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/*
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* Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.graalvm.compiler.hotspot.amd64;
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import static org.graalvm.compiler.hotspot.HotSpotBackend.EXCEPTION_HANDLER_IN_CALLER;
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import static jdk.vm.ci.amd64.AMD64.rbp;
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import static jdk.vm.ci.code.ValueUtil.isStackSlot;
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import org.graalvm.compiler.core.amd64.AMD64NodeLIRBuilder;
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import org.graalvm.compiler.core.amd64.AMD64NodeMatchRules;
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import org.graalvm.compiler.core.common.LIRKind;
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import org.graalvm.compiler.core.common.spi.ForeignCallLinkage;
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import org.graalvm.compiler.core.gen.DebugInfoBuilder;
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import org.graalvm.compiler.debug.Debug;
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import org.graalvm.compiler.hotspot.HotSpotDebugInfoBuilder;
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import org.graalvm.compiler.hotspot.HotSpotLIRGenerator;
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import org.graalvm.compiler.hotspot.HotSpotLockStack;
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import org.graalvm.compiler.hotspot.HotSpotNodeLIRBuilder;
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import org.graalvm.compiler.hotspot.nodes.DirectCompareAndSwapNode;
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import org.graalvm.compiler.hotspot.nodes.HotSpotDirectCallTargetNode;
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import org.graalvm.compiler.hotspot.nodes.HotSpotIndirectCallTargetNode;
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import org.graalvm.compiler.lir.LIRFrameState;
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import org.graalvm.compiler.lir.Variable;
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import org.graalvm.compiler.lir.amd64.AMD64BreakpointOp;
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import org.graalvm.compiler.lir.amd64.AMD64Move.CompareAndSwapOp;
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import org.graalvm.compiler.lir.gen.LIRGeneratorTool;
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import org.graalvm.compiler.nodes.BreakpointNode;
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import org.graalvm.compiler.nodes.CallTargetNode.InvokeKind;
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import org.graalvm.compiler.nodes.DirectCallTargetNode;
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import org.graalvm.compiler.nodes.FullInfopointNode;
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import org.graalvm.compiler.nodes.IndirectCallTargetNode;
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import org.graalvm.compiler.nodes.ParameterNode;
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import org.graalvm.compiler.nodes.SafepointNode;
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import org.graalvm.compiler.nodes.StructuredGraph;
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import org.graalvm.compiler.nodes.ValueNode;
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import org.graalvm.compiler.nodes.spi.NodeValueMap;
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import jdk.vm.ci.amd64.AMD64;
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import jdk.vm.ci.amd64.AMD64Kind;
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import jdk.vm.ci.code.BytecodeFrame;
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import jdk.vm.ci.code.CallingConvention;
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import jdk.vm.ci.code.Register;
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import jdk.vm.ci.code.RegisterValue;
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import jdk.vm.ci.code.StackSlot;
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import jdk.vm.ci.code.ValueUtil;
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import jdk.vm.ci.hotspot.HotSpotCallingConventionType;
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import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
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import jdk.vm.ci.meta.AllocatableValue;
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import jdk.vm.ci.meta.JavaType;
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import jdk.vm.ci.meta.Value;
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/**
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* LIR generator specialized for AMD64 HotSpot.
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*/
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public class AMD64HotSpotNodeLIRBuilder extends AMD64NodeLIRBuilder implements HotSpotNodeLIRBuilder {
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public AMD64HotSpotNodeLIRBuilder(StructuredGraph graph, LIRGeneratorTool gen, AMD64NodeMatchRules nodeMatchRules) {
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super(graph, gen, nodeMatchRules);
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assert gen instanceof AMD64HotSpotLIRGenerator;
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assert getDebugInfoBuilder() instanceof HotSpotDebugInfoBuilder;
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((AMD64HotSpotLIRGenerator) gen).setDebugInfoBuilder(((HotSpotDebugInfoBuilder) getDebugInfoBuilder()));
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}
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private AMD64HotSpotLIRGenerator getGen() {
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return (AMD64HotSpotLIRGenerator) gen;
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}
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@Override
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protected DebugInfoBuilder createDebugInfoBuilder(StructuredGraph graph, NodeValueMap nodeValueMap) {
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HotSpotLockStack lockStack = new HotSpotLockStack(gen.getResult().getFrameMapBuilder(), LIRKind.value(AMD64Kind.QWORD));
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return new HotSpotDebugInfoBuilder(nodeValueMap, lockStack, (HotSpotLIRGenerator) gen);
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}
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@Override
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protected void emitPrologue(StructuredGraph graph) {
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CallingConvention incomingArguments = gen.getResult().getCallingConvention();
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Value[] params = new Value[incomingArguments.getArgumentCount() + 1];
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for (int i = 0; i < params.length - 1; i++) {
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params[i] = incomingArguments.getArgument(i);
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if (isStackSlot(params[i])) {
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StackSlot slot = ValueUtil.asStackSlot(params[i]);
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if (slot.isInCallerFrame() && !gen.getResult().getLIR().hasArgInCallerFrame()) {
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gen.getResult().getLIR().setHasArgInCallerFrame();
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}
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}
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}
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params[params.length - 1] = rbp.asValue(LIRKind.value(AMD64Kind.QWORD));
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gen.emitIncomingValues(params);
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getGen().emitSaveRbp();
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getGen().append(((HotSpotDebugInfoBuilder) getDebugInfoBuilder()).lockStack());
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for (ParameterNode param : graph.getNodes(ParameterNode.TYPE)) {
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Value paramValue = params[param.index()];
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assert paramValue.getValueKind().equals(getLIRGeneratorTool().getLIRKind(param.stamp())) : paramValue.getValueKind() + " != " + param.stamp();
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setResult(param, gen.emitMove(paramValue));
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}
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}
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@Override
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public void visitSafepointNode(SafepointNode i) {
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LIRFrameState info = state(i);
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append(new AMD64HotSpotSafepointOp(info, getGen().config, this));
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}
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@Override
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protected void emitDirectCall(DirectCallTargetNode callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState callState) {
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InvokeKind invokeKind = ((HotSpotDirectCallTargetNode) callTarget).invokeKind();
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if (invokeKind.isIndirect()) {
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append(new AMD64HotspotDirectVirtualCallOp(callTarget.targetMethod(), result, parameters, temps, callState, invokeKind, getGen().config));
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} else {
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assert invokeKind.isDirect();
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HotSpotResolvedJavaMethod resolvedMethod = (HotSpotResolvedJavaMethod) callTarget.targetMethod();
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assert resolvedMethod.isConcrete() : "Cannot make direct call to abstract method.";
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append(new AMD64HotSpotDirectStaticCallOp(callTarget.targetMethod(), result, parameters, temps, callState, invokeKind, getGen().config));
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}
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}
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@Override
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protected void emitIndirectCall(IndirectCallTargetNode callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState callState) {
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if (callTarget instanceof HotSpotIndirectCallTargetNode) {
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Value metaspaceMethodSrc = operand(((HotSpotIndirectCallTargetNode) callTarget).metaspaceMethod());
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Value targetAddressSrc = operand(callTarget.computedAddress());
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AllocatableValue metaspaceMethodDst = AMD64.rbx.asValue(metaspaceMethodSrc.getValueKind());
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AllocatableValue targetAddressDst = AMD64.rax.asValue(targetAddressSrc.getValueKind());
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gen.emitMove(metaspaceMethodDst, metaspaceMethodSrc);
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gen.emitMove(targetAddressDst, targetAddressSrc);
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append(new AMD64IndirectCallOp(callTarget.targetMethod(), result, parameters, temps, metaspaceMethodDst, targetAddressDst, callState, getGen().config));
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} else {
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super.emitIndirectCall(callTarget, result, parameters, temps, callState);
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}
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}
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@Override
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public void emitPatchReturnAddress(ValueNode address) {
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append(new AMD64HotSpotPatchReturnAddressOp(gen.load(operand(address))));
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}
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@Override
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public void emitJumpToExceptionHandlerInCaller(ValueNode handlerInCallerPc, ValueNode exception, ValueNode exceptionPc) {
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Variable handler = gen.load(operand(handlerInCallerPc));
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ForeignCallLinkage linkage = gen.getForeignCalls().lookupForeignCall(EXCEPTION_HANDLER_IN_CALLER);
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CallingConvention outgoingCc = linkage.getOutgoingCallingConvention();
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assert outgoingCc.getArgumentCount() == 2;
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RegisterValue exceptionFixed = (RegisterValue) outgoingCc.getArgument(0);
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RegisterValue exceptionPcFixed = (RegisterValue) outgoingCc.getArgument(1);
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gen.emitMove(exceptionFixed, operand(exception));
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gen.emitMove(exceptionPcFixed, operand(exceptionPc));
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Register thread = getGen().getProviders().getRegisters().getThreadRegister();
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AMD64HotSpotJumpToExceptionHandlerInCallerOp op = new AMD64HotSpotJumpToExceptionHandlerInCallerOp(handler, exceptionFixed, exceptionPcFixed, getGen().config.threadIsMethodHandleReturnOffset,
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thread);
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append(op);
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}
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@Override
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public void visitFullInfopointNode(FullInfopointNode i) {
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if (i.getState() != null && i.getState().bci == BytecodeFrame.AFTER_BCI) {
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Debug.log("Ignoring InfopointNode for AFTER_BCI");
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} else {
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super.visitFullInfopointNode(i);
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}
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}
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@Override
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public void visitDirectCompareAndSwap(DirectCompareAndSwapNode x) {
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Value expected = gen.loadNonConst(operand(x.expectedValue()));
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Variable newVal = gen.load(operand(x.newValue()));
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assert expected.getValueKind().equals(newVal.getValueKind());
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RegisterValue raxLocal = AMD64.rax.asValue(expected.getValueKind());
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gen.emitMove(raxLocal, expected);
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append(new CompareAndSwapOp((AMD64Kind) expected.getPlatformKind(), raxLocal, getGen().asAddressValue(operand(x.getAddress())), raxLocal, newVal));
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setResult(x, gen.emitMove(raxLocal));
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}
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@Override
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public void visitBreakpointNode(BreakpointNode node) {
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JavaType[] sig = new JavaType[node.arguments().size()];
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for (int i = 0; i < sig.length; i++) {
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sig[i] = node.arguments().get(i).stamp().javaType(gen.getMetaAccess());
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}
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Value[] parameters = visitInvokeArguments(gen.getResult().getFrameMapBuilder().getRegisterConfig().getCallingConvention(HotSpotCallingConventionType.JavaCall, null, sig, gen),
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node.arguments());
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append(new AMD64BreakpointOp(parameters));
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}
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}
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