src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/GraalCompiler.java
--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/GraalCompiler.java Fri Feb 02 10:37:48 2018 -0500
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/GraalCompiler.java Fri Feb 02 17:28:17 2018 -0800
@@ -25,6 +25,7 @@
import java.util.Collection;
import java.util.List;
+import org.graalvm.collections.EconomicSet;
import org.graalvm.compiler.code.CompilationResult;
import org.graalvm.compiler.core.LIRGenerationPhase.LIRGenerationContext;
import org.graalvm.compiler.core.common.GraalOptions;
@@ -64,7 +65,6 @@
import org.graalvm.compiler.phases.tiers.Suites;
import org.graalvm.compiler.phases.tiers.TargetProvider;
import org.graalvm.compiler.phases.util.Providers;
-import org.graalvm.util.EconomicSet;
import jdk.vm.ci.code.RegisterConfig;
import jdk.vm.ci.code.TargetDescription;