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  1. //===- RegAllocCommon.h - Utilities shared between allocators ---*- 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. #ifndef LLVM_CODEGEN_REGALLOCCOMMON_H
  10. #define LLVM_CODEGEN_REGALLOCCOMMON_H
  11.  
  12. #include <functional>
  13.  
  14. namespace llvm {
  15.  
  16. class TargetRegisterClass;
  17. class TargetRegisterInfo;
  18.  
  19. typedef std::function<bool(const TargetRegisterInfo &TRI,
  20.                            const TargetRegisterClass &RC)> RegClassFilterFunc;
  21.  
  22. /// Default register class filter function for register allocation. All virtual
  23. /// registers should be allocated.
  24. static inline bool allocateAllRegClasses(const TargetRegisterInfo &,
  25.                                          const TargetRegisterClass &) {
  26.   return true;
  27. }
  28.  
  29. }
  30.  
  31. #endif // LLVM_CODEGEN_REGALLOCCOMMON_H
  32.