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comparison src/share/vm/opto/parseHelper.cpp @ 164:c436414a719e

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6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions Summary: Add LoadNKlass and CMoveN nodes, use CmpN and ConN nodes to generate narrow oops compare instructions. Reviewed-by: never, rasbold
author kvn
date Wed, 21 May 2008 13:46:23 -0700
parents a61af66fc99e
children d1605aabd0a1
comparison
equal deleted inserted replaced
163:885ed790ecf0 164:c436414a719e
36 // Get base of thread-local storage area 36 // Get base of thread-local storage area
37 Node* thread = _gvn.transform( new (C, 1) ThreadLocalNode() ); 37 Node* thread = _gvn.transform( new (C, 1) ThreadLocalNode() );
38 38
39 // Get method 39 // Get method
40 const TypeInstPtr* method_type = TypeInstPtr::make(TypePtr::Constant, method->klass(), true, method, 0); 40 const TypeInstPtr* method_type = TypeInstPtr::make(TypePtr::Constant, method->klass(), true, method, 0);
41 Node *method_node = _gvn.transform( new (C, 1) ConPNode(method_type) ); 41 Node *method_node = _gvn.transform( ConNode::make(C, method_type) );
42 42
43 kill_dead_locals(); 43 kill_dead_locals();
44 44
45 // For some reason, this call reads only raw memory. 45 // For some reason, this call reads only raw memory.
46 const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM; 46 const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM;
141 141
142 // Extract the array klass type 142 // Extract the array klass type
143 int klass_offset = oopDesc::klass_offset_in_bytes(); 143 int klass_offset = oopDesc::klass_offset_in_bytes();
144 Node* p = basic_plus_adr( ary, ary, klass_offset ); 144 Node* p = basic_plus_adr( ary, ary, klass_offset );
145 // p's type is array-of-OOPS plus klass_offset 145 // p's type is array-of-OOPS plus klass_offset
146 Node* array_klass = _gvn.transform(new (C, 3) LoadKlassNode(0, immutable_memory(), p, TypeInstPtr::KLASS)); 146 Node* array_klass = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeInstPtr::KLASS) );
147 // Get the array klass 147 // Get the array klass
148 const TypeKlassPtr *tak = _gvn.type(array_klass)->is_klassptr(); 148 const TypeKlassPtr *tak = _gvn.type(array_klass)->is_klassptr();
149 149
150 // array_klass's type is generally INexact array-of-oop. Heroically 150 // array_klass's type is generally INexact array-of-oop. Heroically
151 // cast the array klass to EXACT array and uncommon-trap if the cast 151 // cast the array klass to EXACT array and uncommon-trap if the cast
187 // Come here for polymorphic array klasses 187 // Come here for polymorphic array klasses
188 188
189 // Extract the array element class 189 // Extract the array element class
190 int element_klass_offset = objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc); 190 int element_klass_offset = objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc);
191 Node *p2 = basic_plus_adr(array_klass, array_klass, element_klass_offset); 191 Node *p2 = basic_plus_adr(array_klass, array_klass, element_klass_offset);
192 Node *a_e_klass = _gvn.transform(new (C, 3) LoadKlassNode(0, immutable_memory(), p2, tak)); 192 Node *a_e_klass = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p2, tak) );
193 193
194 // Check (the hard way) and throw if not a subklass. 194 // Check (the hard way) and throw if not a subklass.
195 // Result is ignored, we just need the CFG effects. 195 // Result is ignored, we just need the CFG effects.
196 gen_checkcast( obj, a_e_klass ); 196 gen_checkcast( obj, a_e_klass );
197 } 197 }