1 files changed, 12 insertions, 11 deletions
diff --git a/deps/v8/src/compiler/compilation-dependencies.cc b/deps/v8/src/compiler/compilation-dependencies.cc
index b67adbd7ca..d5eb8b54be 100644
--- a/deps/v8/src/compiler/compilation-dependencies.cc
+++ b/deps/v8/src/compiler/compilation-dependencies.cc
@@ -17,7 +17,7 @@ CompilationDependencies::CompilationDependencies(Isolate* isolate, Zone* zone)
 class CompilationDependencies::Dependency : public ZoneObject {
  public:
   virtual bool IsValid() const = 0;
-  virtual void Install(MaybeObjectHandle code) = 0;
+  virtual void Install(const MaybeObjectHandle& code) = 0;
 };
 
 class InitialMapDependency final : public CompilationDependencies::Dependency {
@@ -36,7 +36,7 @@ class InitialMapDependency final : public CompilationDependencies::Dependency {
            function->initial_map() == *initial_map_.object<Map>();
   }
 
-  void Install(MaybeObjectHandle code) override {
+  void Install(const MaybeObjectHandle& code) override {
     SLOW_DCHECK(IsValid());
     DependentCode::InstallDependency(function_.isolate(), code,
                                      initial_map_.object<Map>(),
@@ -68,7 +68,7 @@ class PrototypePropertyDependency final
            function->prototype() == *prototype_.object();
   }
 
-  void Install(MaybeObjectHandle code) override {
+  void Install(const MaybeObjectHandle& code) override {
     SLOW_DCHECK(IsValid());
     Handle<JSFunction> function = function_.object<JSFunction>();
     if (!function->has_initial_map()) JSFunction::EnsureHasInitialMap(function);
@@ -90,7 +90,7 @@ class StableMapDependency final : public CompilationDependencies::Dependency {
 
   bool IsValid() const override { return map_.object<Map>()->is_stable(); }
 
-  void Install(MaybeObjectHandle code) override {
+  void Install(const MaybeObjectHandle& code) override {
     SLOW_DCHECK(IsValid());
     DependentCode::InstallDependency(map_.isolate(), code, map_.object<Map>(),
                                      DependentCode::kPrototypeCheckGroup);
@@ -108,7 +108,7 @@ class TransitionDependency final : public CompilationDependencies::Dependency {
 
   bool IsValid() const override { return !map_.object<Map>()->is_deprecated(); }
 
-  void Install(MaybeObjectHandle code) override {
+  void Install(const MaybeObjectHandle& code) override {
     SLOW_DCHECK(IsValid());
     DependentCode::InstallDependency(map_.isolate(), code, map_.object<Map>(),
                                      DependentCode::kTransitionGroup);
@@ -132,7 +132,7 @@ class PretenureModeDependency final
     return mode_ == site_.object<AllocationSite>()->GetPretenureMode();
   }
 
-  void Install(MaybeObjectHandle code) override {
+  void Install(const MaybeObjectHandle& code) override {
     SLOW_DCHECK(IsValid());
     DependentCode::InstallDependency(
         site_.isolate(), code, site_.object<AllocationSite>(),
@@ -162,7 +162,7 @@ class FieldTypeDependency final : public CompilationDependencies::Dependency {
     return *type == owner->instance_descriptors()->GetFieldType(descriptor_);
   }
 
-  void Install(MaybeObjectHandle code) override {
+  void Install(const MaybeObjectHandle& code) override {
     SLOW_DCHECK(IsValid());
     DependentCode::InstallDependency(owner_.isolate(), code,
                                      owner_.object<Map>(),
@@ -193,7 +193,7 @@ class GlobalPropertyDependency final
            read_only_ == cell->property_details().IsReadOnly();
   }
 
-  void Install(MaybeObjectHandle code) override {
+  void Install(const MaybeObjectHandle& code) override {
     SLOW_DCHECK(IsValid());
     DependentCode::InstallDependency(cell_.isolate(), code,
                                      cell_.object<PropertyCell>(),
@@ -217,7 +217,7 @@ class ProtectorDependency final : public CompilationDependencies::Dependency {
     return cell->value() == Smi::FromInt(Isolate::kProtectorValid);
   }
 
-  void Install(MaybeObjectHandle code) override {
+  void Install(const MaybeObjectHandle& code) override {
     SLOW_DCHECK(IsValid());
     DependentCode::InstallDependency(cell_.isolate(), code,
                                      cell_.object<PropertyCell>(),
@@ -249,7 +249,7 @@ class ElementsKindDependency final
     return kind_ == kind;
   }
 
-  void Install(MaybeObjectHandle code) override {
+  void Install(const MaybeObjectHandle& code) override {
     SLOW_DCHECK(IsValid());
     DependentCode::InstallDependency(
         site_.isolate(), code, site_.object<AllocationSite>(),
@@ -271,13 +271,14 @@ class InitialMapInstanceSizePredictionDependency final
   bool IsValid() const override {
     // The dependency is valid if the prediction is the same as the current
     // slack tracking result.
+    if (!function_.object<JSFunction>()->has_initial_map()) return false;
     int instance_size =
         function_.object<JSFunction>()->ComputeInstanceSizeWithMinSlack(
             function_.isolate());
     return instance_size == instance_size_;
   }
 
-  void Install(MaybeObjectHandle code) override {
+  void Install(const MaybeObjectHandle& code) override {
     DCHECK(IsValid());
     // Finish the slack tracking.
     function_.object<JSFunction>()->CompleteInobjectSlackTrackingIfActive();