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comparison src/share/vm/opto/locknode.hpp @ 4790:b0ff910edfc9

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7128355: assert(!nocreate) failed: Cannot build a phi for a block already parsed Summary: Do not common BoxLock nodes and avoid creating phis of boxes. Reviewed-by: never
author kvn
date Thu, 12 Jan 2012 14:45:04 -0800
parents e9a5e0a812c8
children b9a9ed0f8eeb
comparison
equal deleted inserted replaced
4779:c8d8e124380c 4790:b0ff910edfc9
47 # include "adfiles/ad_ppc.hpp" 47 # include "adfiles/ad_ppc.hpp"
48 #endif 48 #endif
49 49
50 //------------------------------BoxLockNode------------------------------------ 50 //------------------------------BoxLockNode------------------------------------
51 class BoxLockNode : public Node { 51 class BoxLockNode : public Node {
52 const int _slot; 52 const int _slot; // stack slot
53 RegMask _inmask; 53 RegMask _inmask; // OptoReg corresponding to stack slot
54 bool _is_eliminated; // indicates this lock was safely eliminated 54 bool _is_eliminated; // Associated locks were safely eliminated
55 55
56 public: 56 public:
57 BoxLockNode( int lock ); 57 BoxLockNode( int lock );
58 virtual int Opcode() const; 58 virtual int Opcode() const;
59 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; 59 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const;
66 virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; } 66 virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
67 virtual uint ideal_reg() const { return Op_RegP; } 67 virtual uint ideal_reg() const { return Op_RegP; }
68 68
69 static OptoReg::Name reg(Node* box_node); 69 static OptoReg::Name reg(Node* box_node);
70 static BoxLockNode* box_node(Node* box_node); 70 static BoxLockNode* box_node(Node* box_node);
71 static bool same_slot(Node* box1, Node* box2); 71 static bool same_slot(Node* box1, Node* box2) {
72 return box1->as_BoxLock()->_slot == box2->as_BoxLock()->_slot;
73 }
72 int stack_slot() const { return _slot; } 74 int stack_slot() const { return _slot; }
73 75
74 bool is_eliminated() const { return _is_eliminated; } 76 bool is_eliminated() const { return _is_eliminated; }
75 // mark lock as eliminated. 77 // mark lock as eliminated.
76 void set_eliminated() { _is_eliminated = true; } 78 void set_eliminated() { _is_eliminated = true; }