--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/alloc/OutOfRegistersException.java	2017-02-15 17:05:25.735504584 -0800
@@ -0,0 +1,80 @@
+/*
+ * 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 org.graalvm.compiler.lir.alloc;
+
+import static org.graalvm.compiler.core.common.GraalOptions.RegisterPressure;
+import static org.graalvm.compiler.core.common.alloc.RegisterAllocationConfig.ALL_REGISTERS;
+
+import org.graalvm.compiler.lir.BailoutAndRestartBackendException;
+import org.graalvm.compiler.lir.phases.LIRSuites;
+import org.graalvm.compiler.options.OptionValue;
+import org.graalvm.compiler.options.OptionValue.OverrideScope;
+
+/**
+ * Thrown if the register allocator runs out of registers. This should never happen in normal mode.
+ */
+public final class OutOfRegistersException extends BailoutAndRestartBackendException {
+
+    private static final long serialVersionUID = -3479786650143432195L;
+
+    private final String description;
+
+    public OutOfRegistersException(String msg) {
+        super(msg);
+        this.description = "";
+    }
+
+    public OutOfRegistersException(Throwable cause, String msg) {
+        super(cause, msg);
+        this.description = "";
+    }
+
+    public OutOfRegistersException(String msg, String description) {
+        super(msg);
+        this.description = description;
+    }
+
+    public OutOfRegistersException(Throwable cause, String msg, String description) {
+        super(cause, msg);
+        this.description = description;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    @Override
+    public boolean shouldRestart() {
+        return RegisterPressure.getValue() != null && !RegisterPressure.getValue().equals(ALL_REGISTERS);
+    }
+
+    @Override
+    public OverrideScope getOverrideScope() {
+        return OptionValue.override(RegisterPressure, ALL_REGISTERS);
+    }
+
+    @Override
+    public LIRSuites updateLIRSuites(LIRSuites lirSuites) {
+        return lirSuites;
+    }
+}