[ic] Encode LoadGlobalIC's typeof mode in slot kind instead of code object's flags.

src/interpreter/bytecode-array-builder.cc

 // Copyright 2015 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/interpreter/bytecode-array-builder.h"
 
 #include "src/globals.h"
 #include "src/interpreter/bytecode-array-writer.h"
 #include "src/interpreter/bytecode-dead-code-optimizer.h"
 #include "src/interpreter/bytecode-label.h"
@@ skipping 430 matching lines @@
     register_optimizer_->DoMov(from, to, CurrentSourcePosition(Bytecode::kMov));
   } else {
     OutputMov(from, to);
   }
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::LoadGlobal(
     const Handle<String> name, int feedback_slot, TypeofMode typeof_mode) {
   size_t name_index = GetConstantPoolEntry(name);
+  // Ensure that typeof mode is in sync with the IC slot kind if the function
+  // literal is available (not a unit test case).
+  // TODO(ishell): check only in debug mode.
+  if (literal_) {
+    FeedbackVectorSlot slot = TypeFeedbackVector::ToSlot(feedback_slot);
+    CHECK_EQ(GetTypeofModeFromICKind(feedback_vector_spec()->GetKind(slot)),
+             typeof_mode);
+  }
   if (typeof_mode == INSIDE_TYPEOF) {
     OutputLdaGlobalInsideTypeof(name_index, feedback_slot);
   } else {
     DCHECK_EQ(typeof_mode, NOT_INSIDE_TYPEOF);
     OutputLdaGlobal(name_index, feedback_slot);
   }
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::StoreGlobal(
@@ skipping 614 matching lines @@
     RegisterList reg_list) {
   DCHECK(RegisterListIsValid(reg_list));
   if (register_optimizer_)
     register_optimizer_->PrepareOutputRegisterList(reg_list);
   return static_cast<uint32_t>(reg_list.first_register().ToOperand());
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8