--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.lir.test/src/com/oracle/graal/lir/test/GenericValueMapTest.java	Mon Jul 13 15:23:28 2015 +0200
@@ -0,0 +1,78 @@
+/*
+ * 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.lir.test;
+
+import static org.junit.Assert.*;
+import jdk.internal.jvmci.code.*;
+import jdk.internal.jvmci.code.Register.RegisterCategory;
+import jdk.internal.jvmci.meta.*;
+
+import org.junit.*;
+
+import com.oracle.graal.lir.*;
+import com.oracle.graal.lir.utils.*;
+
+public class GenericValueMapTest {
+
+    @Test
+    public void run0() {
+        RegisterCategory cat = new RegisterCategory("regs");
+
+        RegisterValue reg = new Register(0, 0, "reg0", cat).asValue();
+        Variable var = new Variable(LIRKind.value(Kind.Long), 0);
+        Object obj0 = new Object();
+        Object obj1 = new Object();
+
+        GenericValueMap<Object> map = new GenericValueMap<>();
+
+        assertNull(map.get(reg));
+        assertNull(map.get(var));
+
+        map.put(reg, obj0);
+        map.put(var, obj1);
+
+        assertEquals(obj0, map.get(reg));
+        assertEquals(obj1, map.get(var));
+
+        map.remove(reg);
+        map.remove(var);
+
+        assertNull(map.get(reg));
+        assertNull(map.get(var));
+
+        map.put(reg, obj0);
+        map.put(var, obj1);
+
+        map.put(var, obj0);
+        map.put(reg, obj1);
+
+        assertEquals(obj1, map.get(reg));
+        assertEquals(obj0, map.get(var));
+
+        map.put(reg, null);
+        map.put(var, null);
+
+        assertNull(map.get(reg));
+        assertNull(map.get(var));
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/utils/GenericValueMap.java	Mon Jul 13 15:23:28 2015 +0200
@@ -0,0 +1,54 @@
+/*
+ * 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.lir.utils;
+
+import java.util.*;
+
+import jdk.internal.jvmci.meta.*;
+
+import com.oracle.graal.compiler.common.*;
+
+public final class GenericValueMap<T> extends ValueMap<Value, T> {
+
+    private final Map<Value, T> data;
+
+    public GenericValueMap() {
+        data = CollectionsFactory.newMap();
+    }
+
+    @Override
+    public T get(Value value) {
+        return data.get(value);
+    }
+
+    @Override
+    public void remove(Value value) {
+        data.remove(value);
+    }
+
+    @Override
+    public void put(Value value, T object) {
+        data.put(value, object);
+    }
+
+}