--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/phases/LIRPhaseSuite.java	2016-12-09 00:54:28.704510168 -0800
@@ -0,0 +1,109 @@
+/*
+ * 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.phases;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.ListIterator;
+
+import org.graalvm.compiler.lir.gen.LIRGenerationResult;
+
+import jdk.vm.ci.code.TargetDescription;
+
+public class LIRPhaseSuite<C> extends LIRPhase<C> {
+    private List<LIRPhase<C>> phases;
+    private boolean immutable;
+
+    public LIRPhaseSuite() {
+        phases = new ArrayList<>();
+    }
+
+    /**
+     * Add a new phase at the beginning of this suite.
+     */
+    public final void prependPhase(LIRPhase<C> phase) {
+        phases.add(0, phase);
+    }
+
+    /**
+     * Add a new phase at the end of this suite.
+     */
+    public final void appendPhase(LIRPhase<C> phase) {
+        phases.add(phase);
+    }
+
+    public final ListIterator<LIRPhase<C>> findPhase(Class<? extends LIRPhase<C>> phaseClass) {
+        ListIterator<LIRPhase<C>> it = phases.listIterator();
+        if (findNextPhase(it, phaseClass)) {
+            return it;
+        } else {
+            return null;
+        }
+    }
+
+    public final <T extends LIRPhase<C>> T findPhaseInstance(Class<T> phaseClass) {
+        ListIterator<LIRPhase<C>> it = phases.listIterator();
+        while (it.hasNext()) {
+            LIRPhase<C> phase = it.next();
+            if (phaseClass.isInstance(phase)) {
+                return phaseClass.cast(phase);
+            }
+        }
+        return null;
+    }
+
+    public static <C> boolean findNextPhase(ListIterator<LIRPhase<C>> it, Class<? extends LIRPhase<C>> phaseClass) {
+        while (it.hasNext()) {
+            LIRPhase<C> phase = it.next();
+            if (phaseClass.isInstance(phase)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    protected final void run(TargetDescription target, LIRGenerationResult lirGenRes, C context) {
+        for (LIRPhase<C> phase : phases) {
+            phase.apply(target, lirGenRes, context);
+        }
+    }
+
+    public LIRPhaseSuite<C> copy() {
+        LIRPhaseSuite<C> suite = new LIRPhaseSuite<>();
+        suite.phases.addAll(phases);
+        return suite;
+    }
+
+    public boolean isImmutable() {
+        return immutable;
+    }
+
+    public synchronized void setImmutable() {
+        if (!immutable) {
+            phases = Collections.unmodifiableList(phases);
+            immutable = true;
+        }
+    }
+}