1 files changed, 129 insertions, 0 deletions
diff --git a/clang-r353983/include/llvm/ExecutionEngine/Orc/IRCompileLayer.h b/clang-r353983/include/llvm/ExecutionEngine/Orc/IRCompileLayer.h
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+++ b/clang-r353983/include/llvm/ExecutionEngine/Orc/IRCompileLayer.h
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+//===- IRCompileLayer.h -- Eagerly compile IR for JIT -----------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// 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/ExecutionEngine/Orc/Layer.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include <memory>
+#include <string>
+
+namespace llvm {
+
+class Module;
+
+namespace orc {
+
+class IRCompileLayer : public IRLayer {
+public:
+  using CompileFunction =
+      std::function<Expected<std::unique_ptr<MemoryBuffer>>(Module &)>;
+
+  using NotifyCompiledFunction =
+      std::function<void(VModuleKey K, ThreadSafeModule TSM)>;
+
+  IRCompileLayer(ExecutionSession &ES, ObjectLayer &BaseLayer,
+                 CompileFunction Compile);
+
+  void setNotifyCompiled(NotifyCompiledFunction NotifyCompiled);
+
+  void emit(MaterializationResponsibility R, ThreadSafeModule TSM) override;
+
+private:
+  mutable std::mutex IRLayerMutex;
+  ObjectLayer &BaseLayer;
+  CompileFunction Compile;
+  NotifyCompiledFunction NotifyCompiled = NotifyCompiledFunction();
+};
+
+/// 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 LegacyIRCompileLayer {
+public:
+  /// Callback type for notifications when modules are compiled.
+  using NotifyCompiledCallback =
+      std::function<void(VModuleKey K, std::unique_ptr<Module>)>;
+
+  /// Construct an LegacyIRCompileLayer with the given BaseLayer, which must
+  ///        implement the ObjectLayer concept.
+  LegacyIRCompileLayer(
+      BaseLayerT &BaseLayer, CompileFtor Compile,
+      NotifyCompiledCallback NotifyCompiled = NotifyCompiledCallback())
+      : BaseLayer(BaseLayer), Compile(std::move(Compile)),
+        NotifyCompiled(std::move(NotifyCompiled)) {}
+
+  /// Get a reference to the compiler functor.
+  CompileFtor& getCompiler() { return Compile; }
+
+  /// (Re)set the NotifyCompiled callback.
+  void setNotifyCompiled(NotifyCompiledCallback NotifyCompiled) {
+    this->NotifyCompiled = std::move(NotifyCompiled);
+  }
+
+  /// Compile the module, and add the resulting object to the base layer
+  ///        along with the given memory manager and symbol resolver.
+  Error addModule(VModuleKey K, std::unique_ptr<Module> M) {
+    if (auto Err = BaseLayer.addObject(std::move(K), Compile(*M)))
+      return Err;
+    if (NotifyCompiled)
+      NotifyCompiled(std::move(K), std::move(M));
+    return Error::success();
+  }
+
+  /// Remove the module associated with the VModuleKey K.
+  Error removeModule(VModuleKey K) { return BaseLayer.removeObject(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 compiled module represented
+  ///        by the handle H. 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
+  ///        handle.
+  /// @param K The VModuleKey for the module to emit/finalize.
+  Error emitAndFinalize(VModuleKey K) { return BaseLayer.emitAndFinalize(K); }
+
+private:
+  BaseLayerT &BaseLayer;
+  CompileFtor Compile;
+  NotifyCompiledCallback NotifyCompiled;
+};
+
+} // end namespace orc
+
+} // end namespace llvm
+
+#endif // LLVM_EXECUTIONENGINE_ORC_IRCOMPILINGLAYER_H