--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements/src/org/graalvm/compiler/replacements/nodes/arithmetic/IntegerAddExactOverflowNode.java	Tue Mar 12 19:17:42 2019 +0100
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 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 org.graalvm.compiler.replacements.nodes.arithmetic;
+
+import jdk.vm.ci.meta.JavaConstant;
+import jdk.vm.ci.meta.JavaKind;
+import org.graalvm.compiler.core.common.type.IntegerStamp;
+import org.graalvm.compiler.core.common.type.Stamp;
+import org.graalvm.compiler.graph.NodeClass;
+import org.graalvm.compiler.graph.spi.Canonicalizable.BinaryCommutative;
+import org.graalvm.compiler.graph.spi.CanonicalizerTool;
+import org.graalvm.compiler.graph.spi.Simplifiable;
+import org.graalvm.compiler.nodeinfo.NodeInfo;
+import org.graalvm.compiler.nodes.AbstractBeginNode;
+import org.graalvm.compiler.nodes.LogicConstantNode;
+import org.graalvm.compiler.nodes.NodeView;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.calc.BinaryNode;
+
+import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2;
+import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_2;
+
+@NodeInfo(cycles = CYCLES_2, size = SIZE_2)
+public final class IntegerAddExactOverflowNode extends IntegerExactOverflowNode implements Simplifiable, BinaryCommutative<ValueNode> {
+    public static final NodeClass<IntegerAddExactOverflowNode> TYPE = NodeClass.create(IntegerAddExactOverflowNode.class);
+
+    public IntegerAddExactOverflowNode(ValueNode x, ValueNode y) {
+        super(TYPE, x, y);
+    }
+
+    @Override
+    public ValueNode canonical(CanonicalizerTool tool, ValueNode forX, ValueNode forY) {
+        if (forX.isConstant() && !forY.isConstant()) {
+            return new IntegerAddExactOverflowNode(forY, forX).canonical(tool);
+        }
+        if (forX.isConstant() && forY.isConstant()) {
+            return canonicalXYconstant(forX, forY);
+        } else if (forY.isConstant()) {
+            long c = forY.asJavaConstant().asLong();
+            if (c == 0) {
+                return LogicConstantNode.forBoolean(false);
+            }
+        }
+        if (!IntegerStamp.addCanOverflow((IntegerStamp) forX.stamp(NodeView.DEFAULT), (IntegerStamp) forY.stamp(NodeView.DEFAULT))) {
+            return LogicConstantNode.forBoolean(false);
+        }
+        return this;
+    }
+
+    private static LogicConstantNode canonicalXYconstant(ValueNode forX, ValueNode forY) {
+        JavaConstant xConst = forX.asJavaConstant();
+        JavaConstant yConst = forY.asJavaConstant();
+        assert xConst.getJavaKind() == yConst.getJavaKind();
+        try {
+            if (xConst.getJavaKind() == JavaKind.Int) {
+                Math.addExact(xConst.asInt(), yConst.asInt());
+            } else {
+                assert xConst.getJavaKind() == JavaKind.Long;
+                Math.addExact(xConst.asLong(), yConst.asLong());
+            }
+        } catch (ArithmeticException ex) {
+            // Always overflows
+            return LogicConstantNode.forBoolean(true);
+        }
+        // Never overflows
+        return LogicConstantNode.forBoolean(false);
+    }
+
+    @Override
+    protected IntegerExactArithmeticSplitNode createSplit(Stamp splitStamp, AbstractBeginNode next, AbstractBeginNode overflow) {
+        return new IntegerAddExactSplitNode(splitStamp, x, y, next, overflow);
+    }
+
+    @Override
+    protected Class<? extends BinaryNode> getCoupledType() {
+        return IntegerAddExactNode.class;
+    }
+}