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

src/ast/ast.cc

Index: src/ast/ast.cc
diff --git a/src/ast/ast.cc b/src/ast/ast.cc
index 3ca7f22d74ffcd27ff6b92cfb7efa602cf659c41..4ad45850c021b183d5f1ce9b1019fa593d127746 100644
--- a/src/ast/ast.cc
+++ b/src/ast/ast.cc
@@ -134,7 +134,7 @@ void VariableProxy::AssignFeedbackVectorSlots(Isolate* isolate,
             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();