13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_OPTO_VALUETYPENODE_HPP 26 #define SHARE_VM_OPTO_VALUETYPENODE_HPP 27 28 #include "opto/node.hpp" 29 #include "opto/connode.hpp" 30 31 class GraphKit; 32 33 //------------------------------ValueTypeNode------------------------------------- 34 // Node representing a value type in C2 IR 35 class ValueTypeNode : public TypeNode { 36 private: 37 ValueTypeNode(const TypeValueType* t, Node* oop) 38 : TypeNode(t, Values + t->value_klass()->nof_declared_nonstatic_fields()) { 39 init_class_id(Class_ValueType); 40 init_req(Oop, oop); 41 } 42 43 ValueTypeNode(const TypeValueType* t, Node* oop, int field_count) 44 : TypeNode(t, Values + field_count) { 45 init_class_id(Class_ValueType); 46 init_req(Oop, oop); 47 } 48 49 // Get the klass defining the field layout of the value type 50 ciValueKlass* value_klass() const { return type()->is_valuetype()->value_klass(); } 51 // Initialize the value type by loading its field values from memory 52 void load(PhaseGVN& gvn, Node* mem, Node* base, Node* ptr, ciInstanceKlass* holder, int holder_offset = 0); 53 // Checks if the value type is loaded from memory and if so returns the oop 54 Node* is_loaded(PhaseGVN* phase, const TypeValueType* t, Node* base = NULL, int holder_offset = 0); 55 56 enum { Control, // Control input 57 Oop, // Oop of TypeValueTypePtr 58 Values // Nodes corresponding to values of the value type's fields. 59 // Nodes are connected in increasing order of the index of the field 60 // they correspond to. Field indeces are defined in ciValueKlass::_field_index_map. 61 }; 62 63 public: 64 // Create a new ValueTypeNode with uninitialized values 65 static ValueTypeNode* make(PhaseGVN& gvn, ciValueKlass* klass); 66 // Create a new ValueTypeNode with default values 67 static Node* make_default(PhaseGVN& gvn, ciValueKlass* vk); 68 // Create a new ValueTypeNode and load its values from an oop 69 static Node* make(PhaseGVN& gvn, Node* mem, Node* oop); 70 // Create a new ValueTypeNode and load its values from a flattened value type field or array 71 static Node* make(PhaseGVN& gvn, ciValueKlass* vk, Node* mem, Node* obj, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0); 72 73 // Support for control flow merges 74 ValueTypeNode* clone_with_phis(PhaseGVN* gvn, Node* region); 75 bool has_phi_inputs(Node* region); 76 ValueTypeNode* merge_with(PhaseGVN* gvn, const ValueTypeNode* other, int pnum, bool transform); 77 78 // Store the value type as a flattened (headerless) representation 79 void store_flattened(GraphKit* kit, Node* base, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0) const; 80 // Store the field values to memory 81 void store(GraphKit* kit, Node* base, Node* ptr, ciInstanceKlass* holder, int holder_offset = 0) const; 82 83 // Get oop for heap allocated value type (may be TypePtr::NULL_PTR) 84 Node* get_oop() const { return in(Oop); } 85 void set_oop(Node* oop) { set_req(Oop, oop); } 86 // Allocates the value type (if not yet allocated) and returns the oop 87 Node* allocate(GraphKit* kit); 88 bool is_allocated(PhaseGVN* phase) const; 89 90 // Value type fields 91 uint field_count() const { return req() - Values; } 92 Node* field_value(uint index) const; 93 Node* field_value_by_offset(int offset, bool recursive = false) const; 94 void set_field_value(uint index, Node* value); 95 int field_offset(uint index) const; 96 ciType* field_type(uint index) const; 97 98 // Replace ValueTypeNodes in debug info at safepoints with SafePointScalarObjectNodes 99 void make_scalar_in_safepoints(Compile* C); 100 void pass_klass(Node* n, uint pos, const GraphKit& kit); 101 uint pass_fields(Node* call, int base_input, const GraphKit& kit, ciValueKlass* base_vk = NULL, int base_offset = 0); 102 void replace_call_results(Node* call, Compile* C); 103 104 // Allocation optimizations 105 void remove_redundant_allocations(PhaseIterGVN* igvn, PhaseIdealLoop* phase); 106 107 virtual Node* Ideal(PhaseGVN* phase, bool can_reshape); 108 virtual int Opcode() const; 109 110 #ifndef PRODUCT 111 virtual void dump_spec(outputStream* st) const; 112 #endif 113 }; 114 115 #endif // SHARE_VM_OPTO_VALUETYPENODE_HPP | 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_OPTO_VALUETYPENODE_HPP 26 #define SHARE_VM_OPTO_VALUETYPENODE_HPP 27 28 #include "opto/node.hpp" 29 #include "opto/connode.hpp" 30 31 class GraphKit; 32 33 class ValueTypeBaseNode : public TypeNode { 34 protected: 35 ValueTypeBaseNode(const Type* t, int nb_fields) 36 : TypeNode(t, nb_fields) { 37 init_class_id(Class_ValueTypeBase); 38 } 39 40 enum { Control, // Control input 41 Oop, // Oop of TypeValueTypePtr 42 Values // Nodes corresponding to values of the value type's fields. 43 // Nodes are connected in increasing order of the index of the field 44 // they correspond to. Field indeces are defined in ciValueKlass::_field_index_map. 45 }; 46 47 virtual const TypeValueTypePtr* value_type_ptr() const = 0; 48 // Get the klass defining the field layout of the value type 49 virtual ciValueKlass* value_klass() const = 0; 50 int make_scalar_in_safepoint(SafePointNode* sfpt, Node* root, PhaseGVN* gvn); 51 public: 52 // Support for control flow merges 53 bool has_phi_inputs(Node* region); 54 ValueTypeBaseNode* clone_with_phis(PhaseGVN* gvn, Node* region); 55 ValueTypeBaseNode* merge_with(PhaseGVN* gvn, const ValueTypeBaseNode* other, int pnum, bool transform); 56 57 // Get oop for heap allocated value type (may be TypePtr::NULL_PTR) 58 Node* get_oop() const { return in(Oop); } 59 void set_oop(Node* oop) { set_req(Oop, oop); } 60 61 // Value type fields 62 uint field_count() const { return req() - Values; } 63 Node* field_value(uint index) const; 64 Node* field_value_by_offset(int offset, bool recursive = false) const; 65 void set_field_value(uint index, Node* value); 66 int field_offset(uint index) const; 67 ciType* field_type(uint index) const; 68 69 // Replace ValueTypeNodes in debug info at safepoints with SafePointScalarObjectNodes 70 void make_scalar_in_safepoints(Node* root, PhaseGVN* gvn); 71 }; 72 73 //------------------------------ValueTypeNode------------------------------------- 74 // Node representing a value type in C2 IR 75 class ValueTypeNode : public ValueTypeBaseNode { 76 friend class ValueTypeBaseNode; 77 private: 78 ValueTypeNode(const TypeValueType* t, Node* oop) 79 : ValueTypeBaseNode(t, Values + t->value_klass()->nof_declared_nonstatic_fields()) { 80 init_class_id(Class_ValueType); 81 init_req(Oop, oop); 82 } 83 84 ValueTypeNode(const TypeValueType* t, Node* oop, int field_count) 85 : ValueTypeBaseNode(t, Values + field_count) { 86 init_class_id(Class_ValueType); 87 init_req(Oop, oop); 88 } 89 90 // Initialize the value type by loading its field values from memory 91 void load(PhaseGVN& gvn, Node* mem, Node* base, Node* ptr, ciInstanceKlass* holder, int holder_offset = 0); 92 // Checks if the value type is loaded from memory and if so returns the oop 93 Node* is_loaded(PhaseGVN* phase, const TypeValueType* t, Node* base = NULL, int holder_offset = 0); 94 95 const TypeValueTypePtr* value_type_ptr() const { return TypeValueTypePtr::make(bottom_type()->isa_valuetype()); } 96 // Get the klass defining the field layout of the value type 97 ciValueKlass* value_klass() const { return type()->is_valuetype()->value_klass(); } 98 99 public: 100 // Create a new ValueTypeNode with uninitialized values 101 static ValueTypeNode* make(PhaseGVN& gvn, ciValueKlass* klass); 102 // Create a new ValueTypeNode with default values 103 static Node* make_default(PhaseGVN& gvn, ciValueKlass* vk); 104 // Create a new ValueTypeNode and load its values from an oop 105 static Node* make(PhaseGVN& gvn, Node* mem, Node* oop); 106 // Create a new ValueTypeNode and load its values from a flattened value type field or array 107 static Node* make(PhaseGVN& gvn, ciValueKlass* vk, Node* mem, Node* obj, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0); 108 109 110 // Store the value type as a flattened (headerless) representation 111 void store_flattened(GraphKit* kit, Node* base, Node* ptr, ciInstanceKlass* holder = NULL, int holder_offset = 0) const; 112 // Store the field values to memory 113 void store(GraphKit* kit, Node* base, Node* ptr, ciInstanceKlass* holder, int holder_offset = 0) const; 114 115 // Allocates the value type (if not yet allocated) and returns the oop 116 Node* allocate(GraphKit* kit); 117 bool is_allocated(PhaseGVN* phase) const; 118 119 void pass_klass(Node* n, uint pos, const GraphKit& kit); 120 uint pass_fields(Node* call, int base_input, const GraphKit& kit, ciValueKlass* base_vk = NULL, int base_offset = 0); 121 void replace_call_results(Node* call, Compile* C); 122 123 // Allocation optimizations 124 void remove_redundant_allocations(PhaseIterGVN* igvn, PhaseIdealLoop* phase); 125 126 virtual Node* Ideal(PhaseGVN* phase, bool can_reshape); 127 virtual int Opcode() const; 128 129 #ifndef PRODUCT 130 virtual void dump_spec(outputStream* st) const; 131 #endif 132 }; 133 134 //------------------------------ValueTypeNode------------------------------------- 135 // Node representing a value type as a pointer in C2 IR 136 class ValueTypePtrNode : public ValueTypeBaseNode { 137 private: 138 ciValueKlass* value_klass() const { return type()->is_valuetypeptr()->value_type()->value_klass(); } 139 const TypeValueTypePtr* value_type_ptr() const { return bottom_type()->isa_valuetypeptr(); } 140 public: 141 142 ValueTypePtrNode(ValueTypeNode* vt, Node* oop, Compile* C) 143 : ValueTypeBaseNode(TypeValueTypePtr::make(vt->type()->is_valuetype())->cast_to_ptr_type(TypePtr::NotNull), vt->req()) { 144 init_class_id(Class_ValueTypePtr); 145 for (uint i = Oop+1; i < vt->req(); i++) { 146 init_req(i, vt->in(i)); 147 } 148 init_req(Oop, oop); 149 C->add_value_type_ptr(this); 150 } 151 152 virtual int Opcode() const; 153 }; 154 155 #endif // SHARE_VM_OPTO_VALUETYPENODE_HPP |