ARM: Avoid VMSR instruction when converting to clamped uint8

src/arm/simulator-arm.h

 // Copyright 2012 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 335 matching lines @@
 
   // 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);
   void DecodeVCVTBetweenFloatingPointAndInteger(Instruction* instr);
+  void DecodeVCVTBetweenFloatingPointAndFixedPoint(Instruction* instr);
 
   // Executes one instruction.
   void InstructionDecode(Instruction* instr);
 
   // ICache.
   static void CheckICache(v8::internal::HashMap* i_cache, Instruction* instr);
   static void FlushOnePage(v8::internal::HashMap* i_cache, intptr_t start,
                            int size);
   static CachePage* GetCachePage(v8::internal::HashMap* i_cache, void* page);
 
@@ skipping 117 matching lines @@
 
   static inline void UnregisterCTryCatch() {
     Simulator::current(Isolate::Current())->PopAddress();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // !defined(USE_SIMULATOR)
 #endif  // V8_ARM_SIMULATOR_ARM_H_