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  1. //===------ Mangling.h -- Name Mangling Utilities for ORC -------*- C++ -*-===//
  2. //
  3. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  4. // See https://llvm.org/LICENSE.txt for license information.
  5. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  6. //
  7. //===----------------------------------------------------------------------===//
  8. //
  9. // Name mangling utilities for ORC.
  10. //
  11. //===----------------------------------------------------------------------===//
  12.  
  13. #ifndef LLVM_EXECUTIONENGINE_ORC_MANGLING_H
  14. #define LLVM_EXECUTIONENGINE_ORC_MANGLING_H
  15.  
  16. #include "llvm/ExecutionEngine/Orc/Core.h"
  17. #include "llvm/ExecutionEngine/Orc/ThreadSafeModule.h"
  18. #include "llvm/IR/Module.h"
  19. #include "llvm/Support/MemoryBuffer.h"
  20.  
  21. namespace llvm {
  22. namespace orc {
  23.  
  24. /// Mangles symbol names then uniques them in the context of an
  25. /// ExecutionSession.
  26. class MangleAndInterner {
  27. public:
  28.   MangleAndInterner(ExecutionSession &ES, const DataLayout &DL);
  29.   SymbolStringPtr operator()(StringRef Name);
  30.  
  31. private:
  32.   ExecutionSession &ES;
  33.   const DataLayout &DL;
  34. };
  35.  
  36. /// Maps IR global values to their linker symbol names / flags.
  37. ///
  38. /// This utility can be used when adding new IR globals in the JIT.
  39. class IRSymbolMapper {
  40. public:
  41.   struct ManglingOptions {
  42.     bool EmulatedTLS = false;
  43.   };
  44.  
  45.   using SymbolNameToDefinitionMap = std::map<SymbolStringPtr, GlobalValue *>;
  46.  
  47.   /// Add mangled symbols for the given GlobalValues to SymbolFlags.
  48.   /// If a SymbolToDefinitionMap pointer is supplied then it will be populated
  49.   /// with Name-to-GlobalValue* mappings. Note that this mapping is not
  50.   /// necessarily one-to-one: thread-local GlobalValues, for example, may
  51.   /// produce more than one symbol, in which case the map will contain duplicate
  52.   /// values.
  53.   static void add(ExecutionSession &ES, const ManglingOptions &MO,
  54.                   ArrayRef<GlobalValue *> GVs, SymbolFlagsMap &SymbolFlags,
  55.                   SymbolNameToDefinitionMap *SymbolToDefinition = nullptr);
  56. };
  57.  
  58. } // End namespace orc
  59. } // End namespace llvm
  60.  
  61. #endif // LLVM_EXECUTIONENGINE_ORC_MANGLING_H
  62.