1 /* 2 * Copyright (c) 2018, 2019, 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 package org.graalvm.compiler.nodes.util; 26 27 import org.graalvm.compiler.core.common.type.IntegerStamp; 28 import org.graalvm.compiler.nodes.LogicNode; 29 import org.graalvm.compiler.nodes.NodeView; 30 import org.graalvm.compiler.nodes.ValueNode; 31 32 public abstract class IntegerHelper { 33 protected final int bits; 34 35 protected IntegerHelper(int bits) { 36 this.bits = bits; 37 } 38 39 public abstract long upperBound(IntegerStamp stamp); 40 41 public abstract long lowerBound(IntegerStamp stamp); 42 43 public int compare(long a, long b) { 44 return rawCompare(cast(a), cast(b)); 45 } 46 47 public boolean isGreater(long a, long b) { 48 return compare(a, b) > 0; 49 } 50 51 public boolean isSmaller(long a, long b) { 52 return compare(a, b) < 0; 53 } 54 55 public boolean isGreaterEqual(long a, long b) { 56 return compare(a, b) >= 0; 57 } 58 59 public boolean isSmallerEqual(long a, long b) { 60 return compare(a, b) <= 0; 61 } 62 63 public long min(long a, long b) { 64 return rawMin(cast(a), cast(b)); 65 } 66 67 public long max(long a, long b) { 68 return rawMax(cast(a), cast(b)); 69 } 70 71 public abstract long cast(long a); 72 73 public abstract long minValue(); 74 75 public abstract long maxValue(); 76 77 public abstract IntegerStamp stamp(long min, long max); 78 79 public abstract LogicNode createCompareNode(ValueNode x, ValueNode y, NodeView view); 80 81 protected abstract int rawCompare(long a, long b); 82 83 protected abstract long rawMin(long a, long b); 84 85 protected abstract long rawMax(long a, long b); 86 }