MIPS64: [turbofan] Add backend support for float32 operations.

src/mips64/simulator-mips64.h

 // Copyright 2011 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 MIPS instructions if we are not generating a native
 // MIPS binary. This Simulator allows us to run and debug MIPS 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 323 matching lines @@
       int64_t& current_pc, int64_t& next_pc, int64_t& return_addr_reg,
       int64_t& i128resultH, int64_t& i128resultL);
 
   void DecodeTypeRegisterSPECIAL2(Instruction* instr, const int64_t& rd_reg,
                                   int64_t& alu_out);
 
   void DecodeTypeRegisterSPECIAL3(Instruction* instr, const int64_t& rt_reg,
                                   int64_t& alu_out);
 
   void DecodeTypeRegisterSRsType(Instruction* instr, const int32_t& fs_reg,
-                                 const int64_t& fd_reg);
+                                 const int32_t& ft_reg, const int64_t& fd_reg);
 
   void DecodeTypeRegisterDRsType(Instruction* instr, const int32_t& fs_reg,
                                  const int64_t& ft_reg, const int32_t& fd_reg);
 
   void DecodeTypeRegisterWRsType(Instruction* instr, const int32_t& fs_reg,
                                  const int32_t& fd_reg, int64_t& alu_out);
 
   void DecodeTypeRegisterLRsType(Instruction* instr, const int32_t& fs_reg,
                                  const int32_t& fd_reg, const int32_t& ft_reg);
   // Executing is handled based on the instruction type.
@@ skipping 157 matching lines @@
 
   static inline void UnregisterCTryCatch() {
     Simulator::current(Isolate::Current())->PopAddress();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // !defined(USE_SIMULATOR)
 #endif  // V8_MIPS_SIMULATOR_MIPS_H_