--- /dev/null 2016-05-31 09:42:47.975716356 -0700 +++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.nodeinfo/src/org/graalvm/compiler/nodeinfo/NodeSize.java 2016-12-09 00:54:45.256239752 -0800 @@ -0,0 +1,77 @@ +/* + * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package org.graalvm.compiler.nodeinfo; + +/** + * Constants representing an estimation of of the size needed to represent a compiler node in + * machine code. + */ +public enum NodeSize { + + /** + * The default value of the {@link NodeInfo#size()} property. + *

+ * For further information about the use of {@code SIZE_UNSET} see {@link NodeInfo#size()}. + */ + SIZE_UNSET(0), + /** + * Nodes for which, due to arbitrary reasons, no estimation can be made either (1) statically + * without inspecting the properties of a node or (2) at all (like e.g. for an invocation). + *

+ * Nodes annotated with {@code SIZE_UNKNOWN} should specify the {@link NodeInfo#sizeRationale()} + * property to clarify why an estimation cannot be done. + */ + SIZE_UNKNOWN(0), + /** + * Nodes for which code size information is irrelevant and can be ignored, e.g. for test nodes. + */ + SIZE_IGNORED(0), + /** + * Nodes that do not require any code to be generated in order to be "executed", e.g. a phi + * node. + */ + SIZE_0(0), + SIZE_1(1), + SIZE_2(2), + SIZE_3(3), + SIZE_4(4), + SIZE_6(6), + SIZE_8(8), + SIZE_10(10), + SIZE_15(15), + SIZE_20(20), + SIZE_30(30), + SIZE_40(40), + SIZE_50(50), + SIZE_80(80), + SIZE_100(100), + SIZE_200(200); + + public final int estimatedCodeSize; + + NodeSize(int estimatedCodeSize) { + this.estimatedCodeSize = estimatedCodeSize; + } + + public static final int IGNORE_SIZE_CONTRACT_FACTOR = 0xFFFF; +}