Mercurial > hg > graal-compiler
view graal/com.oracle.graal.lir/src/com/oracle/graal/lir/BailoutAndRestartBackendException.java @ 23375:0fdbe9bbb647
GraalCompiler: add BailoutAndRestartBackendException and update OutOfRegistersException.
author | Josef Eisl <josef.eisl@jku.at> |
---|---|
date | Wed, 03 Feb 2016 11:03:55 +0100 |
parents | |
children |
line wrap: on
line source
/* * 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 com.oracle.graal.lir; import jdk.vm.ci.code.BailoutException; import com.oracle.graal.lir.phases.LIRSuites; import com.oracle.graal.options.Option; import com.oracle.graal.options.OptionType; import com.oracle.graal.options.OptionValue; import com.oracle.graal.options.OptionValue.OverrideScope; import com.oracle.graal.options.StableOptionValue; /** * Restarts the {@link LIR low-level} compilation with a modified configuration. * {@link BailoutAndRestartBackendException.Options#LIRUnlockBackendRestart LIRUnlockBackendRestart} * needs to be enabled. Use only for debugging purposes only. */ public abstract class BailoutAndRestartBackendException extends BailoutException { public static class Options { // @formatter:off @Option(help = "Unlock backend restart feature.", type = OptionType.Debug) public static final StableOptionValue<Boolean> LIRUnlockBackendRestart = new StableOptionValue<>(false); // @formatter:on } private static final long serialVersionUID = 792969002851591180L; public BailoutAndRestartBackendException(String msg) { super(msg); } public BailoutAndRestartBackendException(Throwable cause, String msg) { super(cause, msg); } public BailoutAndRestartBackendException(boolean permanent, String msg) { super(permanent, msg); } /** Returns {@code true} if the low-level compilation should be restarted. */ public abstract boolean shouldRestart(); /** * Returns an {@link OverrideScope} to change {@link OptionValue OptionValues} or {@code null} * if no changes are required. */ public abstract OverrideScope getOverrideScope(); /** * Updates the {@link LIRSuites} used by the low-level compiler. Note that {@link LIRSuites} are * usually shared, so a modified input parameter will affect other compilations. In case only * the current compilation should be altered, create a copy using {@link LIRSuites#copy()}. */ public abstract LIRSuites updateLIRSuites(LIRSuites lirSuites); }