[ic] Encode LoadGlobalIC's typeof 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 5269 matching lines @@
         }
       }
 
       LookupIterator it(global, variable->name(), LookupIterator::OWN);
       it.TryLookupCachedProperty();
       if (CanInlineGlobalPropertyAccess(variable, &it, LOAD)) {
         InlineGlobalPropertyLoad(&it, expr->id());
         return;
       } else {
         Handle<TypeFeedbackVector> vector(current_feedback_vector(), isolate());
+        FeedbackVectorSlot slot = expr->VariableFeedbackSlot();
+        DCHECK(vector->IsLoadGlobalIC(slot));
 
         HValue* vector_value = Add<HConstant>(vector);
-        HValue* slot_value =
-            Add<HConstant>(vector->GetIndex(expr->VariableFeedbackSlot()));
+        HValue* slot_value = Add<HConstant>(vector->GetIndex(slot));
         Callable callable = CodeFactory::LoadGlobalICInOptimizedCode(
             isolate(), ast_context()->typeof_mode());
         HValue* stub = Add<HConstant>(callable.code());
         HValue* name = Add<HConstant>(variable->name());
         HValue* values[] = {name, slot_value, vector_value};
         HCallWithDescriptor* instr = New<HCallWithDescriptor>(
             Code::LOAD_GLOBAL_IC, stub, 0, callable.descriptor(),
             ArrayVector(values));
         return ast_context()->ReturnInstruction(instr, expr->id());
       }
@@ skipping 7723 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8