Mercurial > hg > graal-jvmci-8
diff src/share/vm/opto/memnode.hpp @ 164:c436414a719e
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 | 885ed790ecf0 |
children | 9148c65abefc |
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--- a/src/share/vm/opto/memnode.hpp Wed May 21 10:45:07 2008 -0700 +++ b/src/share/vm/opto/memnode.hpp Wed May 21 13:46:23 2008 -0700 @@ -161,6 +161,10 @@ // then call the virtual add() to set the type. virtual const Type *Value( PhaseTransform *phase ) const; + // Common methods for LoadKlass and LoadNKlass nodes. + const Type *klass_value_common( PhaseTransform *phase ) const; + Node *klass_identity_common( PhaseTransform *phase ); + virtual uint ideal_reg() const; virtual const Type *bottom_type() const; // Following method is copied from TypeNode: @@ -362,14 +366,35 @@ // Load a Klass from an object class LoadKlassNode : public LoadPNode { public: - LoadKlassNode( Node *c, Node *mem, Node *adr, const TypePtr *at, const TypeKlassPtr *tk = TypeKlassPtr::OBJECT ) + LoadKlassNode( Node *c, Node *mem, Node *adr, const TypePtr *at, const TypeKlassPtr *tk ) : LoadPNode(c,mem,adr,at,tk) {} virtual int Opcode() const; virtual const Type *Value( PhaseTransform *phase ) const; virtual Node *Identity( PhaseTransform *phase ); virtual bool depends_only_on_test() const { return true; } + + // Polymorphic factory method: + static Node* make( PhaseGVN& gvn, Node *mem, Node *adr, const TypePtr* at, + const TypeKlassPtr *tk = TypeKlassPtr::OBJECT ); }; +//------------------------------LoadNKlassNode--------------------------------- +// 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 ) + : 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 const Type *Value( PhaseTransform *phase ) const; + virtual Node *Identity( PhaseTransform *phase ); + virtual bool depends_only_on_test() const { return true; } +}; + + //------------------------------LoadSNode-------------------------------------- // Load a short (16bits signed) from memory class LoadSNode : public LoadNode {