[TODO] optimize constants: ir.Add(ir.Literal(2), ir.Literal(2)) => ir.Literal(4)

[labs-infra-reader-backup]

See more context:

remorph/core/src/main/scala/com/databricks/labs/remorph/parsers/snowflake/rules/SnowflakeCallMapper.scala

Lines 25 to 30 in 661b684

	// @see https://docs.databricks.com/en/sql/language-manual/functions/slice.html
	// TODO: optimize constants: ir.Add(ir.Literal(2), ir.Literal(2)) => ir.Literal(4)
	ir.Slice(args.head, zeroIndexedToOneIndexed(args(1)), args.lift(2).getOrElse(oneLiteral))
	case ir.CallFunction("ARRAY_SORT", args) => arraySort(args)
	case ir.CallFunction("ARRAY_TO_STRING", args) => ir.ArrayJoin(args.head, args(1), None)
	case ir.CallFunction("BASE64_DECODE_STRING", args) => ir.UnBase64(args.head)