​MIPS: Improve Cvt_d_uw on mips32.

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
diff --git a/src/mips/macro-assembler-mips.h b/src/mips/macro-assembler-mips.h
index 8890be8131cf5eb9678ca9fe14945020952ce2a8..3add424a62b9ae7c5e4b13dc106442e2ced212c6 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -782,7 +782,8 @@ class MacroAssembler: public Assembler {
 
   // Convert unsigned word to double.
   void Cvt_d_uw(FPURegister fd, FPURegister fs, FPURegister scratch);
-  void Cvt_d_uw(FPURegister fd, Register rs, FPURegister scratch);
+  void Cvt_d_uw(FPURegister fd, Register rs, FPURegister scratch,
+                FPURegister fs = no_freg);
 
   // Convert double to unsigned word.
   void Trunc_uw_d(FPURegister fd, FPURegister fs, FPURegister scratch);