--- /dev/null	2016-04-25 12:48:48.957765978 +0300
+++ new/test/compiler/jvmci/jdk.vm.ci.hotspot.test/src/jdk/vm/ci/hotspot/test/MemoryAccessProviderTest.java	2016-05-06 17:27:27.470014790 +0300
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2016, 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.
+ *
+ */
+
+/*
+ * @test
+ * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9" | os.simpleArch == "aarch64")
+ * @library /testlibrary /test/lib /compiler/jvmci/jdk.vm.ci.hotspot.test/src
+ * @modules jdk.vm.ci/jdk.vm.ci.meta
+ *          jdk.vm.ci/jdk.vm.ci.common
+ *          jdk.vm.ci/jdk.vm.ci.runtime
+ *          jdk.vm.ci/jdk.vm.ci.hotspot
+ * @run testng/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
+ *      jdk.vm.ci.hotspot.test.MemoryAccessProviderTest
+ */
+
+package jdk.vm.ci.hotspot.test;
+
+import jdk.vm.ci.meta.Constant;
+import org.testng.annotations.Test;
+import org.testng.Assert;
+import jdk.vm.ci.meta.JavaConstant;
+import jdk.vm.ci.meta.JavaKind;
+import jdk.vm.ci.meta.MemoryAccessProvider;
+import jdk.vm.ci.runtime.JVMCI;
+
+public class MemoryAccessProviderTest {
+    private static final MemoryAccessProvider PROVIDER = JVMCI.getRuntime()
+            .getHostJVMCIBackend()
+            .getConstantReflection()
+            .getMemoryAccessProvider();
+
+    @Test(dataProvider = "positivePrimitive", dataProviderClass = MemoryAccessProviderData.class)
+    public void testPositiveReadUnsafeConstant(JavaKind kind, JavaConstant base,
+            Long offset, Object expected, int bitsCount /* not used */) {
+        Assert.assertEquals(PROVIDER.readUnsafeConstant(kind, base, offset),
+                expected, "Failed to read constant");
+    }
+
+    @Test(dataProvider = "positivePrimitive", dataProviderClass = MemoryAccessProviderData.class,
+            expectedExceptions = {IllegalArgumentException.class})
+    public void testReadUnsafeConstantNullBase(JavaKind kind,
+            JavaConstant base, Long offset, Object expected, int bitsCount /* not used */) {
+        PROVIDER.readUnsafeConstant(kind, null, offset);
+    }
+
+    @Test(dataProvider = "positivePrimitive", dataProviderClass = MemoryAccessProviderData.class,
+            expectedExceptions = {IllegalArgumentException.class})
+    public void testNegativeReadUnsafeConstantNullKind(JavaKind kind, JavaConstant base,
+            Long offset, Object expected /* not used */, int bitsCount /* not used */) {
+        Assert.assertNull(PROVIDER.readUnsafeConstant(null, base, offset), "Expected null return");
+    }
+
+    @Test(dataProvider = "negative", dataProviderClass = MemoryAccessProviderData.class,
+            expectedExceptions = {IllegalArgumentException.class})
+    public void testNegativeReadUnsafeConstant(JavaKind kind, JavaConstant base) {
+        PROVIDER.readUnsafeConstant(kind, base, 0L);
+    }
+
+    @Test(dataProvider = "positivePrimitive", dataProviderClass = MemoryAccessProviderData.class)
+    public void testPositiveReadPrimitiveConstant(JavaKind kind, Constant base,
+            Long offset, Object expected, int bitsCount) {
+        Assert.assertEquals(PROVIDER.readPrimitiveConstant(kind, base, offset,
+                bitsCount), expected, "Failed to read constant");
+    }
+
+    @Test(dataProvider = "positivePrimitive", dataProviderClass = MemoryAccessProviderData.class,
+            expectedExceptions = {IllegalArgumentException.class})
+    public void testReadPrimitiveConstantNullBase(JavaKind kind,
+            Constant base, Long offset, Object expected, int bitsCount) {
+        Assert.assertNull(PROVIDER.readPrimitiveConstant(kind, null, offset, bitsCount),
+                "Unexpected value for null base");
+    }
+
+    @Test(dataProvider = "negative", dataProviderClass = MemoryAccessProviderData.class,
+            expectedExceptions = {IllegalArgumentException.class})
+    public void testNegativeReadPrimitiveConstant(JavaKind kind, Constant base) {
+        PROVIDER.readPrimitiveConstant(kind, base, 0L, kind == null ? 0 : kind.getBitCount());
+    }
+
+    @Test(dataProvider = "positiveObject", dataProviderClass = MemoryAccessProviderData.class,
+            expectedExceptions = {IllegalArgumentException.class})
+    public void testObjectReadPrimitiveConstant(JavaKind kind, Constant base,
+            Long offset /* not used */, Object expected /* not used */, int bitsCount) {
+        PROVIDER.readPrimitiveConstant(kind, base, 0L, bitsCount);
+    }
+
+    @Test(dataProvider = "positivePrimitive", dataProviderClass = MemoryAccessProviderData.class,
+            expectedExceptions = {IllegalArgumentException.class})
+    public void testReadPrimitiveConstantLessBits(JavaKind kind, Constant base,
+            Long offset, Object expected /* not used */, int bitsCount /* not used */) {
+        PROVIDER.readPrimitiveConstant(kind, base, offset, bitsCount - 1);
+    }
+
+    @Test(dataProvider = "positiveObject", dataProviderClass = MemoryAccessProviderData.class)
+    public void testPositiveReadObjectConstant(JavaKind kind /* not used */, Constant base,
+            Long offset, Object expected, int bitsCount /* not used */) {
+        Assert.assertEquals(PROVIDER.readObjectConstant(base, offset), expected,
+                "Unexpected result");
+    }
+
+    @Test(dataProvider = "positiveObject", dataProviderClass = MemoryAccessProviderData.class)
+    public void testNegativeReadObjectConstantNullBase(JavaKind kind /* not used */,
+            Constant base, Long offset, Object expected /* not used */, int bitsCount /* not used */) {
+        Assert.assertNull(PROVIDER.readObjectConstant(null, offset), "Unexpected return");
+    }
+
+    @Test(dataProvider = "positiveObject", dataProviderClass = MemoryAccessProviderData.class)
+    public void testNegativeReadObjectConstantWrongOffset(JavaKind kind /* not used */,
+            Constant base, Long offset, Object expected /* not used */, int bitsCount /* not used */) {
+        Assert.assertNull(PROVIDER.readObjectConstant(base, offset + 1), "Expected null");
+    }
+
+    @Test(dataProvider = "positivePrimitive", dataProviderClass = MemoryAccessProviderData.class)
+    public void testNegativeReadObjectConstantPrimitiveBase(JavaKind kind /* not used*/,
+            Constant base, Long offset, Object expected /* not used */, int bitsCount /* not used */) {
+        Assert.assertNull(PROVIDER.readObjectConstant(base, offset), "Expected null");
+    }
+}