902 if (!tst->is_Con()) record_for_igvn(iff); // Range-check and Null-check removal is later
903 return iff;
904 }
905
906 IfNode* create_and_xform_if(Node* ctrl, Node* tst, float prob, float cnt) {
907 IfNode* iff = new IfNode(ctrl, tst, prob, cnt);// New IfNode's
908 _gvn.transform(iff); // Value may be known at parse-time
909 // Place 'if' on worklist if it will be in graph
910 if (!tst->is_Con()) record_for_igvn(iff); // Range-check and Null-check removal is later
911 return iff;
912 }
913
914 // Insert a loop predicate into the graph
915 void add_predicate(int nargs = 0);
916 void add_predicate_impl(Deoptimization::DeoptReason reason, int nargs);
917
918 Node* make_constant_from_field(ciField* field, Node* obj);
919
920 // Produce new array node of stable type
921 Node* cast_array_to_stable(Node* ary, const TypeAryPtr* ary_type);
922 };
923
924 // Helper class to support building of control flow branches. Upon
925 // creation the map and sp at bci are cloned and restored upon de-
926 // struction. Typical use:
927 //
928 // { PreserveJVMState pjvms(this);
929 // // code of new branch
930 // }
931 // // here the JVM state at bci is established
932
933 class PreserveJVMState: public StackObj {
934 protected:
935 GraphKit* _kit;
936 #ifdef ASSERT
937 int _block; // PO of current block, if a Parse
938 int _bci;
939 #endif
940 SafePointNode* _map;
941 uint _sp;
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902 if (!tst->is_Con()) record_for_igvn(iff); // Range-check and Null-check removal is later
903 return iff;
904 }
905
906 IfNode* create_and_xform_if(Node* ctrl, Node* tst, float prob, float cnt) {
907 IfNode* iff = new IfNode(ctrl, tst, prob, cnt);// New IfNode's
908 _gvn.transform(iff); // Value may be known at parse-time
909 // Place 'if' on worklist if it will be in graph
910 if (!tst->is_Con()) record_for_igvn(iff); // Range-check and Null-check removal is later
911 return iff;
912 }
913
914 // Insert a loop predicate into the graph
915 void add_predicate(int nargs = 0);
916 void add_predicate_impl(Deoptimization::DeoptReason reason, int nargs);
917
918 Node* make_constant_from_field(ciField* field, Node* obj);
919
920 // Produce new array node of stable type
921 Node* cast_array_to_stable(Node* ary, const TypeAryPtr* ary_type);
922
923 Node* acmp(Node* a, Node* b);
924 };
925
926 // Helper class to support building of control flow branches. Upon
927 // creation the map and sp at bci are cloned and restored upon de-
928 // struction. Typical use:
929 //
930 // { PreserveJVMState pjvms(this);
931 // // code of new branch
932 // }
933 // // here the JVM state at bci is established
934
935 class PreserveJVMState: public StackObj {
936 protected:
937 GraphKit* _kit;
938 #ifdef ASSERT
939 int _block; // PO of current block, if a Parse
940 int _bci;
941 #endif
942 SafePointNode* _map;
943 uint _sp;
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