Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/ExecutionEngine/Orc/GlobalMappingLayer.h b/linux-x64/clang/include/llvm/ExecutionEngine/Orc/GlobalMappingLayer.h
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+++ b/linux-x64/clang/include/llvm/ExecutionEngine/Orc/GlobalMappingLayer.h
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+//===- GlobalMappingLayer.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.
+//
+//===----------------------------------------------------------------------===//
+//
+// Convenience layer for injecting symbols that will appear in calls to
+// findSymbol.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_EXECUTIONENGINE_ORC_GLOBALMAPPINGLAYER_H
+#define LLVM_EXECUTIONENGINE_ORC_GLOBALMAPPINGLAYER_H
+
+#include "llvm/ExecutionEngine/JITSymbol.h"
+#include <map>
+#include <memory>
+#include <string>
+
+namespace llvm {
+
+class Module;
+class JITSymbolResolver;
+
+namespace orc {
+
+/// @brief Global mapping layer.
+///
+/// This layer overrides the findSymbol method to first search a local symbol
+/// table that the client can define. It can be used to inject new symbol
+/// mappings into the JIT. Beware, however: symbols within a single IR module or
+/// object file will still resolve locally (via RuntimeDyld's symbol table) -
+/// such internal references cannot be overriden via this layer.
+template <typename BaseLayerT>
+class GlobalMappingLayer {
+public:
+
+ /// @brief Handle to an added module.
+ using ModuleHandleT = typename BaseLayerT::ModuleHandleT;
+
+ /// @brief Construct an GlobalMappingLayer with the given BaseLayer
+ GlobalMappingLayer(BaseLayerT &BaseLayer) : BaseLayer(BaseLayer) {}
+
+ /// @brief Add the given module to the JIT.
+ /// @return A handle for the added modules.
+ Expected<ModuleHandleT>
+ addModule(std::shared_ptr<Module> M,
+ std::shared_ptr<JITSymbolResolver> Resolver) {
+ return BaseLayer.addModule(std::move(M), std::move(Resolver));
+ }
+
+ /// @brief Remove the module set associated with the handle H.
+ Error removeModule(ModuleHandleT H) { return BaseLayer.removeModule(H); }
+
+ /// @brief Manually set the address to return for the given symbol.
+ void setGlobalMapping(const std::string &Name, JITTargetAddress Addr) {
+ SymbolTable[Name] = Addr;
+ }
+
+ /// @brief Remove the given symbol from the global mapping.
+ void eraseGlobalMapping(const std::string &Name) {
+ SymbolTable.erase(Name);
+ }
+
+ /// @brief Search for the given named symbol.
+ ///
+ /// This method will first search the local symbol table, returning
+ /// any symbol found there. If the symbol is not found in the local
+ /// table then this call will be passed through to the base layer.
+ ///
+ /// @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) {
+ auto I = SymbolTable.find(Name);
+ if (I != SymbolTable.end())
+ return JITSymbol(I->second, JITSymbolFlags::Exported);
+ return BaseLayer.findSymbol(Name, ExportedSymbolsOnly);
+ }
+
+ /// @brief Get the address of the given symbol in the context of the of the
+ /// 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 set represented by the
+ /// given handle.
+ /// @param H Handle for module set to emit/finalize.
+ Error emitAndFinalize(ModuleHandleT H) {
+ return BaseLayer.emitAndFinalize(H);
+ }
+
+private:
+ BaseLayerT &BaseLayer;
+ std::map<std::string, JITTargetAddress> SymbolTable;
+};
+
+} // end namespace orc
+} // end namespace llvm
+
+#endif // LLVM_EXECUTIONENGINE_ORC_GLOBALMAPPINGLAYER_H