001/*
002 * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.compiler;
024
025import static com.oracle.graal.compiler.common.BackendOptions.*;
026
027import java.util.*;
028
029import jdk.internal.jvmci.code.*;
030
031import com.oracle.graal.compiler.common.cfg.*;
032import com.oracle.graal.graph.*;
033import com.oracle.graal.lir.gen.*;
034import com.oracle.graal.lir.phases.*;
035import com.oracle.graal.lir.ssa.*;
036import com.oracle.graal.nodes.*;
037import com.oracle.graal.nodes.cfg.*;
038import com.oracle.graal.nodes.spi.*;
039import com.oracle.graal.phases.schedule.*;
040
041public class LIRGenerationPhase extends LIRPhase<LIRGenerationPhase.LIRGenerationContext> {
042
043    public static final class LIRGenerationContext {
044        private final NodeLIRBuilderTool nodeLirBuilder;
045        private final LIRGeneratorTool lirGen;
046        private final StructuredGraph graph;
047        private final SchedulePhase schedule;
048
049        public LIRGenerationContext(LIRGeneratorTool lirGen, NodeLIRBuilderTool nodeLirBuilder, StructuredGraph graph, SchedulePhase schedule) {
050            this.nodeLirBuilder = nodeLirBuilder;
051            this.lirGen = lirGen;
052            this.graph = graph;
053            this.schedule = schedule;
054        }
055    }
056
057    @Override
058    protected final <B extends AbstractBlockBase<B>> void run(TargetDescription target, LIRGenerationResult lirGenRes, List<B> codeEmittingOrder, List<B> linearScanOrder,
059                    LIRGenerationPhase.LIRGenerationContext context) {
060        NodeLIRBuilderTool nodeLirBuilder = context.nodeLirBuilder;
061        StructuredGraph graph = context.graph;
062        SchedulePhase schedule = context.schedule;
063        for (B b : linearScanOrder) {
064            emitBlock(nodeLirBuilder, lirGenRes, (Block) b, graph, schedule.getBlockToNodesMap());
065        }
066        context.lirGen.beforeRegisterAllocation();
067        assert !ConstructionSSAlirDuringLirBuilding.getValue() || SSAUtil.verifySSAForm(lirGenRes.getLIR());
068    }
069
070    private static void emitBlock(NodeLIRBuilderTool nodeLirGen, LIRGenerationResult lirGenRes, Block b, StructuredGraph graph, BlockMap<List<Node>> blockMap) {
071        if (lirGenRes.getLIR().getLIRforBlock(b) == null) {
072            for (Block pred : b.getPredecessors()) {
073                if (!b.isLoopHeader() || !pred.isLoopEnd()) {
074                    emitBlock(nodeLirGen, lirGenRes, pred, graph, blockMap);
075                }
076            }
077            nodeLirGen.doBlock(b, graph, blockMap);
078        }
079    }
080
081}