| /* |
| * Copyright (c) 2016, 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 org.graalvm.compiler.lir.ssi; |
| |
| import java.util.BitSet; |
| |
| import org.graalvm.compiler.core.common.cfg.AbstractBlockBase; |
| import org.graalvm.compiler.lir.alloc.lsra.LinearScanLifetimeAnalysisPhase; |
| import org.graalvm.compiler.lir.gen.LIRGenerationResult; |
| import org.graalvm.compiler.lir.phases.AllocationPhase; |
| import org.graalvm.compiler.lir.ssa.SSAUtil; |
| import org.graalvm.compiler.options.Option; |
| import org.graalvm.compiler.options.OptionType; |
| import org.graalvm.compiler.options.StableOptionValue; |
| |
| import jdk.vm.ci.code.TargetDescription; |
| import jdk.vm.ci.common.JVMCIError; |
| |
| /** |
| * Constructs {@linkplain SSIUtil SSI LIR} using a liveness analysis. |
| * |
| * Implementation derived from {@link LinearScanLifetimeAnalysisPhase}. |
| * |
| * @see SSIUtil |
| */ |
| public final class SSIConstructionPhase extends AllocationPhase { |
| |
| static class Options { |
| |
| //@formatter:off |
| @Option(help = "Use fast SSI builder.", type = OptionType.Debug) |
| public static final StableOptionValue<Boolean> TraceRAFastSSIBuilder = new StableOptionValue<>(true); |
| //@formatter:on |
| } |
| |
| @Override |
| protected void run(TargetDescription target, LIRGenerationResult lirGenRes, AllocationContext context) { |
| assert SSAUtil.verifySSAForm(lirGenRes.getLIR()); |
| if (Options.TraceRAFastSSIBuilder.getValue()) { |
| FastSSIBuilder fastSSIBuilder = new FastSSIBuilder(lirGenRes.getLIR()); |
| fastSSIBuilder.build(); |
| fastSSIBuilder.finish(); |
| } else { |
| SSIBuilder ssiBuilder = new SSIBuilder(lirGenRes.getLIR()); |
| ssiBuilder.build(); |
| ssiBuilder.finish(); |
| } |
| } |
| |
| static void check(AbstractBlockBase<?>[] blocks, SSIBuilderBase liveSets1, SSIBuilderBase liveSets2) { |
| for (AbstractBlockBase<?> block : blocks) { |
| check(block, liveSets1.getLiveIn(block), liveSets2.getLiveIn(block)); |
| check(block, liveSets1.getLiveOut(block), liveSets2.getLiveOut(block)); |
| } |
| } |
| |
| private static void check(AbstractBlockBase<?> block, BitSet liveIn1, BitSet liveIn2) { |
| if (!liveIn1.equals(liveIn2)) { |
| throw JVMCIError.shouldNotReachHere(String.format("%s LiveSet differ: %s vs %s", block, liveIn1, liveIn2)); |
| } |
| } |
| } |