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# What's changed? - Record the location of properties for table types (closes #802) - Implement stricter UTF-8 validations as per the RFC (https://github.com/luau-lang/rfcs/pull/1) - Implement `buffer` as a new type in both the old and new solvers. - Changed errors produced by some `buffer` builtins to be a bit more generic to avoid platform-dependent error messages. - Fixed a bug where `Unifier` would copy some persistent types, tripping some internal assertions. - Type checking rules on relational operators is now a little bit more lax. - Improve dead code elimination for some `if` statements with complex always-false conditions ## New type solver - Dataflow analysis now generates phi nodes on exit of branches. - Dataflow analysis avoids producing a new definition for locals or properties that are not owned by that loop. - If a function parameter has been constrained to `never`, report errors at all uses of that parameter within that function. - Switch to using the new `Luau::Set` to replace `std::unordered_set` to alleviate some poor allocation characteristics which was negatively affecting overall performance. - Subtyping can now report many failing reasons instead of just the first one that we happened to find during the test. - Subtyping now also report reasons for type pack mismatches. - When visiting `if` statements or expressions, the resulting context are the common terms in both branches. ## Native codegen - Implement support for `buffer` builtins to its IR for x64 and A64. - Optimized `table.insert` by not inserting a table barrier if it is fastcalled with a constant. ## Internal Contributors Co-authored-by: Aaron Weiss <aaronweiss@roblox.com> Co-authored-by: Alexander McCord <amccord@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Arseny Kapoulkine <arseny@roblox.com> Co-authored-by: Aviral Goel <agoel@roblox.com> Co-authored-by: Lily Brown <lbrown@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com> |
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| .. | ||
| Anyification.h | ||
| ApplyTypeFunction.h | ||
| AstJsonEncoder.h | ||
| AstQuery.h | ||
| Autocomplete.h | ||
| BuiltinDefinitions.h | ||
| Cancellation.h | ||
| Clone.h | ||
| Constraint.h | ||
| ConstraintGenerator.h | ||
| ConstraintSolver.h | ||
| ControlFlow.h | ||
| DataFlowGraph.h | ||
| DcrLogger.h | ||
| Def.h | ||
| Differ.h | ||
| Documentation.h | ||
| Error.h | ||
| FileResolver.h | ||
| Frontend.h | ||
| GlobalTypes.h | ||
| InsertionOrderedMap.h | ||
| Instantiation.h | ||
| IostreamHelpers.h | ||
| JsonEmitter.h | ||
| Linter.h | ||
| LValue.h | ||
| Metamethods.h | ||
| Module.h | ||
| ModuleResolver.h | ||
| NonStrictTypeChecker.h | ||
| Normalize.h | ||
| NotNull.h | ||
| Predicate.h | ||
| Quantify.h | ||
| RecursionCounter.h | ||
| Refinement.h | ||
| RequireTracer.h | ||
| Scope.h | ||
| Set.h | ||
| Simplify.h | ||
| Substitution.h | ||
| Subtyping.h | ||
| Symbol.h | ||
| ToDot.h | ||
| TopoSortStatements.h | ||
| ToString.h | ||
| Transpiler.h | ||
| TxnLog.h | ||
| Type.h | ||
| TypeArena.h | ||
| TypeAttach.h | ||
| TypeChecker2.h | ||
| TypeCheckLimits.h | ||
| TypedAllocator.h | ||
| TypeFamily.h | ||
| TypeFwd.h | ||
| TypeInfer.h | ||
| TypeOrPack.h | ||
| TypePack.h | ||
| TypePairHash.h | ||
| TypePath.h | ||
| TypeUtils.h | ||
| Unifiable.h | ||
| Unifier2.h | ||
| Unifier.h | ||
| UnifierSharedState.h | ||
| Variant.h | ||
| VisitType.h | ||