[Turbofan] Add ARM NEON instructions for implementing SIMD.

src/arm/simulator-arm.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.
 
 
 // Declares a Simulator for ARM instructions if we are not generating a native
 // ARM binary. This Simulator allows us to run and debug ARM code generation on
 // regular desktop machines.
 // V8 calls into generated code by "calling" the CALL_GENERATED_CODE macro,
 // which will start execution in the Simulator or forwards to the real entry
@@ skipping 321 matching lines @@
   void DecodeTypeCP15(Instruction* instr);
 
   // Support for VFP.
   void DecodeTypeVFP(Instruction* instr);
   void DecodeType6CoprocessorIns(Instruction* instr);
   void DecodeSpecialCondition(Instruction* instr);
 
   void DecodeVMOVBetweenCoreAndSinglePrecisionRegisters(Instruction* instr);
   void DecodeVCMP(Instruction* instr);
   void DecodeVCVTBetweenDoubleAndSingle(Instruction* instr);
+  int32_t ConvertDoubleToInt(double val, bool unsigned_integer,
+                             VFPRoundingMode mode);
   void DecodeVCVTBetweenFloatingPointAndInteger(Instruction* instr);
 
   // Executes one instruction.
   void InstructionDecode(Instruction* instr);
 
   // ICache.
   static void CheckICache(base::CustomMatcherHashMap* i_cache,
                           Instruction* instr);
   static void FlushOnePage(base::CustomMatcherHashMap* i_cache, intptr_t start,
                            int size);
@@ skipping 120 matching lines @@
   static inline void UnregisterCTryCatch(v8::internal::Isolate* isolate) {
     Simulator::current(isolate)->PopAddress();
   }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // !defined(USE_SIMULATOR)
 #endif  // V8_ARM_SIMULATOR_ARM_H_