Mercurial > hg > truffle
diff graal/com.oracle.max.cri/src/com/oracle/max/cri/xir/XirSite.java @ 4199:aaac4894175c
Renamed cri packages from sun to oracle.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
---|---|
date | Tue, 03 Jan 2012 16:29:28 +0100 |
parents | graal/com.oracle.max.cri/src/com/sun/cri/xir/XirSite.java@e233f5660da4 |
children | 985fbd8adf65 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.max.cri/src/com/oracle/max/cri/xir/XirSite.java Tue Jan 03 16:29:28 2012 +0100 @@ -0,0 +1,94 @@ +/* + * Copyright (c) 2009, 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.oracle.max.cri.xir; + +import com.oracle.max.cri.ci.*; +import com.oracle.max.cri.ri.*; + +/** + * Encapsulates the notion of a site where XIR can be supplied. It is supplied to the {@link RiXirGenerator} by the + * compiler for each place where XIR can be generated. This interface allows a number of queries, including the + * bytecode-level location and optimization hints computed by the compiler. + */ +public interface XirSite { + + /** + * Gets the {@link CiCodePos code position} associated with this site. This is useful for inserting + * instrumentation at the XIR level. + * @return the code position if it is available; {@code null} otherwise + */ + CiCodePos getCodePos(); + + /** + * Checks whether the specified argument is guaranteed to be non-null at this site. + * @param argument the argument + * @return {@code true} if the argument is non null at this site + */ + boolean isNonNull(XirArgument argument); + + /** + * Checks whether this site requires a null check. + * @return {@code true} if a null check is required + */ + boolean requiresNullCheck(); + + /** + * Checks whether this site requires a range check. + * @return {@code true} if a range check is required + */ + boolean requiresBoundsCheck(); + + /** + * Checks whether this site requires a read barrier. + * @return {@code true} if a read barrier is required + */ + boolean requiresReadBarrier(); + + /** + * Checks whether this site requires a write barrier. + * @return {@code true} if a write barrier is required + */ + boolean requiresWriteBarrier(); + + /** + * Checks whether this site requires an array store check. + * @return {@code true} if an array store check is required + */ + boolean requiresArrayStoreCheck(); + + /** + * Checks whether an approximation of the type for the specified argument is available. + * @param argument the argument + * @return an {@link RiType} indicating the most specific type known for the argument, if any; + * {@code null} if no particular type is known + */ + RiType getApproximateType(XirArgument argument); + + /** + * Checks whether an exact type is known for the specified argument. + * @param argument the argument + * @return an {@link RiType} indicating the exact type known for the argument, if any; + * {@code null} if no particular type is known + */ + RiType getExactType(XirArgument argument); +}