src/hotspot/cpu/zero/smallRegisterMap_zero.inline.hpp

*** 26,22 ***
  #define CPU_ZERO_SMALLREGISTERMAP_ZERO_INLINE_HPP
  
  #include "runtime/frame.inline.hpp"
  #include "runtime/registerMap.hpp"
  
  // Java frames don't have callee saved registers (except for rfp), so we can use a smaller RegisterMap
! class SmallRegisterMap {
!   constexpr SmallRegisterMap() = default;
!   ~SmallRegisterMap() = default;
!   NONCOPYABLE(SmallRegisterMap);
  
- public:
-   static const SmallRegisterMap* instance() {
-     static constexpr SmallRegisterMap the_instance{};
-     return &the_instance;
-   }
- private:
    static void assert_is_rfp(VMReg r) NOT_DEBUG_RETURN
                                       DEBUG_ONLY({ Unimplemented(); })
  public:
    // as_RegisterMap is used when we didn't want to templatize and abstract over RegisterMap type to support SmallRegisterMap
    // Consider enhancing SmallRegisterMap to support those cases
--- 26,21 ---
  #define CPU_ZERO_SMALLREGISTERMAP_ZERO_INLINE_HPP
  
  #include "runtime/frame.inline.hpp"
  #include "runtime/registerMap.hpp"
  
+ class SmallRegisterMap;
+ 
  // Java frames don't have callee saved registers (except for rfp), so we can use a smaller RegisterMap
! template <bool IncludeArgs>
! class SmallRegisterMapType {
!   friend SmallRegisterMap;
! 
+   constexpr SmallRegisterMapType() = default;
+   ~SmallRegisterMapType() = default;
+   NONCOPYABLE(SmallRegisterMapType);
  
    static void assert_is_rfp(VMReg r) NOT_DEBUG_RETURN
                                       DEBUG_ONLY({ Unimplemented(); })
  public:
    // as_RegisterMap is used when we didn't want to templatize and abstract over RegisterMap type to support SmallRegisterMap
    // Consider enhancing SmallRegisterMap to support those cases

*** 67,11 ***
      return nullptr;
    }
  
    bool update_map()    const { return false; }
    bool walk_cont()     const { return false; }
!   bool include_argument_oops() const { return false; }
    void set_include_argument_oops(bool f)  {}
    bool in_cont()       const { return false; }
    stackChunkHandle stack_chunk() const { return stackChunkHandle(); }
  
  #ifdef ASSERT
--- 66,11 ---
      return nullptr;
    }
  
    bool update_map()    const { return false; }
    bool walk_cont()     const { return false; }
!   bool include_argument_oops() const { return IncludeArgs; }
    void set_include_argument_oops(bool f)  {}
    bool in_cont()       const { return false; }
    stackChunkHandle stack_chunk() const { return stackChunkHandle(); }
  
  #ifdef ASSERT