diff -r 5bce1b7e7800 -r 47f19ff9903c src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/arraycopy/ArrayCopySnippets.java
--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/arraycopy/ArrayCopySnippets.java	Fri Feb 02 10:37:48 2018 -0500
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/arraycopy/ArrayCopySnippets.java	Fri Feb 02 17:28:17 2018 -0800
@@ -40,6 +40,7 @@
 import java.lang.reflect.Method;
 import java.util.EnumMap;
 
+import org.graalvm.collections.UnmodifiableEconomicMap;
 import org.graalvm.compiler.api.directives.GraalDirectives;
 import org.graalvm.compiler.api.replacements.Fold;
 import org.graalvm.compiler.api.replacements.Snippet;
@@ -76,7 +77,6 @@
 import org.graalvm.compiler.replacements.nodes.BasicArrayCopyNode;
 import org.graalvm.compiler.replacements.nodes.ExplodeLoopNode;
 import org.graalvm.compiler.word.Word;
-import org.graalvm.util.UnmodifiableEconomicMap;
 import org.graalvm.word.LocationIdentity;
 import org.graalvm.word.WordFactory;