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  1. //===-- llvm/CodeGen/TargetOpcodes.h - Target Indep Opcodes -----*- 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 file defines the target independent instruction opcodes.
  10. //
  11. //===----------------------------------------------------------------------===//
  12.  
  13. #ifndef LLVM_CODEGEN_TARGETOPCODES_H
  14. #define LLVM_CODEGEN_TARGETOPCODES_H
  15.  
  16. namespace llvm {
  17.  
  18. /// Invariant opcodes: All instruction sets have these as their low opcodes.
  19. ///
  20. namespace TargetOpcode {
  21. enum {
  22. #define HANDLE_TARGET_OPCODE(OPC) OPC,
  23. #define HANDLE_TARGET_OPCODE_MARKER(IDENT, OPC) IDENT = OPC,
  24. #include "llvm/Support/TargetOpcodes.def"
  25. };
  26. } // end namespace TargetOpcode
  27.  
  28. /// Check whether the given Opcode is a generic opcode that is not supposed
  29. /// to appear after ISel.
  30. inline bool isPreISelGenericOpcode(unsigned Opcode) {
  31.   return Opcode >= TargetOpcode::PRE_ISEL_GENERIC_OPCODE_START &&
  32.          Opcode <= TargetOpcode::PRE_ISEL_GENERIC_OPCODE_END;
  33. }
  34.  
  35. /// Check whether the given Opcode is a target-specific opcode.
  36. inline bool isTargetSpecificOpcode(unsigned Opcode) {
  37.   return Opcode > TargetOpcode::PRE_ISEL_GENERIC_OPCODE_END;
  38. }
  39.  
  40. /// \returns true if \p Opcode is an optimization hint opcode which is not
  41. /// supposed to appear after ISel.
  42. inline bool isPreISelGenericOptimizationHint(unsigned Opcode) {
  43.   return Opcode >= TargetOpcode::PRE_ISEL_GENERIC_OPTIMIZATION_HINT_START &&
  44.          Opcode <= TargetOpcode::PRE_ISEL_GENERIC_OPTIMIZATION_HINT_END;
  45. }
  46.  
  47. } // end namespace llvm
  48.  
  49. #endif
  50.