--- a/graal/com.oracle.graal.api.directives/src/com/oracle/graal/api/directives/GraalDirectives.java	Wed Nov 18 15:53:20 2015 +0100
+++ b/graal/com.oracle.graal.api.directives/src/com/oracle/graal/api/directives/GraalDirectives.java	Wed Nov 18 15:51:04 2015 +0100
@@ -179,6 +179,69 @@
     }
 
     /**
+     * Forces a value to be kept in a register.
+     */
+    @SuppressWarnings("unused")
+    public static void bindToRegister(boolean value) {
+    }
+
+    /**
+     * Forces a value to be kept in a register.
+     */
+    @SuppressWarnings("unused")
+    public static void bindToRegister(byte value) {
+    }
+
+    /**
+     * Forces a value to be kept in a register.
+     */
+    @SuppressWarnings("unused")
+    public static void bindToRegister(short value) {
+    }
+
+    /**
+     * Forces a value to be kept in a register.
+     */
+    @SuppressWarnings("unused")
+    public static void bindToRegister(char value) {
+    }
+
+    /**
+     * Forces a value to be kept in a register.
+     */
+    @SuppressWarnings("unused")
+    public static void bindToRegister(int value) {
+    }
+
+    /**
+     * Forces a value to be kept in a register.
+     */
+    @SuppressWarnings("unused")
+    public static void bindToRegister(long value) {
+    }
+
+    /**
+     * Forces a value to be kept in a register.
+     */
+    @SuppressWarnings("unused")
+    public static void bindToRegister(float value) {
+    }
+
+    /**
+     * Forces a value to be kept in a register.
+     */
+    @SuppressWarnings("unused")
+    public static void bindToRegister(double value) {
+    }
+
+    /**
+     * Forces a value to be kept in a register.
+     */
+    @SuppressWarnings("unused")
+    public static void bindToRegister(Object value) {
+    }
+
+    /**
      * Spills all caller saved registers.
      */
     public static void spillRegisters() {

--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/StandardOp.java	Wed Nov 18 15:53:20 2015 +0100
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/StandardOp.java	Wed Nov 18 15:51:04 2015 +0100
@@ -380,6 +380,22 @@
         }
     }
 
+    public static final class BindToRegisterOp extends LIRInstruction {
+        public static final LIRInstructionClass<BindToRegisterOp> TYPE = LIRInstructionClass.create(BindToRegisterOp.class);
+
+        @Use({REG}) private Value value;
+
+        public BindToRegisterOp(Value value) {
+            super(TYPE);
+            this.value = value;
+        }
+
+        @Override
+        public void emitCode(CompilationResultBuilder crb) {
+            // do nothing, just keep value alive until at least here
+        }
+    }
+
     @Opcode("SPILLREGISTERS")
     public static final class SpillRegistersOp extends LIRInstruction {
         public static final LIRInstructionClass<SpillRegistersOp> TYPE = LIRInstructionClass.create(SpillRegistersOp.class);

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/debug/BindToRegisterNode.java	Wed Nov 18 15:51:04 2015 +0100
@@ -0,0 +1,49 @@
+/*
+ * 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.nodes.debug;
+
+import com.oracle.graal.compiler.common.type.StampFactory;
+import com.oracle.graal.graph.NodeClass;
+import com.oracle.graal.lir.StandardOp;
+import com.oracle.graal.nodeinfo.NodeInfo;
+import com.oracle.graal.nodes.FixedWithNextNode;
+import com.oracle.graal.nodes.ValueNode;
+import com.oracle.graal.nodes.spi.LIRLowerable;
+import com.oracle.graal.nodes.spi.NodeLIRBuilderTool;
+
+@NodeInfo
+public final class BindToRegisterNode extends FixedWithNextNode implements LIRLowerable {
+
+    public static final NodeClass<BindToRegisterNode> TYPE = NodeClass.create(BindToRegisterNode.class);
+    @Input ValueNode value;
+
+    public BindToRegisterNode(ValueNode value) {
+        super(TYPE, StampFactory.forVoid());
+        this.value = value;
+    }
+
+    @Override
+    public void generate(NodeLIRBuilderTool gen) {
+        gen.getLIRGeneratorTool().append(new StandardOp.BindToRegisterOp(gen.getLIRGeneratorTool().asAllocatable(gen.operand(value))));
+    }
+}

--- a/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/StandardGraphBuilderPlugins.java	Wed Nov 18 15:53:20 2015 +0100
+++ b/graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/StandardGraphBuilderPlugins.java	Wed Nov 18 15:51:04 2015 +0100
@@ -66,6 +66,7 @@
 import com.oracle.graal.nodes.calc.UnsignedDivNode;
 import com.oracle.graal.nodes.calc.UnsignedRemNode;
 import com.oracle.graal.nodes.calc.ZeroExtendNode;
+import com.oracle.graal.nodes.debug.BindToRegisterNode;
 import com.oracle.graal.nodes.debug.BlackholeNode;
 import com.oracle.graal.nodes.debug.ControlFlowAnchorNode;
 import com.oracle.graal.nodes.debug.OpaqueNode;
@@ -668,10 +669,17 @@
             }
         };
 
+        InvocationPlugin bindToRegisterPlugin = new InvocationPlugin() {
+            public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver receiver, ValueNode value) {
+                b.add(new BindToRegisterNode(value));
+                return true;
+            }
+        };
         for (JavaKind kind : JavaKind.values()) {
             if ((kind.isPrimitive() && kind != JavaKind.Void) || kind == JavaKind.Object) {
                 Class<?> javaClass = kind == JavaKind.Object ? Object.class : kind.toJavaClass();
                 r.register1("blackhole", javaClass, blackholePlugin);
+                r.register1("bindToRegister", javaClass, bindToRegisterPlugin);
 
                 r.register1("opaque", javaClass, new InvocationPlugin() {
                     public boolean apply(GraphBuilderContext b, ResolvedJavaMethod targetMethod, Receiver receiver, ValueNode value) {