Mercurial > hg > graal-compiler
diff graal/com.oracle.max.cri/src/com/sun/cri/ri/RiTypeProfile.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
parents | |
children | bc8527f3071c |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.max.cri/src/com/sun/cri/ri/RiTypeProfile.java Sat Dec 17 19:59:18 2011 +0100 @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2011, 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 com.sun.cri.ri; + +import java.io.*; + +/** + * This profile object represents the type profile of one call site, cast or instanceof instruction. The precision of + * the supplied values may vary, but a runtime that provides this information should be aware that it will be used to + * guide performance-critical decisions like speculative inlining, etc. + */ +public class RiTypeProfile implements Serializable { + + /** + * How often the instruction was executed, which may be used to judge the maturity of this profile. + */ + public int count; + + /** + * An estimation of how many different receiver types were encountered. This may or may not be the same as + * probabilities.length/types.length, as the runtime may store probabilities for a limited number of receivers. + */ + public int morphism; + + /** + * A list of receivers for which the runtime has recorded probability information. This array needs to have the same + * length as {@link RiTypeProfile#probabilities}. + */ + public RiResolvedType[] types; + + /** + * The estimated probabilities of the different receivers. This array needs to have the same length as + * {@link RiTypeProfile#types}. + */ + public float[] probabilities; +}