[turbofan] Implemented the RoundUint64ToFloat32 TurboFan operator for x64, arm64,

src/mips64/macro-assembler-mips64.h

Index: src/mips64/macro-assembler-mips64.h
diff --git a/src/mips64/macro-assembler-mips64.h b/src/mips64/macro-assembler-mips64.h
index 5128a86958f96c3c870f3c2233bba2140b0a7596..0e88ca4d6d68f91cc5f38f9f0d484eb05a8c0436 100644
--- a/src/mips64/macro-assembler-mips64.h
+++ b/src/mips64/macro-assembler-mips64.h
@@ -825,6 +825,10 @@ class MacroAssembler: public Assembler {
   void Cvt_d_ul(FPURegister fd, FPURegister fs);
   void Cvt_d_ul(FPURegister fd, Register rs);
 
+  // Convert unsigned long to float.
+  void Cvt_s_ul(FPURegister fd, FPURegister fs);
+  void Cvt_s_ul(FPURegister fd, Register rs);
+
   // Convert double to unsigned long.
   void Trunc_l_ud(FPURegister fd, FPURegister fs, FPURegister scratch);