Mercurial > hg > graal-compiler
view graal/GraalCompiler/src/com/sun/c1x/ir/ArrayLength.java @ 2816:5526d82388be
Made more nodes floating (including the allocation nodes NewInstance, NewArray, and NewMultiArray).
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Mon, 30 May 2011 15:28:38 +0200 |
parents | d27bdbec3d67 |
children | bd17ac598c6e |
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/* * 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.sun.c1x.ir; import com.oracle.graal.graph.*; import com.sun.c1x.debug.*; import com.sun.c1x.util.*; import com.sun.cri.bytecode.*; import com.sun.cri.ci.*; /** * The {@code ArrayLength} instruction gets the length of an array. */ public final class ArrayLength extends Value { private static final int INPUT_COUNT = 1; private static final int INPUT_ARRAY = 0; private static final int SUCCESSOR_COUNT = 0; @Override protected int inputCount() { return super.inputCount() + INPUT_COUNT; } @Override protected int successorCount() { return super.successorCount() + SUCCESSOR_COUNT; } /** * The instruction that produces the array object. */ public Value array() { return (Value) inputs().get(super.inputCount() + INPUT_ARRAY); } public Value setArray(Value n) { return (Value) inputs().set(super.inputCount() + INPUT_ARRAY, n); } /** * Constructs a new ArrayLength instruction. * @param array the instruction producing the array * @param newFrameState the state after executing this instruction */ public ArrayLength(Value array, Graph graph) { super(CiKind.Int, INPUT_COUNT, SUCCESSOR_COUNT, graph); setArray(array); } @Override public void accept(ValueVisitor v) { v.visitArrayLength(this); } @Override public int valueNumber() { return Util.hash1(Bytecodes.ARRAYLENGTH, array()); } @Override public boolean valueEqual(Node i) { if (i instanceof ArrayLength) { ArrayLength o = (ArrayLength) i; return array() == o.array(); } return false; } @Override public void print(LogStream out) { out.print(array()).print(".length"); } }