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7054512: Compress class pointers after perm gen removal

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Support of compress class pointers in the compilers.

Reviewed-by: kvn, twisti
This commit is contained in:
Roland Westrelin 2012-10-09 10:11:38 +02:00
parent 7162ad011c
commit 61eb5a0549
93 changed files with 1600 additions and 497 deletions
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15
hotspot/src/share/vm/opto/memnode.hpp
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@ -437,12 +437,12 @@ public:
// Load a narrow Klass from an object.
class LoadNKlassNode : public LoadNNode {
public:
LoadNKlassNode( Node *c, Node *mem, Node *adr, const TypePtr *at, const TypeNarrowOop *tk )
LoadNKlassNode( Node *c, Node *mem, Node *adr, const TypePtr *at, const TypeNarrowKlass *tk )
: LoadNNode(c,mem,adr,at,tk) {}
virtual int Opcode() const;
virtual uint ideal_reg() const { return Op_RegN; }
virtual int store_Opcode() const { return Op_StoreN; }
virtual BasicType memory_type() const { return T_NARROWOOP; }
virtual int store_Opcode() const { return Op_StoreNKlass; }
virtual BasicType memory_type() const { return T_NARROWKLASS; }
virtual const Type *Value( PhaseTransform *phase ) const;
virtual Node *Identity( PhaseTransform *phase );
@ -593,6 +593,15 @@ public:
virtual BasicType memory_type() const { return T_NARROWOOP; }
};
//------------------------------StoreNKlassNode--------------------------------------
// Store narrow klass to memory
class StoreNKlassNode : public StoreNNode {
public:
StoreNKlassNode( Node *c, Node *mem, Node *adr, const TypePtr* at, Node *val ) : StoreNNode(c,mem,adr,at,val) {}
virtual int Opcode() const;
virtual BasicType memory_type() const { return T_NARROWKLASS; }
};
//------------------------------StoreCMNode-----------------------------------
// Store card-mark byte to memory for CM
// The last StoreCM before a SafePoint must be preserved and occur after its "oop" store