811   return NULL;
 812 }
 813 
 814 
 815 
 816 // Lookup the starting position of inputs we are interested in wrt. ideal nodes
 817 uint InstructForm::oper_input_base(FormDict &globals) {
 818   if( !_matrule ) return 1;     // Skip control for most nodes
 819 
 820   // Need special handling for matching some ideal nodes
 821   // i.e. Matching a return node
 822   if( strcmp(_matrule->_opType,"Return"    )==0 ||
 823       strcmp(_matrule->_opType,"Rethrow"   )==0 ||
 824       strcmp(_matrule->_opType,"TailCall"  )==0 ||
 825       strcmp(_matrule->_opType,"TailJump"  )==0 ||
 826       strcmp(_matrule->_opType,"SafePoint" )==0 ||
 827       strcmp(_matrule->_opType,"Halt"      )==0 )
 828     return AdlcVMDeps::Parms;   // Skip the machine-state edges
 829 
 830   if( _matrule->_rChild &&
 831       ( strcmp(_matrule->_rChild->_opType,"StrComp"   )==0 ||

 832         strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 ||
 833         strcmp(_matrule->_rChild->_opType,"StrIndexOf")==0 )) {
 834         // String.(compareTo/equals/indexOf) take 1 control and 4 memory edges.
 835     return 5;

 836   }
 837 
 838   // Check for handling of 'Memory' input/edge in the ideal world.
 839   // The AD file writer is shielded from knowledge of these edges.
 840   int base = 1;                 // Skip control
 841   base += _matrule->needs_ideal_memory_edge(globals);
 842 
 843   // Also skip the base-oop value for uses of derived oops.
 844   // The AD file writer is shielded from knowledge of these edges.
 845   base += needs_base_oop_edge(globals);
 846 
 847   return base;
 848 }
 849 
 850 // Implementation does not modify state of internal structures
 851 void InstructForm::build_components() {
 852   // Add top-level operands to the components
 853   if (_matrule)  _matrule->append_components(_localNames, _components);
 854 
 855   // Add parameters that "do not appear in match rule".

 811   return NULL;
 812 }
 813 
 814 
 815 
 816 // Lookup the starting position of inputs we are interested in wrt. ideal nodes
 817 uint InstructForm::oper_input_base(FormDict &globals) {
 818   if( !_matrule ) return 1;     // Skip control for most nodes
 819 
 820   // Need special handling for matching some ideal nodes
 821   // i.e. Matching a return node
 822   if( strcmp(_matrule->_opType,"Return"    )==0 ||
 823       strcmp(_matrule->_opType,"Rethrow"   )==0 ||
 824       strcmp(_matrule->_opType,"TailCall"  )==0 ||
 825       strcmp(_matrule->_opType,"TailJump"  )==0 ||
 826       strcmp(_matrule->_opType,"SafePoint" )==0 ||
 827       strcmp(_matrule->_opType,"Halt"      )==0 )
 828     return AdlcVMDeps::Parms;   // Skip the machine-state edges
 829 
 830   if( _matrule->_rChild &&
 831       ( strcmp(_matrule->_rChild->_opType,"AryEq"     )==0 ||
 832         strcmp(_matrule->_rChild->_opType,"StrComp"   )==0 ||
 833         strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 ||
 834         strcmp(_matrule->_rChild->_opType,"StrIndexOf")==0 )) {
 835         // String.(compareTo/equals/indexOf) and Arrays.equals
 836         // take 1 control and 1 memory edges.
 837     return 2;
 838   }
 839 
 840   // Check for handling of 'Memory' input/edge in the ideal world.
 841   // The AD file writer is shielded from knowledge of these edges.
 842   int base = 1;                 // Skip control
 843   base += _matrule->needs_ideal_memory_edge(globals);
 844 
 845   // Also skip the base-oop value for uses of derived oops.
 846   // The AD file writer is shielded from knowledge of these edges.
 847   base += needs_base_oop_edge(globals);
 848 
 849   return base;
 850 }
 851 
 852 // Implementation does not modify state of internal structures
 853 void InstructForm::build_components() {
 854   // Add top-level operands to the components
 855   if (_matrule)  _matrule->append_components(_localNames, _components);
 856 
 857   // Add parameters that "do not appear in match rule".