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comparison src/share/vm/opto/escape.hpp @ 4113:8c57262447d3

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7105605: Use EA info to optimize pointers compare Summary: optimize pointers compare using EA information. Reviewed-by: never, twisti
author kvn
date Mon, 14 Nov 2011 18:38:03 -0800
parents 59e515ee9354
children cc81b9c09bbb
comparison
equal deleted inserted replaced
4112:e8fdaf4a66cb 4113:8c57262447d3
234 // that pointer values loaded from 234 // that pointer values loaded from
235 // a field which has not been set 235 // a field which has not been set
236 // are assumed to point to. 236 // are assumed to point to.
237 uint _oop_null; // ConP(#NULL)->_idx 237 uint _oop_null; // ConP(#NULL)->_idx
238 uint _noop_null; // ConN(#NULL)->_idx 238 uint _noop_null; // ConN(#NULL)->_idx
239 Node* _pcmp_neq; // ConI(#CC_GT)
240 Node* _pcmp_eq; // ConI(#CC_EQ)
239 241
240 Compile * _compile; // Compile object for current compilation 242 Compile * _compile; // Compile object for current compilation
241 PhaseIterGVN * _igvn; // Value numbering 243 PhaseIterGVN * _igvn; // Value numbering
242 244
243 // Address of an element in _nodes. Used when the element is to be modified 245 // Address of an element in _nodes. Used when the element is to be modified
349 // Propagate escape states to referenced nodes. 351 // Propagate escape states to referenced nodes.
350 bool propagate_escape_state(GrowableArray<int>* cg_worklist, 352 bool propagate_escape_state(GrowableArray<int>* cg_worklist,
351 GrowableArray<uint>* worklist, 353 GrowableArray<uint>* worklist,
352 PointsToNode::EscapeState esc_state); 354 PointsToNode::EscapeState esc_state);
353 355
356 // Optimize objects compare.
357 Node* optimize_ptr_compare(Node* n);
358
354 // Compute the escape information 359 // Compute the escape information
355 bool compute_escape(); 360 bool compute_escape();
356 361
357 public: 362 public:
358 ConnectionGraph(Compile *C, PhaseIterGVN *igvn); 363 ConnectionGraph(Compile *C, PhaseIterGVN *igvn);