--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/IndirectHotSpotObjectConstantImpl.java	Wed May 01 12:31:29 2019 -0700
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2018, 2019, 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 jdk.vm.ci.hotspot;
+
+import static jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.runtime;
+
+import jdk.vm.ci.meta.JavaConstant;
+
+final class IndirectHotSpotObjectConstantImpl extends HotSpotObjectConstantImpl {
+    /**
+     * An object handle in {@code JVMCI::_jvmci_handles}.
+     */
+    final long objectHandle;
+    private int hashCode;
+
+    final IndirectHotSpotObjectConstantImpl base;
+
+    @VMEntryPoint
+    private IndirectHotSpotObjectConstantImpl(long objectHandle, boolean compressed, boolean skipRegister) {
+        super(compressed);
+        assert objectHandle != 0 && UnsafeAccess.UNSAFE.getLong(objectHandle) != 0;
+        this.objectHandle = objectHandle;
+        this.base = null;
+        if (!skipRegister) {
+            HandleCleaner.create(this, objectHandle);
+        }
+    }
+
+    private IndirectHotSpotObjectConstantImpl(IndirectHotSpotObjectConstantImpl base, boolean compressed) {
+        super(compressed);
+        // This is a variant of an original object that only varies in compress vs uncompressed.
+        // Instead of creating a new handle, reference that object and objectHandle.
+        this.objectHandle = base.objectHandle;
+        // There should only be on level of indirection to the base object.
+        assert base.base == null || base.base.base == null;
+        this.base = base.base != null ? base.base : base;
+    }
+
+    @Override
+    public JavaConstant compress() {
+        assert !compressed;
+        return new IndirectHotSpotObjectConstantImpl(this, true);
+    }
+
+    @Override
+    public JavaConstant uncompress() {
+        assert compressed;
+        return new IndirectHotSpotObjectConstantImpl(this, false);
+    }
+
+    @Override
+    public int getIdentityHashCode() {
+        int hash = hashCode;
+        if (hash == 0) {
+            hash = runtime().compilerToVm.getIdentityHashCode(this);
+            if (hash == 0) {
+                hash = 31;
+            }
+            hashCode = hash;
+        }
+        return hash;
+    }
+}