| /* |
| * Copyright (c) 2015, 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 org.graalvm.compiler.hotspot; |
| |
| import java.util.List; |
| |
| import org.graalvm.compiler.asm.Assembler; |
| import org.graalvm.compiler.asm.Assembler.InstructionCounter; |
| import org.graalvm.compiler.core.common.LIRKind; |
| import org.graalvm.compiler.core.common.cfg.AbstractBlockBase; |
| import org.graalvm.compiler.lir.ConstantValue; |
| import org.graalvm.compiler.lir.LIR; |
| import org.graalvm.compiler.lir.LIRInsertionBuffer; |
| import org.graalvm.compiler.lir.LIRInstruction; |
| import org.graalvm.compiler.lir.LIRInstructionClass; |
| import org.graalvm.compiler.lir.StandardOp.BlockEndOp; |
| import org.graalvm.compiler.lir.StandardOp.LabelOp; |
| import org.graalvm.compiler.lir.asm.CompilationResultBuilder; |
| import org.graalvm.compiler.lir.gen.DiagnosticLIRGeneratorTool; |
| import org.graalvm.compiler.lir.gen.LIRGenerationResult; |
| import org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase; |
| |
| import jdk.vm.ci.code.TargetDescription; |
| import jdk.vm.ci.meta.JavaConstant; |
| import jdk.vm.ci.meta.JavaKind; |
| import jdk.vm.ci.meta.Value; |
| |
| public class HotSpotInstructionProfiling extends PostAllocationOptimizationPhase { |
| public static final String COUNTER_GROUP = "INSTRUCTION_COUNTER"; |
| private final String[] instructionsToProfile; |
| |
| public HotSpotInstructionProfiling(String instructionsToProfile) { |
| this.instructionsToProfile = instructionsToProfile.split(","); |
| } |
| |
| @Override |
| protected void run(TargetDescription target, LIRGenerationResult lirGenRes, PostAllocationOptimizationContext context) { |
| new Analyzer(target, lirGenRes.getCompilationUnitName(), lirGenRes.getLIR(), context.diagnosticLirGenTool).run(); |
| } |
| |
| private class Analyzer { |
| private final TargetDescription target; |
| private final LIR lir; |
| private final DiagnosticLIRGeneratorTool diagnosticLirGenTool; |
| private final LIRInsertionBuffer buffer; |
| private final String compilationUnitName; |
| |
| Analyzer(TargetDescription target, String compilationUnitName, LIR lir, DiagnosticLIRGeneratorTool diagnosticLirGenTool) { |
| this.target = target; |
| this.lir = lir; |
| this.compilationUnitName = compilationUnitName; |
| this.diagnosticLirGenTool = diagnosticLirGenTool; |
| this.buffer = new LIRInsertionBuffer(); |
| } |
| |
| public void run() { |
| for (AbstractBlockBase<?> block : lir.getControlFlowGraph().getBlocks()) { |
| doBlock(block); |
| } |
| } |
| |
| public void doBlock(AbstractBlockBase<?> block) { |
| List<LIRInstruction> instructions = lir.getLIRforBlock(block); |
| assert instructions.size() >= 2 : "Malformed block: " + block + ", " + instructions; |
| assert instructions.get(instructions.size() - 1) instanceof BlockEndOp : "Not a BlockEndOp: " + instructions.get(instructions.size() - 1); |
| assert !(instructions.get(instructions.size() - 2) instanceof BlockEndOp) : "Is a BlockEndOp: " + instructions.get(instructions.size() - 2); |
| assert instructions.get(0) instanceof LabelOp : "Not a LabelOp: " + instructions.get(0); |
| assert !(instructions.get(1) instanceof LabelOp) : "Is a LabelOp: " + instructions.get(1); |
| String[] names = new String[instructionsToProfile.length]; |
| String[] groups = new String[instructionsToProfile.length]; |
| Value[] increments = new Value[instructionsToProfile.length]; |
| for (int i = 0; i < instructionsToProfile.length; i++) { |
| names[i] = compilationUnitName; |
| groups[i] = COUNTER_GROUP + " " + instructionsToProfile[i]; |
| // Default is zero; this value is patched to the real instruction count after |
| // assembly in method HotSpotInstructionProfiling.countInstructions |
| increments[i] = new ConstantValue(LIRKind.fromJavaKind(target.arch, JavaKind.Int), JavaConstant.INT_0); |
| } |
| HotSpotCounterOp op = (HotSpotCounterOp) diagnosticLirGenTool.createMultiBenchmarkCounter(names, groups, increments); |
| LIRInstruction inst = new InstructionCounterOp(op, instructionsToProfile); |
| assert inst != null; |
| buffer.init(instructions); |
| buffer.append(1, inst); |
| buffer.finish(); |
| } |
| } |
| |
| /** |
| * After assembly the {@link HotSpotBackend#profileInstructions(LIR, CompilationResultBuilder)} |
| * calls this method for patching the instruction counts into the counter increment code. |
| */ |
| public static void countInstructions(LIR lir, Assembler asm) { |
| InstructionCounterOp lastOp = null; |
| InstructionCounter counter = asm.getInstructionCounter(); |
| for (AbstractBlockBase<?> block : lir.codeEmittingOrder()) { |
| if (block == null) { |
| continue; |
| } |
| for (LIRInstruction inst : lir.getLIRforBlock(block)) { |
| if (inst instanceof InstructionCounterOp) { |
| InstructionCounterOp currentOp = (InstructionCounterOp) inst; |
| |
| if (lastOp != null) { |
| int beginPc = lastOp.countOffsetEnd; |
| int endPc = currentOp.countOffsetBegin; |
| int[] instructionCounts = counter.countInstructions(lastOp.instructionsToProfile, beginPc, endPc); |
| lastOp.delegate.patchCounterIncrement(asm, instructionCounts); |
| } |
| lastOp = ((InstructionCounterOp) inst); |
| } |
| } |
| } |
| if (lastOp != null) { |
| assert lastOp.countOffsetBegin < asm.position(); |
| int beginPc = lastOp.countOffsetBegin; |
| int endPc = asm.position(); |
| int[] instructionCounts = counter.countInstructions(lastOp.instructionsToProfile, beginPc, endPc); |
| lastOp.delegate.patchCounterIncrement(asm, instructionCounts); |
| } |
| } |
| |
| public static class InstructionCounterOp extends LIRInstruction { |
| public static final LIRInstructionClass<InstructionCounterOp> TYPE = LIRInstructionClass.create(InstructionCounterOp.class); |
| private final HotSpotCounterOp delegate; |
| private final String[] instructionsToProfile; |
| private int countOffsetBegin; |
| private int countOffsetEnd; |
| |
| public InstructionCounterOp(HotSpotCounterOp delegate, String[] instructionsToProfile) { |
| super(TYPE); |
| this.delegate = delegate; |
| this.instructionsToProfile = instructionsToProfile; |
| } |
| |
| @Override |
| public void emitCode(CompilationResultBuilder crb) { |
| countOffsetBegin = crb.asm.position(); |
| this.delegate.emitCode(crb); |
| countOffsetEnd = crb.asm.position(); |
| } |
| |
| public String[] getInstructionsToProfile() { |
| return instructionsToProfile; |
| } |
| } |
| } |