[ic] Let LoadGlobalIC load the variable name from TypeFeedbackMetadata.

src/ast/ast.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/ast/ast.h"
 
 #include <cmath>  // For isfinite.
 
 #include "src/ast/prettyprinter.h"
 #include "src/ast/scopes.h"
@@ skipping 116 matching lines @@
   if (UsesVariableFeedbackSlot()) {
     // VariableProxies that point to the same Variable within a function can
     // make their loads from the same IC slot.
     if (var()->IsUnallocated() || var()->mode() == DYNAMIC_GLOBAL) {
       ZoneHashMap::Entry* entry = cache->Get(var());
       if (entry != NULL) {
         variable_feedback_slot_ = FeedbackVectorSlot(
             static_cast<int>(reinterpret_cast<intptr_t>(entry->value)));
         return;
       }
-      variable_feedback_slot_ = spec->AddLoadGlobalICSlot();
+      variable_feedback_slot_ = spec->AddLoadGlobalICSlot(var()->name());
       cache->Put(var(), variable_feedback_slot_);
     } else {
       variable_feedback_slot_ = spec->AddLoadICSlot();
     }
   }
 }
 
 
 static void AssignVectorSlots(Expression* expr, FeedbackVectorSpec* spec,
                               FeedbackVectorSlot* out_slot) {
@@ skipping 993 matching lines @@
 bool Literal::Match(void* literal1, void* literal2) {
   const AstValue* x = static_cast<Literal*>(literal1)->raw_value();
   const AstValue* y = static_cast<Literal*>(literal2)->raw_value();
   return (x->IsString() && y->IsString() && x->AsString() == y->AsString()) ||
          (x->IsNumber() && y->IsNumber() && x->AsNumber() == y->AsNumber());
 }
 
 
 }  // namespace internal
 }  // namespace v8