &BaseLayer;
CompileFtor Compile;
};
} // end namespace orc
} // end namespace llvm
#endif // LLVM_EXECUTIONENGINE_ORC_IRCOMPILINGLAYER_H
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