--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/phases/MidTier.java	Thu Oct 17 20:27:44 2019 +0100
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/phases/MidTier.java	Thu Oct 17 20:53:35 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 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
@@ -24,9 +24,6 @@
 
 package org.graalvm.compiler.core.phases;
 
-import static org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations.GuardTargets;
-import static org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations.NonDeoptGuardTargets;
-import static org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations.Options.MitigateSpeculativeExecutionAttacks;
 import static org.graalvm.compiler.core.common.GraalOptions.ConditionalElimination;
 import static org.graalvm.compiler.core.common.GraalOptions.ImmutableCode;
 import static org.graalvm.compiler.core.common.GraalOptions.OptDeoptimizationGrouping;
@@ -35,6 +32,9 @@
 import static org.graalvm.compiler.core.common.GraalOptions.PartialUnroll;
 import static org.graalvm.compiler.core.common.GraalOptions.ReassociateInvariants;
 import static org.graalvm.compiler.core.common.GraalOptions.VerifyHeapAtReturn;
+import static org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations.GuardTargets;
+import static org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations.NonDeoptGuardTargets;
+import static org.graalvm.compiler.core.common.SpeculativeExecutionAttacksMitigations.Options.MitigateSpeculativeExecutionAttacks;
 
 import org.graalvm.compiler.loop.DefaultLoopPolicies;
 import org.graalvm.compiler.loop.LoopPolicies;
@@ -55,7 +55,9 @@
 import org.graalvm.compiler.phases.common.LockEliminationPhase;
 import org.graalvm.compiler.phases.common.LoopSafepointInsertionPhase;
 import org.graalvm.compiler.phases.common.LoweringPhase;
+import org.graalvm.compiler.phases.common.OptimizeDivPhase;
 import org.graalvm.compiler.phases.common.VerifyHeapAtReturnPhase;
+import org.graalvm.compiler.phases.common.WriteBarrierAdditionPhase;
 import org.graalvm.compiler.phases.tiers.MidTierContext;
 
 public class MidTier extends PhaseSuite<MidTierContext> {
@@ -92,6 +94,8 @@
 
         appendPhase(new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.MID_TIER));
 
+        appendPhase(new OptimizeDivPhase());
+
         appendPhase(new FrameStateAssignmentPhase());
 
         LoopPolicies loopPolicies = createLoopPolicies();
@@ -109,6 +113,8 @@
         }
 
         appendPhase(canonicalizer);
+
+        appendPhase(new WriteBarrierAdditionPhase());
     }
 
     public LoopPolicies createLoopPolicies() {