--- /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/ArrayRegionEqualsNode.java	Thu Nov 15 09:04:07 2018 -0800
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2013, 2016, 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 jdk.vm.ci.meta.JavaKind;
+import jdk.vm.ci.meta.Value;
+import org.graalvm.compiler.core.common.type.StampFactory;
+import org.graalvm.compiler.graph.NodeClass;
+import org.graalvm.compiler.nodeinfo.NodeCycles;
+import org.graalvm.compiler.nodeinfo.NodeInfo;
+import org.graalvm.compiler.nodeinfo.NodeSize;
+import org.graalvm.compiler.nodes.FixedWithNextNode;
+import org.graalvm.compiler.nodes.NamedLocationIdentity;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.ValueNodeUtil;
+import org.graalvm.compiler.nodes.memory.MemoryAccess;
+import org.graalvm.compiler.nodes.memory.MemoryNode;
+import org.graalvm.compiler.nodes.spi.LIRLowerable;
+import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
+import jdk.internal.vm.compiler.word.LocationIdentity;
+import jdk.internal.vm.compiler.word.Pointer;
+
+import static org.graalvm.compiler.nodeinfo.InputType.Memory;
+
+// JaCoCo Exclude
+
+/**
+ * Compares two array regions with a given length.
+ */
+@NodeInfo(cycles = NodeCycles.CYCLES_UNKNOWN, size = NodeSize.SIZE_128)
+public final class ArrayRegionEqualsNode extends FixedWithNextNode implements LIRLowerable, MemoryAccess {
+
+    public static final NodeClass<ArrayRegionEqualsNode> TYPE = NodeClass.create(ArrayRegionEqualsNode.class);
+
+    /** {@link JavaKind} of the arrays to compare. */
+    private final JavaKind kind;
+
+    /** Pointer to first array region to be tested for equality. */
+    @Input private ValueNode array1;
+
+    /** Pointer to second array region to be tested for equality. */
+    @Input private ValueNode array2;
+
+    /** Length of the array region. */
+    @Input private ValueNode length;
+
+    @OptionalInput(Memory) private MemoryNode lastLocationAccess;
+
+    public ArrayRegionEqualsNode(ValueNode array1, ValueNode array2, ValueNode length, @ConstantNodeParameter JavaKind kind) {
+        super(TYPE, StampFactory.forKind(JavaKind.Boolean));
+        this.kind = kind;
+        this.array1 = array1;
+        this.array2 = array2;
+        this.length = length;
+    }
+
+    @NodeIntrinsic
+    public static native boolean regionEquals(Pointer array1, Pointer array2, int length, @ConstantNodeParameter JavaKind kind);
+
+    @Override
+    public void generate(NodeLIRBuilderTool gen) {
+        int constantLength = -1;
+        if (length.isConstant()) {
+            constantLength = length.asJavaConstant().asInt();
+        }
+        Value result = gen.getLIRGeneratorTool().emitArrayEquals(kind, gen.operand(array1), gen.operand(array2), gen.operand(length), constantLength, true);
+        gen.setResult(this, result);
+    }
+
+    @Override
+    public LocationIdentity getLocationIdentity() {
+        return NamedLocationIdentity.getArrayLocation(kind);
+    }
+
+    @Override
+    public MemoryNode getLastLocationAccess() {
+        return lastLocationAccess;
+    }
+
+    @Override
+    public void setLastLocationAccess(MemoryNode lla) {
+        updateUsages(ValueNodeUtil.asNode(lastLocationAccess), ValueNodeUtil.asNode(lla));
+        lastLocationAccess = lla;
+    }
+}