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 */ 23 package org.graalvm.compiler.lir.debug; 24 25 import org.graalvm.compiler.debug.Debug; 26 import org.graalvm.compiler.lir.LIR; 27 28 import jdk.vm.ci.meta.Value; 29 30 /** 31 * Provides information about {@link LIR} generation for debugging purposes. 32 */ 33 public interface LIRGenerationDebugContext { 34 35 /** 36 * Gets an object that represents the source of an {@link LIR} {@link Value operand} in a higher 37 * representation. 38 */ 39 Object getSourceForOperand(Value value); 40 41 static LIRGenerationDebugContext getFromDebugContext() { 42 if (Debug.isEnabled()) { 43 LIRGenerationDebugContext lirGen = Debug.contextLookup(LIRGenerationDebugContext.class); 44 assert lirGen != null; 45 return lirGen; 46 } 47 return null; 48 } 49 50 static Object getSourceForOperandFromDebugContext(Value value) { 51 LIRGenerationDebugContext gen = getFromDebugContext(); 52 if (gen != null) { 53 return gen.getSourceForOperand(value); 54 } 55 return null; 56 } 57 58 }