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

src/full-codegen/full-codegen.cc

 // Copyright 2012 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/full-codegen/full-codegen.h"
 
 #include "src/ast/ast-numbering.h"
 #include "src/ast/ast.h"
 #include "src/ast/prettyprinter.h"
 #include "src/ast/scopes.h"
@@ skipping 212 matching lines @@
 
   STATIC_ASSERT(!StoreDescriptor::kPassLastArgsOnStack ||
                 StoreDescriptor::kStackArgumentsCount == 2);
   if (StoreDescriptor::kPassLastArgsOnStack) {
     __ Push(StoreDescriptor::ValueRegister());
     EmitPushSlot(slot);
   } else {
     EmitLoadSlot(StoreDescriptor::SlotRegister(), slot);
   }
 
+  // Ensure that language mode is in sync with the IC slot kind.
+  DCHECK_EQ(GetLanguageModeFromICKind(feedback_vector_spec()->GetKind(slot)),
+            language_mode());
   Handle<Code> code = CodeFactory::StoreIC(isolate(), language_mode()).code();
   __ Call(code, RelocInfo::CODE_TARGET);
   RestoreContext();
 }
 
 void FullCodeGenerator::CallKeyedStoreIC(FeedbackVectorSlot slot) {
   STATIC_ASSERT(!StoreDescriptor::kPassLastArgsOnStack ||
                 StoreDescriptor::kStackArgumentsCount == 2);
   if (StoreDescriptor::kPassLastArgsOnStack) {
     __ Push(StoreDescriptor::ValueRegister());
     EmitPushSlot(slot);
   } else {
     EmitLoadSlot(StoreDescriptor::SlotRegister(), slot);
   }
 
+  // Ensure that language mode is in sync with the IC slot kind.
+  DCHECK_EQ(GetLanguageModeFromICKind(feedback_vector_spec()->GetKind(slot)),
+            language_mode());
   Handle<Code> code =
       CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
   __ Call(code, RelocInfo::CODE_TARGET);
   RestoreContext();
 }
 
 void FullCodeGenerator::RecordJSReturnSite(Call* call) {
   // We record the offset of the function return so we can rebuild the frame
   // if the function was inlined, i.e., this is the return address in the
   // inlined function's frame.
@@ skipping 1335 matching lines @@
 LanguageMode FullCodeGenerator::language_mode() {
   return scope()->language_mode();
 }
 
 bool FullCodeGenerator::has_simple_parameters() {
   return info_->has_simple_parameters();
 }
 
 FunctionLiteral* FullCodeGenerator::literal() const { return info_->literal(); }
 
+const FeedbackVectorSpec* FullCodeGenerator::feedback_vector_spec() const {
+  return literal()->feedback_vector_spec();
+}
+
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8