Land two MIPS changes contributed by Paul Lind.

src/mips/macro-assembler-mips.h

 // Copyright 2011 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 506 matching lines @@
   void StoreToSafepointRegistersAndDoublesSlot(Register src, Register dst);
   // Load the value of the src register from its safepoint stack slot
   // into register dst.
   void LoadFromSafepointRegisterSlot(Register dst, Register src);
 
   // MIPS32 R2 instruction macro.
   void Ins(Register rt, Register rs, uint16_t pos, uint16_t size);
   void Ext(Register rt, Register rs, uint16_t pos, uint16_t size);
 
   // Convert unsigned word to double.
-  void Cvt_d_uw(FPURegister fd, FPURegister fs);
-  void Cvt_d_uw(FPURegister fd, Register rs);
+  void Cvt_d_uw(FPURegister fd, FPURegister fs, FPURegister scratch);
+  void Cvt_d_uw(FPURegister fd, Register rs, FPURegister scratch);
 
   // Convert double to unsigned word.
-  void Trunc_uw_d(FPURegister fd, FPURegister fs);
-  void Trunc_uw_d(FPURegister fd, Register rs);
+  void Trunc_uw_d(FPURegister fd, FPURegister fs, FPURegister scratch);
+  void Trunc_uw_d(FPURegister fd, Register rs, FPURegister scratch);
 
   // Convert the HeapNumber pointed to by source to a 32bits signed integer
   // dest. If the HeapNumber does not fit into a 32bits signed integer branch
   // to not_int32 label. If FPU is available double_scratch is used but not
   // scratch2.
   void ConvertToInt32(Register source,
                       Register dest,
                       Register scratch,
                       Register scratch2,
                       FPURegister double_scratch,
@@ skipping 667 matching lines @@
 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
 #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 v8::internal
 
 #endif  // V8_MIPS_MACRO_ASSEMBLER_MIPS_H_