Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.lir/src/com/oracle/graal/lir/alloc/trace/TraceTrivialAllocator.java @ 22388:8a8725deea6c
Add TraceTrivialAllocator.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Tue, 28 Jul 2015 19:59:47 +0200 |
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/* * Copyright (c) 2015, 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 com.oracle.graal.lir.alloc.trace; import static com.oracle.graal.lir.LIRValueUtil.*; import static com.oracle.graal.lir.alloc.trace.TraceRegisterAllocationPhase.*; import java.util.*; import jdk.internal.jvmci.code.*; import jdk.internal.jvmci.meta.*; import com.oracle.graal.compiler.common.alloc.*; import com.oracle.graal.compiler.common.alloc.TraceBuilder.TraceBuilderResult; import com.oracle.graal.compiler.common.cfg.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.StandardOp.BlockEndOp; import com.oracle.graal.lir.StandardOp.LabelOp; import com.oracle.graal.lir.gen.*; import com.oracle.graal.lir.gen.LIRGeneratorTool.SpillMoveFactory; import com.oracle.graal.lir.phases.*; import com.oracle.graal.lir.ssi.*; import com.oracle.graal.lir.util.*; /** * Allocates a trivial trace i.e. a trace consisting of a single block with no instructions other * than the {@link LabelOp} and the {@link BlockEndOp}. */ public class TraceTrivialAllocator extends AllocationPhase { private final TraceBuilderResult<?> resultTraces; public TraceTrivialAllocator(TraceBuilderResult<?> resultTraces) { this.resultTraces = resultTraces; } @Override protected <B extends AbstractBlockBase<B>> void run(TargetDescription target, LIRGenerationResult lirGenRes, List<B> codeEmittingOrder, List<B> trace, SpillMoveFactory spillMoveFactory, RegisterAllocationConfig registerAllocationConfig) { LIR lir = lirGenRes.getLIR(); assert isTrivialTrace(lir, trace) : "Not a trivial trace! " + trace; B block = trace.iterator().next(); AbstractBlockBase<?> pred = TraceUtil.getBestTraceInterPredecessor(resultTraces, block); VariableVirtualStackValueMap<Variable, Value> variableMap = new VariableVirtualStackValueMap<>(lir.nextVariable(), 0); SSIUtil.forEachValuePair(lir, block, pred, (to, from) -> { if (isVariable(to)) { variableMap.put(asVariable(to), from); } }); ValueProcedure outputConsumer = (value, mode, flags) -> { if (isVariable(value)) { return variableMap.get(asVariable(value)); } return value; }; List<LIRInstruction> instructions = lir.getLIRforBlock(block); for (LIRInstruction op : instructions) { op.forEachOutput(outputConsumer); op.forEachTemp(outputConsumer); op.forEachAlive(outputConsumer); op.forEachInput(outputConsumer); op.forEachState(outputConsumer); } } }