src/share/vm/oops/methodData.hpp

rev 6139 : 8031755: Type speculation should be used to optimize explicit null checks
Summary: feed profiling data about reference nullness to type speculation.
Reviewed-by:

*** 2050,2060 ****
  
    bool is_methodData() const volatile { return true; }
  
    // Whole-method sticky bits and flags
    enum {
!     _trap_hist_limit    = 19,   // decoupled from Deoptimization::Reason_LIMIT
      _trap_hist_mask     = max_jubyte,
      _extra_data_count   = 4     // extra DataLayout headers, for trap history
    }; // Public flag values
  private:
    uint _nof_decompiles;             // count of all nmethod removals
--- 2050,2060 ----
  
    bool is_methodData() const volatile { return true; }
  
    // Whole-method sticky bits and flags
    enum {
!     _trap_hist_limit    = 20,   // decoupled from Deoptimization::Reason_LIMIT
      _trap_hist_mask     = max_jubyte,
      _extra_data_count   = 4     // extra DataLayout headers, for trap history
    }; // Public flag values
  private:
    uint _nof_decompiles;             // count of all nmethod removals