Mercurial > hg > truffle
view graal/GraalCompiler/src/com/sun/c1x/ir/StoreIndexed.java @ 2509:16b9a8b5ad39
Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:50:44 +0200 |
parents | graal/Compiler/src/com/sun/c1x/ir/StoreIndexed.java@9ec15d6914ca |
children | fa3bda50cbfd |
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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 static com.sun.c1x.ir.Value.Flag.*; import com.sun.c1x.debug.*; import com.sun.c1x.value.*; import com.sun.cri.ci.*; /** * The {@code StoreIndexed} instruction represents a write to an array element. * * @author Ben L. Titzer */ public final class StoreIndexed extends AccessIndexed { /** * The value to store. */ Value value; /** * Creates a new StoreIndexed 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 value the value to store into the array * @param stateBefore the state before executing this instruction */ public StoreIndexed(Value array, Value index, Value length, CiKind elementType, Value value, FrameState stateBefore) { super(CiKind.Void, array, index, length, elementType, stateBefore); this.value = value; setFlag(Flag.LiveStore); if (elementType != CiKind.Object) { setFlag(Flag.NoWriteBarrier); } } /** * Gets the instruction that produces the value that is to be stored into the array. * @return the value to write into the array */ public Value value() { return value; } /** * Checks if this instruction needs a write barrier. * @return {@code true} if this instruction needs a write barrier */ public boolean needsWriteBarrier() { return !checkFlag(Flag.NoWriteBarrier); } /** * Checks if this instruction needs a store check. * @return {@code true} if this instruction needs a store check */ public boolean needsStoreCheck() { return !checkFlag(Flag.NoStoreCheck); } public void eliminateStoreCheck() { clearRuntimeCheck(NoStoreCheck); } /** * Checks whether this instruction can cause a trap. * @return {@code true} if this instruction can cause a trap */ @Override public boolean canTrap() { return super.canTrap() || needsStoreCheck(); } @Override public void inputValuesDo(ValueClosure closure) { super.inputValuesDo(closure); value = closure.apply(value); } @Override public void accept(ValueVisitor v) { v.visitStoreIndexed(this); } @Override public void print(LogStream out) { out.print(array()).print('[').print(index()).print("] := ").print(value()).print(" (").print(kind.typeChar).print(')'); } }