613 assert(t->isa_narrowklass(), "only narrow klass ptr here");
614 return t->make_ptr();
615 }
616
617 Node* EncodePKlassNode::Identity(PhaseTransform* phase) {
618 const Type *t = phase->type( in(1) );
619 if( t == Type::TOP ) return in(1);
620
621 if (in(1)->is_DecodeNKlass()) {
622 // (EncodePKlass (DecodeNKlass p)) -> p
623 return in(1)->in(1);
624 }
625 return this;
626 }
627
628 const Type *EncodePKlassNode::Value( PhaseTransform *phase ) const {
629 const Type *t = phase->type( in(1) );
630 if (t == Type::TOP) return Type::TOP;
631 assert (t != TypePtr::NULL_PTR, "null klass?");
632
633 assert(UseCompressedKlassPointers && t->isa_klassptr(), "only klass ptr here");
634 return t->make_narrowklass();
635 }
636
637
638 //=============================================================================
639 //------------------------------Identity---------------------------------------
640 Node *Conv2BNode::Identity( PhaseTransform *phase ) {
641 const Type *t = phase->type( in(1) );
642 if( t == Type::TOP ) return in(1);
643 if( t == TypeInt::ZERO ) return in(1);
644 if( t == TypeInt::ONE ) return in(1);
645 if( t == TypeInt::BOOL ) return in(1);
646 return this;
647 }
648
649 //------------------------------Value------------------------------------------
650 const Type *Conv2BNode::Value( PhaseTransform *phase ) const {
651 const Type *t = phase->type( in(1) );
652 if( t == Type::TOP ) return Type::TOP;
653 if( t == TypeInt::ZERO ) return TypeInt::ZERO;
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613 assert(t->isa_narrowklass(), "only narrow klass ptr here");
614 return t->make_ptr();
615 }
616
617 Node* EncodePKlassNode::Identity(PhaseTransform* phase) {
618 const Type *t = phase->type( in(1) );
619 if( t == Type::TOP ) return in(1);
620
621 if (in(1)->is_DecodeNKlass()) {
622 // (EncodePKlass (DecodeNKlass p)) -> p
623 return in(1)->in(1);
624 }
625 return this;
626 }
627
628 const Type *EncodePKlassNode::Value( PhaseTransform *phase ) const {
629 const Type *t = phase->type( in(1) );
630 if (t == Type::TOP) return Type::TOP;
631 assert (t != TypePtr::NULL_PTR, "null klass?");
632
633 assert(UseCompressedClassPointers && t->isa_klassptr(), "only klass ptr here");
634 return t->make_narrowklass();
635 }
636
637
638 //=============================================================================
639 //------------------------------Identity---------------------------------------
640 Node *Conv2BNode::Identity( PhaseTransform *phase ) {
641 const Type *t = phase->type( in(1) );
642 if( t == Type::TOP ) return in(1);
643 if( t == TypeInt::ZERO ) return in(1);
644 if( t == TypeInt::ONE ) return in(1);
645 if( t == TypeInt::BOOL ) return in(1);
646 return this;
647 }
648
649 //------------------------------Value------------------------------------------
650 const Type *Conv2BNode::Value( PhaseTransform *phase ) const {
651 const Type *t = phase->type( in(1) );
652 if( t == Type::TOP ) return Type::TOP;
653 if( t == TypeInt::ZERO ) return TypeInt::ZERO;
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