Revert change 5989, which causes failures in some benchmarks.

src/ia32/code-stubs-ia32.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 27 matching lines @@
 
 // Compute a transcendental math function natively, or call the
 // TranscendentalCache runtime function.
 class TranscendentalCacheStub: public CodeStub {
  public:
   explicit TranscendentalCacheStub(TranscendentalCache::Type type)
       : type_(type) {}
   void Generate(MacroAssembler* masm);
  private:
   TranscendentalCache::Type type_;
-
   Major MajorKey() { return TranscendentalCache; }
   int MinorKey() { return type_; }
   Runtime::FunctionId RuntimeFunction();
   void GenerateOperation(MacroAssembler* masm);
 };
 
 
-// Check the transcendental cache, or generate the result, using SSE2.
-// The argument and result will be in xmm1.
-// Only supports TranscendentalCache::LOG at this point.
-class TranscendentalCacheSSE2Stub: public CodeStub {
- public:
-  explicit TranscendentalCacheSSE2Stub(TranscendentalCache::Type type)
-      : type_(type) {}
-  void Generate(MacroAssembler* masm);
- private:
-  TranscendentalCache::Type type_;
-
-  Major MajorKey() { return TranscendentalCacheSSE2; }
-  int MinorKey() { return type_; }
-  Runtime::FunctionId RuntimeFunction();
-  void GenerateOperation(MacroAssembler* masm);
-};
-
-
 class ToBooleanStub: public CodeStub {
  public:
   ToBooleanStub() { }
 
   void Generate(MacroAssembler* masm);
 
  private:
   Major MajorKey() { return ToBoolean; }
   int MinorKey() { return 0; }
 };
@@ skipping 423 matching lines @@
   void Print() {
     PrintF("NumberToStringStub\n");
   }
 #endif
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_CODE_STUBS_IA32_H_