Revert of VectorICs: ia32 store ics need a virtual register.

src/isolate.h

 // 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.
 
 #ifndef V8_ISOLATE_H_
 #define V8_ISOLATE_H_
 
 #include <queue>
 #include <set>
 
@@ skipping 1006 matching lines @@
 
   void DumpAndResetCompilationStats();
 
   FunctionEntryHook function_entry_hook() { return function_entry_hook_; }
   void set_function_entry_hook(FunctionEntryHook function_entry_hook) {
     function_entry_hook_ = function_entry_hook;
   }
 
   void* stress_deopt_count_address() { return &stress_deopt_count_; }
 
-  void* vector_store_virtual_register_address() {
-    return &vector_store_virtual_register_;
-  }
-
   base::RandomNumberGenerator* random_number_generator();
 
   // Given an address occupied by a live code object, return that object.
   Object* FindCodeObject(Address a);
 
   int NextOptimizationId() {
     int id = next_optimization_id_++;
     if (!Smi::IsValid(next_optimization_id_)) {
       next_optimization_id_ = 0;
     }
@@ skipping 255 matching lines @@
   ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET)
 #undef ISOLATE_FIELD_OFFSET
 #endif
 
   DeferredHandles* deferred_handles_head_;
   OptimizingCompileDispatcher* optimizing_compile_dispatcher_;
 
   // Counts deopt points if deopt_every_n_times is enabled.
   unsigned int stress_deopt_count_;
 
-  Address vector_store_virtual_register_;
-
   int next_optimization_id_;
 
 #if TRACE_MAPS
   int next_unique_sfi_id_;
 #endif
 
   // List of callbacks when a Call completes.
   List<CallCompletedCallback> call_completed_callbacks_;
 
   v8::Isolate::UseCounterCallback use_counter_callback_;
@@ skipping 228 matching lines @@
   }
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ISOLATE_H_