--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/backend/AllocatorTest.java	2017-02-15 16:57:51.644658392 -0800
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2013, 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.core.test.backend;
+
+import java.util.HashSet;
+
+import jdk.vm.ci.code.Register;
+import jdk.vm.ci.code.ValueUtil;
+import jdk.vm.ci.meta.Value;
+
+import org.junit.Assert;
+
+import org.graalvm.compiler.core.common.cfg.AbstractBlockBase;
+import org.graalvm.compiler.debug.Debug;
+import org.graalvm.compiler.debug.Debug.Scope;
+import org.graalvm.compiler.lir.LIR;
+import org.graalvm.compiler.lir.LIRInstruction;
+import org.graalvm.compiler.lir.LIRValueUtil;
+import org.graalvm.compiler.lir.StandardOp.ValueMoveOp;
+import org.graalvm.compiler.lir.ValueProcedure;
+import org.graalvm.compiler.nodes.StructuredGraph;
+import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
+
+public class AllocatorTest extends BackendTest {
+
+    @SuppressWarnings("try")
+    protected void testAllocation(String snippet, final int expectedRegisters, final int expectedRegRegMoves, final int expectedSpillMoves) {
+        final StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES);
+        try (Scope s = Debug.scope("AllocatorTest", graph, graph.method(), getCodeCache())) {
+            final RegisterStats stats = new RegisterStats(getLIRGenerationResult(graph).getLIR());
+            try (Scope s2 = Debug.scope("Assertions", stats.lir)) {
+                Assert.assertEquals("register count", expectedRegisters, stats.registers.size());
+                Assert.assertEquals("reg-reg moves", expectedRegRegMoves, stats.regRegMoves);
+                Assert.assertEquals("spill moves", expectedSpillMoves, stats.spillMoves);
+            } catch (Throwable e) {
+                throw Debug.handle(e);
+            }
+        } catch (Throwable e) {
+            throw Debug.handle(e);
+        }
+    }
+
+    private class RegisterStats {
+
+        public final LIR lir;
+        public HashSet<Register> registers = new HashSet<>();
+        public int regRegMoves;
+        public int spillMoves;
+
+        RegisterStats(LIR lir) {
+            this.lir = lir;
+
+            for (AbstractBlockBase<?> block : lir.codeEmittingOrder()) {
+                if (block == null) {
+                    continue;
+                }
+                for (LIRInstruction instr : lir.getLIRforBlock(block)) {
+                    collectStats(instr);
+                }
+            }
+        }
+
+        private ValueProcedure collectStatsProc = (value, mode, flags) -> {
+            if (ValueUtil.isRegister(value)) {
+                final Register reg = ValueUtil.asRegister(value);
+                registers.add(reg);
+            }
+            return value;
+        };
+
+        private void collectStats(final LIRInstruction instr) {
+            instr.forEachOutput(collectStatsProc);
+
+            if (instr instanceof ValueMoveOp) {
+                ValueMoveOp move = (ValueMoveOp) instr;
+                Value def = move.getResult();
+                Value use = move.getInput();
+                if (ValueUtil.isRegister(def)) {
+                    if (ValueUtil.isRegister(use)) {
+                        regRegMoves++;
+                    }
+                } else if (LIRValueUtil.isStackSlotValue(def)) {
+                    spillMoves++;
+                }
+            }
+        }
+    }
+}