1 /* 2 * Copyright (c) 2016, 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.profiling; 24 25 import java.util.ArrayList; 26 27 import org.graalvm.compiler.core.common.LIRKind; 28 import org.graalvm.compiler.core.common.cfg.AbstractBlockBase; 29 import org.graalvm.compiler.lir.ConstantValue; 30 import org.graalvm.compiler.lir.LIR; 31 import org.graalvm.compiler.lir.LIRInsertionBuffer; 32 import org.graalvm.compiler.lir.LIRInstruction; 33 import org.graalvm.compiler.lir.StandardOp.BlockEndOp; 34 import org.graalvm.compiler.lir.StandardOp.LabelOp; 35 import org.graalvm.compiler.lir.gen.DiagnosticLIRGeneratorTool; 36 import org.graalvm.compiler.lir.gen.LIRGenerationResult; 37 import org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase; 38 39 import jdk.vm.ci.code.TargetDescription; 40 import jdk.vm.ci.meta.JavaConstant; 41 import jdk.vm.ci.meta.JavaKind; 42 43 public class MethodProfilingPhase extends PostAllocationOptimizationPhase { 44 public static final String INVOCATION_GROUP = "METHOD_INVOCATION_COUNTER"; 45 public static final String ITERATION_GROUP = "METHOD_ITERATION_COUNTER"; 46 47 @Override 48 protected void run(TargetDescription target, LIRGenerationResult lirGenRes, PostAllocationOptimizationContext context) { 49 new Analyzer(target, lirGenRes.getCompilationUnitName(), lirGenRes.getLIR(), context.diagnosticLirGenTool).run(); 50 } 51 52 private class Analyzer { 53 private final LIR lir; 54 private final DiagnosticLIRGeneratorTool diagnosticLirGenTool; 55 private final LIRInsertionBuffer buffer; 56 private final String compilationUnitName; 57 private final ConstantValue increment; 58 59 Analyzer(TargetDescription target, String compilationUnitName, LIR lir, DiagnosticLIRGeneratorTool diagnosticLirGenTool) { 60 this.lir = lir; 61 this.compilationUnitName = compilationUnitName; 62 this.diagnosticLirGenTool = diagnosticLirGenTool; 63 this.buffer = new LIRInsertionBuffer(); 64 this.increment = new ConstantValue(LIRKind.fromJavaKind(target.arch, JavaKind.Int), JavaConstant.INT_1); 65 } 66 67 public void run() { 68 // insert counter at method entry 69 doBlock(lir.getControlFlowGraph().getStartBlock(), INVOCATION_GROUP); 70 for (AbstractBlockBase<?> block : lir.getControlFlowGraph().getBlocks()) { 71 if (block.isLoopHeader()) { 72 // insert counter at loop header 73 doBlock(block, ITERATION_GROUP); 74 } 75 } 76 } 77 78 public void doBlock(AbstractBlockBase<?> block, String group) { 79 ArrayList<LIRInstruction> instructions = lir.getLIRforBlock(block); 80 assert instructions.size() >= 2 : "Malformed block: " + block + ", " + instructions; 81 assert instructions.get(instructions.size() - 1) instanceof BlockEndOp : "Not a BlockEndOp: " + instructions.get(instructions.size() - 1); 82 assert !(instructions.get(instructions.size() - 2) instanceof BlockEndOp) : "Is a BlockEndOp: " + instructions.get(instructions.size() - 2); 83 assert instructions.get(0) instanceof LabelOp : "Not a LabelOp: " + instructions.get(0); 84 assert !(instructions.get(1) instanceof LabelOp) : "Is a LabelOp: " + instructions.get(1); 85 86 LIRInstruction op = diagnosticLirGenTool.createBenchmarkCounter(compilationUnitName, group, increment); 87 buffer.init(instructions); 88 buffer.append(1, op); 89 buffer.finish(); 90 } 91 } 92 93 }