178 const TypeTuple* types);
179
180 Node* optimize_integer_cast_of_add(PhaseGVN* phase, BasicType bt);
181 Node* optimize_integer_cast(PhaseGVN* phase, BasicType bt);
182
183 bool higher_equal_types(PhaseGVN* phase, const Node* other) const;
184
185 int extra_types_count() const {
186 return _extra_types == nullptr ? 0 : _extra_types->cnt();
187 }
188
189 const Type* extra_type_at(int i) const {
190 return _extra_types->field_at(i);
191 }
192
193 protected:
194 virtual bool depends_only_on_test_impl() const { return _dependency.is_floating(); }
195
196 private:
197 virtual Node* pin_node_under_control_impl() const;
198 };
199
200 //------------------------------CastIINode-------------------------------------
201 // cast integer to integer (different range)
202 class CastIINode: public ConstraintCastNode {
203 protected:
204 // Is this node dependent on a range check?
205 const bool _range_check_dependency;
206 virtual bool cmp(const Node &n) const;
207 virtual uint size_of() const;
208
209 public:
210 CastIINode(Node* ctrl, Node* n, const Type* t, const DependencyType& dependency = DependencyType::FloatingNarrowing, bool range_check_dependency = false, const TypeTuple* types = nullptr)
211 : ConstraintCastNode(ctrl, n, t, dependency, types), _range_check_dependency(range_check_dependency) {
212 assert(ctrl != nullptr, "control must be set");
213 init_class_id(Class_CastII);
214 }
215 virtual int Opcode() const;
216 virtual uint ideal_reg() const { return Op_RegI; }
217 virtual Node* Identity(PhaseGVN* phase);
310 init_class_id(Class_CastPP);
311 verify_type(n->bottom_type(), t);
312 }
313 virtual int Opcode() const;
314 virtual uint ideal_reg() const { return Op_RegP; }
315
316 private:
317 static void verify_type(const Type* in_type, const Type* out_type);
318 };
319
320 //------------------------------CheckCastPPNode--------------------------------
321 // for _checkcast, cast pointer to pointer (different type), without JOIN,
322 class CheckCastPPNode: public ConstraintCastNode {
323 public:
324 CheckCastPPNode(Node* ctrl, Node* n, const Type* t, const DependencyType& dependency = DependencyType::FloatingNarrowing, const TypeTuple* types = nullptr)
325 : ConstraintCastNode(ctrl, n, t, dependency, types) {
326 assert(ctrl != nullptr, "control must be set");
327 init_class_id(Class_CheckCastPP);
328 }
329
330 virtual const Type* Value(PhaseGVN* phase) const;
331 virtual int Opcode() const;
332 virtual uint ideal_reg() const { return Op_RegP; }
333
334 private:
335 virtual bool depends_only_on_test_impl() const { return !type()->isa_rawptr() && ConstraintCastNode::depends_only_on_test_impl(); }
336 virtual Node* pin_node_under_control_impl() const;
337 };
338
339
340 //------------------------------CastX2PNode-------------------------------------
341 // convert a machine-pointer-sized integer to a raw pointer
342 class CastX2PNode : public Node {
343 public:
344 CastX2PNode( Node *n ) : Node(nullptr, n) {}
345 virtual int Opcode() const;
346 virtual const Type* Value(PhaseGVN* phase) const;
347 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
348 virtual Node* Identity(PhaseGVN* phase);
349 virtual uint ideal_reg() const { return Op_RegP; }
350 virtual const Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
351 };
352
353 //------------------------------CastP2XNode-------------------------------------
354 // Used in both 32-bit and 64-bit land.
355 // Used for card-marks and unsafe pointer math.
356 class CastP2XNode : public Node {
357 public:
358 CastP2XNode( Node *ctrl, Node *n ) : Node(ctrl, n) {}
359 virtual int Opcode() const;
360 virtual const Type* Value(PhaseGVN* phase) const;
361 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
362 virtual Node* Identity(PhaseGVN* phase);
363 virtual uint ideal_reg() const { return Op_RegX; }
364 virtual const Type *bottom_type() const { return TypeX_X; }
365
366 private:
367 // Return false to keep node from moving away from an associated card mark.
368 virtual bool depends_only_on_test_impl() const { return false; }
369 };
370
371
372
373 #endif // SHARE_OPTO_CASTNODE_HPP
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178 const TypeTuple* types);
179
180 Node* optimize_integer_cast_of_add(PhaseGVN* phase, BasicType bt);
181 Node* optimize_integer_cast(PhaseGVN* phase, BasicType bt);
182
183 bool higher_equal_types(PhaseGVN* phase, const Node* other) const;
184
185 int extra_types_count() const {
186 return _extra_types == nullptr ? 0 : _extra_types->cnt();
187 }
188
189 const Type* extra_type_at(int i) const {
190 return _extra_types->field_at(i);
191 }
192
193 protected:
194 virtual bool depends_only_on_test_impl() const { return _dependency.is_floating(); }
195
196 private:
197 virtual Node* pin_node_under_control_impl() const;
198 Node* ideal_cast_of_inline_type_node(PhaseGVN* phase);
199 };
200
201 //------------------------------CastIINode-------------------------------------
202 // cast integer to integer (different range)
203 class CastIINode: public ConstraintCastNode {
204 protected:
205 // Is this node dependent on a range check?
206 const bool _range_check_dependency;
207 virtual bool cmp(const Node &n) const;
208 virtual uint size_of() const;
209
210 public:
211 CastIINode(Node* ctrl, Node* n, const Type* t, const DependencyType& dependency = DependencyType::FloatingNarrowing, bool range_check_dependency = false, const TypeTuple* types = nullptr)
212 : ConstraintCastNode(ctrl, n, t, dependency, types), _range_check_dependency(range_check_dependency) {
213 assert(ctrl != nullptr, "control must be set");
214 init_class_id(Class_CastII);
215 }
216 virtual int Opcode() const;
217 virtual uint ideal_reg() const { return Op_RegI; }
218 virtual Node* Identity(PhaseGVN* phase);
311 init_class_id(Class_CastPP);
312 verify_type(n->bottom_type(), t);
313 }
314 virtual int Opcode() const;
315 virtual uint ideal_reg() const { return Op_RegP; }
316
317 private:
318 static void verify_type(const Type* in_type, const Type* out_type);
319 };
320
321 //------------------------------CheckCastPPNode--------------------------------
322 // for _checkcast, cast pointer to pointer (different type), without JOIN,
323 class CheckCastPPNode: public ConstraintCastNode {
324 public:
325 CheckCastPPNode(Node* ctrl, Node* n, const Type* t, const DependencyType& dependency = DependencyType::FloatingNarrowing, const TypeTuple* types = nullptr)
326 : ConstraintCastNode(ctrl, n, t, dependency, types) {
327 assert(ctrl != nullptr, "control must be set");
328 init_class_id(Class_CheckCastPP);
329 }
330
331 virtual Node* Identity(PhaseGVN* phase);
332 virtual const Type* Value(PhaseGVN* phase) const;
333 virtual int Opcode() const;
334 virtual uint ideal_reg() const { return Op_RegP; }
335
336 private:
337 virtual bool depends_only_on_test_impl() const { return !type()->isa_rawptr() && ConstraintCastNode::depends_only_on_test_impl(); }
338 virtual Node* pin_node_under_control_impl() const;
339 };
340
341
342 //------------------------------CastX2PNode-------------------------------------
343 // convert a machine-pointer-sized integer to a raw pointer
344 class CastX2PNode : public Node {
345 public:
346 CastX2PNode( Node *n ) : Node(nullptr, n) {}
347 virtual int Opcode() const;
348 virtual const Type* Value(PhaseGVN* phase) const;
349 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
350 virtual Node* Identity(PhaseGVN* phase);
351 virtual uint ideal_reg() const { return Op_RegP; }
352 virtual const Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
353 };
354
355 // Cast an integer to a narrow oop
356 class CastI2NNode : public TypeNode {
357 public:
358 CastI2NNode(Node* ctrl, Node* n, const Type* t) : TypeNode(t, 2) {
359 init_req(0, ctrl);
360 init_req(1, n);
361 }
362 virtual int Opcode() const;
363 virtual uint ideal_reg() const { return Op_RegN; }
364
365 private:
366 virtual bool depends_only_on_test_impl() const { return false; }
367 };
368
369 //------------------------------CastP2XNode-------------------------------------
370 // Used in both 32-bit and 64-bit land.
371 // Used for card-marks and unsafe pointer math.
372 class CastP2XNode : public Node {
373 public:
374 CastP2XNode( Node *ctrl, Node *n ) : Node(ctrl, n) {}
375 virtual int Opcode() const;
376 virtual const Type* Value(PhaseGVN* phase) const;
377 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
378 virtual Node* Identity(PhaseGVN* phase);
379 virtual uint ideal_reg() const { return Op_RegX; }
380 virtual const Type *bottom_type() const { return TypeX_X; }
381
382 private:
383 // Return false to keep node from moving away from an associated card mark.
384 virtual bool depends_only_on_test_impl() const { return false; }
385 };
386
387 #endif // SHARE_OPTO_CASTNODE_HPP
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