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a81793582b
This patch updates the ORC layers and utilities to return and propagate llvm::Errors where appropriate. This is necessary to allow ORC to safely handle error cases in cross-process and remote JITing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307350 91177308-0d34-0410-b5e6-96231b3b80d8
104 lines
3.6 KiB
C++
104 lines
3.6 KiB
C++
//===- IRCompileLayer.h -- Eagerly compile IR for JIT -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Contains the definition for a basic, eagerly compiling layer of the JIT.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_EXECUTIONENGINE_ORC_IRCOMPILELAYER_H
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#define LLVM_EXECUTIONENGINE_ORC_IRCOMPILELAYER_H
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ExecutionEngine/JITSymbol.h"
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#include "llvm/Support/Error.h"
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#include <memory>
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#include <string>
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namespace llvm {
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class Module;
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namespace orc {
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/// @brief Eager IR compiling layer.
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///
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/// This layer immediately compiles each IR module added via addModule to an
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/// object file and adds this module file to the layer below, which must
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/// implement the object layer concept.
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template <typename BaseLayerT, typename CompileFtor>
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class IRCompileLayer {
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public:
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/// @brief Handle to a compiled module.
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using ModuleHandleT = typename BaseLayerT::ObjHandleT;
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/// @brief Construct an IRCompileLayer with the given BaseLayer, which must
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/// implement the ObjectLayer concept.
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IRCompileLayer(BaseLayerT &BaseLayer, CompileFtor Compile)
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: BaseLayer(BaseLayer), Compile(std::move(Compile)) {}
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/// @brief Get a reference to the compiler functor.
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CompileFtor& getCompiler() { return Compile; }
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/// @brief Compile the module, and add the resulting object to the base layer
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/// along with the given memory manager and symbol resolver.
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///
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/// @return A handle for the added module.
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Expected<ModuleHandleT>
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addModule(std::shared_ptr<Module> M,
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std::shared_ptr<JITSymbolResolver> Resolver) {
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using CompileResult = decltype(Compile(*M));
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auto Obj = std::make_shared<CompileResult>(Compile(*M));
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return BaseLayer.addObject(std::move(Obj), std::move(Resolver));
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}
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/// @brief Remove the module associated with the handle H.
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Error removeModule(ModuleHandleT H) {
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return BaseLayer.removeObject(H);
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}
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/// @brief Search for the given named symbol.
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/// @param Name The name of the symbol to search for.
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/// @param ExportedSymbolsOnly If true, search only for exported symbols.
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/// @return A handle for the given named symbol, if it exists.
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JITSymbol findSymbol(const std::string &Name, bool ExportedSymbolsOnly) {
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return BaseLayer.findSymbol(Name, ExportedSymbolsOnly);
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}
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/// @brief Get the address of the given symbol in compiled module represented
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/// by the handle H. This call is forwarded to the base layer's
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/// implementation.
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/// @param H The handle for the module to search in.
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/// @param Name The name of the symbol to search for.
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/// @param ExportedSymbolsOnly If true, search only for exported symbols.
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/// @return A handle for the given named symbol, if it is found in the
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/// given module.
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JITSymbol findSymbolIn(ModuleHandleT H, const std::string &Name,
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bool ExportedSymbolsOnly) {
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return BaseLayer.findSymbolIn(H, Name, ExportedSymbolsOnly);
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}
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/// @brief Immediately emit and finalize the module represented by the given
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/// handle.
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/// @param H Handle for module to emit/finalize.
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Error emitAndFinalize(ModuleHandleT H) {
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return BaseLayer.emitAndFinalize(H);
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}
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private:
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BaseLayerT &BaseLayer;
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CompileFtor Compile;
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};
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} // end namespace orc
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} // end namespace llvm
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#endif // LLVM_EXECUTIONENGINE_ORC_IRCOMPILINGLAYER_H
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