Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/Stub.java @ 16895:06c15e88d383
added factory method to all Node classes; replaced Node classes instantiation with calls to factory methods; replaced identity tests on Node classes with ' == <node class>.getGenClass()' idiom
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 18 Aug 2014 14:04:21 +0200 |
parents | 162c6fba1168 |
children | c2270ad35f57 |
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/* * Copyright (c) 2012, 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.hotspot.stubs; import static com.oracle.graal.compiler.GraalCompiler.*; import static com.oracle.graal.compiler.common.GraalOptions.*; import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*; import java.util.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.*; import com.oracle.graal.compiler.target.*; import com.oracle.graal.debug.*; import com.oracle.graal.debug.Debug.Scope; import com.oracle.graal.debug.internal.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.hotspot.bridge.CompilerToVM.CodeInstallResult; import com.oracle.graal.hotspot.meta.*; import com.oracle.graal.hotspot.nodes.*; import com.oracle.graal.lir.asm.*; import com.oracle.graal.nodes.*; import com.oracle.graal.phases.*; import com.oracle.graal.phases.schedule.*; import com.oracle.graal.phases.tiers.*; //JaCoCo Exclude /** * Base class for implementing some low level code providing the out-of-line slow path for a snippet * and/or a callee saved call to a HotSpot C/C++ runtime function or even a another compiled Java * method. */ public abstract class Stub { /** * The linkage information for a call to this stub from compiled code. */ protected final HotSpotForeignCallLinkage linkage; /** * The code installed for the stub. */ protected InstalledCode code; /** * Compilation result from which {@link #code} was created. */ protected CompilationResult compResult; /** * The registers destroyed by this stub. */ private Set<Register> destroyedRegisters; public void initDestroyedRegisters(Set<Register> registers) { assert registers != null; assert destroyedRegisters == null || registers.equals(destroyedRegisters) : "cannot redefine"; destroyedRegisters = registers; } /** * Gets the registers defined by this stub. These are the temporaries of this stub and must thus * be caller saved by a callers of this stub. */ public Set<Register> getDestroyedRegisters() { assert destroyedRegisters != null : "not yet initialized"; return destroyedRegisters; } /** * Determines if this stub preserves all registers apart from those it * {@linkplain #getDestroyedRegisters() destroys}. */ public boolean preservesRegisters() { return true; } protected final HotSpotProviders providers; /** * Creates a new stub. * * @param linkage linkage details for a call to the stub */ public Stub(HotSpotProviders providers, HotSpotForeignCallLinkage linkage) { this.linkage = linkage; this.providers = providers; } /** * Gets the linkage for a call to this stub from compiled code. */ public HotSpotForeignCallLinkage getLinkage() { return linkage; } public RegisterConfig getRegisterConfig() { return null; } /** * Gets the graph that from which the code for this stub will be compiled. */ protected abstract StructuredGraph getGraph(); @Override public String toString() { return "Stub<" + linkage.getDescriptor() + ">"; } /** * Gets the method the stub's code will be associated with once installed. This may be null. */ protected abstract ResolvedJavaMethod getInstalledCodeOwner(); /** * Gets a context object for the debug scope created when producing the code for this stub. */ protected abstract Object debugScopeContext(); /** * Gets the code for this stub, compiling it first if necessary. */ public synchronized InstalledCode getCode(final Backend backend) { if (code == null) { try (Scope d = Debug.sandbox("CompilingStub", DebugScope.getConfig(), providers.getCodeCache(), debugScopeContext())) { final StructuredGraph graph = getGraph(); if (!(graph.start() instanceof StubStartNode)) { StubStartNode newStart = graph.add(StubStartNode.create(Stub.this)); newStart.setStateAfter(graph.start().stateAfter()); graph.replaceFixed(graph.start(), newStart); } CodeCacheProvider codeCache = providers.getCodeCache(); // The stub itself needs the incoming calling convention. CallingConvention incomingCc = linkage.getIncomingCallingConvention(); TargetDescription target = codeCache.getTarget(); compResult = new CompilationResult(toString()); try (Scope s0 = Debug.scope("StubCompilation", graph, providers.getCodeCache())) { Assumptions assumptions = new Assumptions(OptAssumptions.getValue()); Suites defaultSuites = providers.getSuites().getDefaultSuites(); Suites suites = new Suites(new PhaseSuite<>(), defaultSuites.getMidTier(), defaultSuites.getLowTier()); SchedulePhase schedule = emitFrontEnd(providers, target, graph, assumptions, null, providers.getSuites().getDefaultGraphBuilderSuite(), OptimisticOptimizations.ALL, getProfilingInfo(graph), null, suites); emitBackEnd(graph, Stub.this, incomingCc, getInstalledCodeOwner(), backend, target, compResult, CompilationResultBuilderFactory.Default, assumptions, schedule, getRegisterConfig()); } catch (Throwable e) { throw Debug.handle(e); } assert destroyedRegisters != null; try (Scope s = Debug.scope("CodeInstall")) { Stub stub = Stub.this; HotSpotRuntimeStub installedCode = new HotSpotRuntimeStub(stub); HotSpotCompiledCode hsCompResult = new HotSpotCompiledRuntimeStub(backend.getTarget(), stub, compResult); CodeInstallResult result = runtime().getCompilerToVM().installCode(hsCompResult, installedCode, null); if (result != CodeInstallResult.OK) { throw new GraalInternalError("Error installing stub %s: %s", Stub.this, result); } ((HotSpotCodeCacheProvider) codeCache).logOrDump(installedCode, compResult); code = installedCode; } catch (Throwable e) { throw Debug.handle(e); } } catch (Throwable e) { throw Debug.handle(e); } assert code != null : "error installing stub " + this; } return code; } /** * Gets the compilation result for this stub, compiling it first if necessary, and installing it * in code. */ public synchronized CompilationResult getCompilationResult(final Backend backend) { if (code == null) { getCode(backend); } return compResult; } }