--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/StandardOp.java	Thu Jan 22 16:35:37 2015 +0100
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/StandardOp.java	Fri Jan 23 13:11:28 2015 +0100
@@ -206,4 +206,19 @@
             }
         }
     }
+
+    @Opcode("BLACKHOLE")
+    public static class BlackholeOp extends LIRInstructionBase {
+
+        @Use({REG, STACK}) private Value value;
+
+        public BlackholeOp(Value value) {
+            this.value = value;
+        }
+
+        @Override
+        public void emitCode(CompilationResultBuilder crb) {
+            // do nothing, just keep value alive until at least here
+        }
+    }
 }

--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/gen/LIRGenerator.java	Thu Jan 22 16:35:37 2015 +0100
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/gen/LIRGenerator.java	Fri Jan 23 13:11:28 2015 +0100
@@ -393,4 +393,8 @@
     public LIRGenerationResult getResult() {
         return res;
     }
+
+    public void emitBlackhole(Value operand) {
+        append(new StandardOp.BlackholeOp(operand));
+    }
 }

--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/gen/LIRGeneratorTool.java	Thu Jan 22 16:35:37 2015 +0100
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/gen/LIRGeneratorTool.java	Fri Jan 23 13:11:28 2015 +0100
@@ -189,6 +189,8 @@
 
     Value emitArrayEquals(Kind kind, Value array1, Value array2, Value length);
 
+    void emitBlackhole(Value operand);
+
     @SuppressWarnings("unused")
     default Value emitCountLeadingZeros(Value value) {
         throw GraalInternalError.unimplemented();

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/BlackholeSubstitutions.java	Fri Jan 23 13:11:28 2015 +0100
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2015, 2015, 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.replacements;
+
+import com.oracle.graal.api.replacements.*;
+import com.oracle.graal.replacements.nodes.*;
+
+@ClassSubstitution(className = "org.openjdk.jmh.infra.Blackhole", optional = true)
+public class BlackholeSubstitutions {
+
+    @SuppressWarnings("unused")
+    @MethodSubstitution(isStatic = false, forced = true)
+    public static void consume(final Object thisObj, Object v) {
+        BlackholeNode.consume(v);
+    }
+
+    @SuppressWarnings("unused")
+    @MethodSubstitution(isStatic = false, forced = true)
+    public static void consume(final Object thisObj, Object[] v) {
+        BlackholeNode.consume(v);
+    }
+
+    @SuppressWarnings("unused")
+    @MethodSubstitution(isStatic = false, forced = true)
+    public static void consume(final Object thisObj, byte v) {
+        BlackholeNode.consume(v);
+    }
+
+    @SuppressWarnings("unused")
+    @MethodSubstitution(isStatic = false, forced = true)
+    public static void consume(final Object thisObj, boolean v) {
+        BlackholeNode.consume(v);
+    }
+
+    @SuppressWarnings("unused")
+    @MethodSubstitution(isStatic = false, forced = true)
+    public static void consume(final Object thisObj, char v) {
+        BlackholeNode.consume(v);
+    }
+
+    @SuppressWarnings("unused")
+    @MethodSubstitution(isStatic = false, forced = true)
+    public static void consume(final Object thisObj, short v) {
+        BlackholeNode.consume(v);
+    }
+
+    @SuppressWarnings("unused")
+    @MethodSubstitution(isStatic = false, forced = true)
+    public static void consume(final Object thisObj, int v) {
+        BlackholeNode.consume(v);
+    }
+
+    @SuppressWarnings("unused")
+    @MethodSubstitution(isStatic = false, forced = true)
+    public static void consume(final Object thisObj, long v) {
+        BlackholeNode.consume(v);
+    }
+
+    @SuppressWarnings("unused")
+    @MethodSubstitution(isStatic = false, forced = true)
+    public static void consume(final Object thisObj, float v) {
+        BlackholeNode.consume(v);
+    }
+
+    @SuppressWarnings("unused")
+    @MethodSubstitution(isStatic = false, forced = true)
+    public static void consume(final Object thisObj, double v) {
+        BlackholeNode.consume(v);
+    }
+}

--- a/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/GraalMethodSubstitutions.java	Thu Jan 22 16:35:37 2015 +0100
+++ b/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/GraalMethodSubstitutions.java	Fri Jan 23 13:11:28 2015 +0100
@@ -33,6 +33,7 @@
 import com.oracle.graal.api.runtime.*;
 import com.oracle.graal.graph.*;
 import com.oracle.graal.nodes.spi.*;
+import com.oracle.graal.options.*;
 
 /**
  * Method substitutions that are VM-independent.
@@ -40,6 +41,10 @@
 @ServiceProvider(ReplacementsProvider.class)
 public class GraalMethodSubstitutions implements ReplacementsProvider {
 
+    static class Options {
+        @Option(help = "") public static final OptionValue<Boolean> UseBlackholeSubstitution = new OptionValue<>(true);
+    }
+
     public void registerReplacements(MetaAccessProvider metaAccess, LoweringProvider loweringProvider, SnippetReflectionProvider snippetReflection, Replacements replacements, TargetDescription target) {
         BoxingSubstitutions.registerReplacements(replacements);
         if (Intrinsify.getValue()) {
@@ -55,6 +60,13 @@
             replacements.registerSubstitutions(Short.class, ShortSubstitutions.class);
             replacements.registerSubstitutions(UnsignedMath.class, UnsignedMathSubstitutions.class);
             replacements.registerSubstitutions(Edges.class, EdgesSubstitutions.class);
+            if (Options.UseBlackholeSubstitution.getValue()) {
+                replacements.registerSubstitutions(new Type() {
+                    public String getTypeName() {
+                        return "org.openjdk.jmh.infra.Blackhole";
+                    }
+                }, BlackholeSubstitutions.class);
+            }
         }
     }
 }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/nodes/BlackholeNode.java	Fri Jan 23 13:11:28 2015 +0100
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2015, 2015, 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.replacements.nodes;
+
+import com.oracle.graal.compiler.common.type.*;
+import com.oracle.graal.nodeinfo.*;
+import com.oracle.graal.nodes.*;
+import com.oracle.graal.nodes.spi.*;
+
+@NodeInfo
+public class BlackholeNode extends FixedWithNextNode implements LIRLowerable {
+
+    @Input ValueNode value;
+
+    public BlackholeNode(ValueNode value) {
+        super(StampFactory.forVoid());
+        this.value = value;
+    }
+
+    @Override
+    public void generate(NodeLIRBuilderTool gen) {
+        gen.getLIRGeneratorTool().emitBlackhole(gen.operand(value));
+    }
+
+    @NodeIntrinsic
+    @SuppressWarnings("unused")
+    public static void consume(boolean v) {
+    }
+
+    @NodeIntrinsic
+    @SuppressWarnings("unused")
+    public static void consume(byte v) {
+    }
+
+    @NodeIntrinsic
+    @SuppressWarnings("unused")
+    public static void consume(short v) {
+    }
+
+    @NodeIntrinsic
+    @SuppressWarnings("unused")
+    public static void consume(char v) {
+    }
+
+    @NodeIntrinsic
+    @SuppressWarnings("unused")
+    public static void consume(int v) {
+    }
+
+    @NodeIntrinsic
+    @SuppressWarnings("unused")
+    public static void consume(long v) {
+    }
+
+    @NodeIntrinsic
+    @SuppressWarnings("unused")
+    public static void consume(float v) {
+    }
+
+    @NodeIntrinsic
+    @SuppressWarnings("unused")
+    public static void consume(double v) {
+    }
+
+    @NodeIntrinsic
+    @SuppressWarnings("unused")
+    public static void consume(Object v) {
+    }
+}