Remove strong mode support from property loads.

src/full-codegen/x64/full-codegen-x64.cc

Index: src/full-codegen/x64/full-codegen-x64.cc
diff --git a/src/full-codegen/x64/full-codegen-x64.cc b/src/full-codegen/x64/full-codegen-x64.cc
index 043c5b1036e6a6e702a859bdde117ba25a048eda..fbdfe19524ef3cd45ca6a3244b8f6c3338e8ae62 100644
--- a/src/full-codegen/x64/full-codegen-x64.cc
+++ b/src/full-codegen/x64/full-codegen-x64.cc
@@ -2028,7 +2028,7 @@ void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) {
   __ Move(LoadDescriptor::NameRegister(), key->value());
   __ Move(LoadDescriptor::SlotRegister(),
           SmiFromSlot(prop->PropertyFeedbackSlot()));
-  CallLoadIC(NOT_INSIDE_TYPEOF, language_mode());
+  CallLoadIC(NOT_INSIDE_TYPEOF);
 }
 
 
@@ -2040,14 +2040,13 @@ void FullCodeGenerator::EmitNamedSuperPropertyLoad(Property* prop) {
   DCHECK(prop->IsSuperAccess());
 
   __ Push(key->value());
-  __ Push(Smi::FromInt(language_mode()));
   __ CallRuntime(Runtime::kLoadFromSuper);
 }
 
 
 void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) {
   SetExpressionPosition(prop);
-  Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate(), language_mode()).code();
+  Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate()).code();
   __ Move(LoadDescriptor::SlotRegister(),
           SmiFromSlot(prop->PropertyFeedbackSlot()));
   CallIC(ic);
@@ -2057,7 +2056,6 @@ void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) {
 void FullCodeGenerator::EmitKeyedSuperPropertyLoad(Property* prop) {
   // Stack: receiver, home_object, key.
   SetExpressionPosition(prop);
-  __ Push(Smi::FromInt(language_mode()));
   __ CallRuntime(Runtime::kLoadKeyedFromSuper);
 }
 
@@ -2532,7 +2530,6 @@ void FullCodeGenerator::EmitSuperCallWithLoadIC(Call* expr) {
   __ Push(rax);
   __ Push(Operand(rsp, kPointerSize * 2));
   __ Push(key->value());
-  __ Push(Smi::FromInt(language_mode()));
 
   // Stack here:
   //  - home_object
@@ -2540,7 +2537,6 @@ void FullCodeGenerator::EmitSuperCallWithLoadIC(Call* expr) {
   //  - this (receiver) <-- LoadFromSuper will pop here and below.
   //  - home_object
   //  - key
-  //  - language_mode
   __ CallRuntime(Runtime::kLoadFromSuper);
 
   // Replace home_object with target function.
@@ -2591,7 +2587,6 @@ void FullCodeGenerator::EmitKeyedSuperCallWithLoadIC(Call* expr) {
   __ Push(rax);
   __ Push(Operand(rsp, kPointerSize * 2));
   VisitForStackValue(prop->key());
-  __ Push(Smi::FromInt(language_mode()));
 
   // Stack here:
   //  - home_object
@@ -2599,7 +2594,6 @@ void FullCodeGenerator::EmitKeyedSuperCallWithLoadIC(Call* expr) {
   //  - this (receiver) <-- LoadKeyedFromSuper will pop here and below.
   //  - home_object
   //  - key
-  //  - language_mode
   __ CallRuntime(Runtime::kLoadKeyedFromSuper);
 
   // Replace home_object with target function.