Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/AbstractNewArrayNode.java @ 16895:06c15e88d383
added factory method to all Node classes; replaced Node classes instantiation with calls to factory methods; replaced identity tests on Node classes with ' == <node class>.getGenClass()' idiom
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Mon, 18 Aug 2014 14:04:21 +0200 |
parents | cbd42807a31f |
children | f90dcdbbb75e |
line wrap: on
line source
/* * Copyright (c) 2009, 2011, 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.nodes.java; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; /** * The {@code AbstractNewArrayNode} is used for all 1-dimensional array allocations. */ @NodeInfo public class AbstractNewArrayNode extends AbstractNewObjectNode implements ArrayLengthProvider { @Input private ValueNode length; @Override public ValueNode length() { return length; } /** * Constructs a new AbstractNewArrayNode. * * @param stamp the stamp of the newly created array * @param length the node that produces the length for this allocation. * @param fillContents determines whether the array elements should be initialized to zero/null. */ public static AbstractNewArrayNode create(Stamp stamp, ValueNode length, boolean fillContents) { return new AbstractNewArrayNodeGen(stamp, length, fillContents); } protected AbstractNewArrayNode(Stamp stamp, ValueNode length, boolean fillContents) { super(stamp, fillContents); this.length = length; } /** * The list of node which produce input for this instruction. */ public ValueNode dimension(int index) { assert index == 0; return length(); } /** * The rank of the array allocated by this node, i.e. how many array dimensions. */ public int dimensionCount() { return 1; } @Override public void simplify(SimplifierTool tool) { Stamp stamp = length.stamp(); if (stamp instanceof IntegerStamp && ((IntegerStamp) stamp).isPositive()) { // otherwise, removing the allocation might swallow a NegativeArraySizeException super.simplify(tool); } } }