1 /*
   2  * Copyright (c) 2016, 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 package org.graalvm.compiler.nodes.calc;
  24 
  25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_40;
  26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_2;
  27 
  28 import org.graalvm.compiler.core.common.type.IntegerStamp;
  29 import org.graalvm.compiler.core.common.type.Stamp;
  30 import org.graalvm.compiler.graph.NodeClass;
  31 import org.graalvm.compiler.nodeinfo.NodeInfo;
  32 import org.graalvm.compiler.nodes.ValueNode;
  33 import org.graalvm.compiler.nodes.spi.Lowerable;
  34 import org.graalvm.compiler.nodes.spi.LoweringTool;
  35 
  36 @NodeInfo(cycles = CYCLES_40, size = SIZE_2)
  37 public abstract class IntegerDivRemNode extends FixedBinaryNode implements Lowerable {
  38 
  39     public static final NodeClass<IntegerDivRemNode> TYPE = NodeClass.create(IntegerDivRemNode.class);
  40 
  41     public enum Op {
  42         DIV,
  43         REM
  44     }
  45 
  46     public enum Type {
  47         SIGNED,
  48         UNSIGNED
  49     }
  50 
  51     private final Op op;
  52     private final Type type;
  53 
  54     protected IntegerDivRemNode(NodeClass<? extends IntegerDivRemNode> c, Stamp stamp, Op op, Type type, ValueNode x, ValueNode y) {
  55         super(c, stamp, x, y);
  56         this.op = op;
  57         this.type = type;
  58     }
  59 
  60     public final Op getOp() {
  61         return op;
  62     }
  63 
  64     public final Type getType() {
  65         return type;
  66     }
  67 
  68     @Override
  69     public void lower(LoweringTool tool) {
  70         tool.getLowerer().lower(this, tool);
  71     }
  72 
  73     @Override
  74     public boolean canDeoptimize() {
  75         return !(getY().stamp() instanceof IntegerStamp) || ((IntegerStamp) getY().stamp()).contains(0);
  76     }
  77 }