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.spi; 24 25 import org.graalvm.compiler.graph.Node; 26 import org.graalvm.compiler.nodeinfo.NodeCycles; 27 import org.graalvm.compiler.nodeinfo.NodeInfo; 28 import org.graalvm.compiler.nodeinfo.NodeSize; 29 30 /** 31 * A provider that enables overriding and customization of the {@link NodeCycles} and 32 * {@link NodeSize} values for a {@linkplain Node node}. 33 */ 34 public interface NodeCostProvider { 35 36 /** 37 * Gets the estimated size of machine code generated for {@code n}. 38 */ 39 int getEstimatedCodeSize(Node n); 40 41 /** 42 * Gets the estimated execution cost for {@code n} in terms of CPU cycles. 43 */ 44 int getEstimatedCPUCycles(Node n); 45 46 /** 47 * @see NodeInfo#size() 48 */ 49 NodeSize size(Node n); 50 51 /** 52 * @see NodeInfo#cycles() 53 */ 54 NodeCycles cycles(Node n); 55 56 }