Mercurial > hg > graal-compiler

changeset 14849:97a0878202c2

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Apply LIRGenerator refactoring to PTX backend.
author Josef Eisl <josef.eisl@jku.at>
date Wed, 26 Mar 2014 17:02:45 +0100
parents b7948d5c0092
children fbae9be45c95
files graal/com.oracle.graal.compiler.ptx/src/com/oracle/graal/compiler/ptx/PTXLIRGenerator.java graal/com.oracle.graal.compiler.ptx/src/com/oracle/graal/compiler/ptx/PTXNodeLIRGenerator.java graal/com.oracle.graal.hotspot.ptx/src/com/oracle/graal/hotspot/ptx/PTXHotSpotBackend.java graal/com.oracle.graal.hotspot.ptx/src/com/oracle/graal/hotspot/ptx/PTXHotSpotLIRGenerator.java graal/com.oracle.graal.hotspot.ptx/src/com/oracle/graal/hotspot/ptx/PTXHotSpotNodeLIRGenerator.java
diffstat 5 files changed, 279 insertions(+), 167 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.compiler.ptx/src/com/oracle/graal/compiler/ptx/PTXLIRGenerator.java	Wed Mar 26 17:02:13 2014 +0100
+++ b/graal/com.oracle.graal.compiler.ptx/src/com/oracle/graal/compiler/ptx/PTXLIRGenerator.java	Wed Mar 26 17:02:45 2014 +0100
@@ -29,13 +29,10 @@
 import static com.oracle.graal.lir.ptx.PTXBitManipulationOp.IntrinsicOpcode.*;
 import static com.oracle.graal.lir.ptx.PTXCompare.*;
 
-import java.lang.reflect.*;
-
 import com.oracle.graal.api.code.*;
 import com.oracle.graal.api.meta.*;
 import com.oracle.graal.asm.*;
 import com.oracle.graal.compiler.gen.*;
-import com.oracle.graal.debug.*;
 import com.oracle.graal.graph.*;
 import com.oracle.graal.lir.*;
 import com.oracle.graal.lir.StandardOp.JumpOp;
@@ -63,9 +60,7 @@
 import com.oracle.graal.nodes.*;
 import com.oracle.graal.nodes.calc.*;
 import com.oracle.graal.nodes.calc.FloatConvertNode.FloatConvert;
-import com.oracle.graal.nodes.cfg.*;
 import com.oracle.graal.nodes.extended.*;
-import com.oracle.graal.nodes.java.*;
 import com.oracle.graal.nodes.type.*;
 import com.oracle.graal.phases.util.*;
 
@@ -90,8 +85,8 @@
         }
     }
 
-    public PTXLIRGenerator(StructuredGraph graph, Providers providers, CallingConvention cc, LIRGenerationResult lirGenRes) {
-        super(graph, providers, cc, lirGenRes);
+    public PTXLIRGenerator(Providers providers, CallingConvention cc, LIRGenerationResult lirGenRes) {
+        super(providers, cc, lirGenRes);
         lirGenRes.getLIR().setSpillMoveFactory(new PTXSpillMoveFactory());
         int callVariables = cc.getArgumentCount() + (cc.getReturn().equals(Value.ILLEGAL) ? 0 : 1);
         lirGenRes.getLIR().setFirstVariableNumber(callVariables);
@@ -135,86 +130,6 @@
         return value;
     }
 
-    @Override
-    public void emitPrologue(StructuredGraph graph) {
-        // Need to emit .param directives based on incoming arguments and return value
-        CallingConvention incomingArguments = getCallingConvention();
-        Object returnObject = incomingArguments.getReturn();
-        AllocatableValue[] params = incomingArguments.getArguments();
-        int argCount = incomingArguments.getArgumentCount();
-
-        if (returnObject.equals(Value.ILLEGAL)) {
-            params = incomingArguments.getArguments();
-            append(new PTXParameterOp(params, false));
-        } else {
-            argCount = incomingArguments.getArgumentCount();
-            params = new Variable[argCount + 1];
-            for (int i = 0; i < argCount; i++) {
-                params[i] = incomingArguments.getArgument(i);
-            }
-            params[argCount] = (Variable) returnObject;
-            append(new PTXParameterOp(params, true));
-        }
-
-        for (ParameterNode param : graph.getNodes(ParameterNode.class)) {
-            int localIndex = param.index();
-            Value paramValue = params[param.index()];
-            int parameterIndex = localIndex;
-            if (!Modifier.isStatic(graph.method().getModifiers())) {
-                parameterIndex--;
-            }
-            Warp warpAnnotation = parameterIndex >= 0 ? MetaUtil.getParameterAnnotation(Warp.class, parameterIndex, graph.method()) : null;
-            if (warpAnnotation != null) {
-                setResult(param, emitWarpParam(paramValue.getKind().getStackKind(), warpAnnotation));
-            } else {
-                setResult(param, emitLoadParam(paramValue.getKind().getStackKind(), paramValue, null));
-            }
-        }
-    }
-
-    @Override
-    protected <T extends AbstractBlock<T>> void emitPrologue(ResolvedJavaMethod method, BytecodeParser<T> parser) {
-        // Need to emit .param directives based on incoming arguments and return value
-        CallingConvention incomingArguments = getCallingConvention();
-        Object returnObject = incomingArguments.getReturn();
-        AllocatableValue[] params = incomingArguments.getArguments();
-        int argCount = incomingArguments.getArgumentCount();
-
-        if (returnObject.equals(Value.ILLEGAL)) {
-            params = incomingArguments.getArguments();
-            append(new PTXParameterOp(params, false));
-        } else {
-            argCount = incomingArguments.getArgumentCount();
-            params = new Variable[argCount + 1];
-            for (int i = 0; i < argCount; i++) {
-                params[i] = incomingArguments.getArgument(i);
-            }
-            params[argCount] = (Variable) returnObject;
-            append(new PTXParameterOp(params, true));
-        }
-
-        Signature sig = method.getSignature();
-        boolean isStatic = Modifier.isStatic(method.getModifiers());
-
-        for (int i = 0; i < sig.getParameterCount(!isStatic); i++) {
-            Value paramValue = params[i];
-            int parameterIndex = i;
-            if (!isStatic) {
-                parameterIndex--;
-            }
-            Warp warpAnnotation = parameterIndex >= 0 ? MetaUtil.getParameterAnnotation(Warp.class, parameterIndex, method) : null;
-            if (warpAnnotation != null) {
-                // setResult(param, emitWarpParam(paramValue.getKind().getStackKind(),
-                // warpAnnotation));
-                parser.setParameter(i, emitWarpParam(paramValue.getKind().getStackKind(), warpAnnotation));
-            } else {
-                // setResult(param, emitLoadParam(paramValue.getKind().getStackKind(), paramValue,
-                // null));
-                parser.setParameter(i, emitLoadParam(paramValue.getKind().getStackKind(), paramValue, null));
-            }
-        }
-    }
-
     public Variable emitWarpParam(Kind kind, Warp annotation) {
         Variable result = newVariable(kind);
         Variable tid = newVariable(Kind.Char);
@@ -577,12 +492,6 @@
     }
 
     @Override
-    protected boolean peephole(ValueNode valueNode) {
-        // No peephole optimizations for now
-        return false;
-    }
-
-    @Override
     public Value emitDiv(Value a, Value b, DeoptimizingNode deopting) {
         Variable result = newVariable(a.getKind());
         switch (a.getKind()) {
@@ -849,16 +758,6 @@
     }
 
     @Override
-    protected void emitDirectCall(DirectCallTargetNode callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState callState) {
-        throw GraalInternalError.unimplemented("PTXLIRGenerator.emitDirectCall()");
-    }
-
-    @Override
-    protected void emitIndirectCall(IndirectCallTargetNode callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState callState) {
-        throw GraalInternalError.unimplemented("PTXLIRGenerator.emitIndirectCall()");
-    }
-
-    @Override
     protected void emitForeignCall(ForeignCallLinkage callTarget, Value result, Value[] arguments, Value[] temps, LIRFrameState info) {
         throw GraalInternalError.unimplemented("PTXLIRGenerator.emitForeignCall()");
     }
@@ -924,11 +823,11 @@
     }
 
     @Override
-    protected void emitReturn(Value input) {
+    public void emitReturn(Value input) {
         append(new ReturnOp(input));
     }
 
-    private void emitReturnNoVal() {
+    void emitReturnNoVal() {
         append(new ReturnNoValOp());
     }
 
@@ -947,38 +846,10 @@
     }
 
     @Override
-    public void visitCompareAndSwap(LoweredCompareAndSwapNode node, Value address) {
-        throw GraalInternalError.unimplemented("PTXLIRGenerator.visitCompareAndSwap()");
-    }
-
-    @Override
-    public void visitBreakpointNode(BreakpointNode node) {
-        throw GraalInternalError.unimplemented("PTXLIRGenerator.visitBreakpointNode()");
-    }
-
-    @Override
-    public void visitSafepointNode(SafepointNode i) {
-        // LIRFrameState info = state(i);
-        // append(new PTXSafepointOp(info, runtime().config, this));
-        Debug.log("visitSafePointNode unimplemented");
-    }
-
-    @Override
     public void emitUnwind(Value operand) {
         throw GraalInternalError.unimplemented("PTXLIRGenerator.emitUnwind()");
     }
 
-    @Override
-    public void emitNullCheck(ValueNode v, DeoptimizingNode deopting) {
-        assert v.getKind() == Kind.Object;
-        append(new PTXMove.NullCheckOp(load(operand(v)), state(deopting)));
-    }
-
-    @Override
-    public void visitInfopointNode(InfopointNode i) {
-        throw GraalInternalError.unimplemented("PTXLIRGenerator.visitInfopointNode()");
-    }
-
     public Variable emitLoadParam(Kind kind, Value address, DeoptimizingNode deopting) {
 
         PTXAddressValue loadAddress = asAddress(address);
@@ -1023,16 +894,4 @@
         return (new Variable(kind, 0));
     }
 
-    @Override
-    public void visitReturn(ReturnNode x) {
-        AllocatableValue operand = Value.ILLEGAL;
-        if (x.result() != null) {
-            operand = resultOperandFor(x.result().getKind());
-            // Load the global memory address from return parameter
-            Variable loadVar = emitLoadReturnAddress(operand.getKind(), operand, null);
-            // Store result in global memory whose location is loadVar
-            emitStoreReturnValue(operand.getKind(), loadVar, operand(x.result()), null);
-        }
-        emitReturnNoVal();
-    }
 }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.compiler.ptx/src/com/oracle/graal/compiler/ptx/PTXNodeLIRGenerator.java	Wed Mar 26 17:02:45 2014 +0100
@@ -0,0 +1,208 @@
+/*
+ * Copyright (c) 2013, 2014, 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.compiler.ptx;
+
+import java.lang.reflect.*;
+
+import com.oracle.graal.api.code.*;
+import com.oracle.graal.api.meta.*;
+import com.oracle.graal.compiler.gen.*;
+import com.oracle.graal.debug.*;
+import com.oracle.graal.graph.*;
+import com.oracle.graal.lir.*;
+import com.oracle.graal.lir.ptx.*;
+import com.oracle.graal.nodes.*;
+import com.oracle.graal.nodes.cfg.*;
+import com.oracle.graal.nodes.java.*;
+
+/**
+ * This class implements the PTX specific portion of the LIR generator.
+ */
+public class PTXNodeLIRGenerator extends NodeLIRGenerator {
+
+    // Number of the predicate register that can be used when needed.
+    // This value will be recorded and incremented in the LIR instruction
+    // that sets a predicate register. (e.g., CompareOp)
+    private int nextPredRegNum;
+
+    public static final ForeignCallDescriptor ARITHMETIC_FREM = new ForeignCallDescriptor("arithmeticFrem", float.class, float.class, float.class);
+    public static final ForeignCallDescriptor ARITHMETIC_DREM = new ForeignCallDescriptor("arithmeticDrem", double.class, double.class, double.class);
+
+    public static class PTXSpillMoveFactory implements LIR.SpillMoveFactory {
+
+        @Override
+        public LIRInstruction createMove(AllocatableValue result, Value input) {
+            throw GraalInternalError.unimplemented("PTXSpillMoveFactory.createMove()");
+        }
+    }
+
+    public PTXNodeLIRGenerator(StructuredGraph graph, LIRGenerationResult lirGenRes, LIRGenerator lirGen) {
+        super(graph, lirGenRes, lirGen);
+    }
+
+    public int getNextPredRegNumber() {
+        return nextPredRegNum;
+    }
+
+    @Override
+    public void emitPrologue(StructuredGraph graph) {
+        // Need to emit .param directives based on incoming arguments and return value
+        CallingConvention incomingArguments = gen.getCallingConvention();
+        Object returnObject = incomingArguments.getReturn();
+        AllocatableValue[] params = incomingArguments.getArguments();
+        int argCount = incomingArguments.getArgumentCount();
+
+        if (returnObject.equals(Value.ILLEGAL)) {
+            params = incomingArguments.getArguments();
+            append(new PTXParameterOp(params, false));
+        } else {
+            argCount = incomingArguments.getArgumentCount();
+            params = new Variable[argCount + 1];
+            for (int i = 0; i < argCount; i++) {
+                params[i] = incomingArguments.getArgument(i);
+            }
+            params[argCount] = (Variable) returnObject;
+            append(new PTXParameterOp(params, true));
+        }
+
+        for (ParameterNode param : graph.getNodes(ParameterNode.class)) {
+            int localIndex = param.index();
+            Value paramValue = params[param.index()];
+            int parameterIndex = localIndex;
+            if (!Modifier.isStatic(graph.method().getModifiers())) {
+                parameterIndex--;
+            }
+            Warp warpAnnotation = parameterIndex >= 0 ? MetaUtil.getParameterAnnotation(Warp.class, parameterIndex, graph.method()) : null;
+            if (warpAnnotation != null) {
+                setResult(param, getGen().emitWarpParam(paramValue.getKind().getStackKind(), warpAnnotation));
+            } else {
+                setResult(param, getGen().emitLoadParam(paramValue.getKind().getStackKind(), paramValue, null));
+            }
+        }
+    }
+
+    private PTXLIRGenerator getGen() {
+        return (PTXLIRGenerator) gen;
+    }
+
+    @Override
+    protected <T extends AbstractBlock<T>> void emitPrologue(ResolvedJavaMethod method, BytecodeParser<T> parser) {
+        // Need to emit .param directives based on incoming arguments and return value
+        CallingConvention incomingArguments = gen.getCallingConvention();
+        Object returnObject = incomingArguments.getReturn();
+        AllocatableValue[] params = incomingArguments.getArguments();
+        int argCount = incomingArguments.getArgumentCount();
+
+        if (returnObject.equals(Value.ILLEGAL)) {
+            params = incomingArguments.getArguments();
+            append(new PTXParameterOp(params, false));
+        } else {
+            argCount = incomingArguments.getArgumentCount();
+            params = new Variable[argCount + 1];
+            for (int i = 0; i < argCount; i++) {
+                params[i] = incomingArguments.getArgument(i);
+            }
+            params[argCount] = (Variable) returnObject;
+            append(new PTXParameterOp(params, true));
+        }
+
+        Signature sig = method.getSignature();
+        boolean isStatic = Modifier.isStatic(method.getModifiers());
+
+        for (int i = 0; i < sig.getParameterCount(!isStatic); i++) {
+            Value paramValue = params[i];
+            int parameterIndex = i;
+            if (!isStatic) {
+                parameterIndex--;
+            }
+            Warp warpAnnotation = parameterIndex >= 0 ? MetaUtil.getParameterAnnotation(Warp.class, parameterIndex, method) : null;
+            if (warpAnnotation != null) {
+                // setResult(param, emitWarpParam(paramValue.getKind().getStackKind(),
+                // warpAnnotation));
+                parser.setParameter(i, getGen().emitWarpParam(paramValue.getKind().getStackKind(), warpAnnotation));
+            } else {
+                // setResult(param, emitLoadParam(paramValue.getKind().getStackKind(), paramValue,
+                // null));
+                parser.setParameter(i, getGen().emitLoadParam(paramValue.getKind().getStackKind(), paramValue, null));
+            }
+        }
+    }
+
+    @Override
+    protected boolean peephole(ValueNode valueNode) {
+        // No peephole optimizations for now
+        return false;
+    }
+
+    @Override
+    protected void emitDirectCall(DirectCallTargetNode callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState callState) {
+        throw GraalInternalError.unimplemented("PTXLIRGenerator.emitDirectCall()");
+    }
+
+    @Override
+    protected void emitIndirectCall(IndirectCallTargetNode callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState callState) {
+        throw GraalInternalError.unimplemented("PTXLIRGenerator.emitIndirectCall()");
+    }
+
+    @Override
+    public void visitCompareAndSwap(LoweredCompareAndSwapNode node, Value address) {
+        throw GraalInternalError.unimplemented("PTXLIRGenerator.visitCompareAndSwap()");
+    }
+
+    @Override
+    public void visitBreakpointNode(BreakpointNode node) {
+        throw GraalInternalError.unimplemented("PTXLIRGenerator.visitBreakpointNode()");
+    }
+
+    @Override
+    public void visitSafepointNode(SafepointNode i) {
+        // LIRFrameState info = state(i);
+        // append(new PTXSafepointOp(info, runtime().config, this));
+        Debug.log("visitSafePointNode unimplemented");
+    }
+
+    @Override
+    public void emitNullCheck(ValueNode v, DeoptimizingNode deopting) {
+        assert v.getKind() == Kind.Object;
+        append(new PTXMove.NullCheckOp(gen.load(operand(v)), state(deopting)));
+    }
+
+    @Override
+    public void visitInfopointNode(InfopointNode i) {
+        throw GraalInternalError.unimplemented("PTXLIRGenerator.visitInfopointNode()");
+    }
+
+    @Override
+    public void visitReturn(ReturnNode x) {
+        AllocatableValue operand = Value.ILLEGAL;
+        if (x.result() != null) {
+            operand = gen.resultOperandFor(x.result().getKind());
+            // Load the global memory address from return parameter
+            Variable loadVar = getGen().emitLoadReturnAddress(operand.getKind(), operand, null);
+            // Store result in global memory whose location is loadVar
+            getGen().emitStoreReturnValue(operand.getKind(), loadVar, operand(x.result()), null);
+        }
+        getGen().emitReturnNoVal();
+    }
+}
--- a/graal/com.oracle.graal.hotspot.ptx/src/com/oracle/graal/hotspot/ptx/PTXHotSpotBackend.java	Wed Mar 26 17:02:13 2014 +0100
+++ b/graal/com.oracle.graal.hotspot.ptx/src/com/oracle/graal/hotspot/ptx/PTXHotSpotBackend.java	Wed Mar 26 17:02:45 2014 +0100
@@ -352,8 +352,13 @@
     }
 
     @Override
-    public LIRGenerator newLIRGenerator(StructuredGraph graph, CallingConvention cc, LIRGenerationResult lirGenRes) {
-        return new PTXHotSpotLIRGenerator(graph, getProviders(), getRuntime().getConfig(), cc, lirGenRes);
+    public LIRGenerator newLIRGenerator(CallingConvention cc, LIRGenerationResult lirGenRes) {
+        return new PTXHotSpotLIRGenerator(getProviders(), getRuntime().getConfig(), cc, lirGenRes);
+    }
+
+    @Override
+    public NodeLIRGenerator newNodeLIRGenerator(StructuredGraph graph, LIRGenerationResult lirGenRes, LIRGenerator lirGen) {
+        return new PTXHotSpotNodeLIRGenerator(graph, lirGenRes, lirGen);
     }
 
     private static void emitKernelEntry(CompilationResultBuilder crb, LIR lir, ResolvedJavaMethod codeCacheOwner) {
--- a/graal/com.oracle.graal.hotspot.ptx/src/com/oracle/graal/hotspot/ptx/PTXHotSpotLIRGenerator.java	Wed Mar 26 17:02:13 2014 +0100
+++ b/graal/com.oracle.graal.hotspot.ptx/src/com/oracle/graal/hotspot/ptx/PTXHotSpotLIRGenerator.java	Wed Mar 26 17:02:45 2014 +0100
@@ -30,23 +30,17 @@
 import com.oracle.graal.graph.*;
 import com.oracle.graal.hotspot.*;
 import com.oracle.graal.hotspot.meta.*;
-import com.oracle.graal.hotspot.nodes.*;
-import com.oracle.graal.nodes.*;
 
 /**
  * LIR generator specialized for PTX HotSpot.
  */
 public class PTXHotSpotLIRGenerator extends PTXLIRGenerator implements HotSpotLIRGenerator {
 
-    protected PTXHotSpotLIRGenerator(StructuredGraph graph, HotSpotProviders providers, HotSpotVMConfig config, CallingConvention cc, LIRGenerationResult lirGenRes) {
-        super(graph, providers, cc, lirGenRes);
+    protected PTXHotSpotLIRGenerator(HotSpotProviders providers, HotSpotVMConfig config, CallingConvention cc, LIRGenerationResult lirGenRes) {
+        super(providers, cc, lirGenRes);
         assert config.basicLockSize == 8;
     }
 
-    public void emitPrefetchAllocate(ValueNode address, ValueNode distance) {
-        // nop
-    }
-
     public void emitTailcall(Value[] args, Value address) {
         throw GraalInternalError.unimplemented();
     }
@@ -55,18 +49,6 @@
         throw GraalInternalError.unimplemented();
     }
 
-    public void emitPatchReturnAddress(ValueNode address) {
-        throw GraalInternalError.unimplemented();
-    }
-
-    public void emitJumpToExceptionHandlerInCaller(ValueNode handlerInCallerPc, ValueNode exception, ValueNode exceptionPc) {
-        throw GraalInternalError.unimplemented();
-    }
-
-    public void visitDirectCompareAndSwap(DirectCompareAndSwapNode x) {
-        throw GraalInternalError.unimplemented();
-    }
-
     public StackSlot getLockSlot(int lockDepth) {
         throw GraalInternalError.unimplemented();
     }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.hotspot.ptx/src/com/oracle/graal/hotspot/ptx/PTXHotSpotNodeLIRGenerator.java	Wed Mar 26 17:02:45 2014 +0100
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2014, 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.ptx;
+
+import com.oracle.graal.compiler.gen.*;
+import com.oracle.graal.compiler.ptx.*;
+import com.oracle.graal.graph.*;
+import com.oracle.graal.hotspot.*;
+import com.oracle.graal.hotspot.nodes.*;
+import com.oracle.graal.nodes.*;
+
+/**
+ * LIR generator specialized for PTX HotSpot.
+ */
+public class PTXHotSpotNodeLIRGenerator extends PTXNodeLIRGenerator implements HotSpotNodeLIRGenerator {
+
+    protected PTXHotSpotNodeLIRGenerator(StructuredGraph graph, LIRGenerationResult lirGenRes, LIRGenerator lirGen) {
+        super(graph, lirGenRes, lirGen);
+    }
+
+    public void emitPrefetchAllocate(ValueNode address, ValueNode distance) {
+        // nop
+    }
+
+    public void emitPatchReturnAddress(ValueNode address) {
+        throw GraalInternalError.unimplemented();
+    }
+
+    public void emitJumpToExceptionHandlerInCaller(ValueNode handlerInCallerPc, ValueNode exception, ValueNode exceptionPc) {
+        throw GraalInternalError.unimplemented();
+    }
+
+    public void visitDirectCompareAndSwap(DirectCompareAndSwapNode x) {
+        throw GraalInternalError.unimplemented();
+    }
+
+}