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  1. //===- GlobalSplit.h - global variable splitter -----------------*- 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. // This pass uses inrange annotations on GEP indices to split globals where
  10. // beneficial. Clang currently attaches these annotations to references to
  11. // virtual table globals under the Itanium ABI for the benefit of the
  12. // whole-program virtual call optimization and control flow integrity passes.
  13. //
  14. //===----------------------------------------------------------------------===//
  15.  
  16. #ifndef LLVM_TRANSFORMS_IPO_GLOBALSPLIT_H
  17. #define LLVM_TRANSFORMS_IPO_GLOBALSPLIT_H
  18.  
  19. #include "llvm/IR/PassManager.h"
  20.  
  21. namespace llvm {
  22.  
  23. class Module;
  24.  
  25. /// Pass to perform split of global variables.
  26. class GlobalSplitPass : public PassInfoMixin<GlobalSplitPass> {
  27. public:
  28.   PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
  29. };
  30.  
  31. } // end namespace llvm
  32.  
  33. #endif // LLVM_TRANSFORMS_IPO_GLOBALSPLIT_H
  34.