*** old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/phases/EconomyLowTier.java	Mon Mar 20 17:37:47 2017
--- new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/phases/EconomyLowTier.java	Mon Mar 20 17:37:47 2017

*** 23,44 ****
--- 23,45 ----
  package org.graalvm.compiler.core.phases;
  
  import static org.graalvm.compiler.core.common.GraalOptions.ImmutableCode;
  
  import org.graalvm.compiler.nodes.spi.LoweringTool;
+ import org.graalvm.compiler.options.OptionValues;
  import org.graalvm.compiler.phases.PhaseSuite;
  import org.graalvm.compiler.phases.common.CanonicalizerPhase;
  import org.graalvm.compiler.phases.common.ExpandLogicPhase;
  import org.graalvm.compiler.phases.common.LoweringPhase;
  import org.graalvm.compiler.phases.schedule.SchedulePhase;
  import org.graalvm.compiler.phases.tiers.LowTierContext;
  
  public class EconomyLowTier extends PhaseSuite<LowTierContext> {
  
!     public EconomyLowTier(OptionValues options) {
          CanonicalizerPhase canonicalizer = new CanonicalizerPhase();
!         if (ImmutableCode.getValue(options)) {
              canonicalizer.disableReadCanonicalization();
          }
  
          appendPhase(new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.LOW_TIER));