Renamed "symbols" to "internalized strings" throughout the code base,

src/hydrogen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 966 matching lines @@
                                          HType::JSArray(), flags));
   Isolate* isolate = graph()->isolate();
 
   Factory* factory = isolate->factory();
   Handle<Map> map = IsFastDoubleElementsKind(kind)
       ? factory->fixed_double_array_map()
       : factory->fixed_array_map();
   BuildStoreMap(elements, map, BailoutId::StubEntry());
 
   Handle<String> fixed_array_length_field_name =
-      isolate->factory()->length_field_symbol();
+      isolate->factory()->length_field_string();
   HInstruction* store_length =
       new(zone) HStoreNamedField(elements, fixed_array_length_field_name,
                                  capacity, true, FixedArray::kLengthOffset);
   AddInstruction(store_length);
   AddSimulate(BailoutId::StubEntry(), FIXED_SIMULATE);
 
   return elements;
 }
 
 
 HInstruction* HGraphBuilder::BuildStoreMap(HValue* object,
                                            HValue* map,
                                            BailoutId id) {
   Zone* zone = this->zone();
   Isolate* isolate = graph()->isolate();
   Factory* factory = isolate->factory();
-  Handle<String> map_field_name = factory->map_field_symbol();
+  Handle<String> map_field_name = factory->map_field_string();
   HInstruction* store_map =
       new(zone) HStoreNamedField(object, map_field_name, map,
                                  true, JSObject::kMapOffset);
   store_map->SetGVNFlag(kChangesMaps);
   AddInstruction(store_map);
   AddSimulate(id, FIXED_SIMULATE);
   return store_map;
 }
 
 
@@ skipping 4607 matching lines @@
     if (property->IsCompileTimeValue()) continue;
 
     Literal* key = property->key();
     Expression* value = property->value();
 
     switch (property->kind()) {
       case ObjectLiteral::Property::MATERIALIZED_LITERAL:
         ASSERT(!CompileTimeValue::IsCompileTimeValue(value));
         // Fall through.
       case ObjectLiteral::Property::COMPUTED:
-        if (key->handle()->IsSymbol()) {
+        if (key->handle()->IsInternalizedString()) {
           if (property->emit_store()) {
             property->RecordTypeFeedback(oracle());
             CHECK_ALIVE(VisitForValue(value));
             HValue* value = Pop();
             Handle<Map> map = property->GetReceiverType();
             Handle<String> name = property->key()->AsPropertyName();
             HInstruction* store;
             if (map.is_null()) {
               // If we don't know the monomorphic type, do a generic store.
               CHECK_ALIVE(store = BuildStoreNamedGeneric(literal, name, value));
@@ skipping 3612 matching lines @@
           AddInstruction(HCheckInstanceType::NewIsSpecObject(right, zone()));
           HCompareObjectEqAndBranch* result =
               new(zone()) HCompareObjectEqAndBranch(left, right);
           result->set_position(expr->position());
           return ast_context()->ReturnControl(result, expr->id());
         }
       }
       default:
         return Bailout("Unsupported non-primitive compare");
     }
-  } else if (overall_type_info.IsSymbol() && Token::IsEqualityOp(op)) {
+  } else if (overall_type_info.IsInternalizedString() &&
+             Token::IsEqualityOp(op)) {
     AddInstruction(new(zone()) HCheckNonSmi(left));
-    AddInstruction(HCheckInstanceType::NewIsSymbol(left, zone()));
+    AddInstruction(HCheckInstanceType::NewIsInternalizedString(left, zone()));
     AddInstruction(new(zone()) HCheckNonSmi(right));
-    AddInstruction(HCheckInstanceType::NewIsSymbol(right, zone()));
+    AddInstruction(HCheckInstanceType::NewIsInternalizedString(right, zone()));
     HCompareObjectEqAndBranch* result =
         new(zone()) HCompareObjectEqAndBranch(left, right);
     result->set_position(expr->position());
     return ast_context()->ReturnControl(result, expr->id());
   } else {
     if (combined_rep.IsTagged() || combined_rep.IsNone()) {
       HCompareGeneric* result =
           new(zone()) HCompareGeneric(context, left, right, op);
       result->set_observed_input_representation(left_rep, right_rep);
       result->set_position(expr->position());
@@ skipping 410 matching lines @@
       new(zone()) HHasInstanceTypeAndBranch(object, JS_VALUE_TYPE);
   HBasicBlock* if_js_value = graph()->CreateBasicBlock();
   HBasicBlock* not_js_value = graph()->CreateBasicBlock();
   typecheck->SetSuccessorAt(0, if_js_value);
   typecheck->SetSuccessorAt(1, not_js_value);
   current_block()->Finish(typecheck);
   not_js_value->Goto(join);
 
   // Create in-object property store to kValueOffset.
   set_current_block(if_js_value);
-  Handle<String> name = isolate()->factory()->undefined_symbol();
+  Handle<String> name = isolate()->factory()->undefined_string();
   AddInstruction(new(zone()) HStoreNamedField(object,
                                               name,
                                               value,
                                               true,  // in-object store.
                                               JSValue::kValueOffset));
   if_js_value->Goto(join);
   join->SetJoinId(call->id());
   set_current_block(join);
   return ast_context()->ReturnValue(value);
 }
@@ skipping 911 matching lines @@
     }
   }
 
 #ifdef DEBUG
   if (graph_ != NULL) graph_->Verify(false);  // No full verify.
   if (allocator_ != NULL) allocator_->Verify();
 #endif
 }
 
 } }  // namespace v8::internal