[ic] Encode [Keyed]StoreIC's language mode in slot kind instead of code object's flags.

src/crankshaft/hydrogen.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/crankshaft/hydrogen.h"
 
 #include <memory>
 #include <sstream>
 
 #include "src/allocation-site-scopes.h"
@@ skipping 6505 matching lines @@
     }
   } else {
     HValue* global_object = Add<HLoadNamedField>(
         BuildGetNativeContext(), nullptr,
         HObjectAccess::ForContextSlot(Context::EXTENSION_INDEX));
     Handle<TypeFeedbackVector> vector =
         handle(current_feedback_vector(), isolate());
     HValue* name = Add<HConstant>(var->name());
     HValue* vector_value = Add<HConstant>(vector);
     HValue* slot_value = Add<HConstant>(vector->GetIndex(slot));
+    DCHECK_EQ(vector->GetLanguageMode(slot), function_language_mode());
     Callable callable = CodeFactory::StoreICInOptimizedCode(
         isolate(), function_language_mode());
     HValue* stub = Add<HConstant>(callable.code());
     HValue* values[] = {global_object, name, value, slot_value, vector_value};
     HCallWithDescriptor* instr = Add<HCallWithDescriptor>(
         Code::STORE_IC, stub, 0, callable.descriptor(), ArrayVector(values));
     USE(instr);
     DCHECK(instr->HasObservableSideEffects());
     Add<HSimulate>(ast_id, REMOVABLE_SIMULATE);
   }
@@ skipping 313 matching lines @@
       return result;
     }
     DCHECK(vector->IsLoadIC(slot));
     Callable callable = CodeFactory::LoadICInOptimizedCode(isolate());
     HValue* stub = Add<HConstant>(callable.code());
     HCallWithDescriptor* result = New<HCallWithDescriptor>(
         Code::LOAD_IC, stub, 0, callable.descriptor(), ArrayVector(values));
     return result;
 
   } else {
+    DCHECK_EQ(vector->GetLanguageMode(slot), function_language_mode());
     HValue* values[] = {object, key, value, slot_value, vector_value};
     if (vector->IsKeyedStoreIC(slot)) {
       // It's possible that a keyed store of a constant string was converted
       // to a named store. Here, at the last minute, we need to make sure to
       // use a generic Keyed Store if we are using the type vector, because
       // it has to share information with full code.
       Callable callable = CodeFactory::KeyedStoreICInOptimizedCode(
           isolate(), function_language_mode());
       HValue* stub = Add<HConstant>(callable.code());
       HCallWithDescriptor* result =
@@ skipping 6156 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8