From 16fbfe912c2583f47abc10fc8e183ac913d4817e Mon Sep 17 00:00:00 2001 From: aaron Date: Fri, 22 Sep 2023 15:12:15 -0400 Subject: [PATCH] Sync to upstream/release/596 (#1050) - Cleaned up `FFlag::FixFindBindingAtFunctionName`, `FFlag::LuauNormalizeBlockedTypes`, `FFlag::LuauPCallDebuggerFix` - Added support for break and continue into control flow analysis - The old type unification engine will now report a more fine-grained error at times, indicating that type normalization in particular failed # New Type Solver - Refactor of Unifier2, the new unification implementation for Luau - Completed MVP of new unification implementation - Dramatically simplified overload selection logic - Type family reduction can now apply sooner to free types that have been solved - Subtyping now supports table indexers - Generalization now replaces bad generics with unknown # Native Code Generation - Reduce stack spills caused by FINDUPVAL and STORE_TAG - Improve Generate SHL/SHR/SAR/rotates with immediate operands in X64 - Removed redundant case re-check in table lookup fallback --------- Co-authored-by: Arseny Kapoulkine Co-authored-by: Vyacheslav Egorov Co-authored-by: Andy Friesen Co-authored-by: Lily Brown --- Analysis/include/Luau/ConstraintSolver.h | 12 +- Analysis/include/Luau/Subtyping.h | 2 + Analysis/include/Luau/Type.h | 2 - Analysis/include/Luau/TypeFamily.h | 52 +++- Analysis/include/Luau/Unifier2.h | 42 ++- Analysis/include/Luau/VisitType.h | 15 +- Analysis/src/AstQuery.cpp | 39 +-- Analysis/src/ConstraintSolver.cpp | 169 +++++------- Analysis/src/Normalize.cpp | 9 +- Analysis/src/Subtyping.cpp | 40 ++- Analysis/src/ToString.cpp | 16 +- Analysis/src/Type.cpp | 5 +- Analysis/src/TypeChecker2.cpp | 21 +- Analysis/src/TypeFamily.cpp | 92 +++++-- Analysis/src/TypeUtils.cpp | 2 +- Analysis/src/Unifier.cpp | 59 +--- Analysis/src/Unifier2.cpp | 331 +++++++++++++++++++++-- CMakeLists.txt | 2 + CodeGen/include/Luau/IrRegAllocX64.h | 1 + CodeGen/include/Luau/IrVisitUseDef.h | 224 +++++++++++++++ CodeGen/src/CodeGenUtils.cpp | 12 +- CodeGen/src/IrAnalysis.cpp | 206 +------------- CodeGen/src/IrLoweringX64.cpp | 115 ++++++-- CodeGen/src/IrRegAllocX64.cpp | 6 + CodeGen/src/IrTranslation.cpp | 93 +++++-- CodeGen/src/IrValueLocationTracking.cpp | 35 ++- CodeGen/src/IrValueLocationTracking.h | 2 +- Sources.cmake | 1 + VM/src/ldo.cpp | 4 +- VM/src/loslib.cpp | 10 +- tests/AstQuery.test.cpp | 2 - tests/Conformance.test.cpp | 33 +-- tests/ConstraintGraphBuilderFixture.cpp | 1 - tests/ConstraintSolver.test.cpp | 8 +- tests/Normalize.test.cpp | 4 - tests/Subtyping.test.cpp | 70 +++-- tests/ToString.test.cpp | 10 +- tests/TypeFamily.test.cpp | 10 +- tests/TypeInfer.functions.test.cpp | 8 + tests/TypeInfer.generics.test.cpp | 14 + tests/TypeInfer.loops.test.cpp | 8 +- tests/TypeInfer.oop.test.cpp | 12 +- tests/TypeInfer.provisional.test.cpp | 6 +- tests/TypeInfer.refinements.test.cpp | 6 +- tests/TypeInfer.tables.test.cpp | 8 +- tests/TypeInfer.test.cpp | 7 +- tests/TypeInfer.unknownnever.test.cpp | 5 +- tests/Unifier2.test.cpp | 10 +- tests/VisitType.test.cpp | 21 +- tools/faillist.txt | 131 ++++++--- 50 files changed, 1327 insertions(+), 666 deletions(-) create mode 100644 CodeGen/include/Luau/IrVisitUseDef.h diff --git a/Analysis/include/Luau/ConstraintSolver.h b/Analysis/include/Luau/ConstraintSolver.h index 76520b2c9..672b46030 100644 --- a/Analysis/include/Luau/ConstraintSolver.h +++ b/Analysis/include/Luau/ConstraintSolver.h @@ -203,8 +203,9 @@ struct ConstraintSolver * the result. * @param subType the sub-type to unify. * @param superType the super-type to unify. + * @returns optionally a unification too complex error if unification failed */ - ErrorVec unify(NotNull scope, Location location, TypeId subType, TypeId superType); + std::optional unify(NotNull scope, Location location, TypeId subType, TypeId superType); /** * Creates a new Unifier and performs a single unification operation. Commits @@ -233,6 +234,15 @@ struct ConstraintSolver void reportError(TypeErrorData&& data, const Location& location); void reportError(TypeError e); + /** + * Checks the existing set of constraints to see if there exist any that contain + * the provided free type, indicating that it is not yet ready to be replaced by + * one of its bounds. + * @param ty the free type that to check for related constraints + * @returns whether or not it is unsafe to replace the free type by one of its bounds + */ + bool hasUnresolvedConstraints(TypeId ty); + private: /** Helper used by tryDispatch(SubtypeConstraint) and diff --git a/Analysis/include/Luau/Subtyping.h b/Analysis/include/Luau/Subtyping.h index de702d530..c3fb87f9d 100644 --- a/Analysis/include/Luau/Subtyping.h +++ b/Analysis/include/Luau/Subtyping.h @@ -124,6 +124,8 @@ struct Subtyping SubtypingResult isCovariantWith(const PrimitiveType* subPrim, const TableType* superTable); SubtypingResult isCovariantWith(const SingletonType* subSingleton, const TableType* superTable); + SubtypingResult isCovariantWith(const TableIndexer& subIndexer, const TableIndexer& superIndexer); + SubtypingResult isCovariantWith(const NormalizedType* subNorm, const NormalizedType* superNorm); SubtypingResult isCovariantWith(const NormalizedClassType& subClass, const NormalizedClassType& superClass); SubtypingResult isCovariantWith(const NormalizedClassType& subClass, const TypeIds& superTables); diff --git a/Analysis/include/Luau/Type.h b/Analysis/include/Luau/Type.h index d43266cb4..ee0b96aa8 100644 --- a/Analysis/include/Luau/Type.h +++ b/Analysis/include/Luau/Type.h @@ -141,8 +141,6 @@ struct BlockedType { BlockedType(); int index; - - static int DEPRECATED_nextIndex; }; struct PrimitiveType diff --git a/Analysis/include/Luau/TypeFamily.h b/Analysis/include/Luau/TypeFamily.h index bf47de30a..4ffb6d1a0 100644 --- a/Analysis/include/Luau/TypeFamily.h +++ b/Analysis/include/Luau/TypeFamily.h @@ -54,7 +54,7 @@ struct TypeFamily /// The reducer function for the type family. std::function(std::vector, std::vector, NotNull, NotNull, - NotNull, NotNull, NotNull)> + NotNull, NotNull, NotNull, ConstraintSolver*)> reducer; }; @@ -68,7 +68,7 @@ struct TypePackFamily /// The reducer function for the type pack family. std::function(std::vector, std::vector, NotNull, NotNull, - NotNull, NotNull, NotNull)> + NotNull, NotNull, NotNull, ConstraintSolver*)> reducer; }; @@ -81,37 +81,69 @@ struct FamilyGraphReductionResult DenseHashSet reducedPacks{nullptr}; }; +/** + * Attempt to reduce all instances of any type or type pack family in the type + * graph provided. + * + * @param entrypoint the entry point to the type graph. + * @param location the location the reduction is occurring at; used to populate + * type errors. + * @param arena an arena to allocate types into. + * @param builtins the built-in types. + * @param normalizer the normalizer to use when normalizing types + * @param log a TxnLog to use. If one is provided, substitution will take place + * against the TxnLog, otherwise substitutions will directly mutate the type + * graph. Do not provide the empty TxnLog, as a result. + */ +FamilyGraphReductionResult reduceFamilies(TypeId entrypoint, Location location, NotNull arena, NotNull builtins, + NotNull scope, NotNull normalizer, TxnLog* log = nullptr, bool force = false); + + /** + * Attempt to reduce all instances of any type or type pack family in the type + * graph provided. + * + * @param entrypoint the entry point to the type graph. + * @param location the location the reduction is occurring at; used to populate + * type errors. + * @param arena an arena to allocate types into. + * @param builtins the built-in types. + * @param normalizer the normalizer to use when normalizing types + * @param log a TxnLog to use. If one is provided, substitution will take place + * against the TxnLog, otherwise substitutions will directly mutate the type + * graph. Do not provide the empty TxnLog, as a result. + */ +FamilyGraphReductionResult reduceFamilies(TypePackId entrypoint, Location location, NotNull arena, NotNull builtins, + NotNull scope, NotNull normalizer, TxnLog* log = nullptr, bool force = false); + /** * Attempt to reduce all instances of any type or type pack family in the type * graph provided. * + * @param solver the constraint solver this reduction is being performed in. * @param entrypoint the entry point to the type graph. * @param location the location the reduction is occurring at; used to populate * type errors. - * @param arena an arena to allocate types into. - * @param builtins the built-in types. * @param log a TxnLog to use. If one is provided, substitution will take place * against the TxnLog, otherwise substitutions will directly mutate the type * graph. Do not provide the empty TxnLog, as a result. */ -FamilyGraphReductionResult reduceFamilies(TypeId entrypoint, Location location, NotNull arena, NotNull builtins, - NotNull scope, NotNull normalizer, TxnLog* log = nullptr, bool force = false); +FamilyGraphReductionResult reduceFamilies( + NotNull solver, TypeId entrypoint, Location location, NotNull scope, TxnLog* log = nullptr, bool force = false); /** * Attempt to reduce all instances of any type or type pack family in the type * graph provided. * + * @param solver the constraint solver this reduction is being performed in. * @param entrypoint the entry point to the type graph. * @param location the location the reduction is occurring at; used to populate * type errors. - * @param arena an arena to allocate types into. - * @param builtins the built-in types. * @param log a TxnLog to use. If one is provided, substitution will take place * against the TxnLog, otherwise substitutions will directly mutate the type * graph. Do not provide the empty TxnLog, as a result. */ -FamilyGraphReductionResult reduceFamilies(TypePackId entrypoint, Location location, NotNull arena, NotNull builtins, - NotNull scope, NotNull normalizer, TxnLog* log = nullptr, bool force = false); +FamilyGraphReductionResult reduceFamilies( + NotNull solver, TypePackId entrypoint, Location location, NotNull scope, TxnLog* log = nullptr, bool force = false); struct BuiltinTypeFamilies { diff --git a/Analysis/include/Luau/Unifier2.h b/Analysis/include/Luau/Unifier2.h index 6d32e03fb..4478857e4 100644 --- a/Analysis/include/Luau/Unifier2.h +++ b/Analysis/include/Luau/Unifier2.h @@ -4,6 +4,9 @@ #include "Luau/DenseHash.h" #include "Luau/NotNull.h" +#include "Type.h" +#include "TypeCheckLimits.h" +#include "TypeChecker2.h" #include #include @@ -26,16 +29,44 @@ enum class OccursCheckResult Fail }; +struct TypePairHash +{ + size_t hashOne(Luau::TypeId key) const + { + return (uintptr_t(key) >> 4) ^ (uintptr_t(key) >> 9); + } + + size_t hashOne(Luau::TypePackId key) const + { + return (uintptr_t(key) >> 4) ^ (uintptr_t(key) >> 9); + } + + size_t operator()(const std::pair& x) const + { + return hashOne(x.first) ^ (hashOne(x.second) << 1); + } + + size_t operator()(const std::pair& x) const + { + return hashOne(x.first) ^ (hashOne(x.second) << 1); + } +}; + struct Unifier2 { NotNull arena; NotNull builtinTypes; + NotNull scope; NotNull ice; + TypeCheckLimits limits; + + DenseHashSet, TypePairHash> seenTypePairings{{nullptr, nullptr}}; + DenseHashSet, TypePairHash> seenTypePackPairings{{nullptr, nullptr}}; int recursionCount = 0; int recursionLimit = 0; - Unifier2(NotNull arena, NotNull builtinTypes, NotNull ice); + Unifier2(NotNull arena, NotNull builtinTypes, NotNull scope, NotNull ice); /** Attempt to commit the subtype relation subTy <: superTy to the type * graph. @@ -50,11 +81,18 @@ struct Unifier2 * free TypePack to another and encounter an occurs check violation. */ bool unify(TypeId subTy, TypeId superTy); + bool unify(TypeId subTy, const FunctionType* superFn); + bool unify(const UnionType* subUnion, TypeId superTy); + bool unify(TypeId subTy, const UnionType* superUnion); + bool unify(const IntersectionType* subIntersection, TypeId superTy); + bool unify(TypeId subTy, const IntersectionType* superIntersection); + bool unify(const TableType* subTable, const TableType* superTable); + bool unify(const MetatableType* subMetatable, const MetatableType* superMetatable); // TODO think about this one carefully. We don't do unions or intersections of type packs bool unify(TypePackId subTp, TypePackId superTp); - std::optional generalize(NotNull scope, TypeId ty); + std::optional generalize(TypeId ty); private: /** diff --git a/Analysis/include/Luau/VisitType.h b/Analysis/include/Luau/VisitType.h index 28dfffbf3..ea0acd2b5 100644 --- a/Analysis/include/Luau/VisitType.h +++ b/Analysis/include/Luau/VisitType.h @@ -226,11 +226,16 @@ struct GenericTypeVisitor { if (visit(ty, *ftv)) { - LUAU_ASSERT(ftv->lowerBound); - traverse(ftv->lowerBound); - - LUAU_ASSERT(ftv->upperBound); - traverse(ftv->upperBound); + // TODO: Replace these if statements with assert()s when we + // delete FFlag::DebugLuauDeferredConstraintResolution. + // + // When the old solver is used, these pointers are always + // unused. When the new solver is used, they are never null. + if (ftv->lowerBound) + traverse(ftv->lowerBound); + + if (ftv->upperBound) + traverse(ftv->upperBound); } } else diff --git a/Analysis/src/AstQuery.cpp b/Analysis/src/AstQuery.cpp index a71dd592d..cea810808 100644 --- a/Analysis/src/AstQuery.cpp +++ b/Analysis/src/AstQuery.cpp @@ -12,7 +12,6 @@ #include LUAU_FASTFLAG(DebugLuauReadWriteProperties) -LUAU_FASTFLAGVARIABLE(FixFindBindingAtFunctionName, false); namespace Luau { @@ -151,19 +150,12 @@ struct FindNode : public AstVisitor bool visit(AstStatFunction* node) override { - if (FFlag::FixFindBindingAtFunctionName) - { - visit(static_cast(node)); - if (node->name->location.contains(pos)) - node->name->visit(this); - else if (node->func->location.contains(pos)) - node->func->visit(this); - return false; - } - else - { - return AstVisitor::visit(node); - } + visit(static_cast(node)); + if (node->name->location.contains(pos)) + node->name->visit(this); + else if (node->func->location.contains(pos)) + node->func->visit(this); + return false; } bool visit(AstStatBlock* block) override @@ -208,19 +200,12 @@ struct FindFullAncestry final : public AstVisitor bool visit(AstStatFunction* node) override { - if (FFlag::FixFindBindingAtFunctionName) - { - visit(static_cast(node)); - if (node->name->location.contains(pos)) - node->name->visit(this); - else if (node->func->location.contains(pos)) - node->func->visit(this); - return false; - } - else - { - return AstVisitor::visit(node); - } + visit(static_cast(node)); + if (node->name->location.contains(pos)) + node->name->visit(this); + else if (node->func->location.contains(pos)) + node->func->visit(this); + return false; } bool visit(AstNode* node) override diff --git a/Analysis/src/ConstraintSolver.cpp b/Analysis/src/ConstraintSolver.cpp index 6faea1d2c..e93f45b25 100644 --- a/Analysis/src/ConstraintSolver.cpp +++ b/Analysis/src/ConstraintSolver.cpp @@ -473,7 +473,7 @@ void ConstraintSolver::finalizeModule() rootScope->returnType = anyifyModuleReturnTypePackGenerics(*returnType); } - Unifier2 u2{NotNull{arena}, builtinTypes, NotNull{&iceReporter}}; + Unifier2 u2{NotNull{arena}, builtinTypes, rootScope, NotNull{&iceReporter}}; std::deque queue; for (auto& [name, binding] : rootScope->bindings) @@ -495,7 +495,7 @@ void ConstraintSolver::finalizeModule() FreeTypeSearcher fts{&queue, binding.location}; fts.traverse(ty); - auto result = u2.generalize(rootScope, ty); + auto result = u2.generalize(ty); if (!result) reportError(CodeTooComplex{}, binding.location); } @@ -586,9 +586,9 @@ bool ConstraintSolver::tryDispatch(const GeneralizationConstraint& c, NotNull generalized; - Unifier2 u2{NotNull{arena}, builtinTypes, NotNull{&iceReporter}}; + Unifier2 u2{NotNull{arena}, builtinTypes, constraint->scope, NotNull{&iceReporter}}; - std::optional generalizedTy = u2.generalize(constraint->scope, c.sourceType); + std::optional generalizedTy = u2.generalize(c.sourceType); if (generalizedTy) generalized = QuantifierResult{*generalizedTy}; // FIXME insertedGenerics and insertedGenericPacks else @@ -1310,7 +1310,7 @@ bool ConstraintSolver::tryDispatch(const FunctionCallConstraint& c, NotNulladdType(FunctionType{TypeLevel{}, constraint->scope.get(), argsPack, c.result}); + Unifier2 u2{NotNull{arena}, builtinTypes, constraint->scope, NotNull{&iceReporter}}; - const NormalizedType* normFn = normalizer->normalize(fn); - if (!normFn) - { - reportError(UnificationTooComplex{}, constraint->location); - return true; - } - - // TODO: It would be nice to not need to convert the normalized type back to - // an intersection and flatten it. - TypeId normFnTy = normalizer->typeFromNormal(*normFn); - std::vector overloads = flattenIntersection(normFnTy); - - std::vector arityMatchingOverloads; - std::optional bestOverloadLog; - - for (TypeId overload : overloads) - { - overload = follow(overload); - - std::optional instantiated = instantiate(builtinTypes, arena, NotNull{&limits}, constraint->scope, overload); - - if (!instantiated.has_value()) - { - reportError(UnificationTooComplex{}, constraint->location); - return true; - } - - Unifier u{normalizer, constraint->scope, Location{}, Covariant}; - u.enableNewSolver(); - - u.tryUnify(*instantiated, inferredTy, /* isFunctionCall */ true); - - if (!u.blockedTypes.empty() || !u.blockedTypePacks.empty()) - { - for (TypeId bt : u.blockedTypes) - block(bt, constraint); - for (TypePackId btp : u.blockedTypePacks) - block(btp, constraint); - return false; - } - - if (const auto& e = hasUnificationTooComplex(u.errors)) - reportError(*e); - - const auto& e = hasCountMismatch(u.errors); - bool areArgumentsCompatible = (!e || get(*e)->context != CountMismatch::Context::Arg) && get(*instantiated); - if (areArgumentsCompatible) - arityMatchingOverloads.push_back(*instantiated); + const bool occursCheckPassed = u2.unify(fn, inferredTy); - if (u.errors.empty()) - { - if (c.callSite) - (*c.astOverloadResolvedTypes)[c.callSite] = *instantiated; - - // This overload has no errors, so override the bestOverloadLog and use this one. - bestOverloadLog = std::move(u.log); - break; - } - else if (areArgumentsCompatible && !bestOverloadLog) - { - // This overload is erroneous. Replace its inferences with `any` iff there isn't already a TxnLog. - bestOverloadLog = std::move(u.log); - } - } - - if (arityMatchingOverloads.size() == 1 && c.callSite) - { - // In the name of better error messages in the type checker, we provide - // it with an instantiated function signature that matched arity, but - // not the requisite subtyping requirements. This makes errors better in - // cases where only one overload fit from an arity perspective. - (*c.astOverloadResolvedTypes)[c.callSite] = arityMatchingOverloads.at(0); - } - - // We didn't find any overload that were a viable candidate, so replace the inferences with `any`. - if (!bestOverloadLog) - { - Unifier u{normalizer, constraint->scope, Location{}, Covariant}; - u.enableNewSolver(); + if (occursCheckPassed && c.callSite) + (*c.astOverloadResolvedTypes)[c.callSite] = inferredTy; - u.tryUnify(inferredTy, builtinTypes->anyType); - u.tryUnify(fn, builtinTypes->anyType); - - bestOverloadLog = std::move(u.log); - } - - const auto [changedTypes, changedPacks] = bestOverloadLog->getChanges(); - bestOverloadLog->commit(); - - unblock(changedTypes, constraint->location); - unblock(changedPacks, constraint->location); unblock(c.result, constraint->location); InstantiationQueuer queuer{constraint->scope, constraint->location, this}; @@ -1994,7 +1909,7 @@ bool ConstraintSolver::tryDispatch(const ReduceConstraint& c, NotNulllocation, NotNull{arena}, builtinTypes, constraint->scope, normalizer, nullptr, force); + reduceFamilies(NotNull{this}, ty, constraint->location, constraint->scope, nullptr, force); for (TypeId r : result.reducedTypes) unblock(r, constraint->location); @@ -2018,7 +1933,7 @@ bool ConstraintSolver::tryDispatch(const ReducePackConstraint& c, NotNulllocation, NotNull{arena}, builtinTypes, constraint->scope, normalizer, nullptr, force); + reduceFamilies(NotNull{this}, tp, constraint->location, constraint->scope, nullptr, force); for (TypeId r : result.reducedTypes) unblock(r, constraint->location); @@ -2241,13 +2156,13 @@ bool ConstraintSolver::tryDispatchIterableFunction( const TypePackId nextRetPack = arena->addTypePack(TypePack{{retIndex}, valueTailTy}); const TypeId expectedNextTy = arena->addType(FunctionType{TypeLevel{}, constraint->scope, nextArgPack, nextRetPack}); - ErrorVec errors = unify(constraint->scope, constraint->location, nextTy, expectedNextTy); + std::optional error = unify(constraint->scope, constraint->location, nextTy, expectedNextTy); // if there are no errors from unifying the two, we can pass forward the expected type as our selected resolution. - if (errors.empty()) - { + if (!error) (*c.astForInNextTypes)[c.nextAstFragment] = expectedNextTy; - } + else + reportError(*error); auto it = begin(nextRetPack); std::vector modifiedNextRetHead; @@ -2440,7 +2355,7 @@ std::pair, std::optional> ConstraintSolver::lookupTa template bool ConstraintSolver::tryUnify(NotNull constraint, TID subTy, TID superTy) { - Unifier2 u2{NotNull{arena}, builtinTypes, NotNull{&iceReporter}}; + Unifier2 u2{NotNull{arena}, builtinTypes, constraint->scope, NotNull{&iceReporter}}; bool success = u2.unify(subTy, superTy); @@ -2670,14 +2585,14 @@ bool ConstraintSolver::isBlocked(NotNull constraint) return blockedIt != blockedConstraints.end() && blockedIt->second > 0; } -ErrorVec ConstraintSolver::unify(NotNull scope, Location location, TypeId subType, TypeId superType) +std::optional ConstraintSolver::unify(NotNull scope, Location location, TypeId subType, TypeId superType) { - Unifier2 u2{NotNull{arena}, builtinTypes, NotNull{&iceReporter}}; + Unifier2 u2{NotNull{arena}, builtinTypes, scope, NotNull{&iceReporter}}; const bool ok = u2.unify(subType, superType); if (!ok) - reportError(UnificationTooComplex{}, location); + return {{location, UnificationTooComplex{}}}; unblock(subType, Location{}); unblock(superType, Location{}); @@ -2687,7 +2602,7 @@ ErrorVec ConstraintSolver::unify(NotNull scope, Location location, TypeId ErrorVec ConstraintSolver::unify(NotNull scope, Location location, TypePackId subPack, TypePackId superPack) { - Unifier2 u{arena, builtinTypes, NotNull{&iceReporter}}; + Unifier2 u{arena, builtinTypes, scope, NotNull{&iceReporter}}; u.unify(subPack, superPack); @@ -2762,6 +2677,50 @@ void ConstraintSolver::reportError(TypeError e) errors.back().moduleName = currentModuleName; } +struct ContainsType : TypeOnceVisitor +{ + TypeId needle; + bool found = false; + + explicit ContainsType(TypeId needle) + : needle(needle) + { + } + + bool visit(TypeId) override + { + return !found; // traverse into the type iff we have yet to find the needle + } + + bool visit(TypeId ty, const FreeType&) override + { + found |= ty == needle; + return false; + } +}; + +bool ConstraintSolver::hasUnresolvedConstraints(TypeId ty) +{ + if (!get(ty) || unsolvedConstraints.empty()) + return false; // if it's not free, it never has any unresolved constraints, maybe? + + ContainsType containsTy{ty}; + + for (auto constraint : unsolvedConstraints) + { + if (auto sc = get(*constraint)) + { + containsTy.traverse(sc->subType); + containsTy.traverse(sc->superType); + + if (containsTy.found) + return true; + } + } + + return containsTy.found; +} + TypeId ConstraintSolver::errorRecoveryType() const { return builtinTypes->errorRecoveryType(); diff --git a/Analysis/src/Normalize.cpp b/Analysis/src/Normalize.cpp index ac58c7f69..d22e593be 100644 --- a/Analysis/src/Normalize.cpp +++ b/Analysis/src/Normalize.cpp @@ -17,7 +17,6 @@ LUAU_FASTFLAGVARIABLE(DebugLuauCheckNormalizeInvariant, false) // This could theoretically be 2000 on amd64, but x86 requires this. LUAU_FASTINTVARIABLE(LuauNormalizeIterationLimit, 1200); LUAU_FASTINTVARIABLE(LuauNormalizeCacheLimit, 100000); -LUAU_FASTFLAGVARIABLE(LuauNormalizeBlockedTypes, false); LUAU_FASTFLAGVARIABLE(LuauNormalizeCyclicUnions, false); LUAU_FASTFLAG(LuauTransitiveSubtyping) LUAU_FASTFLAG(DebugLuauReadWriteProperties) @@ -642,7 +641,7 @@ static bool areNormalizedClasses(const NormalizedClassType& tys) static bool isPlainTyvar(TypeId ty) { - return (get(ty) || get(ty) || (FFlag::LuauNormalizeBlockedTypes && get(ty)) || + return (get(ty) || get(ty) || get(ty) || get(ty) || get(ty)); } @@ -1515,7 +1514,7 @@ bool Normalizer::unionNormalWithTy(NormalizedType& here, TypeId there, std::unor } else if (FFlag::LuauTransitiveSubtyping && get(here.tops)) return true; - else if (get(there) || get(there) || (FFlag::LuauNormalizeBlockedTypes && get(there)) || + else if (get(there) || get(there) || get(there) || get(there) || get(there)) { if (tyvarIndex(there) <= ignoreSmallerTyvars) @@ -1584,8 +1583,6 @@ bool Normalizer::unionNormalWithTy(NormalizedType& here, TypeId there, std::unor if (!unionNormals(here, *tn)) return false; } - else if (!FFlag::LuauNormalizeBlockedTypes && get(there)) - LUAU_ASSERT(!"Internal error: Trying to normalize a BlockedType"); else if (get(there) || get(there)) { // nothing @@ -2658,7 +2655,7 @@ bool Normalizer::intersectNormalWithTy(NormalizedType& here, TypeId there, std:: return false; return true; } - else if (get(there) || get(there) || (FFlag::LuauNormalizeBlockedTypes && get(there)) || + else if (get(there) || get(there) || get(there) || get(there) || get(there)) { NormalizedType thereNorm{builtinTypes}; diff --git a/Analysis/src/Subtyping.cpp b/Analysis/src/Subtyping.cpp index e216d6232..e4b14712a 100644 --- a/Analysis/src/Subtyping.cpp +++ b/Analysis/src/Subtyping.cpp @@ -438,7 +438,7 @@ SubtypingResult Subtyping::isCovariantWith(TypePackId subTp, TypePackId superTp) results.push_back({false}); } else - LUAU_ASSERT(0); // TODO + iceReporter->ice("Subtyping test encountered the unexpected type pack: " + toString(*superTail)); } return SubtypingResult::all(results); @@ -736,13 +736,33 @@ SubtypingResult Subtyping::isCovariantWith(const TableType* subTable, const Tabl { SubtypingResult result{true}; + if (subTable->props.empty() && !subTable->indexer && superTable->indexer) + return {false}; + for (const auto& [name, prop] : superTable->props) { - auto it = subTable->props.find(name); - if (it != subTable->props.end()) - result.andAlso(isInvariantWith(prop.type(), it->second.type())); + std::vector results; + if (auto it = subTable->props.find(name); it != subTable->props.end()) + results.push_back(isInvariantWith(it->second.type(), prop.type())); + + if (subTable->indexer) + { + if (isInvariantWith(subTable->indexer->indexType, builtinTypes->stringType).isSubtype) + results.push_back(isInvariantWith(subTable->indexer->indexResultType, prop.type())); + } + + if (results.empty()) + return {false}; + + result.andAlso(SubtypingResult::all(results)); + } + + if (superTable->indexer) + { + if (subTable->indexer) + result.andAlso(isInvariantWith(*subTable->indexer, *superTable->indexer)); else - return SubtypingResult{false}; + return {false}; } return result; @@ -750,10 +770,7 @@ SubtypingResult Subtyping::isCovariantWith(const TableType* subTable, const Tabl SubtypingResult Subtyping::isCovariantWith(const MetatableType* subMt, const MetatableType* superMt) { - return SubtypingResult::all({ - isCovariantWith(subMt->table, superMt->table), - isCovariantWith(subMt->metatable, superMt->metatable), - }); + return isCovariantWith(subMt->table, superMt->table).andAlso(isCovariantWith(subMt->metatable, superMt->metatable)); } SubtypingResult Subtyping::isCovariantWith(const MetatableType* subMt, const TableType* superTable) @@ -852,6 +869,11 @@ SubtypingResult Subtyping::isCovariantWith(const SingletonType* subSingleton, co return result; } +SubtypingResult Subtyping::isCovariantWith(const TableIndexer& subIndexer, const TableIndexer& superIndexer) +{ + return isInvariantWith(subIndexer.indexType, superIndexer.indexType).andAlso(isInvariantWith(superIndexer.indexResultType, subIndexer.indexResultType)); +} + SubtypingResult Subtyping::isCovariantWith(const NormalizedType* subNorm, const NormalizedType* superNorm) { if (!subNorm || !superNorm) diff --git a/Analysis/src/ToString.cpp b/Analysis/src/ToString.cpp index 96492a397..2950ecd05 100644 --- a/Analysis/src/ToString.cpp +++ b/Analysis/src/ToString.cpp @@ -82,8 +82,16 @@ struct FindCyclicTypes final : TypeVisitor if (FFlag::DebugLuauDeferredConstraintResolution) { - traverse(ft.lowerBound); - traverse(ft.upperBound); + // TODO: Replace these if statements with assert()s when we + // delete FFlag::DebugLuauDeferredConstraintResolution. + // + // When the old solver is used, these pointers are always + // unused. When the new solver is used, they are never null. + + if (ft.lowerBound) + traverse(ft.lowerBound); + if (ft.upperBound) + traverse(ft.upperBound); } return false; @@ -442,7 +450,9 @@ struct TypeStringifier { state.result.invalid = true; - if (FFlag::DebugLuauDeferredConstraintResolution) + // TODO: ftv.lowerBound and ftv.upperBound should always be non-nil when + // the new solver is used. This can be replaced with an assert. + if (FFlag::DebugLuauDeferredConstraintResolution && ftv.lowerBound && ftv.upperBound) { const TypeId lowerBound = follow(ftv.lowerBound); const TypeId upperBound = follow(ftv.upperBound); diff --git a/Analysis/src/Type.cpp b/Analysis/src/Type.cpp index 86564cf51..dd48b216d 100644 --- a/Analysis/src/Type.cpp +++ b/Analysis/src/Type.cpp @@ -25,7 +25,6 @@ LUAU_FASTINTVARIABLE(LuauTypeMaximumStringifierLength, 500) LUAU_FASTINTVARIABLE(LuauTableTypeMaximumStringifierLength, 0) LUAU_FASTINT(LuauTypeInferRecursionLimit) LUAU_FASTFLAG(LuauInstantiateInSubtyping) -LUAU_FASTFLAG(LuauNormalizeBlockedTypes) LUAU_FASTFLAG(DebugLuauReadWriteProperties) LUAU_FASTFLAGVARIABLE(LuauInitializeStringMetatableInGlobalTypes, false) @@ -522,12 +521,10 @@ GenericType::GenericType(Scope* scope, const Name& name) } BlockedType::BlockedType() - : index(FFlag::LuauNormalizeBlockedTypes ? Unifiable::freshIndex() : ++DEPRECATED_nextIndex) + : index(Unifiable::freshIndex()) { } -int BlockedType::DEPRECATED_nextIndex = 0; - PendingExpansionType::PendingExpansionType( std::optional prefix, AstName name, std::vector typeArguments, std::vector packArguments) : prefix(prefix) diff --git a/Analysis/src/TypeChecker2.cpp b/Analysis/src/TypeChecker2.cpp index 1daabda34..02e7ecdcf 100644 --- a/Analysis/src/TypeChecker2.cpp +++ b/Analysis/src/TypeChecker2.cpp @@ -11,6 +11,7 @@ #include "Luau/Instantiation.h" #include "Luau/Metamethods.h" #include "Luau/Normalize.h" +#include "Luau/Subtyping.h" #include "Luau/ToString.h" #include "Luau/TxnLog.h" #include "Luau/Type.h" @@ -241,6 +242,7 @@ struct TypeChecker2 DenseHashSet noTypeFamilyErrors{nullptr}; Normalizer normalizer; + Subtyping subtyping; TypeChecker2(NotNull builtinTypes, NotNull unifierState, NotNull limits, DcrLogger* logger, const SourceModule* sourceModule, Module* module) @@ -251,6 +253,7 @@ struct TypeChecker2 , sourceModule(sourceModule) , module(module) , normalizer{&testArena, builtinTypes, unifierState, /* cacheInhabitance */ true} + , subtyping{builtinTypes, NotNull{&testArena}, NotNull{&normalizer}, NotNull{unifierState->iceHandler}, NotNull{module->getModuleScope().get()}} { } @@ -1080,10 +1083,24 @@ struct TypeChecker2 TypeId* originalCallTy = module->astOriginalCallTypes.find(call); TypeId* selectedOverloadTy = module->astOverloadResolvedTypes.find(call); - if (!originalCallTy && !selectedOverloadTy) + if (!originalCallTy) return; - TypeId fnTy = follow(selectedOverloadTy ? *selectedOverloadTy : *originalCallTy); + TypeId fnTy = *originalCallTy; + if (selectedOverloadTy) + { + SubtypingResult result = subtyping.isSubtype(*originalCallTy, *selectedOverloadTy); + if (result.isSubtype) + fnTy = *selectedOverloadTy; + + if (result.normalizationTooComplex) + { + reportError(NormalizationTooComplex{}, call->func->location); + return; + } + } + fnTy = follow(fnTy); + if (get(fnTy) || get(fnTy) || get(fnTy)) return; else if (isOptional(fnTy)) diff --git a/Analysis/src/TypeFamily.cpp b/Analysis/src/TypeFamily.cpp index 61a92c77c..9652f353c 100644 --- a/Analysis/src/TypeFamily.cpp +++ b/Analysis/src/TypeFamily.cpp @@ -2,6 +2,7 @@ #include "Luau/TypeFamily.h" +#include "Luau/ConstraintSolver.h" #include "Luau/DenseHash.h" #include "Luau/Instantiation.h" #include "Luau/Normalize.h" @@ -55,31 +56,38 @@ struct InstanceCollector : TypeOnceVisitor struct FamilyReducer { + ConstraintSolver* solver = nullptr; + + // Conditionally from the solver if one is provided. + NotNull arena; + NotNull builtins; + NotNull normalizer; + std::deque queuedTys; std::deque queuedTps; DenseHashSet irreducible{nullptr}; FamilyGraphReductionResult result; - Location location; - NotNull arena; - NotNull builtins; TxnLog* parentLog = nullptr; TxnLog log; bool force = false; + + // Local to the constraint being reduced. + Location location; NotNull scope; - NotNull normalizer; FamilyReducer(std::deque queuedTys, std::deque queuedTps, Location location, NotNull arena, - NotNull builtins, NotNull scope, NotNull normalizer, TxnLog* parentLog = nullptr, bool force = false) - : queuedTys(std::move(queuedTys)) - , queuedTps(std::move(queuedTps)) - , location(location) + NotNull builtins, NotNull scope, NotNull normalizer, ConstraintSolver* solver, TxnLog* parentLog = nullptr, bool force = false) + : solver(solver) , arena(arena) , builtins(builtins) + , normalizer(normalizer) + , queuedTys(std::move(queuedTys)) + , queuedTps(std::move(queuedTps)) , parentLog(parentLog) , log(parentLog) , force(force) + , location(location) , scope(scope) - , normalizer(normalizer) { } @@ -234,7 +242,7 @@ struct FamilyReducer return; TypeFamilyReductionResult result = - tfit->family->reducer(tfit->typeArguments, tfit->packArguments, arena, builtins, NotNull{&log}, scope, normalizer); + tfit->family->reducer(tfit->typeArguments, tfit->packArguments, arena, builtins, NotNull{&log}, scope, normalizer, solver); handleFamilyReduction(subject, result); } } @@ -253,7 +261,7 @@ struct FamilyReducer return; TypeFamilyReductionResult result = - tfit->family->reducer(tfit->typeArguments, tfit->packArguments, arena, builtins, NotNull{&log}, scope, normalizer); + tfit->family->reducer(tfit->typeArguments, tfit->packArguments, arena, builtins, NotNull{&log}, scope, normalizer, solver); handleFamilyReduction(subject, result); } } @@ -268,9 +276,10 @@ struct FamilyReducer }; static FamilyGraphReductionResult reduceFamiliesInternal(std::deque queuedTys, std::deque queuedTps, Location location, - NotNull arena, NotNull builtins, NotNull scope, NotNull normalizer, TxnLog* log, bool force) + NotNull arena, NotNull builtins, NotNull scope, NotNull normalizer, ConstraintSolver* solver, + TxnLog* log, bool force) { - FamilyReducer reducer{std::move(queuedTys), std::move(queuedTps), location, arena, builtins, scope, normalizer, log, force}; + FamilyReducer reducer{std::move(queuedTys), std::move(queuedTps), location, arena, builtins, scope, normalizer, solver, log, force}; int iterationCount = 0; while (!reducer.done()) @@ -305,7 +314,7 @@ FamilyGraphReductionResult reduceFamilies(TypeId entrypoint, Location location, if (collector.tys.empty() && collector.tps.empty()) return {}; - return reduceFamiliesInternal(std::move(collector.tys), std::move(collector.tps), location, arena, builtins, scope, normalizer, log, force); + return reduceFamiliesInternal(std::move(collector.tys), std::move(collector.tps), location, arena, builtins, scope, normalizer, nullptr, log, force); } FamilyGraphReductionResult reduceFamilies(TypePackId entrypoint, Location location, NotNull arena, NotNull builtins, @@ -325,16 +334,57 @@ FamilyGraphReductionResult reduceFamilies(TypePackId entrypoint, Location locati if (collector.tys.empty() && collector.tps.empty()) return {}; - return reduceFamiliesInternal(std::move(collector.tys), std::move(collector.tps), location, arena, builtins, scope, normalizer, log, force); + return reduceFamiliesInternal(std::move(collector.tys), std::move(collector.tps), location, arena, builtins, scope, normalizer, nullptr, log, force); +} + +FamilyGraphReductionResult reduceFamilies( + NotNull solver, TypeId entrypoint, Location location, NotNull scope, TxnLog* log, bool force) +{ + InstanceCollector collector; + + try + { + collector.traverse(entrypoint); + } + catch (RecursionLimitException&) + { + return FamilyGraphReductionResult{}; + } + + if (collector.tys.empty() && collector.tps.empty()) + return {}; + + return reduceFamiliesInternal(std::move(collector.tys), std::move(collector.tps), location, solver->arena, solver->builtinTypes, scope, solver->normalizer, solver.get(), log, force); +} + +FamilyGraphReductionResult reduceFamilies( + NotNull solver, TypePackId entrypoint, Location location, NotNull scope, TxnLog* log, bool force) +{ + InstanceCollector collector; + + try + { + collector.traverse(entrypoint); + } + catch (RecursionLimitException&) + { + return FamilyGraphReductionResult{}; + } + + if (collector.tys.empty() && collector.tps.empty()) + return {}; + + return reduceFamiliesInternal(std::move(collector.tys), std::move(collector.tps), location, solver->arena, solver->builtinTypes, scope, solver->normalizer, solver.get(), log, force); } -bool isPending(TypeId ty, NotNull log) +bool isPending(TypeId ty, NotNull log, ConstraintSolver* solver) { - return log->is(ty) || log->is(ty) || log->is(ty) || log->is(ty); + return log->is(ty) || log->is(ty) || log->is(ty) + || (solver && solver->hasUnresolvedConstraints(ty)); } TypeFamilyReductionResult addFamilyFn(std::vector typeParams, std::vector packParams, NotNull arena, - NotNull builtins, NotNull log, NotNull scope, NotNull normalizer) + NotNull builtins, NotNull log, NotNull scope, NotNull normalizer, ConstraintSolver* solver) { if (typeParams.size() != 2 || !packParams.empty()) { @@ -367,11 +417,11 @@ TypeFamilyReductionResult addFamilyFn(std::vector typeParams, st { return {builtins->neverType, false, {}, {}}; } - else if (isPending(lhsTy, log)) + else if (isPending(lhsTy, log, solver)) { return {std::nullopt, false, {lhsTy}, {}}; } - else if (isPending(rhsTy, log)) + else if (isPending(rhsTy, log, solver)) { return {std::nullopt, false, {rhsTy}, {}}; } @@ -391,7 +441,7 @@ TypeFamilyReductionResult addFamilyFn(std::vector typeParams, st if (!addMm) return {std::nullopt, true, {}, {}}; - if (isPending(log->follow(*addMm), log)) + if (isPending(log->follow(*addMm), log, solver)) return {std::nullopt, false, {log->follow(*addMm)}, {}}; const FunctionType* mmFtv = log->get(log->follow(*addMm)); diff --git a/Analysis/src/TypeUtils.cpp b/Analysis/src/TypeUtils.cpp index 089008fae..0b878180c 100644 --- a/Analysis/src/TypeUtils.cpp +++ b/Analysis/src/TypeUtils.cpp @@ -326,7 +326,7 @@ ErrorSuppression shouldSuppressErrors(NotNull normalizer, TypePackId } // check the tail if we have one and it's finite - if (tail && finite(*tail)) + if (tail && tp != tail && finite(*tail)) return shouldSuppressErrors(normalizer, *tail); return ErrorSuppression::DoNotSuppress; diff --git a/Analysis/src/Unifier.cpp b/Analysis/src/Unifier.cpp index 4a27bbdec..f454d9480 100644 --- a/Analysis/src/Unifier.cpp +++ b/Analysis/src/Unifier.cpp @@ -22,7 +22,6 @@ LUAU_FASTFLAGVARIABLE(LuauInstantiateInSubtyping, false) LUAU_FASTFLAGVARIABLE(LuauMaintainScopesInUnifier, false) LUAU_FASTFLAGVARIABLE(LuauTransitiveSubtyping, false) LUAU_FASTFLAGVARIABLE(LuauOccursIsntAlwaysFailure, false) -LUAU_FASTFLAG(LuauNormalizeBlockedTypes) LUAU_FASTFLAG(LuauAlwaysCommitInferencesOfFunctionCalls) LUAU_FASTFLAG(DebugLuauDeferredConstraintResolution) LUAU_FASTFLAGVARIABLE(LuauFixIndexerSubtypingOrdering, false) @@ -607,7 +606,7 @@ void Unifier::tryUnify_(TypeId subTy, TypeId superTy, bool isFunctionCall, bool const NormalizedType* superNorm = normalizer->normalize(superTy); if (!superNorm) - return reportError(location, UnificationTooComplex{}); + return reportError(location, NormalizationTooComplex{}); if (!log.get(superNorm->tops)) failure = true; @@ -850,32 +849,6 @@ void Unifier::tryUnifyUnionWithType(TypeId subTy, const UnionType* subUnion, Typ } } -struct DEPRECATED_BlockedTypeFinder : TypeOnceVisitor -{ - std::unordered_set blockedTypes; - - bool visit(TypeId ty, const BlockedType&) override - { - blockedTypes.insert(ty); - return true; - } -}; - -bool Unifier::DEPRECATED_blockOnBlockedTypes(TypeId subTy, TypeId superTy) -{ - LUAU_ASSERT(!FFlag::LuauNormalizeBlockedTypes); - DEPRECATED_BlockedTypeFinder blockedTypeFinder; - blockedTypeFinder.traverse(subTy); - blockedTypeFinder.traverse(superTy); - if (!blockedTypeFinder.blockedTypes.empty()) - { - blockedTypes.insert(end(blockedTypes), begin(blockedTypeFinder.blockedTypes), end(blockedTypeFinder.blockedTypes)); - return true; - } - - return false; -} - void Unifier::tryUnifyTypeWithUnion(TypeId subTy, TypeId superTy, const UnionType* uv, bool cacheEnabled, bool isFunctionCall) { // T <: A | B if T <: A or T <: B @@ -1001,7 +974,7 @@ void Unifier::tryUnifyTypeWithUnion(TypeId subTy, TypeId superTy, const UnionTyp const NormalizedType* superNorm = normalizer->normalize(superTy); Unifier innerState = makeChildUnifier(); if (!subNorm || !superNorm) - return reportError(location, UnificationTooComplex{}); + return reportError(location, NormalizationTooComplex{}); else if ((failedOptionCount == 1 || foundHeuristic) && failedOption) innerState.tryUnifyNormalizedTypes( subTy, superTy, *subNorm, *superNorm, "None of the union options are compatible. For example:", *failedOption); @@ -1016,18 +989,13 @@ void Unifier::tryUnifyTypeWithUnion(TypeId subTy, TypeId superTy, const UnionTyp } else if (!found && normalize) { - // We cannot normalize a type that contains blocked types. We have to - // stop for now if we find any. - if (!FFlag::LuauNormalizeBlockedTypes && DEPRECATED_blockOnBlockedTypes(subTy, superTy)) - return; - // It is possible that T <: A | B even though T normalize(subTy); const NormalizedType* superNorm = normalizer->normalize(superTy); if (!subNorm || !superNorm) - reportError(location, UnificationTooComplex{}); + reportError(location, NormalizationTooComplex{}); else if ((failedOptionCount == 1 || foundHeuristic) && failedOption) tryUnifyNormalizedTypes(subTy, superTy, *subNorm, *superNorm, "None of the union options are compatible. For example:", *failedOption); else @@ -1125,11 +1093,6 @@ void Unifier::tryUnifyIntersectionWithType(TypeId subTy, const IntersectionType* if (useNewSolver && normalize) { - // We cannot normalize a type that contains blocked types. We have to - // stop for now if we find any. - if (!FFlag::LuauNormalizeBlockedTypes && DEPRECATED_blockOnBlockedTypes(subTy, superTy)) - return; - // Sometimes a negation type is inside one of the types, e.g. { p: number } & { p: ~number }. NegationTypeFinder finder; finder.traverse(subTy); @@ -1144,7 +1107,7 @@ void Unifier::tryUnifyIntersectionWithType(TypeId subTy, const IntersectionType* if (subNorm && superNorm) tryUnifyNormalizedTypes(subTy, superTy, *subNorm, *superNorm, "none of the intersection parts are compatible"); else - reportError(location, UnificationTooComplex{}); + reportError(location, NormalizationTooComplex{}); return; } @@ -1190,11 +1153,6 @@ void Unifier::tryUnifyIntersectionWithType(TypeId subTy, const IntersectionType* reportError(*unificationTooComplex); else if (!found && normalize) { - // We cannot normalize a type that contains blocked types. We have to - // stop for now if we find any. - if (!FFlag::LuauNormalizeBlockedTypes && DEPRECATED_blockOnBlockedTypes(subTy, superTy)) - return; - // It is possible that A & B <: T even though A (subTy) && !log.get(superTy)) ice("tryUnifyNegations superTy or subTy must be a negation type"); - // We cannot normalize a type that contains blocked types. We have to - // stop for now if we find any. - if (!FFlag::LuauNormalizeBlockedTypes && DEPRECATED_blockOnBlockedTypes(subTy, superTy)) - return; - const NormalizedType* subNorm = normalizer->normalize(subTy); const NormalizedType* superNorm = normalizer->normalize(superTy); if (!subNorm || !superNorm) - return reportError(location, UnificationTooComplex{}); + return reportError(location, NormalizationTooComplex{}); // T +#include #include LUAU_FASTINT(LuauTypeInferRecursionLimit) @@ -20,10 +23,12 @@ LUAU_FASTINT(LuauTypeInferRecursionLimit) namespace Luau { -Unifier2::Unifier2(NotNull arena, NotNull builtinTypes, NotNull ice) +Unifier2::Unifier2(NotNull arena, NotNull builtinTypes, NotNull scope, NotNull ice) : arena(arena) , builtinTypes(builtinTypes) + , scope(scope) , ice(ice) + , limits(TypeCheckLimits{}) // TODO: typecheck limits in unifier2 , recursionLimit(FInt::LuauTypeInferRecursionLimit) { } @@ -33,6 +38,10 @@ bool Unifier2::unify(TypeId subTy, TypeId superTy) subTy = follow(subTy); superTy = follow(superTy); + if (seenTypePairings.contains({subTy, superTy})) + return true; + seenTypePairings.insert({subTy, superTy}); + if (subTy == superTy) return true; @@ -48,20 +57,211 @@ bool Unifier2::unify(TypeId subTy, TypeId superTy) if (subFree || superFree) return true; - const FunctionType* subFn = get(subTy); - const FunctionType* superFn = get(superTy); - + auto subFn = get(subTy); + auto superFn = get(superTy); if (subFn && superFn) + return unify(subTy, superFn); + + auto subUnion = get(subTy); + auto superUnion = get(superTy); + if (subUnion) + return unify(subUnion, superTy); + else if (superUnion) + return unify(subTy, superUnion); + + auto subIntersection = get(subTy); + auto superIntersection = get(superTy); + if (subIntersection) + return unify(subIntersection, superTy); + else if (superIntersection) + return unify(subTy, superIntersection); + + auto subNever = get(subTy); + auto superNever = get(superTy); + if (subNever && superNever) + return true; + else if (subNever && superFn) + { + // If `never` is the subtype, then we can propagate that inward. + bool argResult = unify(superFn->argTypes, builtinTypes->neverTypePack); + bool retResult = unify(builtinTypes->neverTypePack, superFn->retTypes); + return argResult && retResult; + } + else if (subFn && superNever) + { + // If `never` is the supertype, then we can propagate that inward. + bool argResult = unify(builtinTypes->neverTypePack, subFn->argTypes); + bool retResult = unify(subFn->retTypes, builtinTypes->neverTypePack); + return argResult && retResult; + } + + auto subAny = get(subTy); + auto superAny = get(superTy); + if (subAny && superAny) + return true; + else if (subAny && superFn) + { + // If `any` is the subtype, then we can propagate that inward. + bool argResult = unify(superFn->argTypes, builtinTypes->anyTypePack); + bool retResult = unify(builtinTypes->anyTypePack, superFn->retTypes); + return argResult && retResult; + } + else if (subFn && superAny) { - bool argResult = unify(superFn->argTypes, subFn->argTypes); - bool retResult = unify(subFn->retTypes, superFn->retTypes); + // If `any` is the supertype, then we can propagate that inward. + bool argResult = unify(builtinTypes->anyTypePack, subFn->argTypes); + bool retResult = unify(subFn->retTypes, builtinTypes->anyTypePack); return argResult && retResult; } + auto subTable = get(subTy); + auto superTable = get(superTy); + if (subTable && superTable) + { + // `boundTo` works like a bound type, and therefore we'd replace it + // with the `boundTo` and try unification again. + // + // However, these pointers should have been chased already by follow(). + LUAU_ASSERT(!subTable->boundTo); + LUAU_ASSERT(!superTable->boundTo); + + return unify(subTable, superTable); + } + + auto subMetatable = get(subTy); + auto superMetatable = get(superTy); + if (subMetatable && superMetatable) + return unify(subMetatable, superMetatable); + else if (subMetatable) // if we only have one metatable, unify with the inner table + return unify(subMetatable->table, superTy); + else if (superMetatable) // if we only have one metatable, unify with the inner table + return unify(subTy, superMetatable->table); + + auto [subNegation, superNegation] = get2(subTy, superTy); + if (subNegation && superNegation) + return unify(subNegation->ty, superNegation->ty); + // The unification failed, but we're not doing type checking. return true; } +bool Unifier2::unify(TypeId subTy, const FunctionType* superFn) { + const FunctionType* subFn = get(subTy); + + bool shouldInstantiate = + (superFn->generics.empty() && !subFn->generics.empty()) || (superFn->genericPacks.empty() && !subFn->genericPacks.empty()); + + if (shouldInstantiate) + { + std::optional instantiated = instantiate(builtinTypes, arena, NotNull{&limits}, scope, subTy); + subFn = get(*instantiated); + + LUAU_ASSERT(subFn); // instantiation should not make a function type _not_ a function type. + } + + bool argResult = unify(superFn->argTypes, subFn->argTypes); + bool retResult = unify(subFn->retTypes, superFn->retTypes); + return argResult && retResult; +} + +bool Unifier2::unify(const UnionType* subUnion, TypeId superTy) +{ + bool result = true; + + // if the occurs check fails for any option, it fails overall + for (auto subOption : subUnion->options) + result &= unify(subOption, superTy); + + return result; +} + +bool Unifier2::unify(TypeId subTy, const UnionType* superUnion) +{ + bool result = true; + + // if the occurs check fails for any option, it fails overall + for (auto superOption : superUnion->options) + result &= unify(subTy, superOption); + + return result; +} + +bool Unifier2::unify(const IntersectionType* subIntersection, TypeId superTy) +{ + bool result = true; + + // if the occurs check fails for any part, it fails overall + for (auto subPart : subIntersection->parts) + result &= unify(subPart, superTy); + + return result; +} + +bool Unifier2::unify(TypeId subTy, const IntersectionType* superIntersection) +{ + bool result = true; + + // if the occurs check fails for any part, it fails overall + for (auto superPart : superIntersection->parts) + result &= unify(subTy, superPart); + + return result; +} + +bool Unifier2::unify(const TableType* subTable, const TableType* superTable) +{ + bool result = true; + + // It suffices to only check one direction of properties since we'll only ever have work to do during unification + // if the property is present in both table types. + for (const auto& [propName, subProp] : subTable->props) + { + auto superPropOpt = superTable->props.find(propName); + + if (superPropOpt != superTable->props.end()) + result &= unify(subProp.type(), superPropOpt->second.type()); + } + + auto subTypeParamsIter = subTable->instantiatedTypeParams.begin(); + auto superTypeParamsIter = superTable->instantiatedTypeParams.begin(); + + while (subTypeParamsIter != subTable->instantiatedTypeParams.end() && superTypeParamsIter != superTable->instantiatedTypeParams.end()) + { + result &= unify(*subTypeParamsIter, *superTypeParamsIter); + + subTypeParamsIter++; + superTypeParamsIter++; + } + + auto subTypePackParamsIter = subTable->instantiatedTypePackParams.begin(); + auto superTypePackParamsIter = superTable->instantiatedTypePackParams.begin(); + + while (subTypePackParamsIter != subTable->instantiatedTypePackParams.end() && + superTypePackParamsIter != superTable->instantiatedTypePackParams.end()) + { + result &= unify(*subTypePackParamsIter, *superTypePackParamsIter); + + subTypePackParamsIter++; + superTypePackParamsIter++; + } + + if (subTable->selfTy && superTable->selfTy) + result &= unify(*subTable->selfTy, *superTable->selfTy); + + if (subTable->indexer && superTable->indexer) + { + result &= unify(subTable->indexer->indexType, superTable->indexer->indexType); + result &= unify(subTable->indexer->indexResultType, superTable->indexer->indexResultType); + } + + return result; +} + +bool Unifier2::unify(const MetatableType* subMetatable, const MetatableType* superMetatable) +{ + return unify(subMetatable->metatable, superMetatable->metatable) && unify(subMetatable->table, superMetatable->table); +} + // FIXME? This should probably return an ErrorVec or an optional // rather than a boolean to signal an occurs check failure. bool Unifier2::unify(TypePackId subTp, TypePackId superTp) @@ -69,6 +269,10 @@ bool Unifier2::unify(TypePackId subTp, TypePackId superTp) subTp = follow(subTp); superTp = follow(superTp); + if (seenTypePackPairings.contains({subTp, superTp})) + return true; + seenTypePackPairings.insert({subTp, superTp}); + const FreeTypePack* subFree = get(subTp); const FreeTypePack* superFree = get(superTp); @@ -103,12 +307,28 @@ bool Unifier2::unify(TypePackId subTp, TypePackId superTp) auto [subTypes, subTail] = extendTypePack(*arena, builtinTypes, subTp, maxLength); auto [superTypes, superTail] = extendTypePack(*arena, builtinTypes, superTp, maxLength); + // right-pad the subpack with nils if `superPack` is larger since that's what a function call does + if (subTypes.size() < maxLength) + { + for (size_t i = 0; i <= maxLength - subTypes.size(); i++) + subTypes.push_back(builtinTypes->nilType); + } + if (subTypes.size() < maxLength || superTypes.size() < maxLength) return true; for (size_t i = 0; i < maxLength; ++i) unify(subTypes[i], superTypes[i]); + if (!subTail || !superTail) + return true; + + TypePackId followedSubTail = follow(*subTail); + TypePackId followedSuperTail = follow(*superTail); + + if (get(followedSubTail) || get(followedSuperTail)) + return unify(followedSubTail, followedSuperTail); + return true; } @@ -141,8 +361,8 @@ struct FreeTypeSearcher : TypeVisitor } } - std::unordered_set negativeTypes; - std::unordered_set positiveTypes; + DenseHashMap negativeTypes{0}; + DenseHashMap positiveTypes{0}; bool visit(TypeId ty) override { @@ -158,16 +378,34 @@ struct FreeTypeSearcher : TypeVisitor switch (polarity) { case Positive: - positiveTypes.insert(ty); + positiveTypes[ty]++; break; case Negative: - negativeTypes.insert(ty); + negativeTypes[ty]++; break; } return true; } + bool visit(TypeId ty, const TableType& tt) override + { + if ((tt.state == TableState::Free || tt.state == TableState::Unsealed) && subsumes(scope, tt.scope)) + { + switch (polarity) + { + case Positive: + positiveTypes[ty]++; + break; + case Negative: + negativeTypes[ty]++; + break; + } + } + + return true; + } + bool visit(TypeId ty, const FunctionType& ft) override { flip(); @@ -185,14 +423,15 @@ struct MutatingGeneralizer : TypeOnceVisitor NotNull builtinTypes; NotNull scope; - std::unordered_set positiveTypes; - std::unordered_set negativeTypes; + DenseHashMap positiveTypes; + DenseHashMap negativeTypes; std::vector generics; + std::vector genericPacks; bool isWithinFunction = false; MutatingGeneralizer( - NotNull builtinTypes, NotNull scope, std::unordered_set positiveTypes, std::unordered_set negativeTypes) + NotNull builtinTypes, NotNull scope, DenseHashMap positiveTypes, DenseHashMap negativeTypes) : TypeOnceVisitor(/* skipBoundTypes */ true) , builtinTypes(builtinTypes) , scope(scope) @@ -263,10 +502,10 @@ struct MutatingGeneralizer : TypeOnceVisitor if (!ft) return false; - const bool isPositive = positiveTypes.count(ty); - const bool isNegative = negativeTypes.count(ty); + const bool positiveCount = getCount(positiveTypes, ty); + const bool negativeCount = getCount(negativeTypes, ty); - if (!isPositive && !isNegative) + if (!positiveCount && !negativeCount) return false; const bool hasLowerBound = !get(follow(ft->lowerBound)); @@ -277,13 +516,13 @@ struct MutatingGeneralizer : TypeOnceVisitor if (!hasLowerBound && !hasUpperBound) { - if (isWithinFunction) + if (!isWithinFunction || (positiveCount + negativeCount == 1)) + emplaceType(asMutable(ty), builtinTypes->unknownType); + else { emplaceType(asMutable(ty), scope); generics.push_back(ty); } - else - emplaceType(asMutable(ty), builtinTypes->unknownType); } // It is possible that this free type has other free types in its upper @@ -292,7 +531,7 @@ struct MutatingGeneralizer : TypeOnceVisitor // bound). // // If we do not do this, we get tautological bounds like a <: a <: unknown. - else if (isPositive && !hasUpperBound) + else if (positiveCount && !hasUpperBound) { TypeId lb = follow(ft->lowerBound); if (FreeType* lowerFree = getMutable(lb); lowerFree && lowerFree->upperBound == ty) @@ -319,9 +558,56 @@ struct MutatingGeneralizer : TypeOnceVisitor return false; } + + size_t getCount(const DenseHashMap& map, TypeId ty) + { + if (const size_t* count = map.find(ty)) + return *count; + else + return 0; + } + + bool visit(TypeId ty, const TableType&) override + { + const size_t positiveCount = getCount(positiveTypes, ty); + const size_t negativeCount = getCount(negativeTypes, ty); + + // FIXME: Free tables should probably just be replaced by upper bounds on free types. + // + // eg never <: 'a <: {x: number} & {z: boolean} + + if (!positiveCount && !negativeCount) + return true; + + TableType* tt = getMutable(ty); + LUAU_ASSERT(tt); + + // We only unseal tables if they occur within function argument or + // return lists. In principle, we could always seal tables when + // generalizing, but that would mean that we'd lose the ability to + // report the existence of unsealed tables via things like hovertype. + if (tt->state == TableState::Unsealed && !isWithinFunction) + return true; + + tt->state = TableState::Sealed; + + return true; + } + + bool visit(TypePackId tp, const FreeTypePack& ftp) override + { + if (!subsumes(scope, ftp.scope)) + return true; + + asMutable(tp)->ty.emplace(scope); + + genericPacks.push_back(tp); + + return true; + } }; -std::optional Unifier2::generalize(NotNull scope, TypeId ty) +std::optional Unifier2::generalize(TypeId ty) { ty = follow(ty); @@ -345,7 +631,10 @@ std::optional Unifier2::generalize(NotNull scope, TypeId ty) FunctionType* ftv = getMutable(follow(*res)); if (ftv) + { ftv->generics = std::move(gen.generics); + ftv->genericPacks = std::move(gen.genericPacks); + } return res; } diff --git a/CMakeLists.txt b/CMakeLists.txt index 15a1b8a57..1cda7ef4d 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -220,6 +220,8 @@ if(LUAU_BUILD_TESTS) target_compile_options(Luau.Conformance PRIVATE ${LUAU_OPTIONS}) target_include_directories(Luau.Conformance PRIVATE extern) target_link_libraries(Luau.Conformance PRIVATE Luau.Analysis Luau.Compiler Luau.CodeGen Luau.VM) + file(REAL_PATH "tests/conformance" LUAU_CONFORMANCE_SOURCE_DIR) + target_compile_definitions(Luau.Conformance PRIVATE LUAU_CONFORMANCE_SOURCE_DIR="${LUAU_CONFORMANCE_SOURCE_DIR}") target_compile_options(Luau.CLI.Test PRIVATE ${LUAU_OPTIONS}) target_include_directories(Luau.CLI.Test PRIVATE extern CLI) diff --git a/CodeGen/include/Luau/IrRegAllocX64.h b/CodeGen/include/Luau/IrRegAllocX64.h index 632499a46..2abba2873 100644 --- a/CodeGen/include/Luau/IrRegAllocX64.h +++ b/CodeGen/include/Luau/IrRegAllocX64.h @@ -99,6 +99,7 @@ struct ScopedRegX64 ScopedRegX64(const ScopedRegX64&) = delete; ScopedRegX64& operator=(const ScopedRegX64&) = delete; + void take(RegisterX64 reg); void alloc(SizeX64 size); void free(); diff --git a/CodeGen/include/Luau/IrVisitUseDef.h b/CodeGen/include/Luau/IrVisitUseDef.h new file mode 100644 index 000000000..8134e0d5b --- /dev/null +++ b/CodeGen/include/Luau/IrVisitUseDef.h @@ -0,0 +1,224 @@ +// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details +#pragma once + +#include "Luau/Common.h" +#include "Luau/IrData.h" + +namespace Luau +{ +namespace CodeGen +{ + +template +static void visitVmRegDefsUses(T& visitor, IrFunction& function, const IrInst& inst) +{ + // For correct analysis, all instruction uses must be handled before handling the definitions + switch (inst.cmd) + { + case IrCmd::LOAD_TAG: + case IrCmd::LOAD_POINTER: + case IrCmd::LOAD_DOUBLE: + case IrCmd::LOAD_INT: + case IrCmd::LOAD_TVALUE: + visitor.maybeUse(inst.a); // Argument can also be a VmConst + break; + case IrCmd::STORE_TAG: + case IrCmd::STORE_POINTER: + case IrCmd::STORE_DOUBLE: + case IrCmd::STORE_INT: + case IrCmd::STORE_VECTOR: + case IrCmd::STORE_TVALUE: + case IrCmd::STORE_SPLIT_TVALUE: + visitor.maybeDef(inst.a); // Argument can also be a pointer value + break; + case IrCmd::CMP_ANY: + visitor.use(inst.a); + visitor.use(inst.b); + break; + case IrCmd::JUMP_IF_TRUTHY: + case IrCmd::JUMP_IF_FALSY: + visitor.use(inst.a); + break; + // A <- B, C + case IrCmd::DO_ARITH: + case IrCmd::GET_TABLE: + visitor.use(inst.b); + visitor.maybeUse(inst.c); // Argument can also be a VmConst + + visitor.def(inst.a); + break; + case IrCmd::SET_TABLE: + visitor.use(inst.a); + visitor.use(inst.b); + visitor.maybeUse(inst.c); // Argument can also be a VmConst + break; + // A <- B + case IrCmd::DO_LEN: + visitor.use(inst.b); + + visitor.def(inst.a); + break; + case IrCmd::GET_IMPORT: + visitor.def(inst.a); + break; + case IrCmd::CONCAT: + visitor.useRange(vmRegOp(inst.a), function.uintOp(inst.b)); + + visitor.defRange(vmRegOp(inst.a), function.uintOp(inst.b)); + break; + case IrCmd::GET_UPVALUE: + visitor.def(inst.a); + break; + case IrCmd::SET_UPVALUE: + visitor.use(inst.b); + break; + case IrCmd::INTERRUPT: + break; + case IrCmd::BARRIER_OBJ: + case IrCmd::BARRIER_TABLE_FORWARD: + visitor.maybeUse(inst.b); + break; + case IrCmd::CLOSE_UPVALS: + // Closing an upvalue should be counted as a register use (it copies the fresh register value) + // But we lack the required information about the specific set of registers that are affected + // Because we don't plan to optimize captured registers atm, we skip full dataflow analysis for them right now + break; + case IrCmd::CAPTURE: + visitor.maybeUse(inst.a); + + if (function.uintOp(inst.b) == 1) + visitor.capture(vmRegOp(inst.a)); + break; + case IrCmd::SETLIST: + visitor.use(inst.b); + visitor.useRange(vmRegOp(inst.c), function.intOp(inst.d)); + break; + case IrCmd::CALL: + visitor.use(inst.a); + visitor.useRange(vmRegOp(inst.a) + 1, function.intOp(inst.b)); + + visitor.defRange(vmRegOp(inst.a), function.intOp(inst.c)); + break; + case IrCmd::RETURN: + visitor.useRange(vmRegOp(inst.a), function.intOp(inst.b)); + break; + + // TODO: FASTCALL is more restrictive than INVOKE_FASTCALL; we should either determine the exact semantics, or rework it + case IrCmd::FASTCALL: + case IrCmd::INVOKE_FASTCALL: + if (int count = function.intOp(inst.e); count != -1) + { + if (count >= 3) + { + LUAU_ASSERT(inst.d.kind == IrOpKind::VmReg && vmRegOp(inst.d) == vmRegOp(inst.c) + 1); + + visitor.useRange(vmRegOp(inst.c), count); + } + else + { + if (count >= 1) + visitor.use(inst.c); + + if (count >= 2) + visitor.maybeUse(inst.d); // Argument can also be a VmConst + } + } + else + { + visitor.useVarargs(vmRegOp(inst.c)); + } + + // Multiple return sequences (count == -1) are defined by ADJUST_STACK_TO_REG + if (int count = function.intOp(inst.f); count != -1) + visitor.defRange(vmRegOp(inst.b), count); + break; + case IrCmd::FORGLOOP: + // First register is not used by instruction, we check that it's still 'nil' with CHECK_TAG + visitor.use(inst.a, 1); + visitor.use(inst.a, 2); + + visitor.def(inst.a, 2); + visitor.defRange(vmRegOp(inst.a) + 3, function.intOp(inst.b)); + break; + case IrCmd::FORGLOOP_FALLBACK: + visitor.useRange(vmRegOp(inst.a), 3); + + visitor.def(inst.a, 2); + visitor.defRange(vmRegOp(inst.a) + 3, uint8_t(function.intOp(inst.b))); // ignore most significant bit + break; + case IrCmd::FORGPREP_XNEXT_FALLBACK: + visitor.use(inst.b); + break; + case IrCmd::FALLBACK_GETGLOBAL: + visitor.def(inst.b); + break; + case IrCmd::FALLBACK_SETGLOBAL: + visitor.use(inst.b); + break; + case IrCmd::FALLBACK_GETTABLEKS: + visitor.use(inst.c); + + visitor.def(inst.b); + break; + case IrCmd::FALLBACK_SETTABLEKS: + visitor.use(inst.b); + visitor.use(inst.c); + break; + case IrCmd::FALLBACK_NAMECALL: + visitor.use(inst.c); + + visitor.defRange(vmRegOp(inst.b), 2); + break; + case IrCmd::FALLBACK_PREPVARARGS: + // No effect on explicitly referenced registers + break; + case IrCmd::FALLBACK_GETVARARGS: + visitor.defRange(vmRegOp(inst.b), function.intOp(inst.c)); + break; + case IrCmd::FALLBACK_DUPCLOSURE: + visitor.def(inst.b); + break; + case IrCmd::FALLBACK_FORGPREP: + visitor.use(inst.b); + + visitor.defRange(vmRegOp(inst.b), 3); + break; + case IrCmd::ADJUST_STACK_TO_REG: + visitor.defRange(vmRegOp(inst.a), -1); + break; + case IrCmd::ADJUST_STACK_TO_TOP: + // While this can be considered to be a vararg consumer, it is already handled in fastcall instructions + break; + case IrCmd::GET_TYPEOF: + visitor.use(inst.a); + break; + + case IrCmd::FINDUPVAL: + visitor.use(inst.a); + break; + + default: + // All instructions which reference registers have to be handled explicitly + LUAU_ASSERT(inst.a.kind != IrOpKind::VmReg); + LUAU_ASSERT(inst.b.kind != IrOpKind::VmReg); + LUAU_ASSERT(inst.c.kind != IrOpKind::VmReg); + LUAU_ASSERT(inst.d.kind != IrOpKind::VmReg); + LUAU_ASSERT(inst.e.kind != IrOpKind::VmReg); + LUAU_ASSERT(inst.f.kind != IrOpKind::VmReg); + break; + } +} + +template +static void visitVmRegDefsUses(T& visitor, IrFunction& function, const IrBlock& block) +{ + for (uint32_t instIdx = block.start; instIdx <= block.finish; instIdx++) + { + IrInst& inst = function.instructions[instIdx]; + + visitVmRegDefsUses(visitor, function, inst); + } +} + +} // namespace CodeGen +} // namespace Luau diff --git a/CodeGen/src/CodeGenUtils.cpp b/CodeGen/src/CodeGenUtils.cpp index e2d5ac581..40a96845e 100644 --- a/CodeGen/src/CodeGenUtils.cpp +++ b/CodeGen/src/CodeGenUtils.cpp @@ -365,16 +365,9 @@ const Instruction* executeGETTABLEKS(lua_State* L, const Instruction* pc, StkId { Table* h = hvalue(rb); - int slot = LUAU_INSN_C(insn) & h->nodemask8; - LuaNode* n = &h->node[slot]; + // we ignore the fast path that checks for the cached slot since IrTranslation already checks for it. - // fast-path: value is in expected slot - if (LUAU_LIKELY(ttisstring(gkey(n)) && tsvalue(gkey(n)) == tsvalue(kv) && !ttisnil(gval(n)))) - { - setobj2s(L, ra, gval(n)); - return pc; - } - else if (!h->metatable) + if (!h->metatable) { // fast-path: value is not in expected slot, but the table lookup doesn't involve metatable const TValue* res = luaH_getstr(h, tsvalue(kv)); @@ -392,6 +385,7 @@ const Instruction* executeGETTABLEKS(lua_State* L, const Instruction* pc, StkId else { // slow-path, may invoke Lua calls via __index metamethod + int slot = LUAU_INSN_C(insn) & h->nodemask8; L->cachedslot = slot; VM_PROTECT(luaV_gettable(L, rb, kv, ra)); // save cachedslot to accelerate future lookups; patches currently executing instruction since pc-2 rolls back two pc++ diff --git a/CodeGen/src/IrAnalysis.cpp b/CodeGen/src/IrAnalysis.cpp index b14f14707..57cb22b29 100644 --- a/CodeGen/src/IrAnalysis.cpp +++ b/CodeGen/src/IrAnalysis.cpp @@ -4,6 +4,7 @@ #include "Luau/DenseHash.h" #include "Luau/IrData.h" #include "Luau/IrUtils.h" +#include "Luau/IrVisitUseDef.h" #include "lobject.h" @@ -186,211 +187,6 @@ void requireVariadicSequence(RegisterSet& sourceRs, const RegisterSet& defRs, ui } } -template -static void visitVmRegDefsUses(T& visitor, IrFunction& function, const IrBlock& block) -{ - for (uint32_t instIdx = block.start; instIdx <= block.finish; instIdx++) - { - IrInst& inst = function.instructions[instIdx]; - - // For correct analysis, all instruction uses must be handled before handling the definitions - switch (inst.cmd) - { - case IrCmd::LOAD_TAG: - case IrCmd::LOAD_POINTER: - case IrCmd::LOAD_DOUBLE: - case IrCmd::LOAD_INT: - case IrCmd::LOAD_TVALUE: - visitor.maybeUse(inst.a); // Argument can also be a VmConst - break; - case IrCmd::STORE_TAG: - case IrCmd::STORE_POINTER: - case IrCmd::STORE_DOUBLE: - case IrCmd::STORE_INT: - case IrCmd::STORE_VECTOR: - case IrCmd::STORE_TVALUE: - case IrCmd::STORE_SPLIT_TVALUE: - visitor.maybeDef(inst.a); // Argument can also be a pointer value - break; - case IrCmd::CMP_ANY: - visitor.use(inst.a); - visitor.use(inst.b); - break; - case IrCmd::JUMP_IF_TRUTHY: - case IrCmd::JUMP_IF_FALSY: - visitor.use(inst.a); - break; - // A <- B, C - case IrCmd::DO_ARITH: - case IrCmd::GET_TABLE: - visitor.use(inst.b); - visitor.maybeUse(inst.c); // Argument can also be a VmConst - - visitor.def(inst.a); - break; - case IrCmd::SET_TABLE: - visitor.use(inst.a); - visitor.use(inst.b); - visitor.maybeUse(inst.c); // Argument can also be a VmConst - break; - // A <- B - case IrCmd::DO_LEN: - visitor.use(inst.b); - - visitor.def(inst.a); - break; - case IrCmd::GET_IMPORT: - visitor.def(inst.a); - break; - case IrCmd::CONCAT: - visitor.useRange(vmRegOp(inst.a), function.uintOp(inst.b)); - - visitor.defRange(vmRegOp(inst.a), function.uintOp(inst.b)); - break; - case IrCmd::GET_UPVALUE: - visitor.def(inst.a); - break; - case IrCmd::SET_UPVALUE: - visitor.use(inst.b); - break; - case IrCmd::INTERRUPT: - break; - case IrCmd::BARRIER_OBJ: - case IrCmd::BARRIER_TABLE_FORWARD: - visitor.maybeUse(inst.b); - break; - case IrCmd::CLOSE_UPVALS: - // Closing an upvalue should be counted as a register use (it copies the fresh register value) - // But we lack the required information about the specific set of registers that are affected - // Because we don't plan to optimize captured registers atm, we skip full dataflow analysis for them right now - break; - case IrCmd::CAPTURE: - visitor.maybeUse(inst.a); - - if (function.uintOp(inst.b) == 1) - visitor.capture(vmRegOp(inst.a)); - break; - case IrCmd::SETLIST: - visitor.use(inst.b); - visitor.useRange(vmRegOp(inst.c), function.intOp(inst.d)); - break; - case IrCmd::CALL: - visitor.use(inst.a); - visitor.useRange(vmRegOp(inst.a) + 1, function.intOp(inst.b)); - - visitor.defRange(vmRegOp(inst.a), function.intOp(inst.c)); - break; - case IrCmd::RETURN: - visitor.useRange(vmRegOp(inst.a), function.intOp(inst.b)); - break; - - // TODO: FASTCALL is more restrictive than INVOKE_FASTCALL; we should either determine the exact semantics, or rework it - case IrCmd::FASTCALL: - case IrCmd::INVOKE_FASTCALL: - if (int count = function.intOp(inst.e); count != -1) - { - if (count >= 3) - { - LUAU_ASSERT(inst.d.kind == IrOpKind::VmReg && vmRegOp(inst.d) == vmRegOp(inst.c) + 1); - - visitor.useRange(vmRegOp(inst.c), count); - } - else - { - if (count >= 1) - visitor.use(inst.c); - - if (count >= 2) - visitor.maybeUse(inst.d); // Argument can also be a VmConst - } - } - else - { - visitor.useVarargs(vmRegOp(inst.c)); - } - - // Multiple return sequences (count == -1) are defined by ADJUST_STACK_TO_REG - if (int count = function.intOp(inst.f); count != -1) - visitor.defRange(vmRegOp(inst.b), count); - break; - case IrCmd::FORGLOOP: - // First register is not used by instruction, we check that it's still 'nil' with CHECK_TAG - visitor.use(inst.a, 1); - visitor.use(inst.a, 2); - - visitor.def(inst.a, 2); - visitor.defRange(vmRegOp(inst.a) + 3, function.intOp(inst.b)); - break; - case IrCmd::FORGLOOP_FALLBACK: - visitor.useRange(vmRegOp(inst.a), 3); - - visitor.def(inst.a, 2); - visitor.defRange(vmRegOp(inst.a) + 3, uint8_t(function.intOp(inst.b))); // ignore most significant bit - break; - case IrCmd::FORGPREP_XNEXT_FALLBACK: - visitor.use(inst.b); - break; - case IrCmd::FALLBACK_GETGLOBAL: - visitor.def(inst.b); - break; - case IrCmd::FALLBACK_SETGLOBAL: - visitor.use(inst.b); - break; - case IrCmd::FALLBACK_GETTABLEKS: - visitor.use(inst.c); - - visitor.def(inst.b); - break; - case IrCmd::FALLBACK_SETTABLEKS: - visitor.use(inst.b); - visitor.use(inst.c); - break; - case IrCmd::FALLBACK_NAMECALL: - visitor.use(inst.c); - - visitor.defRange(vmRegOp(inst.b), 2); - break; - case IrCmd::FALLBACK_PREPVARARGS: - // No effect on explicitly referenced registers - break; - case IrCmd::FALLBACK_GETVARARGS: - visitor.defRange(vmRegOp(inst.b), function.intOp(inst.c)); - break; - case IrCmd::FALLBACK_DUPCLOSURE: - visitor.def(inst.b); - break; - case IrCmd::FALLBACK_FORGPREP: - visitor.use(inst.b); - - visitor.defRange(vmRegOp(inst.b), 3); - break; - case IrCmd::ADJUST_STACK_TO_REG: - visitor.defRange(vmRegOp(inst.a), -1); - break; - case IrCmd::ADJUST_STACK_TO_TOP: - // While this can be considered to be a vararg consumer, it is already handled in fastcall instructions - break; - case IrCmd::GET_TYPEOF: - visitor.use(inst.a); - break; - - case IrCmd::FINDUPVAL: - visitor.use(inst.a); - break; - - default: - // All instructions which reference registers have to be handled explicitly - LUAU_ASSERT(inst.a.kind != IrOpKind::VmReg); - LUAU_ASSERT(inst.b.kind != IrOpKind::VmReg); - LUAU_ASSERT(inst.c.kind != IrOpKind::VmReg); - LUAU_ASSERT(inst.d.kind != IrOpKind::VmReg); - LUAU_ASSERT(inst.e.kind != IrOpKind::VmReg); - LUAU_ASSERT(inst.f.kind != IrOpKind::VmReg); - break; - } - } -} - struct BlockVmRegLiveInComputation { BlockVmRegLiveInComputation(RegisterSet& defRs, std::bitset<256>& capturedRegs) diff --git a/CodeGen/src/IrLoweringX64.cpp b/CodeGen/src/IrLoweringX64.cpp index 03ae4f0c1..a9bbd8831 100644 --- a/CodeGen/src/IrLoweringX64.cpp +++ b/CodeGen/src/IrLoweringX64.cpp @@ -1431,77 +1431,142 @@ void IrLoweringX64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next) break; case IrCmd::BITLSHIFT_UINT: { - // Custom bit shift value can only be placed in cl - ScopedRegX64 shiftTmp{regs, regs.takeReg(ecx, kInvalidInstIdx)}; + ScopedRegX64 shiftTmp{regs}; - inst.regX64 = regs.allocReg(SizeX64::dword, index); + // Custom bit shift value can only be placed in cl + // but we use it if the shift value is not a constant stored in b + if (inst.b.kind != IrOpKind::Constant) + shiftTmp.take(ecx); - build.mov(shiftTmp.reg, memRegUintOp(inst.b)); + inst.regX64 = regs.allocRegOrReuse(SizeX64::dword, index, {inst.a}); if (inst.a.kind != IrOpKind::Inst || inst.regX64 != regOp(inst.a)) build.mov(inst.regX64, memRegUintOp(inst.a)); - build.shl(inst.regX64, byteReg(shiftTmp.reg)); + if (inst.b.kind == IrOpKind::Constant) + { + // if shift value is a constant, we extract the byte-sized shift amount + int8_t shift = int8_t(unsigned(intOp(inst.b))); + build.shl(inst.regX64, shift); + } + else + { + build.mov(shiftTmp.reg, memRegUintOp(inst.b)); + build.shl(inst.regX64, byteReg(shiftTmp.reg)); + } + break; } case IrCmd::BITRSHIFT_UINT: { - // Custom bit shift value can only be placed in cl - ScopedRegX64 shiftTmp{regs, regs.takeReg(ecx, kInvalidInstIdx)}; + ScopedRegX64 shiftTmp{regs}; - inst.regX64 = regs.allocReg(SizeX64::dword, index); + // Custom bit shift value can only be placed in cl + // but we use it if the shift value is not a constant stored in b + if (inst.b.kind != IrOpKind::Constant) + shiftTmp.take(ecx); - build.mov(shiftTmp.reg, memRegUintOp(inst.b)); + inst.regX64 = regs.allocRegOrReuse(SizeX64::dword, index, {inst.a}); if (inst.a.kind != IrOpKind::Inst || inst.regX64 != regOp(inst.a)) build.mov(inst.regX64, memRegUintOp(inst.a)); - build.shr(inst.regX64, byteReg(shiftTmp.reg)); + if (inst.b.kind == IrOpKind::Constant) + { + // if shift value is a constant, we extract the byte-sized shift amount + int8_t shift = int8_t(unsigned(intOp(inst.b))); + build.shr(inst.regX64, shift); + } + else + { + build.mov(shiftTmp.reg, memRegUintOp(inst.b)); + build.shr(inst.regX64, byteReg(shiftTmp.reg)); + } + break; } case IrCmd::BITARSHIFT_UINT: { - // Custom bit shift value can only be placed in cl - ScopedRegX64 shiftTmp{regs, regs.takeReg(ecx, kInvalidInstIdx)}; + ScopedRegX64 shiftTmp{regs}; - inst.regX64 = regs.allocReg(SizeX64::dword, index); + // Custom bit shift value can only be placed in cl + // but we use it if the shift value is not a constant stored in b + if (inst.b.kind != IrOpKind::Constant) + shiftTmp.take(ecx); - build.mov(shiftTmp.reg, memRegUintOp(inst.b)); + inst.regX64 = regs.allocRegOrReuse(SizeX64::dword, index, {inst.a}); if (inst.a.kind != IrOpKind::Inst || inst.regX64 != regOp(inst.a)) build.mov(inst.regX64, memRegUintOp(inst.a)); - build.sar(inst.regX64, byteReg(shiftTmp.reg)); + if (inst.b.kind == IrOpKind::Constant) + { + // if shift value is a constant, we extract the byte-sized shift amount + int8_t shift = int8_t(unsigned(intOp(inst.b))); + build.sar(inst.regX64, shift); + } + else + { + build.mov(shiftTmp.reg, memRegUintOp(inst.b)); + build.sar(inst.regX64, byteReg(shiftTmp.reg)); + } + break; } case IrCmd::BITLROTATE_UINT: { - // Custom bit shift value can only be placed in cl - ScopedRegX64 shiftTmp{regs, regs.takeReg(ecx, kInvalidInstIdx)}; + ScopedRegX64 shiftTmp{regs}; - inst.regX64 = regs.allocReg(SizeX64::dword, index); + // Custom bit shift value can only be placed in cl + // but we use it if the shift value is not a constant stored in b + if (inst.b.kind != IrOpKind::Constant) + shiftTmp.take(ecx); - build.mov(shiftTmp.reg, memRegUintOp(inst.b)); + inst.regX64 = regs.allocRegOrReuse(SizeX64::dword, index, {inst.a}); if (inst.a.kind != IrOpKind::Inst || inst.regX64 != regOp(inst.a)) build.mov(inst.regX64, memRegUintOp(inst.a)); - build.rol(inst.regX64, byteReg(shiftTmp.reg)); + if (inst.b.kind == IrOpKind::Constant) + { + // if shift value is a constant, we extract the byte-sized shift amount + int8_t shift = int8_t(unsigned(intOp(inst.b))); + build.rol(inst.regX64, shift); + } + else + { + build.mov(shiftTmp.reg, memRegUintOp(inst.b)); + build.rol(inst.regX64, byteReg(shiftTmp.reg)); + } + break; } case IrCmd::BITRROTATE_UINT: { - // Custom bit shift value can only be placed in cl - ScopedRegX64 shiftTmp{regs, regs.takeReg(ecx, kInvalidInstIdx)}; + ScopedRegX64 shiftTmp{regs}; - inst.regX64 = regs.allocReg(SizeX64::dword, index); + // Custom bit shift value can only be placed in cl + // but we use it if the shift value is not a constant stored in b + if (inst.b.kind != IrOpKind::Constant) + shiftTmp.take(ecx); - build.mov(shiftTmp.reg, memRegUintOp(inst.b)); + inst.regX64 = regs.allocRegOrReuse(SizeX64::dword, index, {inst.a}); if (inst.a.kind != IrOpKind::Inst || inst.regX64 != regOp(inst.a)) build.mov(inst.regX64, memRegUintOp(inst.a)); - build.ror(inst.regX64, byteReg(shiftTmp.reg)); + if (inst.b.kind == IrOpKind::Constant) + { + // if shift value is a constant, we extract the byte-sized shift amount + int8_t shift = int8_t(unsigned(intOp(inst.b))); + build.ror(inst.regX64, shift); + } + else + { + build.mov(shiftTmp.reg, memRegUintOp(inst.b)); + build.ror(inst.regX64, byteReg(shiftTmp.reg)); + } + break; } case IrCmd::BITCOUNTLZ_UINT: diff --git a/CodeGen/src/IrRegAllocX64.cpp b/CodeGen/src/IrRegAllocX64.cpp index 81cf2f4c9..d8278923e 100644 --- a/CodeGen/src/IrRegAllocX64.cpp +++ b/CodeGen/src/IrRegAllocX64.cpp @@ -463,6 +463,12 @@ ScopedRegX64::~ScopedRegX64() owner.freeReg(reg); } +void ScopedRegX64::take(RegisterX64 reg) +{ + LUAU_ASSERT(this->reg == noreg); + this->reg = owner.takeReg(reg, kInvalidInstIdx); +} + void ScopedRegX64::alloc(SizeX64 size) { LUAU_ASSERT(reg == noreg); diff --git a/CodeGen/src/IrTranslation.cpp b/CodeGen/src/IrTranslation.cpp index 132567895..4c3fcaa70 100644 --- a/CodeGen/src/IrTranslation.cpp +++ b/CodeGen/src/IrTranslation.cpp @@ -13,6 +13,7 @@ #include "ltm.h" LUAU_FASTFLAGVARIABLE(LuauImproveForN, false) +LUAU_FASTFLAG(LuauReduceStackSpills) namespace Luau { @@ -1384,36 +1385,74 @@ void translateInstNewClosure(IrBuilder& build, const Instruction* pc, int pcpos) Instruction uinsn = pc[ui + 1]; LUAU_ASSERT(LUAU_INSN_OP(uinsn) == LOP_CAPTURE); - IrOp dst = build.inst(IrCmd::GET_CLOSURE_UPVAL_ADDR, ncl, build.vmUpvalue(ui)); - - switch (LUAU_INSN_A(uinsn)) - { - case LCT_VAL: + if (FFlag::LuauReduceStackSpills) { - IrOp src = build.inst(IrCmd::LOAD_TVALUE, build.vmReg(LUAU_INSN_B(uinsn))); - build.inst(IrCmd::STORE_TVALUE, dst, src); - break; - } - - case LCT_REF: - { - IrOp src = build.inst(IrCmd::FINDUPVAL, build.vmReg(LUAU_INSN_B(uinsn))); - build.inst(IrCmd::STORE_POINTER, dst, src); - build.inst(IrCmd::STORE_TAG, dst, build.constTag(LUA_TUPVAL)); - break; + switch (LUAU_INSN_A(uinsn)) + { + case LCT_VAL: + { + IrOp src = build.inst(IrCmd::LOAD_TVALUE, build.vmReg(LUAU_INSN_B(uinsn))); + IrOp dst = build.inst(IrCmd::GET_CLOSURE_UPVAL_ADDR, ncl, build.vmUpvalue(ui)); + build.inst(IrCmd::STORE_TVALUE, dst, src); + break; + } + + case LCT_REF: + { + IrOp src = build.inst(IrCmd::FINDUPVAL, build.vmReg(LUAU_INSN_B(uinsn))); + IrOp dst = build.inst(IrCmd::GET_CLOSURE_UPVAL_ADDR, ncl, build.vmUpvalue(ui)); + build.inst(IrCmd::STORE_POINTER, dst, src); + build.inst(IrCmd::STORE_TAG, dst, build.constTag(LUA_TUPVAL)); + break; + } + + case LCT_UPVAL: + { + IrOp src = build.inst(IrCmd::GET_CLOSURE_UPVAL_ADDR, build.undef(), build.vmUpvalue(LUAU_INSN_B(uinsn))); + IrOp dst = build.inst(IrCmd::GET_CLOSURE_UPVAL_ADDR, ncl, build.vmUpvalue(ui)); + IrOp load = build.inst(IrCmd::LOAD_TVALUE, src); + build.inst(IrCmd::STORE_TVALUE, dst, load); + break; + } + + default: + LUAU_ASSERT(!"Unknown upvalue capture type"); + LUAU_UNREACHABLE(); // improves switch() codegen by eliding opcode bounds checks + } } - - case LCT_UPVAL: + else { - IrOp src = build.inst(IrCmd::GET_CLOSURE_UPVAL_ADDR, build.undef(), build.vmUpvalue(LUAU_INSN_B(uinsn))); - IrOp load = build.inst(IrCmd::LOAD_TVALUE, src); - build.inst(IrCmd::STORE_TVALUE, dst, load); - break; - } - - default: - LUAU_ASSERT(!"Unknown upvalue capture type"); - LUAU_UNREACHABLE(); // improves switch() codegen by eliding opcode bounds checks + IrOp dst = build.inst(IrCmd::GET_CLOSURE_UPVAL_ADDR, ncl, build.vmUpvalue(ui)); + + switch (LUAU_INSN_A(uinsn)) + { + case LCT_VAL: + { + IrOp src = build.inst(IrCmd::LOAD_TVALUE, build.vmReg(LUAU_INSN_B(uinsn))); + build.inst(IrCmd::STORE_TVALUE, dst, src); + break; + } + + case LCT_REF: + { + IrOp src = build.inst(IrCmd::FINDUPVAL, build.vmReg(LUAU_INSN_B(uinsn))); + build.inst(IrCmd::STORE_POINTER, dst, src); + build.inst(IrCmd::STORE_TAG, dst, build.constTag(LUA_TUPVAL)); + break; + } + + case LCT_UPVAL: + { + IrOp src = build.inst(IrCmd::GET_CLOSURE_UPVAL_ADDR, build.undef(), build.vmUpvalue(LUAU_INSN_B(uinsn))); + IrOp load = build.inst(IrCmd::LOAD_TVALUE, src); + build.inst(IrCmd::STORE_TVALUE, dst, load); + break; + } + + default: + LUAU_ASSERT(!"Unknown upvalue capture type"); + LUAU_UNREACHABLE(); // improves switch() codegen by eliding opcode bounds checks + } } } diff --git a/CodeGen/src/IrValueLocationTracking.cpp b/CodeGen/src/IrValueLocationTracking.cpp index 04c210d90..20dee34a5 100644 --- a/CodeGen/src/IrValueLocationTracking.cpp +++ b/CodeGen/src/IrValueLocationTracking.cpp @@ -1,6 +1,10 @@ // This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details #include "IrValueLocationTracking.h" +#include "Luau/IrUtils.h" + +LUAU_FASTFLAGVARIABLE(LuauReduceStackSpills, false) + namespace Luau { namespace CodeGen @@ -23,13 +27,16 @@ void IrValueLocationTracking::beforeInstLowering(IrInst& inst) switch (inst.cmd) { case IrCmd::STORE_TAG: + // Tag update is a bit tricky, restore operations of values are not affected + invalidateRestoreOp(inst.a, /*skipValueInvalidation*/ true); + break; case IrCmd::STORE_POINTER: case IrCmd::STORE_DOUBLE: case IrCmd::STORE_INT: case IrCmd::STORE_VECTOR: case IrCmd::STORE_TVALUE: case IrCmd::STORE_SPLIT_TVALUE: - invalidateRestoreOp(inst.a); + invalidateRestoreOp(inst.a, /*skipValueInvalidation*/ false); break; case IrCmd::ADJUST_STACK_TO_REG: invalidateRestoreVmRegs(vmRegOp(inst.a), -1); @@ -46,13 +53,13 @@ void IrValueLocationTracking::beforeInstLowering(IrInst& inst) case IrCmd::DO_LEN: case IrCmd::GET_TABLE: case IrCmd::GET_IMPORT: - invalidateRestoreOp(inst.a); + invalidateRestoreOp(inst.a, /*skipValueInvalidation*/ false); break; case IrCmd::CONCAT: invalidateRestoreVmRegs(vmRegOp(inst.a), function.uintOp(inst.b)); break; case IrCmd::GET_UPVALUE: - invalidateRestoreOp(inst.a); + invalidateRestoreOp(inst.a, /*skipValueInvalidation*/ false); break; case IrCmd::CALL: // Even if result count is limited, all registers starting from function (ra) might be modified @@ -65,7 +72,7 @@ void IrValueLocationTracking::beforeInstLowering(IrInst& inst) break; case IrCmd::FALLBACK_GETGLOBAL: case IrCmd::FALLBACK_GETTABLEKS: - invalidateRestoreOp(inst.b); + invalidateRestoreOp(inst.b, /*skipValueInvalidation*/ false); break; case IrCmd::FALLBACK_NAMECALL: invalidateRestoreVmRegs(vmRegOp(inst.b), 2); @@ -74,7 +81,7 @@ void IrValueLocationTracking::beforeInstLowering(IrInst& inst) invalidateRestoreVmRegs(vmRegOp(inst.b), function.intOp(inst.c)); break; case IrCmd::FALLBACK_DUPCLOSURE: - invalidateRestoreOp(inst.b); + invalidateRestoreOp(inst.b, /*skipValueInvalidation*/ false); break; case IrCmd::FALLBACK_FORGPREP: invalidateRestoreVmRegs(vmRegOp(inst.b), 3); @@ -180,7 +187,7 @@ void IrValueLocationTracking::recordRestoreOp(uint32_t instIdx, IrOp location) } } -void IrValueLocationTracking::invalidateRestoreOp(IrOp location) +void IrValueLocationTracking::invalidateRestoreOp(IrOp location, bool skipValueInvalidation) { if (location.kind == IrOpKind::VmReg) { @@ -190,6 +197,20 @@ void IrValueLocationTracking::invalidateRestoreOp(IrOp location) { IrInst& inst = function.instructions[instIdx]; + // If we are only modifying the tag, we can avoid invalidating tracked location of values + if (FFlag::LuauReduceStackSpills && skipValueInvalidation) + { + switch (getCmdValueKind(inst.cmd)) + { + case IrValueKind::Double: + case IrValueKind::Pointer: + case IrValueKind::Int: + return; + default: + break; + } + } + // If instruction value is spilled and memory location is about to be lost, it has to be restored immediately if (inst.needsReload) restoreCallback(restoreCallbackCtx, inst); @@ -215,7 +236,7 @@ void IrValueLocationTracking::invalidateRestoreVmRegs(int start, int count) end = maxReg; for (int reg = start; reg <= end; reg++) - invalidateRestoreOp(IrOp{IrOpKind::VmReg, uint8_t(reg)}); + invalidateRestoreOp(IrOp{IrOpKind::VmReg, uint8_t(reg)}, /*skipValueInvalidation*/ false); } } // namespace CodeGen diff --git a/CodeGen/src/IrValueLocationTracking.h b/CodeGen/src/IrValueLocationTracking.h index 0343de7ca..5ce9c23f3 100644 --- a/CodeGen/src/IrValueLocationTracking.h +++ b/CodeGen/src/IrValueLocationTracking.h @@ -20,7 +20,7 @@ struct IrValueLocationTracking void afterInstLowering(IrInst& inst, uint32_t instIdx); void recordRestoreOp(uint32_t instIdx, IrOp location); - void invalidateRestoreOp(IrOp location); + void invalidateRestoreOp(IrOp location, bool skipValueInvalidation); void invalidateRestoreVmRegs(int start, int count); IrFunction& function; diff --git a/Sources.cmake b/Sources.cmake index ddd514f57..fdc27f9c3 100644 --- a/Sources.cmake +++ b/Sources.cmake @@ -82,6 +82,7 @@ target_sources(Luau.CodeGen PRIVATE CodeGen/include/Luau/IrData.h CodeGen/include/Luau/IrRegAllocX64.h CodeGen/include/Luau/IrUtils.h + CodeGen/include/Luau/IrVisitUseDef.h CodeGen/include/Luau/Label.h CodeGen/include/Luau/OperandX64.h CodeGen/include/Luau/OptimizeConstProp.h diff --git a/VM/src/ldo.cpp b/VM/src/ldo.cpp index 69d3c1280..f96e5f16e 100644 --- a/VM/src/ldo.cpp +++ b/VM/src/ldo.cpp @@ -17,8 +17,6 @@ #include -LUAU_FASTFLAGVARIABLE(LuauPCallDebuggerFix, false) - /* ** {====================================================== ** Error-recovery functions @@ -584,7 +582,7 @@ int luaD_pcall(lua_State* L, Pfunc func, void* u, ptrdiff_t old_top, ptrdiff_t e L->nCcalls = oldnCcalls; // an error occurred, check if we have a protected error callback - if ((!FFlag::LuauPCallDebuggerFix || yieldable) && L->global->cb.debugprotectederror) + if (yieldable && L->global->cb.debugprotectederror) { L->global->cb.debugprotectederror(L); diff --git a/VM/src/loslib.cpp b/VM/src/loslib.cpp index 9b10229e3..5e69bae21 100644 --- a/VM/src/loslib.cpp +++ b/VM/src/loslib.cpp @@ -25,12 +25,18 @@ static time_t timegm(struct tm* timep) #elif defined(__FreeBSD__) static tm* gmtime_r(const time_t* timep, tm* result) { - return gmtime_s(timep, result) == 0 ? result : NULL; + // Note: return is reversed from Windows (0 is success on Windows, but 0/null is failure elsewhere) + // Windows https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/gmtime-s-gmtime32-s-gmtime64-s?view=msvc-170#return-value + // Everyone else https://en.cppreference.com/w/c/chrono/gmtime + return gmtime_s(timep, result); } static tm* localtime_r(const time_t* timep, tm* result) { - return localtime_s(timep, result) == 0 ? result : NULL; + // Note: return is reversed from Windows (0 is success on Windows, but 0/null is failure elsewhere) + // Windows https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/localtime-s-localtime32-s-localtime64-s?view=msvc-170#return-value + // Everyone else https://en.cppreference.com/w/c/chrono/localtime + return localtime_s(timep, result); } static time_t timegm(struct tm* timep) diff --git a/tests/AstQuery.test.cpp b/tests/AstQuery.test.cpp index 723e107e0..6570ec1c0 100644 --- a/tests/AstQuery.test.cpp +++ b/tests/AstQuery.test.cpp @@ -297,7 +297,6 @@ TEST_CASE_FIXTURE(Fixture, "include_types_ancestry") TEST_CASE_FIXTURE(Fixture, "find_name_ancestry") { - ScopedFastFlag sff{"FixFindBindingAtFunctionName", true}; check(R"( local tbl = {} function tbl:abc() end @@ -312,7 +311,6 @@ TEST_CASE_FIXTURE(Fixture, "find_name_ancestry") TEST_CASE_FIXTURE(Fixture, "find_expr_ancestry") { - ScopedFastFlag sff{"FixFindBindingAtFunctionName", true}; check(R"( local tbl = {} function tbl:abc() end diff --git a/tests/Conformance.test.cpp b/tests/Conformance.test.cpp index c8918954c..f731eaea8 100644 --- a/tests/Conformance.test.cpp +++ b/tests/Conformance.test.cpp @@ -23,7 +23,6 @@ extern bool verbose; extern bool codegen; extern int optimizationLevel; -LUAU_FASTFLAG(LuauPCallDebuggerFix); LUAU_FASTFLAG(LuauFloorDivision); static lua_CompileOptions defaultOptions() @@ -146,12 +145,19 @@ using StateRef = std::unique_ptr; static StateRef runConformance(const char* name, void (*setup)(lua_State* L) = nullptr, void (*yield)(lua_State* L) = nullptr, lua_State* initialLuaState = nullptr, lua_CompileOptions* options = nullptr, bool skipCodegen = false) { +#ifdef LUAU_CONFORMANCE_SOURCE_DIR + std::string path = LUAU_CONFORMANCE_SOURCE_DIR; + path += "/"; + path += name; +#else std::string path = __FILE__; path.erase(path.find_last_of("\\/")); path += "/conformance/"; path += name; +#endif std::fstream stream(path, std::ios::in | std::ios::binary); + INFO(path); REQUIRE(stream); std::string source(std::istreambuf_iterator(stream), {}); @@ -1243,30 +1249,7 @@ TEST_CASE("TagMethodError") // when doLuaBreak is true the test additionally calls lua_break to ensure breaking the debugger doesn't cause the VM to crash for (bool doLuaBreak : {false, true}) { - std::optional sff; - if (doLuaBreak) - { - // If doLuaBreak is true then LuauPCallDebuggerFix must be enabled to avoid crashing the tests. - sff = {"LuauPCallDebuggerFix", true}; - } - - if (FFlag::LuauPCallDebuggerFix) - { - expectedHits = {22, 32}; - } - else - { - expectedHits = { - 9, - 17, - 17, - 22, - 27, - 27, - 32, - 37, - }; - } + expectedHits = {22, 32}; static int index; static bool luaBreak; diff --git a/tests/ConstraintGraphBuilderFixture.cpp b/tests/ConstraintGraphBuilderFixture.cpp index 6c1b6fddc..88477b9b3 100644 --- a/tests/ConstraintGraphBuilderFixture.cpp +++ b/tests/ConstraintGraphBuilderFixture.cpp @@ -12,7 +12,6 @@ ConstraintGraphBuilderFixture::ConstraintGraphBuilderFixture() mainModule->name = "MainModule"; mainModule->humanReadableName = "MainModule"; - BlockedType::DEPRECATED_nextIndex = 0; BlockedTypePack::nextIndex = 0; } diff --git a/tests/ConstraintSolver.test.cpp b/tests/ConstraintSolver.test.cpp index eaa0d41a2..32cb3cda0 100644 --- a/tests/ConstraintSolver.test.cpp +++ b/tests/ConstraintSolver.test.cpp @@ -4,6 +4,8 @@ #include "Fixture.h" #include "doctest.h" +LUAU_FASTFLAG(DebugLuauDeferredConstraintResolution); + using namespace Luau; static TypeId requireBinding(Scope* scope, const char* name) @@ -57,7 +59,11 @@ TEST_CASE_FIXTURE(ConstraintGraphBuilderFixture, "proper_let_generalization") TypeId idType = requireBinding(rootScope, "b"); ToStringOptions opts; - CHECK("(a) -> number" == toString(idType, opts)); + + if (FFlag::DebugLuauDeferredConstraintResolution) + CHECK("(unknown) -> number" == toString(idType, opts)); + else + CHECK("(a) -> number" == toString(idType, opts)); } TEST_SUITE_END(); diff --git a/tests/Normalize.test.cpp b/tests/Normalize.test.cpp index 7bed110b9..8bbbaa395 100644 --- a/tests/Normalize.test.cpp +++ b/tests/Normalize.test.cpp @@ -876,10 +876,6 @@ TEST_CASE_FIXTURE(NormalizeFixture, "negations_of_tables") TEST_CASE_FIXTURE(NormalizeFixture, "normalize_blocked_types") { - ScopedFastFlag sff[]{ - {"LuauNormalizeBlockedTypes", true}, - }; - Type blocked{BlockedType{}}; const NormalizedType* norm = normalizer.normalize(&blocked); diff --git a/tests/Subtyping.test.cpp b/tests/Subtyping.test.cpp index ce418b712..b0347cc0b 100644 --- a/tests/Subtyping.test.cpp +++ b/tests/Subtyping.test.cpp @@ -63,6 +63,11 @@ struct SubtypeFixture : Fixture return arena.addType(TableType{std::move(props), std::nullopt, {}, TableState::Sealed}); } + TypeId idx(TypeId keyTy, TypeId valueTy) + { + return arena.addType(TableType{{}, TableIndexer{keyTy, valueTy}, {}, TableState::Sealed}); + } + // `&` TypeId meet(TypeId a, TypeId b) { @@ -99,6 +104,11 @@ struct SubtypeFixture : Fixture return ty; } + TypeId opt(TypeId ty) + { + return join(ty, builtinTypes->nilType); + } + TypeId cyclicTable(std::function&& cb) { TypeId res = arena.addType(GenericType{}); @@ -531,6 +541,23 @@ TEST_CASE_FIXTURE(SubtypeFixture, "(number, string) -> string (A) -> A <: (X) -> X + * A can be bound to X. + * + * (A) -> A (X) -> number + * A can be bound to X, but A number (A) -> A + * Only generics on the left side can be bound. + * number (A, B) -> boolean <: (X, X) -> boolean + * It is ok to bind both A and B to X. + * + * (A, A) -> boolean (X, Y) -> boolean + * A cannot be bound to both X and Y. + */ TEST_CASE_FIXTURE(SubtypeFixture, "() -> T <: () -> number") { CHECK_IS_SUBTYPE(genericNothingToTType, nothingToNumberType); @@ -636,7 +663,6 @@ TEST_CASE_FIXTURE(SubtypeFixture, "() -> () (A...) -> A...") CHECK_IS_NOT_SUBTYPE(nothingToNothingType, genericAsToAsType); } - TEST_CASE_FIXTURE(SubtypeFixture, "{} <: {}") { CHECK_IS_SUBTYPE(tbl({}), tbl({})); @@ -647,6 +673,11 @@ TEST_CASE_FIXTURE(SubtypeFixture, "{x: number} <: {}") CHECK_IS_SUBTYPE(tbl({{"x", builtinTypes->numberType}}), tbl({})); } +TEST_CASE_FIXTURE(SubtypeFixture, "{} numberType}})); +} + TEST_CASE_FIXTURE(SubtypeFixture, "{x: number} numberType}}), tbl({{"x", builtinTypes->stringType}})); @@ -972,22 +1003,25 @@ TEST_CASE_FIXTURE(SubtypeFixture, "unknown <: X") CHECK_MESSAGE(usingGrandChildScope.isSubtype, "Expected " << builtinTypes->unknownType << " <: " << genericX); } -/* - * (A) -> A <: (X) -> X - * A can be bound to X. - * - * (A) -> A (X) -> number - * A can be bound to X, but A number (A) -> A - * Only generics on the left side can be bound. - * number (A, B) -> boolean <: (X, X) -> boolean - * It is ok to bind both A and B to X. - * - * (A, A) -> boolean (X, Y) -> boolean - * A cannot be bound to both X and Y. - */ +TEST_IS_SUBTYPE(idx(builtinTypes->numberType, builtinTypes->numberType), tbl({})); +TEST_IS_NOT_SUBTYPE(tbl({}), idx(builtinTypes->numberType, builtinTypes->numberType)); + +TEST_IS_NOT_SUBTYPE(tbl({{"X", builtinTypes->numberType}}), idx(builtinTypes->numberType, builtinTypes->numberType)); +TEST_IS_NOT_SUBTYPE(idx(builtinTypes->numberType, builtinTypes->numberType), tbl({{"X", builtinTypes->numberType}})); + +TEST_IS_NOT_SUBTYPE(idx(join(builtinTypes->numberType, builtinTypes->stringType), builtinTypes->numberType), idx(builtinTypes->numberType, builtinTypes->numberType)); +TEST_IS_NOT_SUBTYPE(idx(builtinTypes->numberType, builtinTypes->numberType), idx(join(builtinTypes->numberType, builtinTypes->stringType), builtinTypes->numberType)); + +TEST_IS_NOT_SUBTYPE(idx(builtinTypes->numberType, join(builtinTypes->stringType, builtinTypes->numberType)), idx(builtinTypes->numberType, builtinTypes->numberType)); +TEST_IS_NOT_SUBTYPE(idx(builtinTypes->numberType, builtinTypes->numberType), idx(builtinTypes->numberType, join(builtinTypes->stringType, builtinTypes->numberType))); + +TEST_IS_NOT_SUBTYPE(tbl({{"X", builtinTypes->numberType}}), idx(builtinTypes->stringType, builtinTypes->numberType)); +TEST_IS_SUBTYPE(idx(builtinTypes->stringType, builtinTypes->numberType), tbl({{"X", builtinTypes->numberType}})); + +TEST_IS_NOT_SUBTYPE(tbl({{"X", opt(builtinTypes->numberType)}}), idx(builtinTypes->stringType, builtinTypes->numberType)); +TEST_IS_NOT_SUBTYPE(idx(builtinTypes->stringType, builtinTypes->numberType), tbl({{"X", opt(builtinTypes->numberType)}})); + +TEST_IS_SUBTYPE(tbl({{"X", builtinTypes->numberType}, {"Y", builtinTypes->numberType}}), tbl({{"X", builtinTypes->numberType}})); +TEST_IS_NOT_SUBTYPE(tbl({{"X", builtinTypes->numberType}}), tbl({{"X", builtinTypes->numberType}, {"Y", builtinTypes->numberType}})); TEST_SUITE_END(); diff --git a/tests/ToString.test.cpp b/tests/ToString.test.cpp index cb1576f8d..526ff0146 100644 --- a/tests/ToString.test.cpp +++ b/tests/ToString.test.cpp @@ -789,7 +789,10 @@ TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_include_self_param") auto ttv = get(follow(parentTy)); auto ftv = get(follow(ttv->props.at("method").type())); - CHECK_EQ("foo:method(self: a, arg: string): ()", toStringNamedFunction("foo:method", *ftv)); + if (FFlag::DebugLuauDeferredConstraintResolution) + CHECK_EQ("foo:method(self: unknown, arg: string): ()", toStringNamedFunction("foo:method", *ftv)); + else + CHECK_EQ("foo:method(self: a, arg: string): ()", toStringNamedFunction("foo:method", *ftv)); } TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_hide_self_param") @@ -814,7 +817,10 @@ TEST_CASE_FIXTURE(Fixture, "toStringNamedFunction_hide_self_param") auto ftv = get(methodTy); REQUIRE_MESSAGE(ftv, "Expected a function but got " << toString(methodTy, opts)); - CHECK_EQ("foo:method(arg: string): ()", toStringNamedFunction("foo:method", *ftv, opts)); + if (FFlag::DebugLuauDeferredConstraintResolution) + CHECK_EQ("foo:method(arg: string): ()", toStringNamedFunction("foo:method", *ftv, opts)); + else + CHECK_EQ("foo:method(arg: string): ()", toStringNamedFunction("foo:method", *ftv, opts)); } TEST_CASE_FIXTURE(Fixture, "tostring_unsee_ttv_if_array") diff --git a/tests/TypeFamily.test.cpp b/tests/TypeFamily.test.cpp index c7ab66dd5..efc6433a9 100644 --- a/tests/TypeFamily.test.cpp +++ b/tests/TypeFamily.test.cpp @@ -1,6 +1,7 @@ // This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details #include "Luau/TypeFamily.h" +#include "Luau/ConstraintSolver.h" #include "Luau/TxnLog.h" #include "Luau/Type.h" @@ -22,7 +23,7 @@ struct FamilyFixture : Fixture swapFamily = TypeFamily{/* name */ "Swap", /* reducer */ [](std::vector tys, std::vector tps, NotNull arena, NotNull builtins, - NotNull log, NotNull scope, NotNull normalizer) -> TypeFamilyReductionResult { + NotNull log, NotNull scope, NotNull normalizer, ConstraintSolver* solver) -> TypeFamilyReductionResult { LUAU_ASSERT(tys.size() == 1); TypeId param = log->follow(tys.at(0)); @@ -34,8 +35,8 @@ struct FamilyFixture : Fixture { return TypeFamilyReductionResult{builtins->stringType, false, {}, {}}; } - else if (log->get(param) || log->get(param) || log->get(param) || - log->get(param)) + else if (log->get(param) || log->get(param) || + log->get(param) || (solver && solver->hasUnresolvedConstraints(param))) { return TypeFamilyReductionResult{std::nullopt, false, {param}, {}}; } @@ -233,7 +234,8 @@ TEST_CASE_FIXTURE(Fixture, "internal_families_raise_errors") TEST_CASE_FIXTURE(BuiltinsFixture, "type_families_inhabited_with_normalization") { - ScopedFastFlag sff{"DebugLuauDeferredConstraintResolution", true}; + if (!FFlag::DebugLuauDeferredConstraintResolution) + return; CheckResult result = check(R"( local useGridConfig : any diff --git a/tests/TypeInfer.functions.test.cpp b/tests/TypeInfer.functions.test.cpp index dbd3f2580..036b073ba 100644 --- a/tests/TypeInfer.functions.test.cpp +++ b/tests/TypeInfer.functions.test.cpp @@ -1691,6 +1691,10 @@ TEST_CASE_FIXTURE(Fixture, "occurs_check_failure_in_function_return_type") TEST_CASE_FIXTURE(Fixture, "free_is_not_bound_to_unknown") { + // This test only makes sense for the old solver + if (FFlag::DebugLuauDeferredConstraintResolution) + return; + CheckResult result = check(R"( local function foo(f: (unknown) -> (), x) f(x) @@ -2095,6 +2099,10 @@ TEST_CASE_FIXTURE(BuiltinsFixture, "attempt_to_call_an_intersection_of_tables_wi TEST_CASE_FIXTURE(Fixture, "generic_packs_are_not_variadic") { + // This test is blocking CI until subtyping is complete. + if (!FFlag::DebugLuauDeferredConstraintResolution) + return; + ScopedFastFlag sff{"DebugLuauDeferredConstraintResolution", true}; CheckResult result = check(R"( diff --git a/tests/TypeInfer.generics.test.cpp b/tests/TypeInfer.generics.test.cpp index ea62f0bf8..ff7d9909d 100644 --- a/tests/TypeInfer.generics.test.cpp +++ b/tests/TypeInfer.generics.test.cpp @@ -1192,6 +1192,20 @@ end) LUAU_REQUIRE_NO_ERRORS(result); } +TEST_CASE_FIXTURE(Fixture, "apply_type_function_nested_generics3") +{ + // This minimization was useful for debugging a particular issue with + // cyclic types under local type inference. + + CheckResult result = check(R"( + local getReturnValue: (cb: () -> V) -> V = nil :: any + + local y = getReturnValue(function() return nil :: any end) + )"); + + LUAU_REQUIRE_NO_ERRORS(result); +} + TEST_CASE_FIXTURE(Fixture, "quantify_functions_even_if_they_have_an_explicit_generic") { CheckResult result = check(R"( diff --git a/tests/TypeInfer.loops.test.cpp b/tests/TypeInfer.loops.test.cpp index c7d2896c8..f04d9a111 100644 --- a/tests/TypeInfer.loops.test.cpp +++ b/tests/TypeInfer.loops.test.cpp @@ -34,6 +34,10 @@ TEST_CASE_FIXTURE(Fixture, "for_loop") TEST_CASE_FIXTURE(BuiltinsFixture, "iteration_no_table_passed") { + // This test may block CI if forced to run outside of DCR. + if (!FFlag::DebugLuauDeferredConstraintResolution) + return; + ScopedFastFlag sff{"DebugLuauDeferredConstraintResolution", true}; CheckResult result = check(R"( @@ -58,7 +62,9 @@ for a, b in t do end TEST_CASE_FIXTURE(BuiltinsFixture, "iteration_regression_issue_69967") { - ScopedFastFlag sff{"DebugLuauDeferredConstraintResolution", true}; + if (!FFlag::DebugLuauDeferredConstraintResolution) + return; + CheckResult result = check(R"( type Iterable = typeof(setmetatable( {}, diff --git a/tests/TypeInfer.oop.test.cpp b/tests/TypeInfer.oop.test.cpp index c589f1344..a56424a75 100644 --- a/tests/TypeInfer.oop.test.cpp +++ b/tests/TypeInfer.oop.test.cpp @@ -14,6 +14,8 @@ using namespace Luau; +LUAU_FASTFLAG(DebugLuauDeferredConstraintResolution); + TEST_SUITE_BEGIN("TypeInferOOP"); TEST_CASE_FIXTURE(Fixture, "dont_suggest_using_colon_rather_than_dot_if_not_defined_with_colon") @@ -337,7 +339,10 @@ TEST_CASE_FIXTURE(BuiltinsFixture, "augmenting_an_unsealed_table_with_a_metatabl end )"); - CHECK("{ @metatable { number: number }, { method: (a) -> string } }" == toString(requireType("B"), {true})); + if (FFlag::DebugLuauDeferredConstraintResolution) + CHECK("{ @metatable { number: number }, { method: (unknown) -> string } }" == toString(requireType("B"), {true})); + else + CHECK("{ @metatable { number: number }, { method: (a) -> string } }" == toString(requireType("B"), {true})); } TEST_CASE_FIXTURE(BuiltinsFixture, "react_style_oo") @@ -405,8 +410,11 @@ TEST_CASE_FIXTURE(BuiltinsFixture, "cycle_between_object_constructor_and_alias") CHECK_MESSAGE(get(follow(aliasType)), "Expected metatable type but got: " << toString(aliasType)); } -TEST_CASE_FIXTURE(BuiltinsFixture, "promise_type_error_too_complex") +TEST_CASE_FIXTURE(BuiltinsFixture, "promise_type_error_too_complex" * doctest::timeout(0.5)) { + // TODO: LTI changes to function call resolution have rendered this test impossibly slow + // shared self should fix it, but there may be other mitigations possible as well + REQUIRE(!FFlag::DebugLuauDeferredConstraintResolution); ScopedFastFlag sff{"LuauStacklessTypeClone2", true}; frontend.options.retainFullTypeGraphs = false; diff --git a/tests/TypeInfer.provisional.test.cpp b/tests/TypeInfer.provisional.test.cpp index d4dbfa919..dd474d43c 100644 --- a/tests/TypeInfer.provisional.test.cpp +++ b/tests/TypeInfer.provisional.test.cpp @@ -480,7 +480,11 @@ TEST_CASE_FIXTURE(Fixture, "dcr_can_partially_dispatch_a_constraint") // would append a new constraint number <: *blocked* to the constraint set // to be solved later. This should be faster and theoretically less prone // to cyclic constraint dependencies. - CHECK("(a, number) -> ()" == toString(requireType("prime_iter"))); + + if (FFlag::DebugLuauDeferredConstraintResolution) + CHECK("(unknown, number) -> ()" == toString(requireType("prime_iter"))); + else + CHECK("(a, number) -> ()" == toString(requireType("prime_iter"))); } TEST_CASE_FIXTURE(Fixture, "free_options_cannot_be_unified_together") diff --git a/tests/TypeInfer.refinements.test.cpp b/tests/TypeInfer.refinements.test.cpp index c42830aa3..bcaad238f 100644 --- a/tests/TypeInfer.refinements.test.cpp +++ b/tests/TypeInfer.refinements.test.cpp @@ -514,7 +514,11 @@ TEST_CASE_FIXTURE(Fixture, "free_type_is_equal_to_an_lvalue") LUAU_REQUIRE_NO_ERRORS(result); - CHECK_EQ(toString(requireTypeAtPosition({3, 33})), "a"); // a == b + if (FFlag::DebugLuauDeferredConstraintResolution) + CHECK_EQ(toString(requireTypeAtPosition({3, 33})), "unknown"); // a == b + else + CHECK_EQ(toString(requireTypeAtPosition({3, 33})), "a"); // a == b + CHECK_EQ(toString(requireTypeAtPosition({3, 36})), "string?"); // a == b } diff --git a/tests/TypeInfer.tables.test.cpp b/tests/TypeInfer.tables.test.cpp index aea382536..28cebabad 100644 --- a/tests/TypeInfer.tables.test.cpp +++ b/tests/TypeInfer.tables.test.cpp @@ -367,7 +367,7 @@ TEST_CASE_FIXTURE(Fixture, "open_table_unification_3") CHECK(arg0Table->props.count("baz")); } -TEST_CASE_FIXTURE(Fixture, "table_param_row_polymorphism_1") +TEST_CASE_FIXTURE(Fixture, "table_param_width_subtyping_1") { CheckResult result = check(R"( function foo(o) @@ -382,7 +382,7 @@ TEST_CASE_FIXTURE(Fixture, "table_param_row_polymorphism_1") LUAU_REQUIRE_NO_ERRORS(result); } -TEST_CASE_FIXTURE(Fixture, "table_param_row_polymorphism_2") +TEST_CASE_FIXTURE(Fixture, "table_param_width_subtyping_2") { CheckResult result = check(R"( --!strict @@ -403,7 +403,7 @@ TEST_CASE_FIXTURE(Fixture, "table_param_row_polymorphism_2") CHECK_EQ("baz", error->properties[0]); } -TEST_CASE_FIXTURE(Fixture, "table_param_row_polymorphism_3") +TEST_CASE_FIXTURE(Fixture, "table_param_width_subtyping_3") { CheckResult result = check(R"( local T = {} @@ -433,7 +433,7 @@ TEST_CASE_FIXTURE(Fixture, "table_param_row_polymorphism_3") } #if 0 -TEST_CASE_FIXTURE(Fixture, "table_param_row_polymorphism_2") +TEST_CASE_FIXTURE(Fixture, "table_param_width_subtyping_2") { CheckResult result = check(R"( function id(x) diff --git a/tests/TypeInfer.test.cpp b/tests/TypeInfer.test.cpp index 2d34fc7f9..aa25b300f 100644 --- a/tests/TypeInfer.test.cpp +++ b/tests/TypeInfer.test.cpp @@ -94,6 +94,9 @@ TEST_CASE_FIXTURE(Fixture, "infer_locals_via_assignment_from_its_call_site") } TEST_CASE_FIXTURE(Fixture, "interesting_local_type_inference_case") { + if (!FFlag::DebugLuauDeferredConstraintResolution) + return; + ScopedFastFlag sff[] = { {"DebugLuauDeferredConstraintResolution", true}, }; @@ -1086,7 +1089,7 @@ TEST_CASE_FIXTURE(Fixture, "type_infer_recursion_limit_normalizer") CHECK(1 == result.errors.size()); CHECK(Location{{3, 12}, {3, 46}} == result.errors[0].location); - CHECK_EQ("Internal error: Code is too complex to typecheck! Consider adding type annotations around this area", toString(result.errors[0])); + CHECK_EQ("Code is too complex to typecheck! Consider simplifying the code around this area", toString(result.errors[0])); } TEST_CASE_FIXTURE(Fixture, "type_infer_cache_limit_normalizer") @@ -1099,7 +1102,7 @@ TEST_CASE_FIXTURE(Fixture, "type_infer_cache_limit_normalizer") )"); LUAU_REQUIRE_ERRORS(result); - CHECK_EQ("Internal error: Code is too complex to typecheck! Consider adding type annotations around this area", toString(result.errors[0])); + CHECK_EQ("Code is too complex to typecheck! Consider simplifying the code around this area", toString(result.errors[0])); } TEST_CASE_FIXTURE(Fixture, "follow_on_new_types_in_substitution") diff --git a/tests/TypeInfer.unknownnever.test.cpp b/tests/TypeInfer.unknownnever.test.cpp index 038594469..fc7f9707e 100644 --- a/tests/TypeInfer.unknownnever.test.cpp +++ b/tests/TypeInfer.unknownnever.test.cpp @@ -311,7 +311,10 @@ TEST_CASE_FIXTURE(Fixture, "dont_unify_operands_if_one_of_the_operand_is_never_i LUAU_REQUIRE_NO_ERRORS(result); - CHECK_EQ("(nil, a) -> boolean", toString(requireType("ord"))); + if (FFlag::DebugLuauDeferredConstraintResolution) + CHECK_EQ("(nil, unknown) -> boolean", toString(requireType("ord"))); + else + CHECK_EQ("(nil, a) -> boolean", toString(requireType("ord"))); } TEST_CASE_FIXTURE(Fixture, "math_operators_and_never") diff --git a/tests/Unifier2.test.cpp b/tests/Unifier2.test.cpp index 2e6cf3b6b..8ccd25874 100644 --- a/tests/Unifier2.test.cpp +++ b/tests/Unifier2.test.cpp @@ -18,7 +18,7 @@ struct Unifier2Fixture BuiltinTypes builtinTypes; Scope scope{builtinTypes.anyTypePack}; InternalErrorReporter iceReporter; - Unifier2 u2{NotNull{&arena}, NotNull{&builtinTypes}, NotNull{&iceReporter}}; + Unifier2 u2{NotNull{&arena}, NotNull{&builtinTypes}, NotNull{&scope}, NotNull{&iceReporter}}; ToStringOptions opts; ScopedFastFlag sff{"DebugLuauDeferredConstraintResolution", true}; @@ -111,12 +111,12 @@ TEST_CASE_FIXTURE(Unifier2Fixture, "generalize_a_type_that_is_bounded_by_another ft2->upperBound = t1; ft2->lowerBound = builtinTypes.unknownType; - auto t2generalized = u2.generalize(NotNull{&scope}, t2); + auto t2generalized = u2.generalize(t2); REQUIRE(t2generalized); CHECK(follow(t1) == follow(t2)); - auto t1generalized = u2.generalize(NotNull{&scope}, t1); + auto t1generalized = u2.generalize(t1); REQUIRE(t1generalized); CHECK(builtinTypes.unknownType == follow(t1)); @@ -137,12 +137,12 @@ TEST_CASE_FIXTURE(Unifier2Fixture, "generalize_a_type_that_is_bounded_by_another ft2->upperBound = t1; ft2->lowerBound = builtinTypes.unknownType; - auto t1generalized = u2.generalize(NotNull{&scope}, t1); + auto t1generalized = u2.generalize(t1); REQUIRE(t1generalized); CHECK(follow(t1) == follow(t2)); - auto t2generalized = u2.generalize(NotNull{&scope}, t2); + auto t2generalized = u2.generalize(t2); REQUIRE(t2generalized); CHECK(builtinTypes.unknownType == follow(t1)); diff --git a/tests/VisitType.test.cpp b/tests/VisitType.test.cpp index 4fba694a8..a5e6322a2 100644 --- a/tests/VisitType.test.cpp +++ b/tests/VisitType.test.cpp @@ -8,9 +8,9 @@ using namespace Luau; -LUAU_FASTINT(LuauVisitRecursionLimit) +LUAU_FASTINT(LuauVisitRecursionLimit); -TEST_SUITE_BEGIN("VisitTypeVar"); +TEST_SUITE_BEGIN("VisitType"); TEST_CASE_FIXTURE(Fixture, "throw_when_limit_is_exceeded") { @@ -38,4 +38,21 @@ TEST_CASE_FIXTURE(Fixture, "dont_throw_when_limit_is_high_enough") (void)toString(tType); } +TEST_CASE_FIXTURE(Fixture, "some_free_types_do_not_have_bounds") +{ + Type t{FreeType{TypeLevel{}}}; + + (void)toString(&t); +} + +TEST_CASE_FIXTURE(Fixture, "some_free_types_have_bounds") +{ + ScopedFastFlag sff{"DebugLuauDeferredConstraintResolution", true}; + + Scope scope{builtinTypes->anyTypePack}; + Type t{FreeType{&scope, builtinTypes->neverType, builtinTypes->numberType}}; + + CHECK("('a <: number)" == toString(&t)); +} + TEST_SUITE_END(); diff --git a/tools/faillist.txt b/tools/faillist.txt index 69790ba5c..a3bf97a5c 100644 --- a/tools/faillist.txt +++ b/tools/faillist.txt @@ -1,14 +1,14 @@ AnnotationTests.infer_type_of_value_a_via_typeof_with_assignment -AnnotationTests.two_type_params AstQuery.last_argument_function_call_type +AstQuery::getDocumentationSymbolAtPosition.table_overloaded_function_prop AutocompleteTest.anonymous_autofilled_generic_on_argument_type_pack_vararg AutocompleteTest.anonymous_autofilled_generic_type_pack_vararg AutocompleteTest.autocomplete_interpolated_string_as_singleton AutocompleteTest.autocomplete_oop_implicit_self -AutocompleteTest.autocomplete_response_perf1 AutocompleteTest.autocomplete_string_singleton_escape AutocompleteTest.autocomplete_string_singletons AutocompleteTest.cyclic_table +AutocompleteTest.do_wrong_compatible_nonself_calls AutocompleteTest.suggest_external_module_type AutocompleteTest.type_correct_expected_argument_type_pack_suggestion AutocompleteTest.type_correct_expected_argument_type_suggestion @@ -21,62 +21,76 @@ AutocompleteTest.type_correct_suggestion_in_argument AutocompleteTest.unsealed_table_2 BuiltinTests.aliased_string_format BuiltinTests.assert_removes_falsy_types -BuiltinTests.assert_removes_falsy_types2 BuiltinTests.assert_removes_falsy_types_even_from_type_pack_tail_but_only_for_the_first_type BuiltinTests.assert_returns_false_and_string_iff_it_knows_the_first_argument_cannot_be_truthy BuiltinTests.bad_select_should_not_crash +BuiltinTests.coroutine_resume_anything_goes +BuiltinTests.debug_info_is_crazy +BuiltinTests.global_singleton_types_are_sealed +BuiltinTests.gmatch_capture_types +BuiltinTests.gmatch_capture_types2 +BuiltinTests.gmatch_capture_types_balanced_escaped_parens +BuiltinTests.gmatch_capture_types_default_capture +BuiltinTests.gmatch_capture_types_parens_in_sets_are_ignored +BuiltinTests.gmatch_capture_types_set_containing_lbracket +BuiltinTests.gmatch_definition +BuiltinTests.ipairs_iterator_should_infer_types_and_type_check BuiltinTests.next_iterator_should_infer_types_and_type_check +BuiltinTests.pairs_iterator_should_infer_types_and_type_check +BuiltinTests.see_thru_select +BuiltinTests.see_thru_select_count BuiltinTests.select_slightly_out_of_range BuiltinTests.select_way_out_of_range +BuiltinTests.select_with_decimal_argument_is_rounded_down BuiltinTests.set_metatable_needs_arguments BuiltinTests.setmetatable_should_not_mutate_persisted_types BuiltinTests.sort_with_bad_predicate -BuiltinTests.string_format_arg_types_inference +BuiltinTests.sort_with_predicate +BuiltinTests.string_format_arg_count_mismatch BuiltinTests.string_format_as_method BuiltinTests.string_format_correctly_ordered_types BuiltinTests.string_format_report_all_type_errors_at_correct_positions -BuiltinTests.string_format_tostring_specifier_type_constraint BuiltinTests.string_format_use_correct_argument2 BuiltinTests.table_dot_remove_optionally_returns_generic BuiltinTests.table_freeze_is_generic BuiltinTests.table_insert_correctly_infers_type_of_array_2_args_overload BuiltinTests.table_insert_correctly_infers_type_of_array_3_args_overload -BuiltinTests.table_pack -BuiltinTests.table_pack_reduce -BuiltinTests.table_pack_variadic +BuiltinTests.trivial_select +BuiltinTests.xpcall DefinitionTests.class_definition_indexer DefinitionTests.class_definition_overload_metamethods DefinitionTests.class_definition_string_props +DefinitionTests.definition_file_classes Differ.equal_generictp_cyclic -Differ.equal_table_A_B_C Differ.equal_table_cyclic_diamonds_unraveled -Differ.equal_table_kind_A -Differ.equal_table_kind_B -Differ.equal_table_kind_C -Differ.equal_table_kind_D -Differ.equal_table_measuring_tapes Differ.equal_table_two_shifted_circles_are_not_different -Differ.function_table_self_referential_cyclic Differ.generictp_normal Differ.generictp_normal_2 +Differ.left_cyclic_table_right_table_missing_property +Differ.left_cyclic_table_right_table_property_wrong +Differ.right_cyclic_table_left_table_property_wrong Differ.table_left_circle_right_measuring_tape GenericsTests.better_mismatch_error_messages -GenericsTests.bidirectional_checking_and_generalization_play_nice -GenericsTests.bound_tables_do_not_clone_original_fields +GenericsTests.check_generic_typepack_function GenericsTests.check_mutual_generic_functions GenericsTests.correctly_instantiate_polymorphic_member_functions GenericsTests.do_not_infer_generic_functions GenericsTests.dont_substitute_bound_types GenericsTests.generic_argument_count_too_few GenericsTests.generic_argument_count_too_many +GenericsTests.generic_functions_dont_cache_type_parameters GenericsTests.generic_functions_should_be_memory_safe GenericsTests.generic_type_pack_parentheses +GenericsTests.generic_type_pack_unification2 GenericsTests.higher_rank_polymorphism_should_not_accept_instantiated_arguments +GenericsTests.hof_subtype_instantiation_regression +GenericsTests.infer_generic_function_function_argument GenericsTests.infer_generic_function_function_argument_2 GenericsTests.infer_generic_function_function_argument_3 GenericsTests.infer_generic_function_function_argument_overloaded GenericsTests.infer_generic_lib_function_function_argument GenericsTests.infer_generic_property +GenericsTests.instantiate_cyclic_generic_function GenericsTests.instantiate_generic_function_in_assignments GenericsTests.instantiate_generic_function_in_assignments2 GenericsTests.instantiated_function_argument_names @@ -87,21 +101,31 @@ GenericsTests.quantify_functions_even_if_they_have_an_explicit_generic GenericsTests.self_recursive_instantiated_param IntersectionTypes.intersection_of_tables_with_top_properties IntersectionTypes.less_greedy_unification_with_intersection_types +IntersectionTypes.select_correct_union_fn +IntersectionTypes.should_still_pick_an_overload_whose_arguments_are_unions IntersectionTypes.table_intersection_write_sealed_indirect IntersectionTypes.table_write_sealed_indirect +Normalize.higher_order_function_with_annotation Normalize.negations_of_tables Normalize.specific_functions_cannot_be_negated ProvisionalTests.assign_table_with_refined_property_with_a_similar_type_is_illegal +ProvisionalTests.bail_early_if_unification_is_too_complicated +ProvisionalTests.choose_the_right_overload_for_pcall ProvisionalTests.do_not_ice_when_trying_to_pick_first_of_generic_type_pack ProvisionalTests.error_on_eq_metamethod_returning_a_type_other_than_boolean +ProvisionalTests.free_is_not_bound_to_any ProvisionalTests.free_options_can_be_unified_together ProvisionalTests.free_options_cannot_be_unified_together +ProvisionalTests.function_returns_many_things_but_first_of_it_is_forgotten +ProvisionalTests.generic_type_leak_to_module_interface ProvisionalTests.greedy_inference_with_shared_self_triggers_function_with_no_returns +ProvisionalTests.pcall_returns_at_least_two_value_but_function_returns_nothing ProvisionalTests.setmetatable_constrains_free_type_into_free_table ProvisionalTests.specialization_binds_with_prototypes_too_early ProvisionalTests.table_insert_with_a_singleton_argument ProvisionalTests.table_unification_infinite_recursion ProvisionalTests.typeguard_inference_incomplete +ProvisionalTests.xpcall_returns_what_f_returns RefinementTest.call_an_incompatible_function_after_using_typeguard RefinementTest.dataflow_analysis_can_tell_refinements_when_its_appropriate_to_refine_into_nil_or_never RefinementTest.discriminate_from_truthiness_of_x @@ -121,16 +145,13 @@ RefinementTest.x_as_any_if_x_is_instance_elseif_x_is_table TableTests.a_free_shape_can_turn_into_a_scalar_if_it_is_compatible TableTests.a_free_shape_cannot_turn_into_a_scalar_if_it_is_not_compatible TableTests.call_method -TableTests.cannot_augment_sealed_table TableTests.cannot_change_type_of_unsealed_table_prop -TableTests.casting_sealed_tables_with_props_into_table_with_indexer +TableTests.casting_tables_with_props_into_table_with_indexer3 TableTests.casting_tables_with_props_into_table_with_indexer4 TableTests.casting_unsealed_tables_with_props_into_table_with_indexer TableTests.checked_prop_too_early TableTests.cli_84607_missing_prop_in_array_or_dict TableTests.cyclic_shifted_tables -TableTests.defining_a_method_for_a_local_sealed_table_must_fail -TableTests.defining_a_self_method_for_a_local_sealed_table_must_fail TableTests.disallow_indexing_into_an_unsealed_table_with_no_indexer_in_strict_mode TableTests.dont_crash_when_setmetatable_does_not_produce_a_metatabletypevar TableTests.dont_extend_unsealed_tables_in_rvalue_position @@ -141,51 +162,49 @@ TableTests.dont_suggest_exact_match_keys TableTests.error_detailed_metatable_prop TableTests.explicitly_typed_table TableTests.explicitly_typed_table_with_indexer -TableTests.fuzz_table_unify_instantiated_table_with_prop_realloc TableTests.generalize_table_argument TableTests.generic_table_instantiation_potential_regression TableTests.give_up_after_one_metatable_index_look_up -TableTests.hide_table_error_properties TableTests.indexers_get_quantified_too -TableTests.indexing_from_a_table_should_prefer_properties_when_possible TableTests.inequality_operators_imply_exactly_matching_types TableTests.infer_array_2 -TableTests.infer_indexer_from_value_property_in_literal -TableTests.infer_type_when_indexing_from_a_table_indexer TableTests.inferred_return_type_of_free_table TableTests.instantiate_table_cloning_3 TableTests.leaking_bad_metatable_errors TableTests.less_exponential_blowup_please TableTests.missing_metatable_for_sealed_tables_do_not_get_inferred TableTests.mixed_tables_with_implicit_numbered_keys -TableTests.ok_to_add_property_to_free_table TableTests.ok_to_provide_a_subtype_during_construction TableTests.okay_to_add_property_to_unsealed_tables_by_assignment +TableTests.okay_to_add_property_to_unsealed_tables_by_function_call TableTests.oop_indexer_works TableTests.oop_polymorphic TableTests.pass_a_union_of_tables_to_a_function_that_requires_a_table TableTests.pass_a_union_of_tables_to_a_function_that_requires_a_table_2 -TableTests.pass_incompatible_union_to_a_generic_table_without_crashing -TableTests.passing_compatible_unions_to_a_generic_table_without_crashing TableTests.quantify_even_that_table_was_never_exported_at_all TableTests.quantify_metatables_of_metatables_of_table -TableTests.quantifying_a_bound_var_works TableTests.reasonable_error_when_adding_a_nonexistent_property_to_an_array_like_table TableTests.recursive_metatable_type_call TableTests.right_table_missing_key2 +TableTests.scalar_is_a_subtype_of_a_compatible_polymorphic_shape_type +TableTests.scalar_is_not_a_subtype_of_a_compatible_polymorphic_shape_type +TableTests.sealed_table_indexers_must_unify TableTests.shared_selfs TableTests.shared_selfs_from_free_param TableTests.shared_selfs_through_metatables TableTests.table_call_metamethod_basic +TableTests.table_param_width_subtyping_1 +TableTests.table_param_width_subtyping_2 +TableTests.table_param_width_subtyping_3 TableTests.table_simple_call TableTests.table_subtyping_with_extra_props_dont_report_multiple_errors TableTests.table_subtyping_with_missing_props_dont_report_multiple_errors TableTests.table_subtyping_with_missing_props_dont_report_multiple_errors2 -TableTests.table_unification_4 +TableTests.table_unifies_into_map TableTests.type_mismatch_on_massive_table_is_cut_short +TableTests.unifying_tables_shouldnt_uaf1 TableTests.used_colon_instead_of_dot TableTests.used_dot_instead_of_colon -TableTests.when_augmenting_an_unsealed_table_with_an_indexer_apply_the_correct_scope_to_the_indexer_type TableTests.wrong_assign_does_hit_indexer ToDot.function ToString.exhaustive_toString_of_cyclic_table @@ -196,9 +215,11 @@ ToString.toStringDetailed2 ToString.toStringErrorPack ToString.toStringGenericPack ToString.toStringNamedFunction_generic_pack +ToString.toStringNamedFunction_map TryUnifyTests.members_of_failed_typepack_unification_are_unified_with_errorType TryUnifyTests.result_of_failed_typepack_unification_is_constrained TryUnifyTests.typepack_unification_should_trim_free_tails +TryUnifyTests.variadics_should_use_reversed_properly TypeAliases.dont_lose_track_of_PendingExpansionTypes_after_substitution TypeAliases.generic_param_remap TypeAliases.mismatched_generic_type_param @@ -211,21 +232,28 @@ TypeAliases.type_alias_local_mutation TypeAliases.type_alias_local_rename TypeAliases.type_alias_locations TypeAliases.type_alias_of_an_imported_recursive_generic_type +TypeFamilyTests.add_family_at_work TypeFamilyTests.family_as_fn_arg +TypeFamilyTests.family_as_fn_ret +TypeFamilyTests.function_internal_families +TypeFamilyTests.internal_families_raise_errors TypeFamilyTests.table_internal_families TypeFamilyTests.unsolvable_family TypeInfer.be_sure_to_use_active_txnlog_when_evaluating_a_variadic_overload TypeInfer.bidirectional_checking_of_higher_order_function +TypeInfer.check_expr_recursion_limit TypeInfer.check_type_infer_recursion_count TypeInfer.cli_39932_use_unifier_in_ensure_methods TypeInfer.cli_50041_committing_txnlog_in_apollo_client_error TypeInfer.dont_report_type_errors_within_an_AstExprError TypeInfer.dont_report_type_errors_within_an_AstStatError -TypeInfer.follow_on_new_types_in_substitution TypeInfer.fuzz_free_table_type_change_during_index_check TypeInfer.infer_assignment_value_types_mutable_lval TypeInfer.infer_locals_via_assignment_from_its_call_site +TypeInfer.interesting_local_type_inference_case TypeInfer.no_stack_overflow_from_isoptional +TypeInfer.promote_tail_type_packs +TypeInfer.recursive_function_that_invokes_itself_with_a_refinement_of_its_parameter TypeInfer.recursive_function_that_invokes_itself_with_a_refinement_of_its_parameter_2 TypeInfer.tc_after_error_recovery_no_replacement_name_in_error TypeInfer.type_infer_cache_limit_normalizer @@ -241,11 +269,16 @@ TypeInferAnyError.for_in_loop_iterator_returns_any2 TypeInferAnyError.intersection_of_any_can_have_props TypeInferAnyError.replace_every_free_type_when_unifying_a_complex_function_with_any TypeInferAnyError.union_of_types_regression_test +TypeInferClasses.callable_classes TypeInferClasses.class_type_mismatch_with_name_conflict +TypeInferClasses.detailed_class_unification_error TypeInferClasses.index_instance_property TypeInferClasses.table_class_unification_reports_sane_errors_for_missing_properties +TypeInferClasses.table_indexers_are_invariant +TypeInferFunctions.apply_of_lambda_with_inferred_and_explicit_types TypeInferFunctions.cannot_hoist_interior_defns_into_signature TypeInferFunctions.dont_assert_when_the_tarjan_limit_is_exceeded_during_generalization +TypeInferFunctions.dont_give_other_overloads_message_if_only_one_argument_matching_overload_exists TypeInferFunctions.dont_infer_parameter_types_for_functions_from_their_call_site TypeInferFunctions.function_cast_error_uses_correct_language TypeInferFunctions.function_decl_non_self_sealed_overwrite_2 @@ -253,17 +286,24 @@ TypeInferFunctions.function_decl_non_self_unsealed_overwrite TypeInferFunctions.function_does_not_return_enough_values TypeInferFunctions.function_exprs_are_generalized_at_signature_scope_not_enclosing TypeInferFunctions.function_statement_sealed_table_assignment_through_indexer +TypeInferFunctions.generic_packs_are_not_variadic TypeInferFunctions.higher_order_function_2 +TypeInferFunctions.higher_order_function_3 TypeInferFunctions.higher_order_function_4 TypeInferFunctions.improved_function_arg_mismatch_errors TypeInferFunctions.infer_anonymous_function_arguments -TypeInferFunctions.infer_anonymous_function_arguments_outside_call TypeInferFunctions.infer_generic_function_function_argument TypeInferFunctions.infer_generic_function_function_argument_overloaded TypeInferFunctions.infer_generic_lib_function_function_argument +TypeInferFunctions.infer_higher_order_function +TypeInferFunctions.infer_return_type_from_selected_overload TypeInferFunctions.infer_that_function_does_not_return_a_table +TypeInferFunctions.it_is_ok_to_oversaturate_a_higher_order_function_argument TypeInferFunctions.luau_subtyping_is_np_hard TypeInferFunctions.no_lossy_function_type +TypeInferFunctions.param_1_and_2_both_takes_the_same_generic_but_their_arguments_are_incompatible +TypeInferFunctions.param_1_and_2_both_takes_the_same_generic_but_their_arguments_are_incompatible_2 +TypeInferFunctions.record_matching_overload TypeInferFunctions.report_exiting_without_return_strict TypeInferFunctions.return_type_by_overload TypeInferFunctions.too_few_arguments_variadic @@ -274,34 +314,51 @@ TypeInferFunctions.too_many_return_values_in_parentheses TypeInferFunctions.too_many_return_values_no_function TypeInferLoops.cli_68448_iterators_need_not_accept_nil TypeInferLoops.dcr_iteration_on_never_gives_never +TypeInferLoops.dcr_xpath_candidates TypeInferLoops.for_in_loop TypeInferLoops.for_in_loop_error_on_factory_not_returning_the_right_amount_of_values +TypeInferLoops.for_in_loop_error_on_iterator_requiring_args_but_none_given TypeInferLoops.for_in_loop_on_error +TypeInferLoops.for_in_loop_on_non_function TypeInferLoops.for_in_loop_with_custom_iterator TypeInferLoops.for_in_loop_with_incompatible_args_to_iterator TypeInferLoops.for_in_loop_with_next +TypeInferLoops.for_in_with_just_one_iterator_is_ok TypeInferLoops.ipairs_produces_integral_indices TypeInferLoops.iteration_regression_issue_69967_alt TypeInferLoops.loop_iter_basic TypeInferLoops.loop_iter_metamethod_nil +TypeInferLoops.loop_iter_metamethod_ok TypeInferLoops.loop_iter_metamethod_ok_with_inference TypeInferLoops.loop_iter_trailing_nil +TypeInferLoops.loop_typecheck_crash_on_empty_optional +TypeInferLoops.properly_infer_iteratee_is_a_free_table TypeInferLoops.unreachable_code_after_infinite_loop TypeInferLoops.varlist_declared_by_for_in_loop_should_be_free +TypeInferModules.bound_free_table_export_is_ok TypeInferModules.do_not_modify_imported_types_5 TypeInferModules.module_type_conflict TypeInferModules.module_type_conflict_instantiated +TypeInferModules.require_failed_module TypeInferOOP.cycle_between_object_constructor_and_alias TypeInferOOP.dont_suggest_using_colon_rather_than_dot_if_it_wont_help_2 TypeInferOOP.dont_suggest_using_colon_rather_than_dot_if_not_defined_with_colon TypeInferOOP.inferring_hundreds_of_self_calls_should_not_suffocate_memory TypeInferOOP.methods_are_topologically_sorted +TypeInferOOP.object_constructor_can_refer_to_method_of_self +TypeInferOOP.promise_type_error_too_complex +TypeInferOOP.react_style_oo +TypeInferOOP.table_oop +TypeInferOperators.add_type_family_works TypeInferOperators.and_binexps_dont_unify TypeInferOperators.cli_38355_recursive_union +TypeInferOperators.compound_assign_result_must_be_compatible_with_var +TypeInferOperators.concat_op_on_free_lhs_and_string_rhs TypeInferOperators.concat_op_on_string_lhs_and_free_rhs TypeInferOperators.disallow_string_and_types_without_metatables_from_arithmetic_binary_ops TypeInferOperators.luau_polyfill_is_array TypeInferOperators.operator_eq_completely_incompatible +TypeInferOperators.strict_binary_op_where_lhs_unknown TypeInferOperators.typecheck_overloaded_multiply_that_is_an_intersection TypeInferOperators.typecheck_overloaded_multiply_that_is_an_intersection_on_rhs TypeInferOperators.typecheck_unary_len_error @@ -313,22 +370,18 @@ TypeInferPrimitives.CheckMethodsOfNumber TypeInferPrimitives.string_index TypeInferUnknownNever.length_of_never TypeInferUnknownNever.math_operators_and_never -TypePackTests.detect_cyclic_typepacks2 TypePackTests.higher_order_function TypePackTests.pack_tail_unification_check TypePackTests.type_alias_backwards_compatible TypePackTests.type_alias_default_type_errors +TypePackTests.type_packs_with_tails_in_vararg_adjustment TypeSingletons.function_args_infer_singletons TypeSingletons.function_call_with_singletons TypeSingletons.function_call_with_singletons_mismatch -TypeSingletons.no_widening_from_callsites -TypeSingletons.overloaded_function_call_with_singletons_mismatch TypeSingletons.return_type_of_f_is_not_widened TypeSingletons.table_properties_type_error_escapes TypeSingletons.widen_the_supertype_if_it_is_free_and_subtype_has_singleton TypeSingletons.widening_happens_almost_everywhere -UnionTypes.dont_allow_cyclic_unions_to_be_inferred -UnionTypes.generic_function_with_optional_arg UnionTypes.index_on_a_union_type_with_missing_property UnionTypes.less_greedy_unification_with_union_types UnionTypes.table_union_write_indirect