[turbofan] Change TruncateFloat64ToUint64 to TryTruncateFloatToUint64.

src/mips64/macro-assembler-mips64.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_MIPS_MACRO_ASSEMBLER_MIPS_H_
 #define V8_MIPS_MACRO_ASSEMBLER_MIPS_H_
 
 #include "src/assembler.h"
 #include "src/globals.h"
 #include "src/mips64/assembler-mips64.h"
@@ skipping 819 matching lines @@
   void Trunc_l_d(FPURegister fd, FPURegister fs);
   void Round_l_d(FPURegister fd, FPURegister fs);
   void Floor_l_d(FPURegister fd, FPURegister fs);
   void Ceil_l_d(FPURegister fd, FPURegister fs);
 
   // Convert double to unsigned word.
   void Trunc_uw_d(FPURegister fd, FPURegister fs, FPURegister scratch);
   void Trunc_uw_d(FPURegister fd, Register rs, FPURegister scratch);
 
   // Convert double to unsigned long.
-  void Trunc_ul_d(FPURegister fd, FPURegister fs, FPURegister scratch);
-  void Trunc_ul_d(FPURegister fd, Register rs, FPURegister scratch);
+  void Trunc_ul_d(FPURegister fd, FPURegister fs, FPURegister scratch,
+                  Register result = no_reg);
+  void Trunc_ul_d(FPURegister fd, Register rs, FPURegister scratch,
+                  Register result = no_reg);
 
   // Convert single to unsigned long.
   void Trunc_ul_s(FPURegister fd, FPURegister fs, FPURegister scratch);
   void Trunc_ul_s(FPURegister fd, Register rs, FPURegister scratch);
 
   void Trunc_w_d(FPURegister fd, FPURegister fs);
   void Round_w_d(FPURegister fd, FPURegister fs);
   void Floor_w_d(FPURegister fd, FPURegister fs);
   void Ceil_w_d(FPURegister fd, FPURegister fs);
 
@@ skipping 997 matching lines @@
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_MIPS_MACRO_ASSEMBLER_MIPS_H_