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

src/compiler/mips64/code-generator-mips64.cc

Index: src/compiler/mips64/code-generator-mips64.cc
diff --git a/src/compiler/mips64/code-generator-mips64.cc b/src/compiler/mips64/code-generator-mips64.cc
index beea307995d69982c4abc67986614daf2eb7b353..6eae2d710ca550b4ccf1e08e45e5d4c52fb42fe3 100644
--- a/src/compiler/mips64/code-generator-mips64.cc
+++ b/src/compiler/mips64/code-generator-mips64.cc
@@ -960,6 +960,10 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
       __ Cvt_d_ul(i.OutputDoubleRegister(), i.InputRegister(0));
       break;
     }
+    case kMips64CvtSUl: {
+      __ Cvt_s_ul(i.OutputDoubleRegister(), i.InputRegister(0));
+      break;
+    }
     case kMips64TruncWD: {
       FPURegister scratch = kScratchDoubleReg;
       // Other arches use round to zero here, so we follow.