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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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| .. | ||
| conformance | ||
| AssemblyBuilderA64.test.cpp | ||
| AssemblyBuilderX64.test.cpp | ||
| AstJsonEncoder.test.cpp | ||
| AstQuery.test.cpp | ||
| AstQueryDsl.cpp | ||
| AstQueryDsl.h | ||
| AstVisitor.test.cpp | ||
| Autocomplete.test.cpp | ||
| BuiltinDefinitions.test.cpp | ||
| ClassFixture.cpp | ||
| ClassFixture.h | ||
| CodeAllocator.test.cpp | ||
| Compiler.test.cpp | ||
| Config.test.cpp | ||
| Conformance.test.cpp | ||
| ConstraintGeneratorFixture.cpp | ||
| ConstraintGeneratorFixture.h | ||
| ConstraintSolver.test.cpp | ||
| CostModel.test.cpp | ||
| DataFlowGraph.test.cpp | ||
| DenseHash.test.cpp | ||
| DiffAsserts.cpp | ||
| DiffAsserts.h | ||
| Differ.test.cpp | ||
| Error.test.cpp | ||
| Fixture.cpp | ||
| Fixture.h | ||
| Frontend.test.cpp | ||
| InsertionOrderedMap.test.cpp | ||
| IostreamOptional.h | ||
| IrBuilder.test.cpp | ||
| IrCallWrapperX64.test.cpp | ||
| IrRegAllocX64.test.cpp | ||
| JsonEmitter.test.cpp | ||
| Lexer.test.cpp | ||
| Linter.test.cpp | ||
| LValue.test.cpp | ||
| main.cpp | ||
| Module.test.cpp | ||
| NonstrictMode.test.cpp | ||
| NonStrictTypeChecker.test.cpp | ||
| Normalize.test.cpp | ||
| NotNull.test.cpp | ||
| Parser.test.cpp | ||
| RegisterCallbacks.cpp | ||
| RegisterCallbacks.h | ||
| Repl.test.cpp | ||
| RequireTracer.test.cpp | ||
| RuntimeLimits.test.cpp | ||
| ScopedFlags.h | ||
| Set.test.cpp | ||
| Simplify.test.cpp | ||
| StringUtils.test.cpp | ||
| Subtyping.test.cpp | ||
| Symbol.test.cpp | ||
| ToDot.test.cpp | ||
| TopoSort.test.cpp | ||
| ToString.test.cpp | ||
| Transpiler.test.cpp | ||
| TxnLog.test.cpp | ||
| TypeFamily.test.cpp | ||
| TypeInfer.aliases.test.cpp | ||
| TypeInfer.annotations.test.cpp | ||
| TypeInfer.anyerror.test.cpp | ||
| TypeInfer.builtins.test.cpp | ||
| TypeInfer.cfa.test.cpp | ||
| TypeInfer.classes.test.cpp | ||
| TypeInfer.definitions.test.cpp | ||
| TypeInfer.functions.test.cpp | ||
| TypeInfer.generics.test.cpp | ||
| TypeInfer.intersectionTypes.test.cpp | ||
| TypeInfer.loops.test.cpp | ||
| TypeInfer.modules.test.cpp | ||
| TypeInfer.negations.test.cpp | ||
| TypeInfer.oop.test.cpp | ||
| TypeInfer.operators.test.cpp | ||
| TypeInfer.primitives.test.cpp | ||
| TypeInfer.provisional.test.cpp | ||
| TypeInfer.refinements.test.cpp | ||
| TypeInfer.rwprops.test.cpp | ||
| TypeInfer.singletons.test.cpp | ||
| TypeInfer.tables.test.cpp | ||
| TypeInfer.test.cpp | ||
| TypeInfer.tryUnify.test.cpp | ||
| TypeInfer.typePacks.cpp | ||
| TypeInfer.typestates.test.cpp | ||
| TypeInfer.unionTypes.test.cpp | ||
| TypeInfer.unknownnever.test.cpp | ||
| TypePack.test.cpp | ||
| TypePath.test.cpp | ||
| TypeVar.test.cpp | ||
| Unifier2.test.cpp | ||
| Variant.test.cpp | ||
| VisitType.test.cpp | ||