/* * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. *
*/
//------------------------------EncodeP-------------------------------- // Encodes an oop pointers into its compressed form // Takes an extra argument which is the real heap base as a long which // may be useful for code generation in the backend. class EncodePNode : public EncodeNarrowPtrNode { public:
EncodePNode(Node* value, const Type* type):
EncodeNarrowPtrNode(value, type) {
init_class_id(Class_EncodeP);
} virtualint Opcode() const; virtual Node* Identity(PhaseGVN* phase); virtualconst Type* Value(PhaseGVN* phase) const;
};
//------------------------------EncodePKlass-------------------------------- // Encodes a klass pointer into its compressed form // Takes an extra argument which is the real heap base as a long which // may be useful for code generation in the backend. class EncodePKlassNode : public EncodeNarrowPtrNode { public:
EncodePKlassNode(Node* value, const Type* type):
EncodeNarrowPtrNode(value, type) {
init_class_id(Class_EncodePKlass);
} virtualint Opcode() const; virtual Node* Identity(PhaseGVN* phase); virtualconst Type* Value(PhaseGVN* phase) const;
};
//------------------------------DecodeN-------------------------------- // Converts a narrow oop into a real oop ptr. // Takes an extra argument which is the real heap base as a long which // may be useful for code generation in the backend. class DecodeNNode : public DecodeNarrowPtrNode { public:
DecodeNNode(Node* value, const Type* type):
DecodeNarrowPtrNode(value, type) {
init_class_id(Class_DecodeN);
} virtualint Opcode() const; virtualconst Type* Value(PhaseGVN* phase) const; virtual Node* Identity(PhaseGVN* phase);
};
//------------------------------DecodeNKlass-------------------------------- // Converts a narrow klass pointer into a real klass ptr. // Takes an extra argument which is the real heap base as a long which // may be useful for code generation in the backend. class DecodeNKlassNode : public DecodeNarrowPtrNode { public:
DecodeNKlassNode(Node* value, const Type* type):
DecodeNarrowPtrNode(value, type) {
init_class_id(Class_DecodeNKlass);
} virtualint Opcode() const; virtualconst Type* Value(PhaseGVN* phase) const; virtual Node* Identity(PhaseGVN* phase);
};
#endif// SHARE_OPTO_NARROWPTRNODE_HPP
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