--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/extended/ForeignCallNode.java 2017-02-15 17:07:19.084403045 -0800 @@ -0,0 +1,238 @@ +/* + * Copyright (c) 2011, 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.nodes.extended; + +import static org.graalvm.compiler.nodeinfo.InputType.Memory; +import static org.graalvm.compiler.nodeinfo.InputType.State; +import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN; +import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_20; + +import java.util.List; + +import org.graalvm.compiler.core.common.LocationIdentity; +import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor; +import org.graalvm.compiler.core.common.spi.ForeignCallLinkage; +import org.graalvm.compiler.core.common.spi.ForeignCallsProvider; +import org.graalvm.compiler.core.common.type.Stamp; +import org.graalvm.compiler.core.common.type.StampFactory; +import org.graalvm.compiler.graph.NodeClass; +import org.graalvm.compiler.graph.NodeInputList; +import org.graalvm.compiler.nodeinfo.NodeInfo; +import org.graalvm.compiler.nodeinfo.Verbosity; +import org.graalvm.compiler.nodes.DeoptimizingNode; +import org.graalvm.compiler.nodes.FrameState; +import org.graalvm.compiler.nodes.ValueNode; +import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext; +import org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint; +import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; +import org.graalvm.compiler.nodes.spi.LIRLowerable; +import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; + +import jdk.vm.ci.code.BytecodeFrame; +import jdk.vm.ci.meta.JavaKind; +import jdk.vm.ci.meta.ResolvedJavaMethod; +import jdk.vm.ci.meta.ResolvedJavaType; +import jdk.vm.ci.meta.Value; + +/** + * Node for a {@linkplain ForeignCallDescriptor foreign} call. + */ +// @formatter:off +@NodeInfo(nameTemplate = "ForeignCall#{p#descriptor/s}", + allowedUsageTypes = Memory, + cycles = CYCLES_UNKNOWN, + cyclesRationale = "A foreign call is a block box in terms of time spent in the callee.", + size = SIZE_20) +// @formatter:on +public class ForeignCallNode extends AbstractMemoryCheckpoint implements LIRLowerable, DeoptimizingNode.DeoptDuring, MemoryCheckpoint.Multi { + public static final NodeClass TYPE = NodeClass.create(ForeignCallNode.class); + + @Input protected NodeInputList arguments; + @OptionalInput(State) protected FrameState stateDuring; + protected final ForeignCallsProvider foreignCalls; + + protected final ForeignCallDescriptor descriptor; + protected int bci = BytecodeFrame.UNKNOWN_BCI; + + public static boolean intrinsify(GraphBuilderContext b, ResolvedJavaMethod targetMethod, @InjectedNodeParameter Stamp returnStamp, @InjectedNodeParameter ForeignCallsProvider foreignCalls, + ForeignCallDescriptor descriptor, ValueNode... arguments) { + ForeignCallNode node = new ForeignCallNode(foreignCalls, descriptor, arguments); + node.setStamp(returnStamp); + + assert verifyDescriptor(b, targetMethod, descriptor); + + /* + * Need to update the BCI of a ForeignCallNode so that it gets the stateDuring in the case + * that the foreign call can deoptimize. As with all deoptimization, we need a state in a + * non-intrinsic method. + */ + GraphBuilderContext nonIntrinsicAncestor = b.getNonIntrinsicAncestor(); + if (nonIntrinsicAncestor != null) { + node.setBci(nonIntrinsicAncestor.bci()); + } + + JavaKind returnKind = targetMethod.getSignature().getReturnKind(); + if (returnKind == JavaKind.Void) { + b.add(node); + } else { + b.addPush(returnKind, node); + } + + return true; + } + + static boolean verifyDescriptor(GraphBuilderContext b, ResolvedJavaMethod targetMethod, ForeignCallDescriptor descriptor) { + int parameters = 1; + for (Class arg : descriptor.getArgumentTypes()) { + ResolvedJavaType res = b.getMetaAccess().lookupJavaType(arg); + ResolvedJavaType parameterType = (ResolvedJavaType) targetMethod.getSignature().getParameterType(parameters, targetMethod.getDeclaringClass()); + assert parameterType.equals(res) : descriptor + ": parameter " + parameters + " mismatch: " + res + " != " + parameterType; + parameters++; + } + return true; + } + + public ForeignCallNode(ForeignCallsProvider foreignCalls, ForeignCallDescriptor descriptor, ValueNode... arguments) { + this(TYPE, foreignCalls, descriptor, arguments); + } + + public ForeignCallNode(ForeignCallsProvider foreignCalls, ForeignCallDescriptor descriptor, Stamp stamp, List arguments) { + super(TYPE, stamp); + this.arguments = new NodeInputList<>(this, arguments); + this.descriptor = descriptor; + this.foreignCalls = foreignCalls; + assert descriptor.getArgumentTypes().length == this.arguments.size() : "wrong number of arguments to " + this; + } + + public ForeignCallNode(ForeignCallsProvider foreignCalls, ForeignCallDescriptor descriptor, Stamp stamp) { + super(TYPE, stamp); + this.arguments = new NodeInputList<>(this); + this.descriptor = descriptor; + this.foreignCalls = foreignCalls; + } + + protected ForeignCallNode(NodeClass c, ForeignCallsProvider foreignCalls, ForeignCallDescriptor descriptor, ValueNode... arguments) { + super(c, StampFactory.forKind(JavaKind.fromJavaClass(descriptor.getResultType()))); + this.arguments = new NodeInputList<>(this, arguments); + this.descriptor = descriptor; + this.foreignCalls = foreignCalls; + assert descriptor.getArgumentTypes().length == this.arguments.size() : "wrong number of arguments to " + this; + } + + @Override + public boolean hasSideEffect() { + return !foreignCalls.isReexecutable(descriptor); + } + + public ForeignCallDescriptor getDescriptor() { + return descriptor; + } + + @Override + public LocationIdentity[] getLocationIdentities() { + return foreignCalls.getKilledLocations(descriptor); + } + + protected Value[] operands(NodeLIRBuilderTool gen) { + Value[] operands = new Value[arguments.size()]; + for (int i = 0; i < operands.length; i++) { + operands[i] = gen.operand(arguments.get(i)); + } + return operands; + } + + @Override + public void generate(NodeLIRBuilderTool gen) { + ForeignCallLinkage linkage = gen.getLIRGeneratorTool().getForeignCalls().lookupForeignCall(descriptor); + Value[] operands = operands(gen); + Value result = gen.getLIRGeneratorTool().emitForeignCall(linkage, gen.state(this), operands); + if (result != null) { + gen.setResult(this, result); + } + } + + @Override + public void setStateAfter(FrameState x) { + assert hasSideEffect() || x == null; + super.setStateAfter(x); + } + + @Override + public FrameState stateDuring() { + return stateDuring; + } + + @Override + public void setStateDuring(FrameState stateDuring) { + updateUsages(this.stateDuring, stateDuring); + this.stateDuring = stateDuring; + } + + public int getBci() { + return bci; + } + + /** + * Set the {@code bci} of the invoke bytecode for use when converting a stateAfter into a + * stateDuring. + */ + public void setBci(int bci) { + assert this.bci == BytecodeFrame.UNKNOWN_BCI || this.bci == bci; + this.bci = bci; + } + + @Override + public void computeStateDuring(FrameState currentStateAfter) { + FrameState newStateDuring; + if ((currentStateAfter.stackSize() > 0 && currentStateAfter.stackAt(currentStateAfter.stackSize() - 1) == this) || + (currentStateAfter.stackSize() > 1 && currentStateAfter.stackAt(currentStateAfter.stackSize() - 2) == this)) { + // The result of this call is on the top of stack, so roll back to the previous bci. + assert bci != BytecodeFrame.UNKNOWN_BCI : this; + newStateDuring = currentStateAfter.duplicateModifiedDuringCall(bci, this.getStackKind()); + } else { + newStateDuring = currentStateAfter; + } + setStateDuring(newStateDuring); + } + + @Override + public String toString(Verbosity verbosity) { + if (verbosity == Verbosity.Name) { + return super.toString(verbosity) + "#" + descriptor; + } + return super.toString(verbosity); + } + + @Override + public boolean canDeoptimize() { + return foreignCalls.canDeoptimize(descriptor); + } + + public boolean isGuaranteedSafepoint() { + return foreignCalls.isGuaranteedSafepoint(descriptor); + } + + public NodeInputList getArguments() { + return arguments; + } +}