Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/Stub.java @ 23347:f868bd0c3f02
Make CallingConvention in HotSpotHostBackend instead of passing it in as a parameter to GraalCompiler.compile
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Thu, 21 Jan 2016 10:35:29 -0800 |
parents | 52f4acf6f365 |
children | 4bfb6ce22dd3 |
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/* * Copyright (c) 2012, 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 com.oracle.graal.hotspot.stubs; import static com.oracle.graal.compiler.GraalCompiler.emitBackEnd; import static com.oracle.graal.compiler.GraalCompiler.emitFrontEnd; import static com.oracle.graal.hotspot.HotSpotHostBackend.UNCOMMON_TRAP_HANDLER; import java.util.ListIterator; import java.util.Set; import jdk.vm.ci.code.CodeCacheProvider; import jdk.vm.ci.code.InstalledCode; import jdk.vm.ci.code.Register; import jdk.vm.ci.code.RegisterConfig; import jdk.vm.ci.code.site.Call; import jdk.vm.ci.code.site.ConstantReference; import jdk.vm.ci.code.site.DataPatch; import jdk.vm.ci.code.site.Infopoint; import jdk.vm.ci.hotspot.HotSpotCompiledCode; import jdk.vm.ci.hotspot.HotSpotMetaspaceConstant; import jdk.vm.ci.meta.DefaultProfilingInfo; import jdk.vm.ci.meta.ResolvedJavaMethod; import jdk.vm.ci.meta.TriState; import com.oracle.graal.code.CompilationResult; import com.oracle.graal.compiler.target.Backend; import com.oracle.graal.debug.Debug; import com.oracle.graal.debug.Debug.Scope; import com.oracle.graal.debug.internal.DebugScope; import com.oracle.graal.hotspot.HotSpotCompiledCodeBuilder; import com.oracle.graal.hotspot.HotSpotForeignCallLinkage; import com.oracle.graal.hotspot.meta.HotSpotProviders; import com.oracle.graal.hotspot.nodes.StubStartNode; import com.oracle.graal.lir.asm.CompilationResultBuilderFactory; import com.oracle.graal.lir.phases.LIRPhase; import com.oracle.graal.lir.phases.LIRSuites; import com.oracle.graal.lir.phases.PostAllocationOptimizationPhase.PostAllocationOptimizationContext; import com.oracle.graal.lir.profiling.MoveProfiling; import com.oracle.graal.nodes.StructuredGraph; import com.oracle.graal.phases.OptimisticOptimizations; import com.oracle.graal.phases.PhaseSuite; import com.oracle.graal.phases.tiers.Suites; //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. */ @SuppressWarnings("try") 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(); // Stubs cannot be recompiled so they cannot be compiled with assumptions assert graph.getAssumptions() == null; if (!(graph.start() instanceof StubStartNode)) { StubStartNode newStart = graph.add(new StubStartNode(Stub.this)); newStart.setStateAfter(graph.start().stateAfter()); graph.replaceFixed(graph.start(), newStart); } CodeCacheProvider codeCache = providers.getCodeCache(); compResult = new CompilationResult(toString()); try (Scope s0 = Debug.scope("StubCompilation", graph, providers.getCodeCache())) { Suites defaultSuites = providers.getSuites().getDefaultSuites(); Suites suites = new Suites(new PhaseSuite<>(), defaultSuites.getMidTier(), defaultSuites.getLowTier()); emitFrontEnd(providers, backend, graph, providers.getSuites().getDefaultGraphBuilderSuite(), OptimisticOptimizations.ALL, DefaultProfilingInfo.get(TriState.UNKNOWN), suites); LIRSuites lirSuites = createLIRSuites(); emitBackEnd(graph, Stub.this, getInstalledCodeOwner(), backend, compResult, CompilationResultBuilderFactory.Default, getRegisterConfig(), lirSuites); assert checkStubInvariants(); } catch (Throwable e) { throw Debug.handle(e); } assert destroyedRegisters != null; try (Scope s = Debug.scope("CodeInstall")) { HotSpotCompiledCode compiledCode = HotSpotCompiledCodeBuilder.createCompiledCode(null, null, compResult); code = codeCache.installCode(null, compiledCode, null, null, false); } catch (Throwable e) { throw Debug.handle(e); } } catch (Throwable e) { throw Debug.handle(e); } assert code != null : "error installing stub " + this; } return code; } /** * Checks the conditions a compilation must satisfy to be installed as a RuntimeStub. */ private boolean checkStubInvariants() { assert compResult.getExceptionHandlers().isEmpty() : this; // Stubs cannot be recompiled so they cannot be compiled with // assumptions and there is no point in recording evol_method dependencies assert compResult.getAssumptions() == null : "stubs should not use assumptions: " + this; for (DataPatch data : compResult.getDataPatches()) { if (data.reference instanceof ConstantReference) { ConstantReference ref = (ConstantReference) data.reference; if (ref.getConstant() instanceof HotSpotMetaspaceConstant) { HotSpotMetaspaceConstant c = (HotSpotMetaspaceConstant) ref.getConstant(); if (c.asResolvedJavaType() != null && c.asResolvedJavaType().getName().equals("[I")) { // special handling for NewArrayStub // embedding the type '[I' is safe, since it is never unloaded continue; } } } assert !(data.reference instanceof ConstantReference) : this + " cannot have embedded object or metadata constant: " + data.reference; } for (Infopoint infopoint : compResult.getInfopoints()) { assert infopoint instanceof Call : this + " cannot have non-call infopoint: " + infopoint; Call call = (Call) infopoint; assert call.target instanceof HotSpotForeignCallLinkage : this + " cannot have non runtime call: " + call.target; HotSpotForeignCallLinkage callLinkage = (HotSpotForeignCallLinkage) call.target; assert !callLinkage.isCompiledStub() || callLinkage.getDescriptor().equals(UNCOMMON_TRAP_HANDLER) : this + " cannot call compiled stub " + callLinkage; } return true; } private LIRSuites createLIRSuites() { LIRSuites lirSuites = new LIRSuites(providers.getSuites().getDefaultLIRSuites()); ListIterator<LIRPhase<PostAllocationOptimizationContext>> moveProfiling = lirSuites.getPostAllocationOptimizationStage().findPhase(MoveProfiling.class); if (moveProfiling != null) { moveProfiling.remove(); } return lirSuites; } /** * 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; } }