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

src/compiler/arm64/code-generator-arm64.cc

Index: src/compiler/arm64/code-generator-arm64.cc
diff --git a/src/compiler/arm64/code-generator-arm64.cc b/src/compiler/arm64/code-generator-arm64.cc
index fa73763383d762a748d363b3576f2704dbdeea56..748d94c159f6b978caef2a35e40d26fb4bda257c 100644
--- a/src/compiler/arm64/code-generator-arm64.cc
+++ b/src/compiler/arm64/code-generator-arm64.cc
@@ -992,6 +992,9 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
     case kArm64Uint32ToFloat64:
       __ Ucvtf(i.OutputDoubleRegister(), i.InputRegister32(0));
       break;
+    case kArm64Uint64ToFloat32:
+      __ Ucvtf(i.OutputDoubleRegister().S(), i.InputRegister64(0));
+      break;
     case kArm64Uint64ToFloat64:
       __ Ucvtf(i.OutputDoubleRegister(), i.InputRegister64(0));
       break;