91   //
  92   // The non-Parm edges of the returned map will contain updated global state,
  93   // and one or two edges before jvms->sp() will carry any return values.
  94   // Other map edges may contain locals or monitors, and should not
  95   // be changed in meaning.
  96   //
  97   // If the call traps, the returned map must have a control edge of top.
  98   // If the call can throw, the returned map must report has_exceptions().
  99   //
 100   // If the result is NULL, it means that this CallGenerator was unable
 101   // to handle the given call, and another CallGenerator should be consulted.
 102   virtual JVMState* generate(JVMState* jvms) = 0;
 103 
 104   // How to generate a call site that is inlined:
 105   static CallGenerator* for_inline(ciMethod* m, float expected_uses = -1);
 106   // How to generate code for an on-stack replacement handler.
 107   static CallGenerator* for_osr(ciMethod* m, int osr_bci);
 108 
 109   // How to generate vanilla out-of-line call sites:
 110   static CallGenerator* for_direct_call(ciMethod* m, bool separate_io_projs = false);   // static, special
 111   static CallGenerator* for_dynamic_call(ciMethod* m);   // invokedynamic
 112   static CallGenerator* for_virtual_call(ciMethod* m, int vtable_index);  // virtual, interface




 113 
 114   static CallGenerator* for_method_handle_inline(Node* method_handle,   JVMState* jvms, ciMethod* caller, ciMethod* callee, ciCallProfile profile);
 115   static CallGenerator* for_invokedynamic_inline(ciCallSite* call_site, JVMState* jvms, ciMethod* caller, ciMethod* callee, ciCallProfile profile);
 116 
 117   // How to generate a replace a direct call with an inline version
 118   static CallGenerator* for_late_inline(ciMethod* m, CallGenerator* inline_cg);
 119 
 120   // How to make a call but defer the decision whether to inline or not.
 121   static CallGenerator* for_warm_call(WarmCallInfo* ci,
 122                                       CallGenerator* if_cold,
 123                                       CallGenerator* if_hot);
 124 
 125   // How to make a call that optimistically assumes a receiver type:
 126   static CallGenerator* for_predicted_call(ciKlass* predicted_receiver,
 127                                            CallGenerator* if_missed,
 128                                            CallGenerator* if_hit,
 129                                            float hit_prob);
 130 
 131   // How to make a call that optimistically assumes a MethodHandle target:
 132   static CallGenerator* for_predicted_dynamic_call(ciMethodHandle* predicted_method_handle,

  91   //
  92   // The non-Parm edges of the returned map will contain updated global state,
  93   // and one or two edges before jvms->sp() will carry any return values.
  94   // Other map edges may contain locals or monitors, and should not
  95   // be changed in meaning.
  96   //
  97   // If the call traps, the returned map must have a control edge of top.
  98   // If the call can throw, the returned map must report has_exceptions().
  99   //
 100   // If the result is NULL, it means that this CallGenerator was unable
 101   // to handle the given call, and another CallGenerator should be consulted.
 102   virtual JVMState* generate(JVMState* jvms) = 0;
 103 
 104   // How to generate a call site that is inlined:
 105   static CallGenerator* for_inline(ciMethod* m, float expected_uses = -1);
 106   // How to generate code for an on-stack replacement handler.
 107   static CallGenerator* for_osr(ciMethod* m, int osr_bci);
 108 
 109   // How to generate vanilla out-of-line call sites:
 110   static CallGenerator* for_direct_call(ciMethod* m, bool separate_io_projs = false);   // static, special

 111   static CallGenerator* for_virtual_call(ciMethod* m, int vtable_index);  // virtual, interface
 112   static CallGenerator* for_dynamic_call(ciMethod* m);   // invokedynamic
 113 
 114   static CallGenerator* for_method_handle_call(Node* method_handle, JVMState* jvms, ciMethod* caller, ciMethod* callee, ciCallProfile profile);
 115   static CallGenerator* for_invokedynamic_call(                     JVMState* jvms, ciMethod* caller, ciMethod* callee, ciCallProfile profile);
 116 
 117   static CallGenerator* for_method_handle_inline(Node* method_handle,   JVMState* jvms, ciMethod* caller, ciMethod* callee, ciCallProfile profile);
 118   static CallGenerator* for_invokedynamic_inline(ciCallSite* call_site, JVMState* jvms, ciMethod* caller, ciMethod* callee, ciCallProfile profile);
 119 
 120   // How to generate a replace a direct call with an inline version
 121   static CallGenerator* for_late_inline(ciMethod* m, CallGenerator* inline_cg);
 122 
 123   // How to make a call but defer the decision whether to inline or not.
 124   static CallGenerator* for_warm_call(WarmCallInfo* ci,
 125                                       CallGenerator* if_cold,
 126                                       CallGenerator* if_hot);
 127 
 128   // How to make a call that optimistically assumes a receiver type:
 129   static CallGenerator* for_predicted_call(ciKlass* predicted_receiver,
 130                                            CallGenerator* if_missed,
 131                                            CallGenerator* if_hit,
 132                                            float hit_prob);
 133 
 134   // How to make a call that optimistically assumes a MethodHandle target:
 135   static CallGenerator* for_predicted_dynamic_call(ciMethodHandle* predicted_method_handle,