Mercurial > hg > graal-compiler
view graal/GraalCompiler/src/com/sun/c1x/ir/NewArray.java @ 2812:d27bdbec3d67
Removed ArrayLength from CFG. Fixed an issue when scheduling Merge instructions within a block.
If a block only consists of a single Merge instruction, we have to schedule this instruction as the first instruction.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Mon, 30 May 2011 15:24:26 +0200 |
parents | 440ceca8e3d7 |
children | 5526d82388be |
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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.cri.ci.*; /** * The {@code NewArray} class is the base of all instructions that allocate arrays. */ public abstract class NewArray extends StateSplit { private static final int INPUT_COUNT = 1; private static final int INPUT_LENGTH = 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 length of this array. */ public Value length() { return (Value) inputs().get(super.inputCount() + INPUT_LENGTH); } public Value setLength(Value n) { return (Value) inputs().set(super.inputCount() + INPUT_LENGTH, n); } /** * Constructs a new NewArray instruction. * @param length the instruction that produces the length for this allocation * @param stateBefore the state before the allocation * @param inputCount * @param successorCount * @param graph */ NewArray(Value length, int inputCount, int successorCount, Graph graph) { super(CiKind.Object, inputCount + INPUT_COUNT, successorCount + SUCCESSOR_COUNT, graph); setFlag(Flag.NonNull); setLength(length); } @Override public boolean needsStateAfter() { return false; } }