Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/ConstantLocationNode.java @ 9524:ff8d87eabda8
Refactor the LocationNode class hierarchy to allow a SnippetLocationNode, i.e., a LocationNode that can be used in snippets without requiring the individual components to be constants at the time the snippet is prepared
author | Christian Wimmer <christian.wimmer@oracle.com> |
---|---|
date | Thu, 02 May 2013 10:36:09 -0700 |
parents | 9ee5f3bfa755 |
children | 038fa65cbd8d |
line wrap: on
line source
/* * 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.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * Location node that has a constant displacement. Can represent addresses of the form [base + disp] * where base is a node and disp is a constant. */ @NodeInfo(nameTemplate = "Loc {p#locationIdentity/s}") public final class ConstantLocationNode extends LocationNode { private final Kind valueKind; private final Object locationIdentity; private final long displacement; public static ConstantLocationNode create(Object identity, Kind kind, long displacement, Graph graph) { return graph.unique(new ConstantLocationNode(identity, kind, displacement)); } private ConstantLocationNode(Object identity, Kind kind, long displacement) { super(StampFactory.extension()); assert kind != Kind.Illegal && kind != Kind.Void; this.valueKind = kind; this.locationIdentity = identity; this.displacement = displacement; } @Override public Kind getValueKind() { return valueKind; } @Override public Object locationIdentity() { return locationIdentity; } public long displacement() { return displacement; } @Override public Value generateAddress(LIRGeneratorTool gen, Value base) { return gen.emitAddress(base, displacement(), Value.ILLEGAL, 0); } }