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comparison src/share/vm/opto/locknode.hpp @ 66:6dbf1a175d6b

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6672848: (Escape Analysis) improve lock elimination with EA Summary: Remove lock/unlock MemBar nodes and specify locks in debug info for deoptimization. Reviewed-by: never
author kvn
date Fri, 14 Mar 2008 16:40:42 -0700
parents a61af66fc99e
children d1605aabd0a1
comparison
equal deleted inserted replaced
65:99269dbf4ba8 66:6dbf1a175d6b
25 //------------------------------BoxLockNode------------------------------------ 25 //------------------------------BoxLockNode------------------------------------
26 class BoxLockNode : public Node { 26 class BoxLockNode : public Node {
27 public: 27 public:
28 const int _slot; 28 const int _slot;
29 RegMask _inmask; 29 RegMask _inmask;
30 bool _is_eliminated; // indicates this lock was safely eliminated
30 31
31 BoxLockNode( int lock ); 32 BoxLockNode( int lock );
32 virtual int Opcode() const; 33 virtual int Opcode() const;
33 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; 34 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const;
34 virtual uint size(PhaseRegAlloc *ra_) const; 35 virtual uint size(PhaseRegAlloc *ra_) const;
39 virtual uint cmp( const Node &n ) const; 40 virtual uint cmp( const Node &n ) const;
40 virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; } 41 virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
41 virtual uint ideal_reg() const { return Op_RegP; } 42 virtual uint ideal_reg() const { return Op_RegP; }
42 43
43 static OptoReg::Name stack_slot(Node* box_node); 44 static OptoReg::Name stack_slot(Node* box_node);
45
46 bool is_eliminated() { return _is_eliminated; }
47 // mark lock as eliminated.
48 void set_eliminated() { _is_eliminated = true; }
44 49
45 #ifndef PRODUCT 50 #ifndef PRODUCT
46 virtual void format( PhaseRegAlloc *, outputStream *st ) const; 51 virtual void format( PhaseRegAlloc *, outputStream *st ) const;
47 virtual void dump_spec(outputStream *st) const { st->print(" Lock %d",_slot); } 52 virtual void dump_spec(outputStream *st) const { st->print(" Lock %d",_slot); }
48 #endif 53 #endif