Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/ForeignCallNode.java @ 10091:51b8585a1d70
more restrictive condition in ForeignCallNode.setStateAfter
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Wed, 19 Jun 2013 16:46:41 +0200 |
parents | ae6f0c381087 |
children | 4fc75b6ca3dd |
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/* * Copyright (c) 2011, 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.nodes.extended; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * Node for a {@linkplain ForeignCallDescriptor foreign} call. */ @NodeInfo(nameTemplate = "ForeignCall#{p#descriptor/s}") public class ForeignCallNode extends AbstractStateSplit implements LIRLowerable, DeoptimizingNode, MemoryCheckpoint.Multi { @Input private final NodeInputList<ValueNode> arguments; private final MetaAccessProvider runtime; @Input private FrameState deoptState; private final ForeignCallDescriptor descriptor; public ForeignCallNode(MetaAccessProvider runtime, ForeignCallDescriptor descriptor, ValueNode... arguments) { super(StampFactory.forKind(Kind.fromJavaClass(descriptor.getResultType()))); this.arguments = new NodeInputList<>(this, arguments); this.descriptor = descriptor; this.runtime = runtime; } protected ForeignCallNode(MetaAccessProvider runtime, ForeignCallDescriptor descriptor, Stamp stamp) { super(stamp); this.arguments = new NodeInputList<>(this); this.descriptor = descriptor; this.runtime = runtime; } @Override public boolean hasSideEffect() { return !runtime.isReexecutable(descriptor); } public ForeignCallDescriptor getDescriptor() { return descriptor; } @Override public LocationIdentity[] getLocationIdentities() { return runtime.getKilledLocations(descriptor); } protected Value[] operands(LIRGeneratorTool 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(LIRGeneratorTool gen) { ForeignCallLinkage linkage = gen.getRuntime().lookupForeignCall(descriptor); Value[] operands = operands(gen); Value result = gen.emitForeignCall(linkage, this, operands); if (result != null) { gen.setResult(this, result); } } @Override public FrameState getDeoptimizationState() { if (deoptState != null) { return deoptState; } else if (stateAfter() != null && canDeoptimize()) { FrameState stateDuring = stateAfter(); if ((stateDuring.stackSize() > 0 && stateDuring.stackAt(stateDuring.stackSize() - 1) == this) || (stateDuring.stackSize() > 1 && stateDuring.stackAt(stateDuring.stackSize() - 2) == this)) { stateDuring = stateDuring.duplicateModified(stateDuring.bci, stateDuring.rethrowException(), this.kind()); } setDeoptimizationState(stateDuring); return stateDuring; } return null; } @Override public void setDeoptimizationState(FrameState f) { updateUsages(deoptState, f); assert deoptState == null && canDeoptimize() : "shouldn't assign deoptState to " + this; deoptState = f; } @Override public void setStateAfter(FrameState x) { if (hasSideEffect()) { super.setStateAfter(x); } } @Override public String toString(Verbosity verbosity) { if (verbosity == Verbosity.Name) { return super.toString(verbosity) + "#" + descriptor; } return super.toString(verbosity); } @Override public boolean canDeoptimize() { return runtime.canDeoptimize(descriptor); } @Override public DeoptimizationReason getDeoptimizationReason() { return null; } }