1 /* 2 * Copyright (c) 2011, 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 package org.graalvm.compiler.nodes; 24 25 import static java.lang.Character.toLowerCase; 26 27 import java.util.ArrayList; 28 import java.util.Collection; 29 30 import org.graalvm.compiler.graph.Node; 31 import org.graalvm.compiler.nodeinfo.Verbosity; 32 import org.graalvm.compiler.nodes.memory.MemoryNode; 33 34 import jdk.vm.ci.meta.JavaKind; 35 36 public class ValueNodeUtil { 37 38 public static ValueNode assertKind(JavaKind kind, ValueNode x) { 39 assert x != null && x.getStackKind() == kind : "kind=" + kind + ", value=" + x + ((x == null) ? "" : ", value.kind=" + x.getStackKind()); 40 return x; 41 } 42 43 public static RuntimeException shouldNotReachHere(String msg) { 44 throw new InternalError("should not reach here: " + msg); 45 } 46 47 public static RuntimeException shouldNotReachHere() { 48 throw new InternalError("should not reach here"); 49 } 50 51 public static ValueNode assertLong(ValueNode x) { 52 assert x != null && (x.getStackKind() == JavaKind.Long); 53 return x; 54 } 55 56 public static ValueNode assertInt(ValueNode x) { 57 assert x != null && (x.getStackKind() == JavaKind.Int); 58 return x; 59 } 60 61 public static ValueNode assertFloat(ValueNode x) { 62 assert x != null && (x.getStackKind() == JavaKind.Float); 63 return x; 64 } 65 66 public static ValueNode assertObject(ValueNode x) { 67 assert x != null && (x.getStackKind() == JavaKind.Object); 68 return x; 69 } 70 71 public static ValueNode assertDouble(ValueNode x) { 72 assert x != null && (x.getStackKind() == JavaKind.Double); 73 return x; 74 } 75 76 public static void assertHigh(ValueNode x) { 77 assert x == null; 78 } 79 80 @SuppressWarnings("unchecked") 81 public static <T extends Node> Collection<T> filter(Iterable<Node> nodes, Class<T> clazz) { 82 ArrayList<T> phis = new ArrayList<>(); 83 for (Node node : nodes) { 84 if (clazz.isInstance(node)) { 85 phis.add((T) node); 86 } 87 } 88 return phis; 89 } 90 91 /** 92 * Converts a given instruction to a value string. The representation of an node as a value is 93 * formed by concatenating the {@linkplain jdk.vm.ci.meta.JavaKind#getTypeChar character} 94 * denoting its {@linkplain ValueNode#getStackKind kind} and its id. For example, {@code "i13"}. 95 * 96 * @param value the instruction to convert to a value string. If {@code value == null}, then "-" 97 * is returned. 98 * @return the instruction representation as a string 99 */ 100 public static String valueString(ValueNode value) { 101 return (value == null) ? "-" : ("" + toLowerCase(value.getStackKind().getTypeChar()) + value.toString(Verbosity.Id)); 102 } 103 104 public static ValueNode asNode(MemoryNode node) { 105 if (node == null) { 106 return null; 107 } else { 108 return node.asNode(); 109 } 110 } 111 }