32 class Node;
  33 
  34 class PhaseGVN;
  35 class PhaseTransform;
  36 
  37 class MathExactNode : public MultiNode {
  38 public:
  39   MathExactNode(Node* ctrl, Node* in1, Node* in2);
  40   enum {
  41     result_proj_node = 0,
  42     flags_proj_node = 1
  43   };
  44   virtual int Opcode() const;
  45   virtual Node* Identity(PhaseTransform* phase) { return this; }
  46   virtual Node* Ideal(PhaseGVN* phase, bool can_reshape) { return NULL; }
  47   virtual const Type* Value(PhaseTransform* phase) const { return bottom_type(); }
  48   virtual uint hash() const { return Node::hash(); }
  49   virtual bool is_CFG() const { return false; }
  50   virtual uint ideal_reg() const { return NotAMachineReg; }
  51 
  52   ProjNode* result_node() { return proj_out(result_proj_node); }
  53   ProjNode* flags_node() { return proj_out(flags_proj_node); }


  54 protected:
  55   Node* no_overflow(PhaseGVN *phase, Node* new_result);
  56 };
  57 
  58 class AddExactINode : public MathExactNode {
  59 public:
  60   AddExactINode(Node* ctrl, Node* in1, Node* in2) : MathExactNode(ctrl, in1, in2) {}
  61   virtual int Opcode() const;
  62   virtual const Type* bottom_type() const { return TypeTuple::INT_CC_PAIR; }
  63   virtual Node* match(const ProjNode* proj, const Matcher* m);
  64   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
  65 };
  66 
  67 class FlagsProjNode : public ProjNode {
  68 public:
  69   FlagsProjNode(Node* src, uint con) : ProjNode(src, con) {
  70     init_class_id(Class_FlagsProj);
  71   }
  72 
  73   virtual int Opcode() const;

  32 class Node;
  33 
  34 class PhaseGVN;
  35 class PhaseTransform;
  36 
  37 class MathExactNode : public MultiNode {
  38 public:
  39   MathExactNode(Node* ctrl, Node* in1, Node* in2);
  40   enum {
  41     result_proj_node = 0,
  42     flags_proj_node = 1
  43   };
  44   virtual int Opcode() const;
  45   virtual Node* Identity(PhaseTransform* phase) { return this; }
  46   virtual Node* Ideal(PhaseGVN* phase, bool can_reshape) { return NULL; }
  47   virtual const Type* Value(PhaseTransform* phase) const { return bottom_type(); }
  48   virtual uint hash() const { return Node::hash(); }
  49   virtual bool is_CFG() const { return false; }
  50   virtual uint ideal_reg() const { return NotAMachineReg; }
  51 
  52   ProjNode* result_node() const { return proj_out(result_proj_node); }
  53   ProjNode* flags_node() const { return proj_out(flags_proj_node); }
  54   Node* control_node() const;
  55   Node* non_throwing_branch() const;
  56 protected:
  57   Node* no_overflow(PhaseGVN *phase, Node* new_result);
  58 };
  59 
  60 class AddExactINode : public MathExactNode {
  61 public:
  62   AddExactINode(Node* ctrl, Node* in1, Node* in2) : MathExactNode(ctrl, in1, in2) {}
  63   virtual int Opcode() const;
  64   virtual const Type* bottom_type() const { return TypeTuple::INT_CC_PAIR; }
  65   virtual Node* match(const ProjNode* proj, const Matcher* m);
  66   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
  67 };
  68 
  69 class FlagsProjNode : public ProjNode {
  70 public:
  71   FlagsProjNode(Node* src, uint con) : ProjNode(src, con) {
  72     init_class_id(Class_FlagsProj);
  73   }
  74 
  75   virtual int Opcode() const;