text: // Copyright 2014, VIXL authors
  // All rights reserved.
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  // modification, are permitted provided that the following conditions are met:
  //
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  //     this list of conditions and the following disclaimer.
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  //     this list of conditions and the following disclaimer in the documentation
  //     and/or other materials provided with the distribution.
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  //
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  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  #ifndef VIXL_EXAMPLES_NON_CONST_VISITOR_H_
  #define VIXL_EXAMPLES_NON_CONST_VISITOR_H_
  
  #include "aarch64/decoder-aarch64.h"
  #include "aarch64/macro-assembler-aarch64.h"
  
  class SwitchAddSubRegisterSources : public vixl::aarch64::DecoderVisitor {
   public:
    SwitchAddSubRegisterSources()
        : vixl::aarch64::DecoderVisitor(kNonConstVisitor) {}
  
    // Our visitor switches the register sources for some add and sub instructions
    // (not all add and sub instructions).
  
    virtual void Visit(vixl::aarch64::Metadata* metadata,
                       const vixl::aarch64::Instruction* instr) VIXL_OVERRIDE;
  };
  
  
  void GenerateNonConstVisitorTestCode(vixl::aarch64::MacroAssembler* masm);
  
  int64_t RunNonConstVisitorTestGeneratedCode(
      const vixl::aarch64::Instruction* start_instr);
  
  void ModifyNonConstVisitorTestGeneratedCode(vixl::aarch64::Instruction* start,
                                              vixl::aarch64::Instruction* end);
  
  
  #endif
  