Mercurial > hg > graal-compiler
view graal/GraalCompiler/src/com/sun/c1x/ir/LoadIndexed.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 | 37f067e76c6f |
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.cri.ci.*; import com.sun.cri.ri.*; /** * The {@code LoadIndexed} instruction represents a read from an element of an array. */ public final class LoadIndexed extends AccessIndexed { private static final int INPUT_COUNT = 0; private static final int SUCCESSOR_COUNT = 0; /** * Creates a new LoadIndexed instruction. * @param array the instruction producing the array * @param index the instruction producing the index * @param length the instruction producing the length * @param elementType the element type * @param stateAfter the after before executing this instruction * @param graph */ public LoadIndexed(Value array, Value index, Value length, CiKind elementType, Graph graph) { super(elementType.stackKind(), array, index, length, elementType, INPUT_COUNT, SUCCESSOR_COUNT, graph); } /** * Gets the declared type of this instruction's result. * @return the declared type */ @Override public RiType declaredType() { RiType arrayType = array().declaredType(); if (arrayType == null) { return null; } return arrayType.componentType(); } /** * Gets the exact type of this instruction's result. * @return the exact type */ @Override public RiType exactType() { RiType declared = declaredType(); return declared != null && declared.isResolved() ? declared.exactType() : null; } @Override public void accept(ValueVisitor v) { v.visitLoadIndexed(this); } @Override public void print(LogStream out) { out.print(array()).print('[').print(index()).print("] (").print(kind.typeChar).print(')'); } @Override public boolean needsStateAfter() { return false; } }