Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/WriteNode.java @ 6406:33dab7b4b006
Add snippet factory methods
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Fri, 14 Sep 2012 14:10:36 -0700 |
parents | 01d274503562 |
children | fb66841a0994 |
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/* * Copyright (c) 2011, 2012, 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.oracle.graal.nodes.extended; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * Writes a given {@linkplain #value() value} a {@linkplain AccessNode memory location}. */ public final class WriteNode extends AccessNode implements StateSplit, LIRLowerable, Simplifiable { @Input private ValueNode value; @Input(notDataflow = true) private FrameState stateAfter; public FrameState stateAfter() { return stateAfter; } public void setStateAfter(FrameState x) { assert x == null || x.isAlive() : "frame state must be in a graph"; updateUsages(stateAfter, x); stateAfter = x; } public boolean hasSideEffect() { return true; } public ValueNode value() { return value; } public WriteNode(ValueNode object, ValueNode value, ValueNode location) { super(object, location, StampFactory.forVoid()); this.value = value; } @Override public void generate(LIRGeneratorTool gen) { gen.emitStore(gen.makeAddress(location(), object()), gen.operand(value()), getNullCheck()); } @Override public void simplify(SimplifierTool tool) { if (object().isConstant() && object().asConstant().isNull()) { FixedNode successor = next(); tool.deleteBranch(successor); if (isAlive()) { replaceAtPredecessor(graph().add(new DeoptimizeNode(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.NullCheckException))); safeDelete(); } } } @SuppressWarnings("unused") @NodeIntrinsic public static void writeMemory(Object object, Object value, Object location) { throw new UnsupportedOperationException(); } }