Mercurial > hg > truffle
view graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/nodes/ExplodeLoopNode.java @ 14991:64dcb92ee75a
Truffle: Change signature for Truffle calls from (PackedFrame, Arguments) to (Object[]).
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sun, 06 Apr 2014 17:46:24 +0200 |
parents | 102b5249e97e |
children | 882f4cb7cfcf |
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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.graal.replacements.nodes; import java.util.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.type.*; import com.oracle.graal.replacements.Snippet.VarargsParameter; /** * Placeholder node to denote to snippet preparation that the following loop must be completely * unrolled. * * @see VarargsParameter */ public final class ExplodeLoopNode extends FixedWithNextNode { public ExplodeLoopNode() { super(StampFactory.forVoid()); } public LoopBeginNode findLoopBegin() { Node next = next(); ArrayList<Node> succs = new ArrayList<>(); while (!(next instanceof LoopBeginNode)) { assert next != null : "cannot find loop after " + this; for (Node n : next.cfgSuccessors()) { succs.add(n); } if (succs.size() == 1) { next = succs.get(0); } else { return null; } } return (LoopBeginNode) next; } /** * A call to this method must be placed immediately prior to the loop that is to be exploded. */ @NodeIntrinsic public static native void explodeLoop(); }