--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/ea/UnsafeEATest.java	Sat Aug 05 03:05:06 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/ea/UnsafeEATest.java	Fri Aug 04 19:59:33 2017 -0700
@@ -38,6 +38,10 @@
     private static final long fieldOffset1;
     private static final long fieldOffset2;
 
+    private static final long byteArrayBaseOffset;
+    private static final long intArrayBaseOffset;
+    private static final long longArrayBaseOffset;
+
     static {
         try {
             long localFieldOffset1 = UNSAFE.objectFieldOffset(TestClassInt.class.getField("x"));
@@ -51,6 +55,9 @@
                 fieldOffset2 = UNSAFE.objectFieldOffset(TestClassInt.class.getField("z"));
             }
             assert fieldOffset2 == fieldOffset1 + 4;
+            byteArrayBaseOffset = UNSAFE.arrayBaseOffset(byte[].class);
+            intArrayBaseOffset = UNSAFE.arrayBaseOffset(int[].class);
+            longArrayBaseOffset = UNSAFE.arrayBaseOffset(long[].class);
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
@@ -195,4 +202,77 @@
         }
         return x;
     }
+
+    public static int testWriteIntToByteArraySnippet() {
+        byte[] array = new byte[4];
+        UNSAFE.putInt(array, byteArrayBaseOffset, 0x01020304);
+        return array[0];
+    }
+
+    @Test
+    public void testWriteIntToByteArray() {
+        test("testWriteIntToByteArraySnippet");
+    }
+
+    public static byte testWriteSignedExtendedByteToByteArraySnippet(byte b) {
+        byte[] array = new byte[4];
+        array[0] = 0x01;
+        array[1] = 0x02;
+        array[2] = 0x03;
+        array[3] = 0x04;
+        UNSAFE.putInt(array, byteArrayBaseOffset, b);
+        return array[3];
+    }
+
+    @Test
+    public void testWriteSignedExtendedByteToByteArray() {
+        test("testWriteSignedExtendedByteToByteArraySnippet", (byte) 0);
+    }
+
+    public static int testWriteLongToIntArraySnippet() {
+        int[] array = new int[2];
+        UNSAFE.putLong(array, intArrayBaseOffset, 0x0102030405060708L);
+        return array[0];
+    }
+
+    @Test
+    public void testWriteLongToIntArray() {
+        test("testWriteLongToIntArraySnippet");
+    }
+
+    public static int testWriteByteToIntArraySnippet() {
+        int[] array = new int[1];
+        array[0] = 0x01020304;
+        UNSAFE.putByte(array, intArrayBaseOffset, (byte) 0x05);
+        return array[0];
+    }
+
+    @Test
+    public void testWriteByteToIntArray() {
+        test("testWriteByteToIntArraySnippet");
+    }
+
+    public static long testWriteIntToLongArraySnippet() {
+        long[] array = new long[1];
+        array[0] = 0x0102030405060708L;
+        UNSAFE.putInt(array, longArrayBaseOffset, 0x04030201);
+        return array[0];
+    }
+
+    @Test
+    public void testWriteIntToLongArray() {
+        test("testWriteIntToLongArraySnippet");
+    }
+
+    public static float testWriteFloatToIntArraySnippet() {
+        float[] array = new float[1];
+        UNSAFE.putInt(array, intArrayBaseOffset, Float.floatToRawIntBits(0.5f));
+        return array[0];
+    }
+
+    @Test
+    public void testWriteFloatToIntArray() {
+        test("testWriteFloatToIntArraySnippet");
+    }
+
 }