--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/AssertionNode.java	2016-12-09 00:57:06.581469161 -0800
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2014, 2014, 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.replacements.nodes;
+
+import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN;
+import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_UNKNOWN;
+
+import org.graalvm.compiler.core.common.type.StampFactory;
+import org.graalvm.compiler.debug.GraalError;
+import org.graalvm.compiler.graph.Node;
+import org.graalvm.compiler.graph.NodeClass;
+import org.graalvm.compiler.graph.spi.Canonicalizable;
+import org.graalvm.compiler.graph.spi.CanonicalizerTool;
+import org.graalvm.compiler.nodeinfo.NodeInfo;
+import org.graalvm.compiler.nodes.FixedWithNextNode;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.spi.LIRLowerable;
+import org.graalvm.compiler.nodes.spi.Lowerable;
+import org.graalvm.compiler.nodes.spi.LoweringTool;
+import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
+
+/**
+ * Assertion nodes will go away as soon as the value evaluates to true. Compile-time assertions will
+ * fail if this has not happened by the time the node is lowered to LIR, while runtime assertions
+ * may need to insert a check.
+ */
+@NodeInfo(cycles = CYCLES_UNKNOWN, size = SIZE_UNKNOWN)
+public final class AssertionNode extends FixedWithNextNode implements Lowerable, Canonicalizable, LIRLowerable {
+
+    public static final NodeClass<AssertionNode> TYPE = NodeClass.create(AssertionNode.class);
+    @Input ValueNode value;
+
+    protected final boolean compileTimeAssertion;
+    protected final String message;
+
+    public AssertionNode(boolean compileTimeAssertion, ValueNode value, String message) {
+        super(TYPE, StampFactory.forVoid());
+        this.value = value;
+        this.compileTimeAssertion = compileTimeAssertion;
+        this.message = message;
+    }
+
+    public ValueNode value() {
+        return value;
+    }
+
+    public String message() {
+        return message;
+    }
+
+    @Override
+    public Node canonical(CanonicalizerTool tool) {
+        if (value.isConstant() && value.asJavaConstant().asInt() != 0) {
+            return null;
+        }
+        /*
+         * Assertions with a constant "false" value do not immediately cause an error, since they
+         * may be unreachable and could thus be removed by later optimizations.
+         */
+        return this;
+    }
+
+    @Override
+    public void lower(LoweringTool tool) {
+        if (!compileTimeAssertion) {
+            tool.getLowerer().lower(this, tool);
+        }
+    }
+
+    @Override
+    public void generate(NodeLIRBuilderTool generator) {
+        assert compileTimeAssertion;
+        if (value.isConstant()) {
+            if (value.asJavaConstant().asInt() == 0) {
+                throw new GraalError("%s: failed compile-time assertion: %s", this, message);
+            }
+        } else {
+            throw new GraalError("%s: failed compile-time assertion (value %s): %s", this, value, message);
+        }
+    }
+
+    @NodeIntrinsic
+    public static native void assertion(@ConstantNodeParameter boolean compileTimeAssertion, boolean value, @ConstantNodeParameter String message);
+}