[stubs] Optimize LoadGlobalViaContextStub and StoreGlobalViaContextStub.

src/code-stubs.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/code-stubs.h"
 
 #include <sstream>
 
 #include "src/bootstrapper.h"
 #include "src/cpu-profiler.h"
@@ skipping 708 matching lines @@
 void CreateWeakCellStub::InitializeDescriptor(CodeStubDescriptor* d) {}
 
 
 void RegExpConstructResultStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {
   descriptor->Initialize(
       Runtime::FunctionForId(Runtime::kRegExpConstructResultRT)->entry);
 }
 
 
-void LoadGlobalViaContextStub::InitializeDescriptor(
-    CodeStubDescriptor* descriptor) {
-  // Must never deoptimize.
-  descriptor->Initialize(FUNCTION_ADDR(UnexpectedStubMiss));
-}
-
-
-void StoreGlobalViaContextStub::InitializeDescriptor(
-    CodeStubDescriptor* descriptor) {
-  // Must never deoptimize.
-  descriptor->Initialize(FUNCTION_ADDR(UnexpectedStubMiss));
-}
-
-
 void TransitionElementsKindStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {
   descriptor->Initialize(
       Runtime::FunctionForId(Runtime::kTransitionElementsKind)->entry);
 }
 
 
 void AllocateHeapNumberStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {
   descriptor->Initialize(
@@ skipping 333 matching lines @@
 
   if (type->Is(Type::UntaggedPointer())) {
     return Representation::External();
   }
 
   DCHECK(!type->Is(Type::Untagged()));
   return Representation::Tagged();
 }
 }  // namespace internal
 }  // namespace v8