1 /* 2 * Copyright (c) 2016, 2017, 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_32; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1; 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.NodeView; 33 import org.graalvm.compiler.nodes.ValueNode; 34 import org.graalvm.compiler.nodes.spi.Lowerable; 35 import org.graalvm.compiler.nodes.spi.LoweringTool; 36 37 @NodeInfo(cycles = CYCLES_32, size = SIZE_1) 38 public abstract class IntegerDivRemNode extends FixedBinaryNode implements Lowerable { 39 40 public static final NodeClass<IntegerDivRemNode> TYPE = NodeClass.create(IntegerDivRemNode.class); 41 42 public enum Op { 43 DIV, 44 REM 45 } 46 47 public enum Type { 48 SIGNED, 49 UNSIGNED 50 } 51 52 private final Op op; 53 private final Type type; 54 private final boolean canDeopt; 55 56 protected IntegerDivRemNode(NodeClass<? extends IntegerDivRemNode> c, Stamp stamp, Op op, Type type, ValueNode x, ValueNode y) { 57 super(c, stamp, x, y); 58 this.op = op; 59 this.type = type; 60 61 // Assigning canDeopt during constructor, because it must never change during lifetime of 62 // the node. 63 this.canDeopt = ((IntegerStamp) getY().stamp(NodeView.DEFAULT)).contains(0); 64 } 65 66 public final Op getOp() { 67 return op; 68 } 69 70 public final Type getType() { 71 return type; 72 } 73 74 @Override 75 public void lower(LoweringTool tool) { 76 tool.getLowerer().lower(this, tool); 77 } 78 79 @Override 80 public boolean canDeoptimize() { 81 return canDeopt; 82 } 83 }