Mercurial > hg > graal-jvmci-8
view graal/GraalCompiler/src/com/sun/c1x/ir/ArrayLength.java @ 2611:bd235cb4375a
FrameState cleanup: split into FrameStateBuilder and fixed-size FrameState, removed MutableFrameState
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Fri, 06 May 2011 17:08:00 +0200 |
parents | fec99fc30af1 |
children | 91d3952f7eb7 |
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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.c1x.value.*; import com.sun.cri.bytecode.*; import com.sun.cri.ci.*; /** * The {@code ArrayLength} instruction gets the length of an array. * * @author Ben L. Titzer */ public final class ArrayLength extends AccessArray { private static final int INPUT_COUNT = 0; private static final int SUCCESSOR_COUNT = 0; /** * Constructs a new ArrayLength instruction. * @param array the instruction producing the array * @param newFrameState the state before executing this instruction */ public ArrayLength(Value array, FrameState newFrameState, Graph graph) { super(CiKind.Int, array, newFrameState, INPUT_COUNT, SUCCESSOR_COUNT, graph); } @Override public void accept(ValueVisitor v) { v.visitArrayLength(this); } @Override public int valueNumber() { return Util.hash1(Bytecodes.ARRAYLENGTH, array()); } @Override public boolean valueEqual(Instruction 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"); } }