1 /*
   2  * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 
  26 package org.graalvm.compiler.core.sparc;
  27 
  28 import org.graalvm.compiler.core.common.LIRKind;
  29 import org.graalvm.compiler.graph.NodeClass;
  30 import org.graalvm.compiler.lir.sparc.SPARCIndexedAddressValue;
  31 import org.graalvm.compiler.nodeinfo.NodeInfo;
  32 import org.graalvm.compiler.nodes.NodeView;
  33 import org.graalvm.compiler.nodes.ValueNode;
  34 import org.graalvm.compiler.nodes.memory.address.AddressNode;
  35 import org.graalvm.compiler.nodes.spi.LIRLowerable;
  36 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
  37 
  38 import jdk.vm.ci.meta.AllocatableValue;
  39 
  40 /**
  41  * Represents an address of the form [base + index].
  42  */
  43 @NodeInfo
  44 public class SPARCIndexedAddressNode extends AddressNode implements LIRLowerable {
  45 
  46     public static final NodeClass<SPARCIndexedAddressNode> TYPE = NodeClass.create(SPARCIndexedAddressNode.class);
  47 
  48     @Input private ValueNode base;
  49     @Input private ValueNode index;
  50 
  51     public SPARCIndexedAddressNode(ValueNode base, ValueNode index) {
  52         super(TYPE);
  53         this.base = base;
  54         this.index = index;
  55     }
  56 
  57     @Override
  58     public void generate(NodeLIRBuilderTool gen) {
  59         SPARCLIRGenerator tool = (SPARCLIRGenerator) gen.getLIRGeneratorTool();
  60 
  61         AllocatableValue baseValue = tool.asAllocatable(gen.operand(base));
  62         AllocatableValue indexValue = tool.asAllocatable(gen.operand(index));
  63 
  64         AllocatableValue baseReference = LIRKind.derivedBaseFromValue(baseValue);
  65         AllocatableValue indexReference = LIRKind.derivedBaseFromValue(indexValue);
  66 
  67         LIRKind kind = LIRKind.combineDerived(tool.getLIRKind(stamp(NodeView.DEFAULT)), baseReference, indexReference);
  68         gen.setResult(this, new SPARCIndexedAddressValue(kind, baseValue, indexValue));
  69     }
  70 
  71     @Override
  72     public ValueNode getBase() {
  73         return base;
  74     }
  75 
  76     public void setBase(ValueNode base) {
  77         updateUsages(this.base, base);
  78         this.base = base;
  79     }
  80 
  81     @Override
  82     public ValueNode getIndex() {
  83         return index;
  84     }
  85 
  86     public void setIndex(ValueNode index) {
  87         updateUsages(this.index, index);
  88         this.index = index;
  89     }
  90 
  91     @Override
  92     public long getMaxConstantDisplacement() {
  93         return Long.MAX_VALUE;
  94     }
  95 }