hotspot/src/share/vm/ci/ciMethodHandle.hpp
author twisti
Tue, 05 Jan 2010 15:21:25 +0100
changeset 4567 7fc02fbe5c7a
child 5547 f4b087cbb361
permissions -rw-r--r--
6893268: additional dynamic language related optimizations in C2 Summary: C2 needs some additional optimizations to be able to handle MethodHandle invokes and invokedynamic instructions at the best performance. Reviewed-by: kvn, never
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/*
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 * Copyright 2009 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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// ciMethodHandle
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//
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// The class represents a java.dyn.MethodHandle object.
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class ciMethodHandle : public ciInstance {
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private:
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  ciMethod* _callee;
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  // Return an adapter for this MethodHandle.
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  ciMethod* get_adapter(bool is_invokedynamic) const;
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protected:
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  void print_impl(outputStream* st);
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public:
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  ciMethodHandle(instanceHandle h_i) : ciInstance(h_i) {};
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  // What kind of ciObject is this?
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  bool is_method_handle() const { return true; }
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  ciMethod* callee() const { return _callee; }
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  void  set_callee(ciMethod* m) { _callee = m; }
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  // Return an adapter for a MethodHandle call.
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  ciMethod* get_method_handle_adapter() const {
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    return get_adapter(false);
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  }
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  // Return an adapter for an invokedynamic call.
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  ciMethod* get_invokedynamic_adapter() const {
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    return get_adapter(true);
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  }
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};