Arseny Kapoulkine 2f989fc049 Sync to upstream/release/512 (#330) ... - Improve refinement support for unions, in particular it's now possible to implement tagged unions as a union of tables where individual branches use a string literal type for one of the fields. - Fix `string.split` type information - Optimize `select(_, ...)` to run in constant time (~2.7x faster on VariadicSelect benchmark) - Improve debug line information for multi-line assignments - Improve compilation of table literals when table keys are constant expressions/variables - Use forward GC barrier for `setmetatable` which slightly accelerates GC progress		2022-01-27 15:46:05 -08:00
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Luau	Sync to upstream/release/512 (#330)	2022-01-27 15:46:05 -08:00