diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 14740965bf..96561ed870 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -3015,7 +3015,7 @@ void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) {
     EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr);
   }
   ContextualMode mode = instr->for_typeof() ? NOT_CONTEXTUAL : CONTEXTUAL;
-  Handle<Code> ic = CodeFactory::LoadIC(isolate(), mode).code();
+  Handle<Code> ic = CodeFactory::LoadICInOptimizedCode(isolate(), mode).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
@@ -3137,7 +3137,8 @@ void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) {
   if (FLAG_vector_ics) {
     EmitVectorLoadICRegisters<LLoadNamedGeneric>(instr);
   }
-  Handle<Code> ic = CodeFactory::LoadIC(isolate(), NOT_CONTEXTUAL).code();
+  Handle<Code> ic =
+      CodeFactory::LoadICInOptimizedCode(isolate(), NOT_CONTEXTUAL).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr, NEVER_INLINE_TARGET_ADDRESS);
 }
 
@@ -3428,7 +3429,7 @@ void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) {
     EmitVectorLoadICRegisters<LLoadKeyedGeneric>(instr);
   }
 
-  Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate()).code();
+  Handle<Code> ic = CodeFactory::KeyedLoadICInOptimizedCode(isolate()).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr, NEVER_INLINE_TARGET_ADDRESS);
 }
 
diff --git a/src/arm64/lithium-codegen-arm64.cc b/src/arm64/lithium-codegen-arm64.cc
index b9b67d9bbd..346142be99 100644
--- a/src/arm64/lithium-codegen-arm64.cc
+++ b/src/arm64/lithium-codegen-arm64.cc
@@ -3391,7 +3391,7 @@ void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) {
     EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr);
   }
   ContextualMode mode = instr->for_typeof() ? NOT_CONTEXTUAL : CONTEXTUAL;
-  Handle<Code> ic = CodeFactory::LoadIC(isolate(), mode).code();
+  Handle<Code> ic = CodeFactory::LoadICInOptimizedCode(isolate(), mode).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
@@ -3645,7 +3645,7 @@ void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) {
     EmitVectorLoadICRegisters<LLoadKeyedGeneric>(instr);
   }
 
-  Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate()).code();
+  Handle<Code> ic = CodeFactory::KeyedLoadICInOptimizedCode(isolate()).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 
   DCHECK(ToRegister(instr->result()).Is(x0));
@@ -3701,7 +3701,8 @@ void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) {
     EmitVectorLoadICRegisters<LLoadNamedGeneric>(instr);
   }
 
-  Handle<Code> ic = CodeFactory::LoadIC(isolate(), NOT_CONTEXTUAL).code();
+  Handle<Code> ic =
+      CodeFactory::LoadICInOptimizedCode(isolate(), NOT_CONTEXTUAL).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 
   DCHECK(ToRegister(instr->result()).is(x0));
diff --git a/src/code-factory.cc b/src/code-factory.cc
index c969c8f1c1..ae94fd5e92 100644
--- a/src/code-factory.cc
+++ b/src/code-factory.cc
@@ -19,13 +19,35 @@ Callable CodeFactory::LoadIC(Isolate* isolate, ContextualMode mode) {
 }
 
 
+// static
+Callable CodeFactory::LoadICInOptimizedCode(Isolate* isolate,
+                                            ContextualMode mode) {
+  if (FLAG_vector_ics) {
+    return Callable(LoadIC::initialize_stub_in_optimized_code(
+                        isolate, LoadICState(mode).GetExtraICState()),
+                    VectorLoadICDescriptor(isolate));
+  }
+  return CodeFactory::LoadIC(isolate, mode);
+}
+
+
 // static
 Callable CodeFactory::KeyedLoadIC(Isolate* isolate) {
-  return Callable(isolate->builtins()->KeyedLoadIC_Initialize(),
+  return Callable(KeyedLoadIC::initialize_stub(isolate),
                   LoadDescriptor(isolate));
 }
 
 
+// static
+Callable CodeFactory::KeyedLoadICInOptimizedCode(Isolate* isolate) {
+  if (FLAG_vector_ics) {
+    return Callable(KeyedLoadIC::initialize_stub_in_optimized_code(isolate),
+                    VectorLoadICDescriptor(isolate));
+  }
+  return CodeFactory::KeyedLoadIC(isolate);
+}
+
+
 // static
 Callable CodeFactory::StoreIC(Isolate* isolate, StrictMode mode) {
   return Callable(StoreIC::initialize_stub(isolate, mode),
diff --git a/src/code-factory.h b/src/code-factory.h
index 3add38486f..2426cf0649 100644
--- a/src/code-factory.h
+++ b/src/code-factory.h
@@ -33,7 +33,9 @@ class CodeFactory FINAL {
  public:
   // Initial states for ICs.
   static Callable LoadIC(Isolate* isolate, ContextualMode mode);
+  static Callable LoadICInOptimizedCode(Isolate* isolate, ContextualMode mode);
   static Callable KeyedLoadIC(Isolate* isolate);
+  static Callable KeyedLoadICInOptimizedCode(Isolate* isolate);
   static Callable StoreIC(Isolate* isolate, StrictMode mode);
   static Callable KeyedStoreIC(Isolate* isolate, StrictMode mode);
 
diff --git a/src/compiler/ast-graph-builder.cc b/src/compiler/ast-graph-builder.cc
index fa3e88bc53..cbc4e518d2 100644
--- a/src/compiler/ast-graph-builder.cc
+++ b/src/compiler/ast-graph-builder.cc
@@ -837,7 +837,8 @@ void AstGraphBuilder::VisitConditional(Conditional* expr) {
 
 
 void AstGraphBuilder::VisitVariableProxy(VariableProxy* expr) {
-  Node* value = BuildVariableLoad(expr->var(), expr->id());
+  VectorSlotPair pair = CreateVectorSlotPair(expr->VariableFeedbackSlot());
+  Node* value = BuildVariableLoad(expr->var(), expr->id(), pair);
   ast_context()->ProduceValue(value);
 }
 
@@ -1091,15 +1092,19 @@ void AstGraphBuilder::VisitAssignment(Assignment* expr) {
     Node* old_value = NULL;
     switch (assign_type) {
       case VARIABLE: {
-        Variable* variable = expr->target()->AsVariableProxy()->var();
-        old_value = BuildVariableLoad(variable, expr->target()->id());
+        VariableProxy* proxy = expr->target()->AsVariableProxy();
+        VectorSlotPair pair =
+            CreateVectorSlotPair(proxy->VariableFeedbackSlot());
+        old_value = BuildVariableLoad(proxy->var(), expr->target()->id(), pair);
         break;
       }
       case NAMED_PROPERTY: {
         Node* object = environment()->Top();
         Unique<Name> name =
             MakeUnique(property->key()->AsLiteral()->AsPropertyName());
-        old_value = NewNode(javascript()->LoadNamed(name), object);
+        VectorSlotPair pair =
+            CreateVectorSlotPair(property->PropertyFeedbackSlot());
+        old_value = NewNode(javascript()->LoadNamed(name, pair), object);
         PrepareFrameState(old_value, property->LoadId(),
                           OutputFrameStateCombine::Push());
         break;
@@ -1107,7 +1112,9 @@ void AstGraphBuilder::VisitAssignment(Assignment* expr) {
       case KEYED_PROPERTY: {
         Node* key = environment()->Top();
         Node* object = environment()->Peek(1);
-        old_value = NewNode(javascript()->LoadProperty(), object, key);
+        VectorSlotPair pair =
+            CreateVectorSlotPair(property->PropertyFeedbackSlot());
+        old_value = NewNode(javascript()->LoadProperty(pair), object, key);
         PrepareFrameState(old_value, property->LoadId(),
                           OutputFrameStateCombine::Push());
         break;
@@ -1179,17 +1186,18 @@ void AstGraphBuilder::VisitThrow(Throw* expr) {
 
 void AstGraphBuilder::VisitProperty(Property* expr) {
   Node* value;
+  VectorSlotPair pair = CreateVectorSlotPair(expr->PropertyFeedbackSlot());
   if (expr->key()->IsPropertyName()) {
     VisitForValue(expr->obj());
     Node* object = environment()->Pop();
     Unique<Name> name = MakeUnique(expr->key()->AsLiteral()->AsPropertyName());
-    value = NewNode(javascript()->LoadNamed(name), object);
+    value = NewNode(javascript()->LoadNamed(name, pair), object);
   } else {
     VisitForValue(expr->obj());
     VisitForValue(expr->key());
     Node* key = environment()->Pop();
     Node* object = environment()->Pop();
-    value = NewNode(javascript()->LoadProperty(), object, key);
+    value = NewNode(javascript()->LoadProperty(pair), object, key);
   }
   PrepareFrameState(value, expr->id(), ast_context()->GetStateCombine());
   ast_context()->ProduceValue(value);
@@ -1208,8 +1216,10 @@ void AstGraphBuilder::VisitCall(Call* expr) {
   bool possibly_eval = false;
   switch (call_type) {
     case Call::GLOBAL_CALL: {
-      Variable* variable = callee->AsVariableProxy()->var();
-      callee_value = BuildVariableLoad(variable, expr->expression()->id());
+      VariableProxy* proxy = callee->AsVariableProxy();
+      VectorSlotPair pair = CreateVectorSlotPair(proxy->VariableFeedbackSlot());
+      callee_value =
+          BuildVariableLoad(proxy->var(), expr->expression()->id(), pair);
       receiver_value = jsgraph()->UndefinedConstant();
       break;
     }
@@ -1231,14 +1241,16 @@ void AstGraphBuilder::VisitCall(Call* expr) {
       Property* property = callee->AsProperty();
       VisitForValue(property->obj());
       Node* object = environment()->Top();
+      VectorSlotPair pair =
+          CreateVectorSlotPair(property->PropertyFeedbackSlot());
       if (property->key()->IsPropertyName()) {
         Unique<Name> name =
             MakeUnique(property->key()->AsLiteral()->AsPropertyName());
-        callee_value = NewNode(javascript()->LoadNamed(name), object);
+        callee_value = NewNode(javascript()->LoadNamed(name, pair), object);
       } else {
         VisitForValue(property->key());
         Node* key = environment()->Pop();
-        callee_value = NewNode(javascript()->LoadProperty(), object, key);
+        callee_value = NewNode(javascript()->LoadProperty(pair), object, key);
       }
       PrepareFrameState(callee_value, property->LoadId(),
                         OutputFrameStateCombine::Push());
@@ -1326,7 +1338,9 @@ void AstGraphBuilder::VisitCallJSRuntime(CallRuntime* expr) {
   CallFunctionFlags flags = NO_CALL_FUNCTION_FLAGS;
   Node* receiver_value = BuildLoadBuiltinsObject();
   Unique<String> unique = MakeUnique(name);
-  Node* callee_value = NewNode(javascript()->LoadNamed(unique), receiver_value);
+  VectorSlotPair pair = CreateVectorSlotPair(expr->CallRuntimeFeedbackSlot());
+  Node* callee_value =
+      NewNode(javascript()->LoadNamed(unique, pair), receiver_value);
   // TODO(jarin): Find/create a bailout id to deoptimize to (crankshaft
   // refuses to optimize functions with jsruntime calls).
   PrepareFrameState(callee_value, BailoutId::None(),
@@ -1401,8 +1415,10 @@ void AstGraphBuilder::VisitCountOperation(CountOperation* expr) {
   int stack_depth = -1;
   switch (assign_type) {
     case VARIABLE: {
-      Variable* variable = expr->expression()->AsVariableProxy()->var();
-      old_value = BuildVariableLoad(variable, expr->expression()->id());
+      VariableProxy* proxy = expr->expression()->AsVariableProxy();
+      VectorSlotPair pair = CreateVectorSlotPair(proxy->VariableFeedbackSlot());
+      old_value =
+          BuildVariableLoad(proxy->var(), expr->expression()->id(), pair);
       stack_depth = 0;
       break;
     }
@@ -1411,7 +1427,9 @@ void AstGraphBuilder::VisitCountOperation(CountOperation* expr) {
       Node* object = environment()->Top();
       Unique<Name> name =
           MakeUnique(property->key()->AsLiteral()->AsPropertyName());
-      old_value = NewNode(javascript()->LoadNamed(name), object);
+      VectorSlotPair pair =
+          CreateVectorSlotPair(property->PropertyFeedbackSlot());
+      old_value = NewNode(javascript()->LoadNamed(name, pair), object);
       PrepareFrameState(old_value, property->LoadId(),
                         OutputFrameStateCombine::Push());
       stack_depth = 1;
@@ -1422,7 +1440,9 @@ void AstGraphBuilder::VisitCountOperation(CountOperation* expr) {
       VisitForValue(property->key());
       Node* key = environment()->Top();
       Node* object = environment()->Peek(1);
-      old_value = NewNode(javascript()->LoadProperty(), object, key);
+      VectorSlotPair pair =
+          CreateVectorSlotPair(property->PropertyFeedbackSlot());
+      old_value = NewNode(javascript()->LoadProperty(pair), object, key);
       PrepareFrameState(old_value, property->LoadId(),
                         OutputFrameStateCombine::Push());
       stack_depth = 2;
@@ -1632,9 +1652,10 @@ void AstGraphBuilder::VisitTypeof(UnaryOperation* expr) {
   if (expr->expression()->IsVariableProxy()) {
     // Typeof does not throw a reference error on global variables, hence we
     // perform a non-contextual load in case the operand is a variable proxy.
-    Variable* variable = expr->expression()->AsVariableProxy()->var();
-    operand =
-        BuildVariableLoad(variable, expr->expression()->id(), NOT_CONTEXTUAL);
+    VariableProxy* proxy = expr->expression()->AsVariableProxy();
+    VectorSlotPair pair = CreateVectorSlotPair(proxy->VariableFeedbackSlot());
+    operand = BuildVariableLoad(proxy->var(), expr->expression()->id(), pair,
+                                NOT_CONTEXTUAL);
   } else {
     VisitForValue(expr->expression());
     operand = environment()->Pop();
@@ -1690,6 +1711,11 @@ StrictMode AstGraphBuilder::strict_mode() const {
 }
 
 
+VectorSlotPair AstGraphBuilder::CreateVectorSlotPair(int slot) const {
+  return VectorSlotPair(handle(info()->shared_info()->feedback_vector()), slot);
+}
+
+
 Node* AstGraphBuilder::ProcessArguments(const Operator* op, int arity) {
   DCHECK(environment()->stack_height() >= arity);
   Node** all = info()->zone()->NewArray<Node*>(arity);
@@ -1779,6 +1805,7 @@ Node* AstGraphBuilder::BuildHoleCheckThrow(Node* value, Variable* variable,
 
 Node* AstGraphBuilder::BuildVariableLoad(Variable* variable,
                                          BailoutId bailout_id,
+                                         const VectorSlotPair& feedback,
                                          ContextualMode contextual_mode) {
   Node* the_hole = jsgraph()->TheHoleConstant();
   VariableMode mode = variable->mode();
@@ -1787,7 +1814,8 @@ Node* AstGraphBuilder::BuildVariableLoad(Variable* variable,
       // Global var, const, or let variable.
       Node* global = BuildLoadGlobalObject();
       Unique<Name> name = MakeUnique(variable->name());
-      const Operator* op = javascript()->LoadNamed(name, contextual_mode);
+      const Operator* op =
+          javascript()->LoadNamed(name, feedback, contextual_mode);
       Node* node = NewNode(op, global);
       PrepareFrameState(node, bailout_id, OutputFrameStateCombine::Push());
       return node;
diff --git a/src/compiler/ast-graph-builder.h b/src/compiler/ast-graph-builder.h
index 967b24bda1..3e4bb8cd11 100644
--- a/src/compiler/ast-graph-builder.h
+++ b/src/compiler/ast-graph-builder.h
@@ -82,7 +82,8 @@ class AstGraphBuilder : public StructuredGraphBuilder, public AstVisitor {
                                 BailoutId bailout_id);
   Node* BuildVariableDelete(Variable* var, BailoutId bailout_id,
                             OutputFrameStateCombine state_combine);
-  Node* BuildVariableLoad(Variable* var, BailoutId bailout_id,
+  Node* BuildVariableLoad(Variable* proxy, BailoutId bailout_id,
+                          const VectorSlotPair& feedback,
                           ContextualMode mode = CONTEXTUAL);
 
   // Builders for accessing the function context.
@@ -143,6 +144,9 @@ class AstGraphBuilder : public StructuredGraphBuilder, public AstVisitor {
   // Current scope during visitation.
   inline Scope* current_scope() const;
 
+  // Named and keyed loads require a VectorSlotPair for successful lowering.
+  VectorSlotPair CreateVectorSlotPair(int slot) const;
+
   // Process arguments to a call by popping {arity} elements off the operand
   // stack and build a call node using the given call operator.
   Node* ProcessArguments(const Operator* op, int arity);
diff --git a/src/compiler/js-generic-lowering.cc b/src/compiler/js-generic-lowering.cc
index 5affb77755..d1951e07bb 100644
--- a/src/compiler/js-generic-lowering.cc
+++ b/src/compiler/js-generic-lowering.cc
@@ -272,15 +272,25 @@ void JSGenericLowering::LowerJSToObject(Node* node) {
 
 
 void JSGenericLowering::LowerJSLoadProperty(Node* node) {
-  Callable callable = CodeFactory::KeyedLoadIC(isolate());
+  const LoadPropertyParameters& p = LoadPropertyParametersOf(node->op());
+  Callable callable = CodeFactory::KeyedLoadICInOptimizedCode(isolate());
+  if (FLAG_vector_ics) {
+    PatchInsertInput(node, 2, jsgraph()->SmiConstant(p.feedback().slot()));
+    PatchInsertInput(node, 3, jsgraph()->HeapConstant(p.feedback().vector()));
+  }
   ReplaceWithStubCall(node, callable, CallDescriptor::kPatchableCallSite);
 }
 
 
 void JSGenericLowering::LowerJSLoadNamed(Node* node) {
   const LoadNamedParameters& p = LoadNamedParametersOf(node->op());
-  Callable callable = CodeFactory::LoadIC(isolate(), p.contextual_mode());
+  Callable callable =
+      CodeFactory::LoadICInOptimizedCode(isolate(), p.contextual_mode());
   PatchInsertInput(node, 1, jsgraph()->HeapConstant(p.name()));
+  if (FLAG_vector_ics) {
+    PatchInsertInput(node, 2, jsgraph()->SmiConstant(p.feedback().slot()));
+    PatchInsertInput(node, 3, jsgraph()->HeapConstant(p.feedback().vector()));
+  }
   ReplaceWithStubCall(node, callable, CallDescriptor::kPatchableCallSite);
 }
 
diff --git a/src/compiler/js-operator.cc b/src/compiler/js-operator.cc
index e0ce3de2b3..cf7d65e2de 100644
--- a/src/compiler/js-operator.cc
+++ b/src/compiler/js-operator.cc
@@ -108,10 +108,23 @@ ContextAccess const& ContextAccessOf(Operator const* op) {
 }
 
 
+bool operator==(VectorSlotPair const& lhs, VectorSlotPair const& rhs) {
+  return lhs.slot() == rhs.slot() && lhs.vector().is_identical_to(rhs.vector());
+}
+
+
+size_t hash_value(VectorSlotPair const& p) {
+  // TODO(mvstanton): include the vector in the hash.
+  base::hash<int> h;
+  return h(p.slot());
+}
+
+
 bool operator==(LoadNamedParameters const& lhs,
                 LoadNamedParameters const& rhs) {
   return lhs.name() == rhs.name() &&
-         lhs.contextual_mode() == rhs.contextual_mode();
+         lhs.contextual_mode() == rhs.contextual_mode() &&
+         lhs.feedback() == rhs.feedback();
 }
 
 
@@ -122,7 +135,7 @@ bool operator!=(LoadNamedParameters const& lhs,
 
 
 size_t hash_value(LoadNamedParameters const& p) {
-  return base::hash_combine(p.name(), p.contextual_mode());
+  return base::hash_combine(p.name(), p.contextual_mode(), p.feedback());
 }
 
 
@@ -131,6 +144,35 @@ std::ostream& operator<<(std::ostream& os, LoadNamedParameters const& p) {
 }
 
 
+std::ostream& operator<<(std::ostream& os, LoadPropertyParameters const& p) {
+  // Nothing special to print.
+  return os;
+}
+
+
+bool operator==(LoadPropertyParameters const& lhs,
+                LoadPropertyParameters const& rhs) {
+  return lhs.feedback() == rhs.feedback();
+}
+
+
+bool operator!=(LoadPropertyParameters const& lhs,
+                LoadPropertyParameters const& rhs) {
+  return !(lhs == rhs);
+}
+
+
+const LoadPropertyParameters& LoadPropertyParametersOf(const Operator* op) {
+  DCHECK_EQ(IrOpcode::kJSLoadProperty, op->opcode());
+  return OpParameter<LoadPropertyParameters>(op);
+}
+
+
+size_t hash_value(LoadPropertyParameters const& p) {
+  return hash_value(p.feedback());
+}
+
+
 const LoadNamedParameters& LoadNamedParametersOf(const Operator* op) {
   DCHECK_EQ(IrOpcode::kJSLoadNamed, op->opcode());
   return OpParameter<LoadNamedParameters>(op);
@@ -193,7 +235,6 @@ const StoreNamedParameters& StoreNamedParametersOf(const Operator* op) {
   V(ToObject, Operator::kNoProperties, 1, 1)              \
   V(Yield, Operator::kNoProperties, 1, 1)                 \
   V(Create, Operator::kEliminatable, 0, 1)                \
-  V(LoadProperty, Operator::kNoProperties, 2, 1)          \
   V(HasProperty, Operator::kNoProperties, 2, 1)           \
   V(TypeOf, Operator::kPure, 1, 1)                        \
   V(InstanceOf, Operator::kNoProperties, 2, 1)            \
@@ -261,14 +302,24 @@ const Operator* JSOperatorBuilder::CallConstruct(int arguments) {
 
 
 const Operator* JSOperatorBuilder::LoadNamed(const Unique<Name>& name,
+                                             const VectorSlotPair& feedback,
                                              ContextualMode contextual_mode) {
-  LoadNamedParameters parameters(name, contextual_mode);
+  LoadNamedParameters parameters(name, feedback, contextual_mode);
   return new (zone()) Operator1<LoadNamedParameters>(
       IrOpcode::kJSLoadNamed, Operator::kNoProperties, 1, 1, "JSLoadNamed",
       parameters);
 }
 
 
+const Operator* JSOperatorBuilder::LoadProperty(
+    const VectorSlotPair& feedback) {
+  LoadPropertyParameters parameters(feedback);
+  return new (zone()) Operator1<LoadPropertyParameters>(
+      IrOpcode::kJSLoadProperty, Operator::kNoProperties, 2, 1,
+      "JSLoadProperty", parameters);
+}
+
+
 const Operator* JSOperatorBuilder::StoreProperty(StrictMode strict_mode) {
   return new (zone())
       Operator1<StrictMode>(IrOpcode::kJSStoreProperty, Operator::kNoProperties,
diff --git a/src/compiler/js-operator.h b/src/compiler/js-operator.h
index 1d658aa644..3f94ff679b 100644
--- a/src/compiler/js-operator.h
+++ b/src/compiler/js-operator.h
@@ -96,19 +96,40 @@ std::ostream& operator<<(std::ostream&, ContextAccess const&);
 ContextAccess const& ContextAccessOf(Operator const*);
 
 
+class VectorSlotPair {
+ public:
+  VectorSlotPair(Handle<TypeFeedbackVector> vector, int slot)
+      : vector_(vector), slot_(slot) {}
+
+  Handle<TypeFeedbackVector> vector() const { return vector_; }
+  int slot() const { return slot_; }
+
+ private:
+  const Handle<TypeFeedbackVector> vector_;
+  const int slot_;
+};
+
+
+bool operator==(VectorSlotPair const& lhs, VectorSlotPair const& rhs);
+
+
 // Defines the property being loaded from an object by a named load. This is
 // used as a parameter by JSLoadNamed operators.
 class LoadNamedParameters FINAL {
  public:
-  LoadNamedParameters(const Unique<Name>& name, ContextualMode contextual_mode)
-      : name_(name), contextual_mode_(contextual_mode) {}
+  LoadNamedParameters(const Unique<Name>& name, const VectorSlotPair& feedback,
+                      ContextualMode contextual_mode)
+      : name_(name), contextual_mode_(contextual_mode), feedback_(feedback) {}
 
   const Unique<Name>& name() const { return name_; }
   ContextualMode contextual_mode() const { return contextual_mode_; }
 
+  const VectorSlotPair& feedback() const { return feedback_; }
+
  private:
   const Unique<Name> name_;
   const ContextualMode contextual_mode_;
+  const VectorSlotPair feedback_;
 };
 
 bool operator==(LoadNamedParameters const&, LoadNamedParameters const&);
@@ -121,6 +142,29 @@ std::ostream& operator<<(std::ostream&, LoadNamedParameters const&);
 const LoadNamedParameters& LoadNamedParametersOf(const Operator* op);
 
 
+// Defines the property being loaded from an object. This is
+// used as a parameter by JSLoadProperty operators.
+class LoadPropertyParameters FINAL {
+ public:
+  explicit LoadPropertyParameters(const VectorSlotPair& feedback)
+      : feedback_(feedback) {}
+
+  const VectorSlotPair& feedback() const { return feedback_; }
+
+ private:
+  const VectorSlotPair feedback_;
+};
+
+bool operator==(LoadPropertyParameters const&, LoadPropertyParameters const&);
+bool operator!=(LoadPropertyParameters const&, LoadPropertyParameters const&);
+
+size_t hash_value(LoadPropertyParameters const&);
+
+std::ostream& operator<<(std::ostream&, LoadPropertyParameters const&);
+
+const LoadPropertyParameters& LoadPropertyParametersOf(const Operator* op);
+
+
 // Defines the property being stored to an object by a named store. This is
 // used as a parameter by JSStoreNamed operators.
 class StoreNamedParameters FINAL {
@@ -188,8 +232,9 @@ class JSOperatorBuilder FINAL {
 
   const Operator* CallConstruct(int arguments);
 
-  const Operator* LoadProperty();
+  const Operator* LoadProperty(const VectorSlotPair& feedback);
   const Operator* LoadNamed(const Unique<Name>& name,
+                            const VectorSlotPair& feedback,
                             ContextualMode contextual_mode = NOT_CONTEXTUAL);
 
   const Operator* StoreProperty(StrictMode strict_mode);
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 1d7c8c1b0c..bb656d6f97 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -2849,7 +2849,7 @@ void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) {
     EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr);
   }
   ContextualMode mode = instr->for_typeof() ? NOT_CONTEXTUAL : CONTEXTUAL;
-  Handle<Code> ic = CodeFactory::LoadIC(isolate(), mode).code();
+  Handle<Code> ic = CodeFactory::LoadICInOptimizedCode(isolate(), mode).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
@@ -2985,7 +2985,8 @@ void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) {
   if (FLAG_vector_ics) {
     EmitVectorLoadICRegisters<LLoadNamedGeneric>(instr);
   }
-  Handle<Code> ic = CodeFactory::LoadIC(isolate(), NOT_CONTEXTUAL).code();
+  Handle<Code> ic =
+      CodeFactory::LoadICInOptimizedCode(isolate(), NOT_CONTEXTUAL).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
@@ -3211,7 +3212,7 @@ void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) {
     EmitVectorLoadICRegisters<LLoadKeyedGeneric>(instr);
   }
 
-  Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate()).code();
+  Handle<Code> ic = CodeFactory::KeyedLoadICInOptimizedCode(isolate()).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
diff --git a/src/ic/ic.cc b/src/ic/ic.cc
index 6b47f035bf..1c621fe482 100644
--- a/src/ic/ic.cc
+++ b/src/ic/ic.cc
@@ -832,6 +832,32 @@ Handle<Code> LoadIC::initialize_stub(Isolate* isolate,
 }
 
 
+Handle<Code> LoadIC::initialize_stub_in_optimized_code(
+    Isolate* isolate, ExtraICState extra_state) {
+  if (FLAG_vector_ics) {
+    return VectorLoadStub(isolate, LoadICState(extra_state)).GetCode();
+  }
+  return initialize_stub(isolate, extra_state);
+}
+
+
+Handle<Code> KeyedLoadIC::initialize_stub(Isolate* isolate) {
+  if (FLAG_vector_ics) {
+    return KeyedLoadICTrampolineStub(isolate).GetCode();
+  }
+
+  return isolate->builtins()->KeyedLoadIC_Initialize();
+}
+
+
+Handle<Code> KeyedLoadIC::initialize_stub_in_optimized_code(Isolate* isolate) {
+  if (FLAG_vector_ics) {
+    return VectorKeyedLoadStub(isolate).GetCode();
+  }
+  return initialize_stub(isolate);
+}
+
+
 Handle<Code> LoadIC::megamorphic_stub() {
   if (kind() == Code::LOAD_IC) {
     MegamorphicLoadStub stub(isolate(), LoadICState(extra_ic_state()));
diff --git a/src/ic/ic.h b/src/ic/ic.h
index f96c6f061a..15479371cb 100644
--- a/src/ic/ic.h
+++ b/src/ic/ic.h
@@ -353,6 +353,8 @@ class LoadIC : public IC {
 
   static Handle<Code> initialize_stub(Isolate* isolate,
                                       ExtraICState extra_state);
+  static Handle<Code> initialize_stub_in_optimized_code(
+      Isolate* isolate, ExtraICState extra_state);
 
   MUST_USE_RESULT MaybeHandle<Object> Load(Handle<Object> object,
                                            Handle<Name> name);
@@ -420,6 +422,8 @@ class KeyedLoadIC : public LoadIC {
   static const int kSlowCaseBitFieldMask =
       (1 << Map::kIsAccessCheckNeeded) | (1 << Map::kHasIndexedInterceptor);
 
+  static Handle<Code> initialize_stub(Isolate* isolate);
+  static Handle<Code> initialize_stub_in_optimized_code(Isolate* isolate);
   static Handle<Code> generic_stub(Isolate* isolate);
   static Handle<Code> pre_monomorphic_stub(Isolate* isolate);
 
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index ef72560b01..168965f888 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -2908,7 +2908,7 @@ void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) {
     EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr);
   }
   ContextualMode mode = instr->for_typeof() ? NOT_CONTEXTUAL : CONTEXTUAL;
-  Handle<Code> ic = CodeFactory::LoadIC(isolate(), mode).code();
+  Handle<Code> ic = CodeFactory::LoadICInOptimizedCode(isolate(), mode).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
@@ -3035,7 +3035,8 @@ void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) {
   if (FLAG_vector_ics) {
     EmitVectorLoadICRegisters<LLoadNamedGeneric>(instr);
   }
-  Handle<Code> ic = CodeFactory::LoadIC(isolate(), NOT_CONTEXTUAL).code();
+  Handle<Code> ic =
+      CodeFactory::LoadICInOptimizedCode(isolate(), NOT_CONTEXTUAL).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
@@ -3343,7 +3344,7 @@ void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) {
     EmitVectorLoadICRegisters<LLoadKeyedGeneric>(instr);
   }
 
-  Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate()).code();
+  Handle<Code> ic = CodeFactory::KeyedLoadICInOptimizedCode(isolate()).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 1981d55f79..bfcb33871a 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -2871,7 +2871,7 @@ void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) {
     EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr);
   }
   ContextualMode mode = instr->for_typeof() ? NOT_CONTEXTUAL : CONTEXTUAL;
-  Handle<Code> ic = CodeFactory::LoadIC(isolate(), mode).code();
+  Handle<Code> ic = CodeFactory::LoadICInOptimizedCode(isolate(), mode).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
@@ -3013,7 +3013,8 @@ void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) {
   if (FLAG_vector_ics) {
     EmitVectorLoadICRegisters<LLoadNamedGeneric>(instr);
   }
-  Handle<Code> ic = CodeFactory::LoadIC(isolate(), NOT_CONTEXTUAL).code();
+  Handle<Code> ic =
+      CodeFactory::LoadICInOptimizedCode(isolate(), NOT_CONTEXTUAL).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
@@ -3295,7 +3296,7 @@ void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) {
     EmitVectorLoadICRegisters<LLoadKeyedGeneric>(instr);
   }
 
-  Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate()).code();
+  Handle<Code> ic = CodeFactory::KeyedLoadICInOptimizedCode(isolate()).code();
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
 
diff --git a/test/unittests/compiler/js-operator-unittest.cc b/test/unittests/compiler/js-operator-unittest.cc
index 061a5973f9..8e601bad87 100644
--- a/test/unittests/compiler/js-operator-unittest.cc
+++ b/test/unittests/compiler/js-operator-unittest.cc
@@ -69,7 +69,6 @@ const SharedOperator kSharedOperators[] = {
     SHARED(ToObject, Operator::kNoProperties, 1, 0, 1, 1, 1, 1),
     SHARED(Yield, Operator::kNoProperties, 1, 0, 1, 1, 1, 1),
     SHARED(Create, Operator::kEliminatable, 0, 0, 1, 0, 1, 1),
-    SHARED(LoadProperty, Operator::kNoProperties, 2, 1, 1, 1, 1, 1),
     SHARED(HasProperty, Operator::kNoProperties, 2, 0, 1, 1, 1, 1),
     SHARED(TypeOf, Operator::kPure, 1, 0, 0, 0, 1, 0),
     SHARED(InstanceOf, Operator::kNoProperties, 2, 0, 1, 1, 1, 1),
diff --git a/test/unittests/compiler/js-typed-lowering-unittest.cc b/test/unittests/compiler/js-typed-lowering-unittest.cc
index 3f3506ff63..08d2031141 100644
--- a/test/unittests/compiler/js-typed-lowering-unittest.cc
+++ b/test/unittests/compiler/js-typed-lowering-unittest.cc
@@ -78,6 +78,7 @@ TEST_F(JSTypedLoweringTest, JSLoadPropertyFromExternalTypedArray) {
   uint8_t backing_store[kLength * 8];
   Handle<JSArrayBuffer> buffer =
       NewArrayBuffer(backing_store, arraysize(backing_store));
+  VectorSlotPair feedback(Handle<TypeFeedbackVector>::null(), 0);
   TRACED_FOREACH(ExternalArrayType, type, kExternalArrayTypes) {
     Handle<JSTypedArray> array =
         factory()->NewJSTypedArray(type, buffer, kLength);
@@ -87,8 +88,8 @@ TEST_F(JSTypedLoweringTest, JSLoadPropertyFromExternalTypedArray) {
     Node* context = UndefinedConstant();
     Node* effect = graph()->start();
     Node* control = graph()->start();
-    Node* node =
-        graph()->NewNode(javascript()->LoadProperty(), base, key, context);
+    Node* node = graph()->NewNode(javascript()->LoadProperty(feedback), base,
+                                  key, context);
     if (FLAG_turbo_deoptimization) {
       node->AppendInput(zone(), UndefinedConstant());
     }