1 /*
   2  * Copyright (c) 2015, 2015, 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.asm.sparc.SPARCAssembler;
  29 import org.graalvm.compiler.core.common.LIRKind;
  30 import org.graalvm.compiler.graph.NodeClass;
  31 import org.graalvm.compiler.lir.sparc.SPARCImmediateAddressValue;
  32 import org.graalvm.compiler.nodeinfo.NodeInfo;
  33 import org.graalvm.compiler.nodes.NodeView;
  34 import org.graalvm.compiler.nodes.ValueNode;
  35 import org.graalvm.compiler.nodes.memory.address.AddressNode;
  36 import org.graalvm.compiler.nodes.spi.LIRLowerable;
  37 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
  38 
  39 import jdk.vm.ci.meta.AllocatableValue;
  40 
  41 /**
  42  * Represents an address of the form [base + simm13].
  43  */
  44 @NodeInfo
  45 public class SPARCImmediateAddressNode extends AddressNode implements LIRLowerable {
  46 
  47     public static final NodeClass<SPARCImmediateAddressNode> TYPE = NodeClass.create(SPARCImmediateAddressNode.class);
  48 
  49     @Input private ValueNode base;
  50     private int displacement;
  51 
  52     public SPARCImmediateAddressNode(ValueNode base, int displacement) {
  53         super(TYPE);
  54         assert SPARCAssembler.isSimm13(displacement);
  55         this.base = base;
  56         this.displacement = displacement;
  57     }
  58 
  59     @Override
  60     public void generate(NodeLIRBuilderTool gen) {
  61         SPARCLIRGenerator tool = (SPARCLIRGenerator) gen.getLIRGeneratorTool();
  62 
  63         AllocatableValue baseValue = tool.asAllocatable(gen.operand(base));
  64 
  65         LIRKind kind = tool.getLIRKind(stamp(NodeView.DEFAULT));
  66         AllocatableValue baseReference = LIRKind.derivedBaseFromValue(baseValue);
  67         if (baseReference != null) {
  68             kind = kind.makeDerivedReference(baseReference);
  69         }
  70 
  71         gen.setResult(this, new SPARCImmediateAddressValue(kind, baseValue, displacement));
  72     }
  73 
  74     @Override
  75     public ValueNode getBase() {
  76         return base;
  77     }
  78 
  79     @Override
  80     public long getMaxConstantDisplacement() {
  81         return displacement;
  82     }
  83 
  84     @Override
  85     public ValueNode getIndex() {
  86         return null;
  87     }
  88 }