1/* 2 * Copyright (c) 2015, 2015, 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 */ 23package org.graalvm.compiler.lir.alloc; 24 25import static org.graalvm.compiler.core.common.GraalOptions.RegisterPressure; 26import static org.graalvm.compiler.core.common.alloc.RegisterAllocationConfig.ALL_REGISTERS; 27 28import org.graalvm.compiler.lir.BailoutAndRestartBackendException; 29import org.graalvm.compiler.lir.phases.LIRSuites; 30import org.graalvm.compiler.options.OptionValue; 31import org.graalvm.compiler.options.OptionValue.OverrideScope; 32 33/** 34 * Thrown if the register allocator runs out of registers. This should never happen in normal mode. 35 */ 36public final class OutOfRegistersException extends BailoutAndRestartBackendException { 37 38 private static final long serialVersionUID = -3479786650143432195L; 39 40 private final String description; 41 42 public OutOfRegistersException(String msg) { 43 super(msg); 44 this.description = ""; 45 } 46 47 public OutOfRegistersException(Throwable cause, String msg) { 48 super(cause, msg); 49 this.description = ""; 50 } 51 52 public OutOfRegistersException(String msg, String description) { 53 super(msg); 54 this.description = description; 55 } 56 57 public OutOfRegistersException(Throwable cause, String msg, String description) { 58 super(cause, msg); 59 this.description = description; 60 } 61 62 public String getDescription() { 63 return description; 64 } 65 66 @Override 67 public boolean shouldRestart() { 68 return RegisterPressure.getValue() != null && !RegisterPressure.getValue().equals(ALL_REGISTERS); 69 } 70 71 @Override 72 public OverrideScope getOverrideScope() { 73 return OptionValue.override(RegisterPressure, ALL_REGISTERS); 74 } 75 76 @Override 77 public LIRSuites updateLIRSuites(LIRSuites lirSuites) { 78 return lirSuites; 79 } 80} 81