Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.api/src/com/oracle/truffle/api/frame/PackedFrame.java @ 7296:8d9c7a109967
Fix elimination of unnecessary UnsafeCastNode
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Wed, 26 Dec 2012 13:36:41 -0800 |
parents | a4b84ba6dc2e |
children | 5e3d1a68664e |
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/* * Copyright (c) 2012, 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. */ package com.oracle.truffle.api.frame; /** * Represents a packed frame that represents a virtual frame. A packed frame instance can be retrieved with the * {@link VirtualFrame#pack()} method. It can be converted back into a virtual frame using {@link PackedFrame#unpack()}. * Instances of this type must not be stored in a field or cast to {@link java.lang.Object}. */ public interface PackedFrame { /** * Unpacks this frame and converts it back to a virtual frame. * @return the virtual frame that was the content of this packed frame */ VirtualFrame unpack(); }