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This commit is contained in:
Lily Brown 2023-09-01 09:38:53 -07:00
parent a811050505
commit 397dbb1188
91 changed files with 1619 additions and 382 deletions
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1
Analysis/include/Luau/Metamethods.h
View file

@ -19,6 +19,7 @@ static const std::unordered_map<AstExprBinary::Op, const char*> kBinaryOpMetamet
{AstExprBinary::Op::Sub, "__sub"},
{AstExprBinary::Op::Mul, "__mul"},
{AstExprBinary::Op::Div, "__div"},
{AstExprBinary::Op::FloorDiv, "__idiv"},
{AstExprBinary::Op::Pow, "__pow"},
{AstExprBinary::Op::Mod, "__mod"},
{AstExprBinary::Op::Concat, "__concat"},

16
Analysis/include/Luau/Subtyping.h
View file

@ -2,6 +2,7 @@
#pragma once
#include "Luau/Type.h"
#include "Luau/TypePack.h"
#include "Luau/UnifierSharedState.h"
#include <vector>
@ -14,8 +15,10 @@ template<typename A, typename B>
struct TryPair;
struct InternalErrorReporter;
class TypeIds;
class Normalizer;
struct NormalizedType;
struct NormalizedClassType;
struct SubtypingResult
{
@ -30,6 +33,8 @@ struct SubtypingResult
void andAlso(const SubtypingResult& other);
void orElse(const SubtypingResult& other);
// Only negates the `isSubtype`.
static SubtypingResult negate(const SubtypingResult& result);
static SubtypingResult all(const std::vector<SubtypingResult>& results);
static SubtypingResult any(const std::vector<SubtypingResult>& results);
};
@ -88,8 +93,19 @@ private:
SubtypingResult isSubtype_(const SingletonType* subSingleton, const PrimitiveType* superPrim);
SubtypingResult isSubtype_(const SingletonType* subSingleton, const SingletonType* superSingleton);
SubtypingResult isSubtype_(const TableType* subTable, const TableType* superTable);
SubtypingResult isSubtype_(const MetatableType* subMt, const MetatableType* superMt);
SubtypingResult isSubtype_(const MetatableType* subMt, const TableType* superTable);
SubtypingResult isSubtype_(const ClassType* subClass, const ClassType* superClass);
SubtypingResult isSubtype_(const ClassType* subClass, const TableType* superTable); // Actually a class <: shape.
SubtypingResult isSubtype_(const FunctionType* subFunction, const FunctionType* superFunction);
SubtypingResult isSubtype_(const PrimitiveType* subPrim, const TableType* superTable);
SubtypingResult isSubtype_(const SingletonType* subSingleton, const TableType* superTable);
SubtypingResult isSubtype_(const NormalizedType* subNorm, const NormalizedType* superNorm);
SubtypingResult isSubtype_(const NormalizedClassType& subClass, const NormalizedClassType& superClass, const TypeIds& superTables);
SubtypingResult isSubtype_(const TypeIds& subTypes, const TypeIds& superTypes);
SubtypingResult isSubtype_(const VariadicTypePack* subVariadic, const VariadicTypePack* superVariadic);
bool bindGeneric(TypeId subTp, TypeId superTp);
bool bindGeneric(TypePackId subTp, TypePackId superTp);

7
Analysis/src/AstJsonEncoder.cpp
View file

@ -8,6 +8,8 @@
#include <math.h>
LUAU_FASTFLAG(LuauFloorDivision)
namespace Luau
{
@ -514,6 +516,9 @@ struct AstJsonEncoder : public AstVisitor
return writeString("Mul");
case AstExprBinary::Div:
return writeString("Div");
case AstExprBinary::FloorDiv:
LUAU_ASSERT(FFlag::LuauFloorDivision);
return writeString("FloorDiv");
case AstExprBinary::Mod:
return writeString("Mod");
case AstExprBinary::Pow:
@ -536,6 +541,8 @@ struct AstJsonEncoder : public AstVisitor
return writeString("And");
case AstExprBinary::Or:
return writeString("Or");
default:
LUAU_ASSERT(!"Unknown Op");
}
}

14
Analysis/src/Autocomplete.cpp
View file

@ -15,6 +15,7 @@
LUAU_FASTFLAG(DebugLuauReadWriteProperties)
LUAU_FASTFLAGVARIABLE(LuauAnonymousAutofilled1, false);
LUAU_FASTFLAGVARIABLE(LuauAutocompleteLastTypecheck, false)
LUAU_FASTFLAGVARIABLE(LuauAutocompleteDoEnd, false)
LUAU_FASTFLAGVARIABLE(LuauAutocompleteStringLiteralBounds, false);
static const std::unordered_set<std::string> kStatementStartingKeywords = {
@ -1089,14 +1090,19 @@ static AutocompleteEntryMap autocompleteStatement(
{
if (AstStatForIn* statForIn = (*it)->as<AstStatForIn>(); statForIn && !statForIn->hasEnd)
result.emplace("end", AutocompleteEntry{AutocompleteEntryKind::Keyword});
if (AstStatFor* statFor = (*it)->as<AstStatFor>(); statFor && !statFor->hasEnd)
else if (AstStatFor* statFor = (*it)->as<AstStatFor>(); statFor && !statFor->hasEnd)
result.emplace("end", AutocompleteEntry{AutocompleteEntryKind::Keyword});
if (AstStatIf* statIf = (*it)->as<AstStatIf>(); statIf && !statIf->hasEnd)
else if (AstStatIf* statIf = (*it)->as<AstStatIf>(); statIf && !statIf->hasEnd)
result.emplace("end", AutocompleteEntry{AutocompleteEntryKind::Keyword});
if (AstStatWhile* statWhile = (*it)->as<AstStatWhile>(); statWhile && !statWhile->hasEnd)
else if (AstStatWhile* statWhile = (*it)->as<AstStatWhile>(); statWhile && !statWhile->hasEnd)
result.emplace("end", AutocompleteEntry{AutocompleteEntryKind::Keyword});
if (AstExprFunction* exprFunction = (*it)->as<AstExprFunction>(); exprFunction && !exprFunction->hasEnd)
else if (AstExprFunction* exprFunction = (*it)->as<AstExprFunction>(); exprFunction && !exprFunction->hasEnd)
result.emplace("end", AutocompleteEntry{AutocompleteEntryKind::Keyword});
if (FFlag::LuauAutocompleteDoEnd)
{
if (AstStatBlock* exprBlock = (*it)->as<AstStatBlock>(); exprBlock && !exprBlock->hasEnd)
result.emplace("end", AutocompleteEntry{AutocompleteEntryKind::Keyword});
}
}
if (ancestry.size() >= 2)

4
Analysis/src/ConstraintGraphBuilder.cpp
View file

@ -24,6 +24,7 @@ LUAU_FASTINT(LuauCheckRecursionLimit);
LUAU_FASTFLAG(DebugLuauLogSolverToJson);
LUAU_FASTFLAG(DebugLuauMagicTypes);
LUAU_FASTFLAG(LuauParseDeclareClassIndexer);
LUAU_FASTFLAG(LuauFloorDivision);
namespace Luau
{
@ -1170,7 +1171,8 @@ static bool isMetamethod(const Name& name)
{
return name == "__index" || name == "__newindex" || name == "__call" || name == "__concat" || name == "__unm" || name == "__add" ||
name == "__sub" || name == "__mul" || name == "__div" || name == "__mod" || name == "__pow" || name == "__tostring" ||
name == "__metatable" || name == "__eq" || name == "__lt" || name == "__le" || name == "__mode" || name == "__iter" || name == "__len";
name == "__metatable" || name == "__eq" || name == "__lt" || name == "__le" || name == "__mode" || name == "__iter" || name == "__len" ||
(FFlag::LuauFloorDivision && name == "__idiv");
}
ControlFlow ConstraintGraphBuilder::visit(const ScopePtr& scope, AstStatDeclareClass* declaredClass)

6
Analysis/src/ConstraintSolver.cpp
View file

@ -22,6 +22,7 @@
#include "Luau/VisitType.h"
LUAU_FASTFLAGVARIABLE(DebugLuauLogSolver, false);
LUAU_FASTFLAG(LuauFloorDivision);
namespace Luau
{
@ -719,6 +720,8 @@ bool ConstraintSolver::tryDispatch(const BinaryConstraint& c, NotNull<const Cons
// Metatables go first, even if there is primitive behavior.
if (auto it = kBinaryOpMetamethods.find(c.op); it != kBinaryOpMetamethods.end())
{
LUAU_ASSERT(FFlag::LuauFloorDivision || c.op != AstExprBinary::Op::FloorDiv);
// Metatables are not the same. The metamethod will not be invoked.
if ((c.op == AstExprBinary::Op::CompareEq || c.op == AstExprBinary::Op::CompareNe) &&
getMetatable(leftType, builtinTypes) != getMetatable(rightType, builtinTypes))
@ -806,9 +809,12 @@ bool ConstraintSolver::tryDispatch(const BinaryConstraint& c, NotNull<const Cons
case AstExprBinary::Op::Sub:
case AstExprBinary::Op::Mul:
case AstExprBinary::Op::Div:
case AstExprBinary::Op::FloorDiv:
case AstExprBinary::Op::Pow:
case AstExprBinary::Op::Mod:
{
LUAU_ASSERT(FFlag::LuauFloorDivision || c.op != AstExprBinary::Op::FloorDiv);
const NormalizedType* normLeftTy = normalizer->normalize(leftType);
if (hasTypeInIntersection<FreeType>(leftType) && force)
asMutable(leftType)->ty.emplace<BoundType>(anyPresent ? builtinTypes->anyType : builtinTypes->numberType);

22
Analysis/src/Error.cpp
View file

@ -12,7 +12,6 @@
#include <stdexcept>
#include <type_traits>
LUAU_FASTFLAGVARIABLE(LuauIndentTypeMismatch, false)
LUAU_FASTINTVARIABLE(LuauIndentTypeMismatchMaxTypeLength, 10)
static std::string wrongNumberOfArgsString(
@ -94,31 +93,18 @@ struct ErrorConverter
{
std::string givenModuleName = fileResolver->getHumanReadableModuleName(*givenDefinitionModule);
std::string wantedModuleName = fileResolver->getHumanReadableModuleName(*wantedDefinitionModule);
if (FFlag::LuauIndentTypeMismatch)
result = constructErrorMessage(givenTypeName, wantedTypeName, givenModuleName, wantedModuleName);
else
result = "Type '" + givenTypeName + "' from '" + givenModuleName + "' could not be converted into '" + wantedTypeName +
"' from '" + wantedModuleName + "'";
result = constructErrorMessage(givenTypeName, wantedTypeName, givenModuleName, wantedModuleName);
}
else
{
if (FFlag::LuauIndentTypeMismatch)
result = constructErrorMessage(givenTypeName, wantedTypeName, *givenDefinitionModule, *wantedDefinitionModule);
else
result = "Type '" + givenTypeName + "' from '" + *givenDefinitionModule + "' could not be converted into '" +
wantedTypeName + "' from '" + *wantedDefinitionModule + "'";
result = constructErrorMessage(givenTypeName, wantedTypeName, *givenDefinitionModule, *wantedDefinitionModule);
}
}
}
}
if (result.empty())
{
if (FFlag::LuauIndentTypeMismatch)
result = constructErrorMessage(givenTypeName, wantedTypeName, std::nullopt, std::nullopt);
else
result = "Type '" + givenTypeName + "' could not be converted into '" + wantedTypeName + "'";
}
result = constructErrorMessage(givenTypeName, wantedTypeName, std::nullopt, std::nullopt);
if (tm.error)
@ -126,7 +112,7 @@ struct ErrorConverter
result += "\ncaused by:\n ";
if (!tm.reason.empty())
result += tm.reason + (FFlag::LuauIndentTypeMismatch ? " \n" : " ");
result += tm.reason + " \n";
result += Luau::toString(*tm.error, TypeErrorToStringOptions{fileResolver});
}

181
Analysis/src/Subtyping.cpp
View file

@ -58,6 +58,15 @@ void SubtypingResult::orElse(const SubtypingResult& other)
normalizationTooComplex |= other.normalizationTooComplex;
}
SubtypingResult SubtypingResult::negate(const SubtypingResult& result)
{
return SubtypingResult{
!result.isSubtype,
result.isErrorSuppressing,
result.normalizationTooComplex,
};
}
SubtypingResult SubtypingResult::all(const std::vector<SubtypingResult>& results)
{
SubtypingResult acc{true, false};
@ -137,10 +146,10 @@ SubtypingResult Subtyping::isSubtype_(TypeId subTy, TypeId superTy)
SeenSetPopper ssp{&seenTypes, typePair};
if (auto superUnion = get<UnionType>(superTy))
return isSubtype_(subTy, superUnion);
else if (auto subUnion = get<UnionType>(subTy))
if (auto subUnion = get<UnionType>(subTy))
return isSubtype_(subUnion, superTy);
else if (auto superUnion = get<UnionType>(superTy))
return isSubtype_(subTy, superUnion);
else if (auto superIntersection = get<IntersectionType>(superTy))
return isSubtype_(subTy, superIntersection);
else if (auto subIntersection = get<IntersectionType>(subTy))
@ -196,6 +205,18 @@ SubtypingResult Subtyping::isSubtype_(TypeId subTy, TypeId superTy)
return isSubtype_(p);
else if (auto p = get2<TableType, TableType>(subTy, superTy))
return isSubtype_(p);
else if (auto p = get2<MetatableType, MetatableType>(subTy, superTy))
return isSubtype_(p);
else if (auto p = get2<MetatableType, TableType>(subTy, superTy))
return isSubtype_(p);
else if (auto p = get2<ClassType, ClassType>(subTy, superTy))
return isSubtype_(p);
else if (auto p = get2<ClassType, TableType>(subTy, superTy))
return isSubtype_(p);
else if (auto p = get2<PrimitiveType, TableType>(subTy, superTy))
return isSubtype_(p);
else if (auto p = get2<SingletonType, TableType>(subTy, superTy))
return isSubtype_(p);
return {false};
}
@ -323,7 +344,7 @@ SubtypingResult Subtyping::isSubtype_(TypePackId subTp, TypePackId superTp)
{
if (auto p = get2<VariadicTypePack, VariadicTypePack>(*subTail, *superTail))
{
results.push_back(isSubtype_(p.first->ty, p.second->ty));
results.push_back(isSubtype_(p));
}
else if (auto p = get2<GenericTypePack, GenericTypePack>(*subTail, *superTail))
{
@ -472,7 +493,6 @@ SubtypingResult Subtyping::isSubtype_(TypeId subTy, const IntersectionType* supe
SubtypingResult Subtyping::isSubtype_(const IntersectionType* subIntersection, TypeId superTy)
{
// TODO: Semantic subtyping here.
// As per TAPL: A & B <: T iff A <: T || B <: T
std::vector<SubtypingResult> subtypings;
for (TypeId ty : subIntersection)
@ -520,6 +540,59 @@ SubtypingResult Subtyping::isSubtype_(const TableType* subTable, const TableType
return result;
}
SubtypingResult Subtyping::isSubtype_(const MetatableType* subMt, const MetatableType* superMt)
{
return SubtypingResult::all({
isSubtype_(subMt->table, superMt->table),
isSubtype_(subMt->metatable, superMt->metatable),
});
}
SubtypingResult Subtyping::isSubtype_(const MetatableType* subMt, const TableType* superTable)
{
if (auto subTable = get<TableType>(subMt->table)) {
// Metatables cannot erase properties from the table they're attached to, so
// the subtyping rule for this is just if the table component is a subtype
// of the supertype table.
//
// There's a flaw here in that if the __index metamethod contributes a new
// field that would satisfy the subtyping relationship, we'll erronously say
// that the metatable isn't a subtype of the table, even though they have
// compatible properties/shapes. We'll revisit this later when we have a
// better understanding of how important this is.
return isSubtype_(subTable, superTable);
}
else
{
// TODO: This may be a case we actually hit?
return {false};
}
}
SubtypingResult Subtyping::isSubtype_(const ClassType* subClass, const ClassType* superClass)
{
return {isSubclass(subClass, superClass)};
}
SubtypingResult Subtyping::isSubtype_(const ClassType* subClass, const TableType* superTable)
{
SubtypingResult result{true};
for (const auto& [name, prop]: superTable->props)
{
if (auto classProp = lookupClassProp(subClass, name))
{
// Table properties are invariant
result.andAlso(isSubtype_(classProp->type(), prop.type()));
result.andAlso(isSubtype_(prop.type(), classProp->type()));
}
else
return SubtypingResult{false};
}
return result;
}
SubtypingResult Subtyping::isSubtype_(const FunctionType* subFunction, const FunctionType* superFunction)
{
SubtypingResult result;
@ -533,6 +606,47 @@ SubtypingResult Subtyping::isSubtype_(const FunctionType* subFunction, const Fun
return result;
}
SubtypingResult Subtyping::isSubtype_(const PrimitiveType* subPrim, const TableType* superTable)
{
SubtypingResult result{false};
if (subPrim->type == PrimitiveType::String)
{
if (auto metatable = getMetatable(builtinTypes->stringType, builtinTypes))
{
if (auto mttv = get<TableType>(follow(metatable)))
{
if (auto it = mttv->props.find("__index"); it != mttv->props.end())
{
if (auto stringTable = get<TableType>(it->second.type()))
result.orElse(isSubtype_(stringTable, superTable));
}
}
}
}
return result;
}
SubtypingResult Subtyping::isSubtype_(const SingletonType* subSingleton, const TableType* superTable)
{
SubtypingResult result{false};
if (auto stringleton = get<StringSingleton>(subSingleton))
{
if (auto metatable = getMetatable(builtinTypes->stringType, builtinTypes))
{
if (auto mttv = get<TableType>(follow(metatable)))
{
if (auto it = mttv->props.find("__index"); it != mttv->props.end())
{
if (auto stringTable = get<TableType>(it->second.type()))
result.orElse(isSubtype_(stringTable, superTable));
}
}
}
}
return result;
}
SubtypingResult Subtyping::isSubtype_(const NormalizedType* subNorm, const NormalizedType* superNorm)
{
if (!subNorm || !superNorm)
@ -540,15 +654,14 @@ SubtypingResult Subtyping::isSubtype_(const NormalizedType* subNorm, const Norma
SubtypingResult result = isSubtype_(subNorm->tops, superNorm->tops);
result.andAlso(isSubtype_(subNorm->booleans, superNorm->booleans));
// isSubtype_(subNorm->classes, superNorm->classes);
// isSubtype_(subNorm->classes, superNorm->tables);
result.andAlso(isSubtype_(subNorm->classes, superNorm->classes, superNorm->tables));
result.andAlso(isSubtype_(subNorm->errors, superNorm->errors));
result.andAlso(isSubtype_(subNorm->nils, superNorm->nils));
result.andAlso(isSubtype_(subNorm->numbers, superNorm->numbers));
result.isSubtype &= Luau::isSubtype(subNorm->strings, superNorm->strings);
// isSubtype_(subNorm->strings, superNorm->tables);
result.andAlso(isSubtype_(subNorm->threads, superNorm->threads));
// isSubtype_(subNorm->tables, superNorm->tables);
result.andAlso(isSubtype_(subNorm->tables, superNorm->tables));
// isSubtype_(subNorm->tables, superNorm->strings);
// isSubtype_(subNorm->tables, superNorm->classes);
// isSubtype_(subNorm->functions, superNorm->functions);
@ -557,6 +670,58 @@ SubtypingResult Subtyping::isSubtype_(const NormalizedType* subNorm, const Norma
return result;
}
SubtypingResult Subtyping::isSubtype_(const NormalizedClassType& subClass, const NormalizedClassType& superClass, const TypeIds& superTables)
{
for (const auto& [subClassTy, _] : subClass.classes)
{
SubtypingResult result;
for (const auto& [superClassTy, superNegations] : superClass.classes)
{
result.orElse(isSubtype_(subClassTy, superClassTy));
if (!result.isSubtype)
continue;
for (TypeId negation : superNegations)
{
result.andAlso(SubtypingResult::negate(isSubtype_(subClassTy, negation)));
if (result.isSubtype)
break;
}
}
if (result.isSubtype)
continue;
for (TypeId superTableTy : superTables)
result.orElse(isSubtype_(subClassTy, superTableTy));
if (!result.isSubtype)
return result;
}
return {true};
}
SubtypingResult Subtyping::isSubtype_(const TypeIds& subTypes, const TypeIds& superTypes)
{
std::vector<SubtypingResult> results;
for (TypeId subTy : subTypes)
{
results.emplace_back();
for (TypeId superTy : superTypes)
results.back().orElse(isSubtype_(subTy, superTy));
}
return SubtypingResult::all(results);
}
SubtypingResult Subtyping::isSubtype_(const VariadicTypePack* subVariadic, const VariadicTypePack* superVariadic)
{
return isSubtype_(subVariadic->ty, superVariadic->ty);
}
bool Subtyping::bindGeneric(TypeId subTy, TypeId superTy)
{
if (variance == Variance::Covariant)

13
Analysis/src/Transpiler.cpp
View file

@ -10,6 +10,8 @@
#include <limits>
#include <math.h>
LUAU_FASTFLAG(LuauFloorDivision)
namespace
{
bool isIdentifierStartChar(char c)
@ -467,10 +469,13 @@ struct Printer
case AstExprBinary::Sub:
case AstExprBinary::Mul:
case AstExprBinary::Div:
case AstExprBinary::FloorDiv:
case AstExprBinary::Mod:
case AstExprBinary::Pow:
case AstExprBinary::CompareLt:
case AstExprBinary::CompareGt:
LUAU_ASSERT(FFlag::LuauFloorDivision || a->op != AstExprBinary::FloorDiv);
writer.maybeSpace(a->right->location.begin, 2);
writer.symbol(toString(a->op));
break;
@ -487,6 +492,8 @@ struct Printer
writer.maybeSpace(a->right->location.begin, 4);
writer.keyword(toString(a->op));
break;
default:
LUAU_ASSERT(!"Unknown Op");
}
visualize(*a->right);
@ -753,6 +760,12 @@ struct Printer
writer.maybeSpace(a->value->location.begin, 2);
writer.symbol("/=");
break;
case AstExprBinary::FloorDiv:
LUAU_ASSERT(FFlag::LuauFloorDivision);
writer.maybeSpace(a->value->location.begin, 2);
writer.symbol("//=");
break;
case AstExprBinary::Mod:
writer.maybeSpace(a->value->location.begin, 2);
writer.symbol("%=");

6
Analysis/src/TypeChecker2.cpp
View file

@ -23,6 +23,7 @@
#include <algorithm>
LUAU_FASTFLAG(DebugLuauMagicTypes)
LUAU_FASTFLAG(LuauFloorDivision);
namespace Luau
{
@ -1817,6 +1818,8 @@ struct TypeChecker2
bool typesHaveIntersection = normalizer.isIntersectionInhabited(leftType, rightType);
if (auto it = kBinaryOpMetamethods.find(expr->op); it != kBinaryOpMetamethods.end())
{
LUAU_ASSERT(FFlag::LuauFloorDivision || expr->op != AstExprBinary::Op::FloorDiv);
std::optional<TypeId> leftMt = getMetatable(leftType, builtinTypes);
std::optional<TypeId> rightMt = getMetatable(rightType, builtinTypes);
bool matches = leftMt == rightMt;
@ -2002,8 +2005,11 @@ struct TypeChecker2
case AstExprBinary::Op::Sub:
case AstExprBinary::Op::Mul:
case AstExprBinary::Op::Div:
case AstExprBinary::Op::FloorDiv:
case AstExprBinary::Op::Pow:
case AstExprBinary::Op::Mod:
LUAU_ASSERT(FFlag::LuauFloorDivision || expr->op != AstExprBinary::Op::FloorDiv);
reportErrors(tryUnify(scope, expr->left->location, leftType, builtinTypes->numberType));
reportErrors(tryUnify(scope, expr->right->location, rightType, builtinTypes->numberType));

10
Analysis/src/TypeInfer.cpp
View file

@ -40,6 +40,7 @@ LUAU_FASTFLAG(LuauOccursIsntAlwaysFailure)
LUAU_FASTFLAGVARIABLE(LuauTinyControlFlowAnalysis, false)
LUAU_FASTFLAGVARIABLE(LuauAlwaysCommitInferencesOfFunctionCalls, false)
LUAU_FASTFLAG(LuauParseDeclareClassIndexer)
LUAU_FASTFLAG(LuauFloorDivision);
namespace Luau
{
@ -200,7 +201,8 @@ static bool isMetamethod(const Name& name)
{
return name == "__index" || name == "__newindex" || name == "__call" || name == "__concat" || name == "__unm" || name == "__add" ||
name == "__sub" || name == "__mul" || name == "__div" || name == "__mod" || name == "__pow" || name == "__tostring" ||
name == "__metatable" || name == "__eq" || name == "__lt" || name == "__le" || name == "__mode" || name == "__iter" || name == "__len";
name == "__metatable" || name == "__eq" || name == "__lt" || name == "__le" || name == "__mode" || name == "__iter" || name == "__len" ||
(FFlag::LuauFloorDivision && name == "__idiv");
}
size_t HashBoolNamePair::operator()(const std::pair<bool, Name>& pair) const
@ -2571,6 +2573,9 @@ std::string opToMetaTableEntry(const AstExprBinary::Op& op)
return "__mul";
case AstExprBinary::Div:
return "__div";
case AstExprBinary::FloorDiv:
LUAU_ASSERT(FFlag::LuauFloorDivision);
return "__idiv";
case AstExprBinary::Mod:
return "__mod";
case AstExprBinary::Pow:
@ -3064,8 +3069,11 @@ TypeId TypeChecker::checkBinaryOperation(
case AstExprBinary::Sub:
case AstExprBinary::Mul:
case AstExprBinary::Div:
case AstExprBinary::FloorDiv:
case AstExprBinary::Mod:
case AstExprBinary::Pow:
LUAU_ASSERT(FFlag::LuauFloorDivision || expr.op != AstExprBinary::FloorDiv);
reportErrors(tryUnify(lhsType, numberType, scope, expr.left->location));
reportErrors(tryUnify(rhsType, numberType, scope, expr.right->location));
return numberType;

4
Analysis/src/Unifier.cpp
View file

@ -605,6 +605,10 @@ void Unifier::tryUnify_(TypeId subTy, TypeId superTy, bool isFunctionCall, bool
{
// TODO: there are probably cheaper ways to check if any <: T.
const NormalizedType* superNorm = normalizer->normalize(superTy);
if (!superNorm)
return reportError(location, UnificationTooComplex{});
if (!log.get<AnyType>(superNorm->tops))
failure = true;
}

8
Ast/include/Luau/Ast.h
View file

@ -457,6 +457,7 @@ public:
Sub,
Mul,
Div,
FloorDiv,
Mod,
Pow,
Concat,
@ -467,7 +468,9 @@ public:
CompareGt,
CompareGe,
And,
Or
Or,
Op__Count
};
AstExprBinary(const Location& location, Op op, AstExpr* left, AstExpr* right);
@ -531,11 +534,12 @@ class AstStatBlock : public AstStat
public:
LUAU_RTTI(AstStatBlock)
AstStatBlock(const Location& location, const AstArray<AstStat*>& body);
AstStatBlock(const Location& location, const AstArray<AstStat*>& body, bool hasEnd=true);
void visit(AstVisitor* visitor) override;
AstArray<AstStat*> body;
bool hasEnd = false;
};
class AstStatIf : public AstStat

2
Ast/include/Luau/Lexer.h
View file

@ -62,6 +62,7 @@ struct Lexeme
Dot3,
SkinnyArrow,
DoubleColon,
FloorDiv,
InterpStringBegin,
InterpStringMid,
@ -73,6 +74,7 @@ struct Lexeme
SubAssign,
MulAssign,
DivAssign,
FloorDivAssign,
ModAssign,
PowAssign,
ConcatAssign,

8
Ast/src/Ast.cpp
View file

@ -3,6 +3,8 @@
#include "Luau/Common.h"
LUAU_FASTFLAG(LuauFloorDivision)
namespace Luau
{
@ -279,6 +281,9 @@ std::string toString(AstExprBinary::Op op)
return "*";
case AstExprBinary::Div:
return "/";
case AstExprBinary::FloorDiv:
LUAU_ASSERT(FFlag::LuauFloorDivision);
return "//";
case AstExprBinary::Mod:
return "%";
case AstExprBinary::Pow:
@ -375,9 +380,10 @@ void AstExprError::visit(AstVisitor* visitor)
}
}
AstStatBlock::AstStatBlock(const Location& location, const AstArray<AstStat*>& body)
AstStatBlock::AstStatBlock(const Location& location, const AstArray<AstStat*>& body, bool hasEnd)
: AstStat(ClassIndex(), location)
, body(body)
, hasEnd(hasEnd)
{
}

58
Ast/src/Lexer.cpp
View file

@ -6,7 +6,9 @@
#include <limits.h>
LUAU_FASTFLAGVARIABLE(LuauFloorDivision, false)
LUAU_FASTFLAGVARIABLE(LuauLexerConsumeFast, false)
LUAU_FASTFLAGVARIABLE(LuauLexerLookaheadRemembersBraceType, false)
namespace Luau
{
@ -138,6 +140,9 @@ std::string Lexeme::toString() const
case DoubleColon:
return "'::'";
case FloorDiv:
return FFlag::LuauFloorDivision ? "'//'" : "<unknown>";
case AddAssign:
return "'+='";
@ -150,6 +155,9 @@ std::string Lexeme::toString() const
case DivAssign:
return "'/='";
case FloorDivAssign:
return FFlag::LuauFloorDivision ? "'//='" : "<unknown>";
case ModAssign:
return "'%='";
@ -402,6 +410,8 @@ Lexeme Lexer::lookahead()
unsigned int currentLineOffset = lineOffset;
Lexeme currentLexeme = lexeme;
Location currentPrevLocation = prevLocation;
size_t currentBraceStackSize = braceStack.size();
BraceType currentBraceType = braceStack.empty() ? BraceType::Normal : braceStack.back();
Lexeme result = next();
@ -410,6 +420,13 @@ Lexeme Lexer::lookahead()
lineOffset = currentLineOffset;
lexeme = currentLexeme;
prevLocation = currentPrevLocation;
if (FFlag::LuauLexerLookaheadRemembersBraceType)
{
if (braceStack.size() < currentBraceStackSize)
braceStack.push_back(currentBraceType);
else if (braceStack.size() > currentBraceStackSize)
braceStack.pop_back();
}
return result;
}
@ -901,15 +918,46 @@ Lexeme Lexer::readNext()
return Lexeme(Location(start, 1), '+');
case '/':
consume();
if (peekch() == '=')
{
if (FFlag::LuauFloorDivision)
{
consume();
return Lexeme(Location(start, 2), Lexeme::DivAssign);
char ch = peekch();
if (ch == '=')
{
consume();
return Lexeme(Location(start, 2), Lexeme::DivAssign);
}
else if (ch == '/')
{
consume();
if (peekch() == '=')
{
consume();
return Lexeme(Location(start, 3), Lexeme::FloorDivAssign);
}
else
return Lexeme(Location(start, 2), Lexeme::FloorDiv);
}
else
return Lexeme(Location(start, 1), '/');
}
else
return Lexeme(Location(start, 1), '/');
{
consume();
if (peekch() == '=')
{
consume();
return Lexeme(Location(start, 2), Lexeme::DivAssign);
}
else
return Lexeme(Location(start, 1), '/');
}
}
case '*':
consume();

28
Ast/src/Parser.cpp
View file

@ -14,6 +14,7 @@
LUAU_FASTINTVARIABLE(LuauRecursionLimit, 1000)
LUAU_FASTINTVARIABLE(LuauParseErrorLimit, 100)
LUAU_FASTFLAGVARIABLE(LuauParseDeclareClassIndexer, false)
LUAU_FASTFLAG(LuauFloorDivision)
namespace Luau
{
@ -460,11 +461,11 @@ AstStat* Parser::parseDo()
Lexeme matchDo = lexer.current();
nextLexeme(); // do
AstStat* body = parseBlock();
AstStatBlock* body = parseBlock();
body->location.begin = start.begin;
expectMatchEndAndConsume(Lexeme::ReservedEnd, matchDo);
body->hasEnd = expectMatchEndAndConsume(Lexeme::ReservedEnd, matchDo);
return body;
}
@ -1766,6 +1767,12 @@ std::optional<AstExprBinary::Op> Parser::parseBinaryOp(const Lexeme& l)
return AstExprBinary::Mul;
else if (l.type == '/')
return AstExprBinary::Div;
else if (l.type == Lexeme::FloorDiv)
{
LUAU_ASSERT(FFlag::LuauFloorDivision);
return AstExprBinary::FloorDiv;
}
else if (l.type == '%')
return AstExprBinary::Mod;
else if (l.type == '^')
@ -1802,6 +1809,12 @@ std::optional<AstExprBinary::Op> Parser::parseCompoundOp(const Lexeme& l)
return AstExprBinary::Mul;
else if (l.type == Lexeme::DivAssign)
return AstExprBinary::Div;
else if (l.type == Lexeme::FloorDivAssign)
{
LUAU_ASSERT(FFlag::LuauFloorDivision);
return AstExprBinary::FloorDiv;
}
else if (l.type == Lexeme::ModAssign)
return AstExprBinary::Mod;
else if (l.type == Lexeme::PowAssign)
@ -1872,12 +1885,13 @@ std::optional<AstExprBinary::Op> Parser::checkBinaryConfusables(const BinaryOpPr
AstExpr* Parser::parseExpr(unsigned int limit)
{
static const BinaryOpPriority binaryPriority[] = {
{6, 6}, {6, 6}, {7, 7}, {7, 7}, {7, 7}, // `+' `-' `*' `/' `%'
{10, 9}, {5, 4}, // power and concat (right associative)
{3, 3}, {3, 3}, // equality and inequality
{3, 3}, {3, 3}, {3, 3}, {3, 3}, // order
{2, 2}, {1, 1} // logical (and/or)
{6, 6}, {6, 6}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, // `+' `-' `*' `/' `//' `%'
{10, 9}, {5, 4}, // power and concat (right associative)
{3, 3}, {3, 3}, // equality and inequality
{3, 3}, {3, 3}, {3, 3}, {3, 3}, // order
{2, 2}, {1, 1} // logical (and/or)
};
static_assert(sizeof(binaryPriority) / sizeof(binaryPriority[0]) == size_t(AstExprBinary::Op__Count), "binaryPriority needs an entry per op");
unsigned int recursionCounterOld = recursionCounter;

1
CodeGen/include/Luau/AssemblyBuilderA64.h
View file

@ -221,6 +221,7 @@ private:
void placeFMOV(const char* name, RegisterA64 dst, double src, uint32_t op);
void placeBM(const char* name, RegisterA64 dst, RegisterA64 src1, uint32_t src2, uint8_t op);
void placeBFM(const char* name, RegisterA64 dst, RegisterA64 src1, int src2, uint8_t op, int immr, int imms);
void placeER(const char* name, RegisterA64 dst, RegisterA64 src1, RegisterA64 src2, uint8_t op, int shift);
void place(uint32_t word);

30
CodeGen/include/Luau/IrData.h
View file

@ -67,6 +67,7 @@ enum class IrCmd : uint8_t
// Get pointer (LuaNode) to table node element at the active cached slot index
// A: pointer (Table)
// B: unsigned int (pcpos)
// C: Kn
GET_SLOT_NODE_ADDR,
// Get pointer (LuaNode) to table node element at the main position of the specified key hash
@ -132,6 +133,7 @@ enum class IrCmd : uint8_t
SUB_NUM,
MUL_NUM,
DIV_NUM,
IDIV_NUM,
MOD_NUM,
// Get the minimum/maximum of two numbers
@ -253,6 +255,11 @@ enum class IrCmd : uint8_t
// A: pointer (Table)
DUP_TABLE,
// Insert an integer key into a table
// A: pointer (Table)
// B: int (key)
TABLE_SETNUM,
// Try to convert a double number into a table index (int) or jump if it's not an integer
// A: double
// B: block
@ -411,6 +418,12 @@ enum class IrCmd : uint8_t
// When undef is specified instead of a block, execution is aborted on check failure
CHECK_NODE_NO_NEXT,
// Guard against table node with 'nil' value
// A: pointer (LuaNode)
// B: block/vmexit/undef
// When undef is specified instead of a block, execution is aborted on check failure
CHECK_NODE_VALUE,
// Special operations
// Check interrupt handler
@ -832,6 +845,8 @@ struct IrBlock
uint32_t finish = ~0u;
uint32_t sortkey = ~0u;
uint32_t chainkey = 0;
uint32_t expectedNextBlock = ~0u;
Label label;
};
@ -993,23 +1008,26 @@ struct IrFunction
valueRestoreOps[instIdx] = location;
}
IrOp findRestoreOp(uint32_t instIdx) const
IrOp findRestoreOp(uint32_t instIdx, bool limitToCurrentBlock) const
{
if (instIdx >= valueRestoreOps.size())
return {};
const IrBlock& block = blocks[validRestoreOpBlockIdx];
// Values can only reference restore operands in the current block
if (instIdx < block.start || instIdx > block.finish)
return {};
// When spilled, values can only reference restore operands in the current block
if (limitToCurrentBlock)
{
if (instIdx < block.start || instIdx > block.finish)
return {};
}
return valueRestoreOps[instIdx];
}
IrOp findRestoreOp(const IrInst& inst) const
IrOp findRestoreOp(const IrInst& inst, bool limitToCurrentBlock) const
{
return findRestoreOp(getInstIndex(inst));
return findRestoreOp(getInstIndex(inst), limitToCurrentBlock);
}
};

3
CodeGen/include/Luau/IrUtils.h
View file

@ -128,6 +128,7 @@ inline bool isNonTerminatingJump(IrCmd cmd)
case IrCmd::CHECK_ARRAY_SIZE:
case IrCmd::CHECK_SLOT_MATCH:
case IrCmd::CHECK_NODE_NO_NEXT:
case IrCmd::CHECK_NODE_VALUE:
return true;
default:
break;
@ -156,6 +157,7 @@ inline bool hasResult(IrCmd cmd)
case IrCmd::SUB_NUM:
case IrCmd::MUL_NUM:
case IrCmd::DIV_NUM:
case IrCmd::IDIV_NUM:
case IrCmd::MOD_NUM:
case IrCmd::MIN_NUM:
case IrCmd::MAX_NUM:
@ -168,6 +170,7 @@ inline bool hasResult(IrCmd cmd)
case IrCmd::NOT_ANY:
case IrCmd::CMP_ANY:
case IrCmd::TABLE_LEN:
case IrCmd::TABLE_SETNUM:
case IrCmd::STRING_LEN:
case IrCmd::NEW_TABLE:
case IrCmd::DUP_TABLE:

12
CodeGen/include/Luau/RegisterA64.h
View file

@ -47,18 +47,6 @@ constexpr RegisterA64 castReg(KindA64 kind, RegisterA64 reg)
return RegisterA64{kind, reg.index};
}
// This is equivalent to castReg(KindA64::x), but is separate because it implies different semantics
// Specifically, there are cases when it's useful to treat a wN register as an xN register *after* it has been assigned a value
// Since all A64 instructions that write to wN implicitly zero the top half, this works when we need zero extension semantics
// Crucially, this is *not* safe on an ABI boundary - an int parameter in wN register may have anything in its top half in certain cases
// However, as long as our codegen doesn't use 32-bit truncation by using castReg x=>w, we can safely rely on this.
constexpr RegisterA64 zextReg(RegisterA64 reg)
{
LUAU_ASSERT(reg.kind == KindA64::w);
return RegisterA64{KindA64::x, reg.index};
}
constexpr RegisterA64 noreg{KindA64::none, 0};
constexpr RegisterA64 w0{KindA64::w, 0};

30
CodeGen/src/AssemblyBuilderA64.cpp
View file

@ -105,7 +105,10 @@ void AssemblyBuilderA64::movk(RegisterA64 dst, uint16_t src, int shift)
void AssemblyBuilderA64::add(RegisterA64 dst, RegisterA64 src1, RegisterA64 src2, int shift)
{
placeSR3("add", dst, src1, src2, 0b00'01011, shift);
if (src1.kind == KindA64::x && src2.kind == KindA64::w)
placeER("add", dst, src1, src2, 0b00'01011, shift);
else
placeSR3("add", dst, src1, src2, 0b00'01011, shift);
}
void AssemblyBuilderA64::add(RegisterA64 dst, RegisterA64 src1, uint16_t src2)
@ -115,7 +118,10 @@ void AssemblyBuilderA64::add(RegisterA64 dst, RegisterA64 src1, uint16_t src2)
void AssemblyBuilderA64::sub(RegisterA64 dst, RegisterA64 src1, RegisterA64 src2, int shift)
{
placeSR3("sub", dst, src1, src2, 0b10'01011, shift);
if (src1.kind == KindA64::x && src2.kind == KindA64::w)
placeER("sub", dst, src1, src2, 0b10'01011, shift);
else
placeSR3("sub", dst, src1, src2, 0b10'01011, shift);
}
void AssemblyBuilderA64::sub(RegisterA64 dst, RegisterA64 src1, uint16_t src2)
@ -1075,6 +1081,22 @@ void AssemblyBuilderA64::placeBFM(const char* name, RegisterA64 dst, RegisterA64
commit();
}
void AssemblyBuilderA64::placeER(const char* name, RegisterA64 dst, RegisterA64 src1, RegisterA64 src2, uint8_t op, int shift)
{
if (logText)
log(name, dst, src1, src2, shift);
LUAU_ASSERT(dst.kind == KindA64::x && src1.kind == KindA64::x);
LUAU_ASSERT(src2.kind == KindA64::w);
LUAU_ASSERT(shift >= 0 && shift <= 4);
uint32_t sf = (dst.kind == KindA64::x) ? 0x80000000 : 0; // could be useful in the future for byte->word extends
int option = 0b010; // UXTW
place(dst.index | (src1.index << 5) | (shift << 10) | (option << 13) | (src2.index << 16) | (1 << 21) | (op << 24) | sf);
commit();
}
void AssemblyBuilderA64::place(uint32_t word)
{
LUAU_ASSERT(codePos < codeEnd);
@ -1167,7 +1189,9 @@ void AssemblyBuilderA64::log(const char* opcode, RegisterA64 dst, RegisterA64 sr
log(src1);
text.append(",");
log(src2);
if (shift > 0)
if (src1.kind == KindA64::x && src2.kind == KindA64::w)
logAppend(" UXTW #%d", shift);
else if (shift > 0)
logAppend(" LSL #%d", shift);
else if (shift < 0)
logAppend(" LSR #%d", -shift);

6
CodeGen/src/CodeAllocator.cpp
View file

@ -71,10 +71,12 @@ static uint8_t* allocatePagesImpl(size_t size)
LUAU_ASSERT(size == alignToPageSize(size));
#ifdef __APPLE__
return (uint8_t*)mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON | MAP_JIT, -1, 0);
void* result = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON | MAP_JIT, -1, 0);
#else
return (uint8_t*)mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
void* result = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
#endif
return (result == MAP_FAILED) ? nullptr : static_cast<uint8_t*>(result);
}
static void freePagesImpl(uint8_t* mem, size_t size)

14
CodeGen/src/CodeGenLower.h
View file

@ -74,7 +74,11 @@ inline bool lowerImpl(AssemblyBuilder& build, IrLowering& lowering, IrFunction&
return (a.kind == IrBlockKind::Fallback) < (b.kind == IrBlockKind::Fallback);
// Try to order by instruction order
return a.sortkey < b.sortkey;
if (a.sortkey != b.sortkey)
return a.sortkey < b.sortkey;
// Chains of blocks are merged together by having the same sort key and consecutive chain key
return a.chainkey < b.chainkey;
});
// For each IR instruction that begins a bytecode instruction, which bytecode instruction is it?
@ -100,6 +104,9 @@ inline bool lowerImpl(AssemblyBuilder& build, IrLowering& lowering, IrFunction&
IrBlock dummy;
dummy.start = ~0u;
// Make sure entry block is first
LUAU_ASSERT(sortedBlocks[0] == 0);
for (size_t i = 0; i < sortedBlocks.size(); ++i)
{
uint32_t blockIndex = sortedBlocks[i];
@ -137,6 +144,11 @@ inline bool lowerImpl(AssemblyBuilder& build, IrLowering& lowering, IrFunction&
IrBlock& nextBlock = getNextBlock(function, sortedBlocks, dummy, i);
// Optimizations often propagate information between blocks
// To make sure the register and spill state is correct when blocks are lowered, we check that sorted block order matches the expected one
if (block.expectedNextBlock != ~0u)
LUAU_ASSERT(function.getBlockIndex(nextBlock) == block.expectedNextBlock);
for (uint32_t index = block.start; index <= block.finish; index++)
{
LUAU_ASSERT(index < function.instructions.size());

11
CodeGen/src/EmitCommonX64.cpp
View file

@ -147,13 +147,14 @@ void callSetTable(IrRegAllocX64& regs, AssemblyBuilderX64& build, int rb, Operan
emitUpdateBase(build);
}
void checkObjectBarrierConditions(AssemblyBuilderX64& build, RegisterX64 tmp, RegisterX64 object, int ra, int ratag, Label& skip)
void checkObjectBarrierConditions(AssemblyBuilderX64& build, RegisterX64 tmp, RegisterX64 object, IrOp ra, int ratag, Label& skip)
{
// Barrier should've been optimized away if we know that it's not collectable, checking for correctness
if (ratag == -1 || !isGCO(ratag))
{
// iscollectable(ra)
build.cmp(luauRegTag(ra), LUA_TSTRING);
OperandX64 tag = (ra.kind == IrOpKind::VmReg) ? luauRegTag(vmRegOp(ra)) : luauConstantTag(vmConstOp(ra));
build.cmp(tag, LUA_TSTRING);
build.jcc(ConditionX64::Less, skip);
}
@ -162,12 +163,14 @@ void checkObjectBarrierConditions(AssemblyBuilderX64& build, RegisterX64 tmp, Re
build.jcc(ConditionX64::Zero, skip);
// iswhite(gcvalue(ra))
build.mov(tmp, luauRegValue(ra));
OperandX64 value = (ra.kind == IrOpKind::VmReg) ? luauRegValue(vmRegOp(ra)) : luauConstantValue(vmConstOp(ra));
build.mov(tmp, value);
build.test(byte[tmp + offsetof(GCheader, marked)], bit2mask(WHITE0BIT, WHITE1BIT));
build.jcc(ConditionX64::Zero, skip);
}
void callBarrierObject(IrRegAllocX64& regs, AssemblyBuilderX64& build, RegisterX64 object, IrOp objectOp, int ra, int ratag)
void callBarrierObject(IrRegAllocX64& regs, AssemblyBuilderX64& build, RegisterX64 object, IrOp objectOp, IrOp ra, int ratag)
{
Label skip;

9
CodeGen/src/EmitCommonX64.h
View file

@ -59,7 +59,8 @@ inline uint8_t getXmmRegisterCount(ABIX64 abi)
// Native code is as stackless as the interpreter, so we can place some data on the stack once and have it accessible at any point
// Stack is separated into sections for different data. See CodeGenX64.cpp for layout overview
constexpr unsigned kStackAlign = 8; // Bytes we need to align the stack for non-vol xmm register storage
constexpr unsigned kStackLocalStorage = 8 * kExtraLocals + 8 * kSpillSlots;
constexpr unsigned kStackLocalStorage = 8 * kExtraLocals;
constexpr unsigned kStackSpillStorage = 8 * kSpillSlots;
constexpr unsigned kStackExtraArgumentStorage = 2 * 8; // Bytes for 5th and 6th function call arguments used under Windows ABI
constexpr unsigned kStackRegHomeStorage = 4 * 8; // Register 'home' locations that can be used by callees under Windows ABI
@ -82,7 +83,7 @@ constexpr unsigned kStackOffsetToSpillSlots = kStackOffsetToLocals + kStackLocal
inline unsigned getFullStackSize(ABIX64 abi, uint8_t xmmRegCount)
{
return kStackOffsetToSpillSlots + getNonVolXmmStorageSize(abi, xmmRegCount) + kStackAlign;
return kStackOffsetToSpillSlots + kStackSpillStorage + getNonVolXmmStorageSize(abi, xmmRegCount) + kStackAlign;
}
constexpr OperandX64 sClosure = qword[rsp + kStackOffsetToLocals + 0]; // Closure* cl
@ -201,8 +202,8 @@ void callArithHelper(IrRegAllocX64& regs, AssemblyBuilderX64& build, int ra, int
void callLengthHelper(IrRegAllocX64& regs, AssemblyBuilderX64& build, int ra, int rb);
void callGetTable(IrRegAllocX64& regs, AssemblyBuilderX64& build, int rb, OperandX64 c, int ra);
void callSetTable(IrRegAllocX64& regs, AssemblyBuilderX64& build, int rb, OperandX64 c, int ra);
void checkObjectBarrierConditions(AssemblyBuilderX64& build, RegisterX64 tmp, RegisterX64 object, int ra, int ratag, Label& skip);
void callBarrierObject(IrRegAllocX64& regs, AssemblyBuilderX64& build, RegisterX64 object, IrOp objectOp, int ra, int ratag);
void checkObjectBarrierConditions(AssemblyBuilderX64& build, RegisterX64 tmp, RegisterX64 object, IrOp ra, int ratag, Label& skip);
void callBarrierObject(IrRegAllocX64& regs, AssemblyBuilderX64& build, RegisterX64 object, IrOp objectOp, IrOp ra, int ratag);
void callBarrierTableFast(IrRegAllocX64& regs, AssemblyBuilderX64& build, RegisterX64 table, IrOp tableOp);
void callStepGc(IrRegAllocX64& regs, AssemblyBuilderX64& build);

2
CodeGen/src/IrAnalysis.cpp
View file

@ -257,7 +257,7 @@ static void visitVmRegDefsUses(T& visitor, IrFunction& function, const IrBlock&
break;
case IrCmd::BARRIER_OBJ:
case IrCmd::BARRIER_TABLE_FORWARD:
visitor.use(inst.b);
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)

6
CodeGen/src/IrBuilder.cpp
View file

@ -333,6 +333,9 @@ void IrBuilder::translateInst(LuauOpcode op, const Instruction* pc, int i)
case LOP_DIV:
translateInstBinary(*this, pc, i, TM_DIV);
break;
case LOP_IDIV:
translateInstBinary(*this, pc, i, TM_IDIV);
break;
case LOP_MOD:
translateInstBinary(*this, pc, i, TM_MOD);
break;
@ -351,6 +354,9 @@ void IrBuilder::translateInst(LuauOpcode op, const Instruction* pc, int i)
case LOP_DIVK:
translateInstBinaryK(*this, pc, i, TM_DIV);
break;
case LOP_IDIVK:
translateInstBinaryK(*this, pc, i, TM_IDIV);
break;
case LOP_MODK:
translateInstBinaryK(*this, pc, i, TM_MOD);
break;

6
CodeGen/src/IrDump.cpp
View file

@ -125,6 +125,8 @@ const char* getCmdName(IrCmd cmd)
return "MUL_NUM";
case IrCmd::DIV_NUM:
return "DIV_NUM";
case IrCmd::IDIV_NUM:
return "IDIV_NUM";
case IrCmd::MOD_NUM:
return "MOD_NUM";
case IrCmd::MIN_NUM:
@ -169,6 +171,8 @@ const char* getCmdName(IrCmd cmd)
return "JUMP_SLOT_MATCH";
case IrCmd::TABLE_LEN:
return "TABLE_LEN";
case IrCmd::TABLE_SETNUM:
return "TABLE_SETNUM";
case IrCmd::STRING_LEN:
return "STRING_LEN";
case IrCmd::NEW_TABLE:
@ -229,6 +233,8 @@ const char* getCmdName(IrCmd cmd)
return "CHECK_SLOT_MATCH";
case IrCmd::CHECK_NODE_NO_NEXT:
return "CHECK_NODE_NO_NEXT";
case IrCmd::CHECK_NODE_VALUE:
return "CHECK_NODE_VALUE";
case IrCmd::INTERRUPT:
return "INTERRUPT";
case IrCmd::CHECK_GC:

147
CodeGen/src/IrLoweringA64.cpp
View file

@ -58,30 +58,6 @@ inline ConditionA64 getConditionFP(IrCondition cond)
}
}
static void checkObjectBarrierConditions(AssemblyBuilderA64& build, RegisterA64 object, RegisterA64 temp, int ra, int ratag, Label& skip)
{
RegisterA64 tempw = castReg(KindA64::w, temp);
// Barrier should've been optimized away if we know that it's not collectable, checking for correctness
if (ratag == -1 || !isGCO(ratag))
{
// iscollectable(ra)
build.ldr(tempw, mem(rBase, ra * sizeof(TValue) + offsetof(TValue, tt)));
build.cmp(tempw, LUA_TSTRING);
build.b(ConditionA64::Less, skip);
}
// isblack(obj2gco(o))
build.ldrb(tempw, mem(object, offsetof(GCheader, marked)));
build.tbz(tempw, BLACKBIT, skip);
// iswhite(gcvalue(ra))
build.ldr(temp, mem(rBase, ra * sizeof(TValue) + offsetof(TValue, value)));
build.ldrb(tempw, mem(temp, offsetof(GCheader, marked)));
build.tst(tempw, bit2mask(WHITE0BIT, WHITE1BIT));
build.b(ConditionA64::Equal, skip); // Equal = Zero after tst
}
static void emitAddOffset(AssemblyBuilderA64& build, RegisterA64 dst, RegisterA64 src, size_t offset)
{
LUAU_ASSERT(dst != src);
@ -98,6 +74,47 @@ static void emitAddOffset(AssemblyBuilderA64& build, RegisterA64 dst, RegisterA6
}
}
static void checkObjectBarrierConditions(AssemblyBuilderA64& build, RegisterA64 object, RegisterA64 temp, IrOp ra, int ratag, Label& skip)
{
RegisterA64 tempw = castReg(KindA64::w, temp);
AddressA64 addr = temp;
// iscollectable(ra)
if (ratag == -1 || !isGCO(ratag))
{
if (ra.kind == IrOpKind::VmReg)
{
addr = mem(rBase, vmRegOp(ra) * sizeof(TValue) + offsetof(TValue, tt));
}
else if (ra.kind == IrOpKind::VmConst)
{
emitAddOffset(build, temp, rConstants, vmConstOp(ra) * sizeof(TValue) + offsetof(TValue, tt));
}
build.ldr(tempw, addr);
build.cmp(tempw, LUA_TSTRING);
build.b(ConditionA64::Less, skip);
}
// isblack(obj2gco(o))
build.ldrb(tempw, mem(object, offsetof(GCheader, marked)));
build.tbz(tempw, BLACKBIT, skip);
// iswhite(gcvalue(ra))
if (ra.kind == IrOpKind::VmReg)
{
addr = mem(rBase, vmRegOp(ra) * sizeof(TValue) + offsetof(TValue, value));
}
else if (ra.kind == IrOpKind::VmConst)
{
emitAddOffset(build, temp, rConstants, vmConstOp(ra) * sizeof(TValue) + offsetof(TValue, value));
}
build.ldr(temp, addr);
build.ldrb(tempw, mem(temp, offsetof(GCheader, marked)));
build.tst(tempw, bit2mask(WHITE0BIT, WHITE1BIT));
build.b(ConditionA64::Equal, skip); // Equal = Zero after tst
}
static void emitAbort(AssemblyBuilderA64& build, Label& abort)
{
Label skip;
@ -242,7 +259,7 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
if (inst.b.kind == IrOpKind::Inst)
{
build.add(inst.regA64, inst.regA64, zextReg(regOp(inst.b)), kTValueSizeLog2);
build.add(inst.regA64, inst.regA64, regOp(inst.b), kTValueSizeLog2);
}
else if (inst.b.kind == IrOpKind::Constant)
{
@ -271,6 +288,7 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
RegisterA64 temp1 = regs.allocTemp(KindA64::x);
RegisterA64 temp1w = castReg(KindA64::w, temp1);
RegisterA64 temp2 = regs.allocTemp(KindA64::w);
RegisterA64 temp2x = castReg(KindA64::x, temp2);
// note: since the stride of the load is the same as the destination register size, we can range check the array index, not the byte offset
if (uintOp(inst.b) <= AddressA64::kMaxOffset)
@ -288,7 +306,7 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
// note: this may clobber inst.a, so it's important that we don't use it after this
build.ldr(inst.regA64, mem(regOp(inst.a), offsetof(Table, node)));
build.add(inst.regA64, inst.regA64, zextReg(temp2), kLuaNodeSizeLog2);
build.add(inst.regA64, inst.regA64, temp2x, kLuaNodeSizeLog2); // "zero extend" temp2 to get a larger shift (top 32 bits are zero)
break;
}
case IrCmd::GET_HASH_NODE_ADDR:
@ -296,6 +314,7 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
inst.regA64 = regs.allocReuse(KindA64::x, index, {inst.a});
RegisterA64 temp1 = regs.allocTemp(KindA64::w);
RegisterA64 temp2 = regs.allocTemp(KindA64::w);
RegisterA64 temp2x = castReg(KindA64::x, temp2);
// hash & ((1 << lsizenode) - 1) == hash & ~(-1 << lsizenode)
build.mov(temp1, -1);
@ -306,7 +325,7 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
// note: this may clobber inst.a, so it's important that we don't use it after this
build.ldr(inst.regA64, mem(regOp(inst.a), offsetof(Table, node)));
build.add(inst.regA64, inst.regA64, zextReg(temp2), kLuaNodeSizeLog2);
build.add(inst.regA64, inst.regA64, temp2x, kLuaNodeSizeLog2); // "zero extend" temp2 to get a larger shift (top 32 bits are zero)
break;
}
case IrCmd::GET_CLOSURE_UPVAL_ADDR:
@ -477,6 +496,15 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
build.fdiv(inst.regA64, temp1, temp2);
break;
}
case IrCmd::IDIV_NUM:
{
inst.regA64 = regs.allocReuse(KindA64::d, index, {inst.a, inst.b});
RegisterA64 temp1 = tempDouble(inst.a);
RegisterA64 temp2 = tempDouble(inst.b);
build.fdiv(inst.regA64, temp1, temp2);
build.frintm(inst.regA64, inst.regA64);
break;
}
case IrCmd::MOD_NUM:
{
inst.regA64 = regs.allocReg(KindA64::d, index); // can't allocReuse because both A and B are used twice
@ -604,9 +632,7 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
emitUpdateBase(build);
// since w0 came from a call, we need to move it so that we don't violate zextReg safety contract
inst.regA64 = regs.allocReg(KindA64::w, index);
build.mov(inst.regA64, w0);
inst.regA64 = regs.takeReg(w0, index);
break;
}
case IrCmd::JUMP:
@ -750,8 +776,8 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
build.mov(x0, reg);
build.ldr(x1, mem(rNativeContext, offsetof(NativeContext, luaH_getn)));
build.blr(x1);
inst.regA64 = regs.allocReg(KindA64::d, index);
build.scvtf(inst.regA64, w0);
inst.regA64 = regs.takeReg(w0, index);
break;
}
case IrCmd::STRING_LEN:
@ -761,6 +787,33 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
build.ldr(inst.regA64, mem(regOp(inst.a), offsetof(TString, len)));
break;
}
case IrCmd::TABLE_SETNUM:
{
// note: we need to call regOp before spill so that we don't do redundant reloads
RegisterA64 table = regOp(inst.a);
RegisterA64 key = regOp(inst.b);
RegisterA64 temp = regs.allocTemp(KindA64::w);
regs.spill(build, index, {table, key});
if (w1 != key)
{
build.mov(x1, table);
build.mov(w2, key);
}
else
{
build.mov(temp, w1);
build.mov(x1, table);
build.mov(w2, temp);
}
build.mov(x0, rState);
build.ldr(x3, mem(rNativeContext, offsetof(NativeContext, luaH_setnum)));
build.blr(x3);
inst.regA64 = regs.takeReg(x0, index);
break;
}
case IrCmd::NEW_TABLE:
{
regs.spill(build, index);
@ -854,8 +907,6 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
inst.regA64 = regs.allocReg(KindA64::w, index);
RegisterA64 temp = tempDouble(inst.a);
build.fcvtzs(castReg(KindA64::x, inst.regA64), temp);
// truncation needs to clear high bits to preserve zextReg safety contract
build.mov(inst.regA64, inst.regA64);
break;
}
case IrCmd::ADJUST_STACK_TO_REG:
@ -870,7 +921,7 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
else if (inst.b.kind == IrOpKind::Inst)
{
build.add(temp, rBase, uint16_t(vmRegOp(inst.a) * sizeof(TValue)));
build.add(temp, temp, zextReg(regOp(inst.b)), kTValueSizeLog2);
build.add(temp, temp, regOp(inst.b), kTValueSizeLog2);
build.str(temp, mem(rState, offsetof(lua_State, top)));
}
else
@ -919,9 +970,7 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
build.ldr(x6, mem(rNativeContext, offsetof(NativeContext, luauF_table) + uintOp(inst.a) * sizeof(luau_FastFunction)));
build.blr(x6);
// since w0 came from a call, we need to move it so that we don't violate zextReg safety contract
inst.regA64 = regs.allocReg(KindA64::w, index);
build.mov(inst.regA64, w0);
inst.regA64 = regs.takeReg(w0, index);
break;
}
case IrCmd::CHECK_FASTCALL_RES:
@ -1063,7 +1112,7 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
if (inst.c.kind == IrOpKind::Undef || isGCO(tagOp(inst.c)))
{
Label skip;
checkObjectBarrierConditions(build, temp1, temp2, vmRegOp(inst.b), inst.c.kind == IrOpKind::Undef ? -1 : tagOp(inst.c), skip);
checkObjectBarrierConditions(build, temp1, temp2, inst.b, inst.c.kind == IrOpKind::Undef ? -1 : tagOp(inst.c), skip);
size_t spills = regs.spill(build, index, {temp1});
@ -1244,6 +1293,17 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
finalizeTargetLabel(inst.b, fresh);
break;
}
case IrCmd::CHECK_NODE_VALUE:
{
Label fresh; // used when guard aborts execution or jumps to a VM exit
RegisterA64 temp = regs.allocTemp(KindA64::w);
build.ldr(temp, mem(regOp(inst.a), offsetof(LuaNode, val.tt)));
LUAU_ASSERT(LUA_TNIL == 0);
build.cbz(temp, getTargetLabel(inst.b, fresh));
finalizeTargetLabel(inst.b, fresh);
break;
}
case IrCmd::INTERRUPT:
{
regs.spill(build, index);
@ -1288,7 +1348,7 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
RegisterA64 temp = regs.allocTemp(KindA64::x);
Label skip;
checkObjectBarrierConditions(build, regOp(inst.a), temp, vmRegOp(inst.b), inst.c.kind == IrOpKind::Undef ? -1 : tagOp(inst.c), skip);
checkObjectBarrierConditions(build, regOp(inst.a), temp, inst.b, inst.c.kind == IrOpKind::Undef ? -1 : tagOp(inst.c), skip);
RegisterA64 reg = regOp(inst.a); // note: we need to call regOp before spill so that we don't do redundant reloads
size_t spills = regs.spill(build, index, {reg});
@ -1332,13 +1392,14 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
RegisterA64 temp = regs.allocTemp(KindA64::x);
Label skip;
checkObjectBarrierConditions(build, regOp(inst.a), temp, vmRegOp(inst.b), inst.c.kind == IrOpKind::Undef ? -1 : tagOp(inst.c), skip);
checkObjectBarrierConditions(build, regOp(inst.a), temp, inst.b, inst.c.kind == IrOpKind::Undef ? -1 : tagOp(inst.c), skip);
RegisterA64 reg = regOp(inst.a); // note: we need to call regOp before spill so that we don't do redundant reloads
AddressA64 addr = tempAddr(inst.b, offsetof(TValue, value));
size_t spills = regs.spill(build, index, {reg});
build.mov(x1, reg);
build.mov(x0, rState);
build.ldr(x2, mem(rBase, vmRegOp(inst.b) * sizeof(TValue) + offsetof(TValue, value)));
build.ldr(x2, addr);
build.ldr(x3, mem(rNativeContext, offsetof(NativeContext, luaC_barriertable)));
build.blr(x3);
@ -1829,7 +1890,7 @@ void IrLoweringA64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
LUAU_ASSERT(sizeof(TString*) == 8);
if (inst.a.kind == IrOpKind::Inst)
build.add(inst.regA64, rGlobalState, zextReg(regOp(inst.a)), 3);
build.add(inst.regA64, rGlobalState, regOp(inst.a), 3);
else if (inst.a.kind == IrOpKind::Constant)
build.add(inst.regA64, rGlobalState, uint16_t(tagOp(inst.a)) * 8);
else

43
CodeGen/src/IrLoweringX64.cpp
View file

@ -407,6 +407,22 @@ void IrLoweringX64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
build.vdivsd(inst.regX64, regOp(inst.a), memRegDoubleOp(inst.b));
}
break;
case IrCmd::IDIV_NUM:
inst.regX64 = regs.allocRegOrReuse(SizeX64::xmmword, index, {inst.a, inst.b});
if (inst.a.kind == IrOpKind::Constant)
{
ScopedRegX64 tmp{regs, SizeX64::xmmword};
build.vmovsd(tmp.reg, memRegDoubleOp(inst.a));
build.vdivsd(inst.regX64, tmp.reg, memRegDoubleOp(inst.b));
}
else
{
build.vdivsd(inst.regX64, regOp(inst.a), memRegDoubleOp(inst.b));
}
build.vroundsd(inst.regX64, inst.regX64, inst.regX64, RoundingModeX64::RoundToNegativeInfinity);
break;
case IrCmd::MOD_NUM:
{
inst.regX64 = regs.allocRegOrReuse(SizeX64::xmmword, index, {inst.a, inst.b});
@ -697,9 +713,17 @@ void IrLoweringX64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
IrCallWrapperX64 callWrap(regs, build, index);
callWrap.addArgument(SizeX64::qword, regOp(inst.a), inst.a);
callWrap.call(qword[rNativeContext + offsetof(NativeContext, luaH_getn)]);
inst.regX64 = regs.allocReg(SizeX64::xmmword, index);
build.vcvtsi2sd(inst.regX64, inst.regX64, eax);
inst.regX64 = regs.takeReg(eax, index);
break;
}
case IrCmd::TABLE_SETNUM:
{
IrCallWrapperX64 callWrap(regs, build, index);
callWrap.addArgument(SizeX64::qword, rState);
callWrap.addArgument(SizeX64::qword, regOp(inst.a), inst.a);
callWrap.addArgument(SizeX64::dword, regOp(inst.b), inst.b);
callWrap.call(qword[rNativeContext + offsetof(NativeContext, luaH_setnum)]);
inst.regX64 = regs.takeReg(rax, index);
break;
}
case IrCmd::STRING_LEN:
@ -997,7 +1021,7 @@ void IrLoweringX64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
tmp1.free();
if (inst.c.kind == IrOpKind::Undef || isGCO(tagOp(inst.c)))
callBarrierObject(regs, build, tmp2.release(), {}, vmRegOp(inst.b), inst.c.kind == IrOpKind::Undef ? -1 : tagOp(inst.c));
callBarrierObject(regs, build, tmp2.release(), {}, inst.b, inst.c.kind == IrOpKind::Undef ? -1 : tagOp(inst.c));
break;
}
case IrCmd::CHECK_TAG:
@ -1106,6 +1130,12 @@ void IrLoweringX64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
jumpOrAbortOnUndef(ConditionX64::NotZero, inst.b, next);
break;
}
case IrCmd::CHECK_NODE_VALUE:
{
build.cmp(dword[regOp(inst.a) + offsetof(LuaNode, val) + offsetof(TValue, tt)], LUA_TNIL);
jumpOrAbortOnUndef(ConditionX64::Equal, inst.b, next);
break;
}
case IrCmd::INTERRUPT:
{
unsigned pcpos = uintOp(inst.a);
@ -1132,7 +1162,7 @@ void IrLoweringX64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
callStepGc(regs, build);
break;
case IrCmd::BARRIER_OBJ:
callBarrierObject(regs, build, regOp(inst.a), inst.a, vmRegOp(inst.b), inst.c.kind == IrOpKind::Undef ? -1 : tagOp(inst.c));
callBarrierObject(regs, build, regOp(inst.a), inst.a, inst.b, inst.c.kind == IrOpKind::Undef ? -1 : tagOp(inst.c));
break;
case IrCmd::BARRIER_TABLE_BACK:
callBarrierTableFast(regs, build, regOp(inst.a), inst.a);
@ -1142,7 +1172,8 @@ void IrLoweringX64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
Label skip;
ScopedRegX64 tmp{regs, SizeX64::qword};
checkObjectBarrierConditions(build, tmp.reg, regOp(inst.a), vmRegOp(inst.b), inst.c.kind == IrOpKind::Undef ? -1 : tagOp(inst.c), skip);
checkObjectBarrierConditions(build, tmp.reg, regOp(inst.a), inst.b, inst.c.kind == IrOpKind::Undef ? -1 : tagOp(inst.c), skip);
{
ScopedSpills spillGuard(regs);

8
CodeGen/src/IrRegAllocA64.cpp
View file

@ -70,9 +70,9 @@ static int getReloadOffset(IrCmd cmd)
LUAU_UNREACHABLE();
}
static AddressA64 getReloadAddress(const IrFunction& function, const IrInst& inst)
static AddressA64 getReloadAddress(const IrFunction& function, const IrInst& inst, bool limitToCurrentBlock)
{
IrOp location = function.findRestoreOp(inst);
IrOp location = function.findRestoreOp(inst, limitToCurrentBlock);
if (location.kind == IrOpKind::VmReg)
return mem(rBase, vmRegOp(location) * sizeof(TValue) + getReloadOffset(inst.cmd));
@ -99,7 +99,7 @@ static void restoreInst(AssemblyBuilderA64& build, uint32_t& freeSpillSlots, IrF
else
{
LUAU_ASSERT(!inst.spilled && inst.needsReload);
AddressA64 addr = getReloadAddress(function, function.instructions[s.inst]);
AddressA64 addr = getReloadAddress(function, function.instructions[s.inst], /*limitToCurrentBlock*/ false);
LUAU_ASSERT(addr.base != xzr);
build.ldr(reg, addr);
}
@ -321,7 +321,7 @@ size_t IrRegAllocA64::spill(AssemblyBuilderA64& build, uint32_t index, std::init
{
// instead of spilling the register to never reload it, we assume the register is not needed anymore
}
else if (getReloadAddress(function, def).base != xzr)
else if (getReloadAddress(function, def, /*limitToCurrentBlock*/ true).base != xzr)
{
// instead of spilling the register to stack, we can reload it from VM stack/constants
// we still need to record the spill for restore(start) to work

11
CodeGen/src/IrRegAllocX64.cpp
View file

@ -338,7 +338,9 @@ unsigned IrRegAllocX64::findSpillStackSlot(IrValueKind valueKind)
IrOp IrRegAllocX64::getRestoreOp(const IrInst& inst) const
{
if (IrOp location = function.findRestoreOp(inst); location.kind == IrOpKind::VmReg || location.kind == IrOpKind::VmConst)
// When restoring the value, we allow cross-block restore because we have commited to the target location at spill time
if (IrOp location = function.findRestoreOp(inst, /*limitToCurrentBlock*/ false);
location.kind == IrOpKind::VmReg || location.kind == IrOpKind::VmConst)
return location;
return IrOp();
@ -346,11 +348,16 @@ IrOp IrRegAllocX64::getRestoreOp(const IrInst& inst) const
bool IrRegAllocX64::hasRestoreOp(const IrInst& inst) const
{
return getRestoreOp(inst).kind != IrOpKind::None;
// When checking if value has a restore operation to spill it, we only allow it in the same block
IrOp location = function.findRestoreOp(inst, /*limitToCurrentBlock*/ true);
return location.kind == IrOpKind::VmReg || location.kind == IrOpKind::VmConst;
}
OperandX64 IrRegAllocX64::getRestoreAddress(const IrInst& inst, IrOp restoreOp)
{
LUAU_ASSERT(restoreOp.kind != IrOpKind::None);
switch (getCmdValueKind(inst.cmd))
{
case IrValueKind::Unknown:

24
CodeGen/src/IrTranslateBuiltins.cpp
View file

@ -748,6 +748,28 @@ static BuiltinImplResult translateBuiltinVector(IrBuilder& build, int nparams, i
return {BuiltinImplType::Full, 1};
}
static BuiltinImplResult translateBuiltinTableInsert(IrBuilder& build, int nparams, int ra, int arg, IrOp args, int nresults, int pcpos)
{
if (nparams != 2 || nresults > 0)
return {BuiltinImplType::None, -1};
build.loadAndCheckTag(build.vmReg(arg), LUA_TTABLE, build.vmExit(pcpos));
IrOp table = build.inst(IrCmd::LOAD_POINTER, build.vmReg(arg));
build.inst(IrCmd::CHECK_READONLY, table, build.vmExit(pcpos));
IrOp pos = build.inst(IrCmd::ADD_INT, build.inst(IrCmd::TABLE_LEN, table), build.constInt(1));
IrOp setnum = build.inst(IrCmd::TABLE_SETNUM, table, pos);
IrOp va = build.inst(IrCmd::LOAD_TVALUE, args);
build.inst(IrCmd::STORE_TVALUE, setnum, va);
build.inst(IrCmd::BARRIER_TABLE_FORWARD, table, args, build.undef());
return {BuiltinImplType::Full, 0};
}
static BuiltinImplResult translateBuiltinStringLen(IrBuilder& build, int nparams, int ra, int arg, IrOp args, int nresults, int pcpos)
{
if (nparams < 1 || nresults > 1)
@ -849,6 +871,8 @@ BuiltinImplResult translateBuiltin(IrBuilder& build, int bfid, int ra, int arg,
return translateBuiltinTypeof(build, nparams, ra, arg, args, nresults);
case LBF_VECTOR:
return translateBuiltinVector(build, nparams, ra, arg, args, nresults, pcpos);
case LBF_TABLE_INSERT:
return translateBuiltinTableInsert(build, nparams, ra, arg, args, nresults, pcpos);
case LBF_STRING_LEN:
return translateBuiltinStringLen(build, nparams, ra, arg, args, nresults, pcpos);
default:

18
CodeGen/src/IrTranslation.cpp
View file

@ -382,6 +382,9 @@ static void translateInstBinaryNumeric(IrBuilder& build, int ra, int rb, int rc,
case TM_DIV:
result = build.inst(IrCmd::DIV_NUM, vb, vc);
break;
case TM_IDIV:
result = build.inst(IrCmd::IDIV_NUM, vb, vc);
break;
case TM_MOD:
result = build.inst(IrCmd::MOD_NUM, vb, vc);
break;
@ -472,8 +475,9 @@ void translateInstLength(IrBuilder& build, const Instruction* pc, int pcpos)
build.inst(IrCmd::CHECK_NO_METATABLE, vb, fallback);
IrOp va = build.inst(IrCmd::TABLE_LEN, vb);
IrOp vai = build.inst(IrCmd::INT_TO_NUM, va);
build.inst(IrCmd::STORE_DOUBLE, build.vmReg(ra), va);
build.inst(IrCmd::STORE_DOUBLE, build.vmReg(ra), vai);
build.inst(IrCmd::STORE_TAG, build.vmReg(ra), build.constTag(LUA_TNUMBER));
IrOp next = build.blockAtInst(pcpos + 1);
@ -554,7 +558,7 @@ IrOp translateFastCallN(IrBuilder& build, const Instruction* pc, int pcpos, bool
IrOp builtinArgs = args;
if (customArgs.kind == IrOpKind::VmConst)
if (customArgs.kind == IrOpKind::VmConst && bfid != LBF_TABLE_INSERT)
{
TValue protok = build.function.proto->k[customArgs.index];
@ -976,7 +980,7 @@ void translateInstGetTableKS(IrBuilder& build, const Instruction* pc, int pcpos)
IrOp vb = build.inst(IrCmd::LOAD_POINTER, build.vmReg(rb));
IrOp addrSlotEl = build.inst(IrCmd::GET_SLOT_NODE_ADDR, vb, build.constUint(pcpos));
IrOp addrSlotEl = build.inst(IrCmd::GET_SLOT_NODE_ADDR, vb, build.constUint(pcpos), build.vmConst(aux));
build.inst(IrCmd::CHECK_SLOT_MATCH, addrSlotEl, build.vmConst(aux), fallback);
@ -1003,7 +1007,7 @@ void translateInstSetTableKS(IrBuilder& build, const Instruction* pc, int pcpos)
IrOp vb = build.inst(IrCmd::LOAD_POINTER, build.vmReg(rb));
IrOp addrSlotEl = build.inst(IrCmd::GET_SLOT_NODE_ADDR, vb, build.constUint(pcpos));
IrOp addrSlotEl = build.inst(IrCmd::GET_SLOT_NODE_ADDR, vb, build.constUint(pcpos), build.vmConst(aux));
build.inst(IrCmd::CHECK_SLOT_MATCH, addrSlotEl, build.vmConst(aux), fallback);
build.inst(IrCmd::CHECK_READONLY, vb, fallback);
@ -1028,7 +1032,7 @@ void translateInstGetGlobal(IrBuilder& build, const Instruction* pc, int pcpos)
IrOp fallback = build.block(IrBlockKind::Fallback);
IrOp env = build.inst(IrCmd::LOAD_ENV);
IrOp addrSlotEl = build.inst(IrCmd::GET_SLOT_NODE_ADDR, env, build.constUint(pcpos));
IrOp addrSlotEl = build.inst(IrCmd::GET_SLOT_NODE_ADDR, env, build.constUint(pcpos), build.vmConst(aux));
build.inst(IrCmd::CHECK_SLOT_MATCH, addrSlotEl, build.vmConst(aux), fallback);
@ -1050,7 +1054,7 @@ void translateInstSetGlobal(IrBuilder& build, const Instruction* pc, int pcpos)
IrOp fallback = build.block(IrBlockKind::Fallback);
IrOp env = build.inst(IrCmd::LOAD_ENV);
IrOp addrSlotEl = build.inst(IrCmd::GET_SLOT_NODE_ADDR, env, build.constUint(pcpos));
IrOp addrSlotEl = build.inst(IrCmd::GET_SLOT_NODE_ADDR, env, build.constUint(pcpos), build.vmConst(aux));
build.inst(IrCmd::CHECK_SLOT_MATCH, addrSlotEl, build.vmConst(aux), fallback);
build.inst(IrCmd::CHECK_READONLY, env, fallback);
@ -1141,7 +1145,7 @@ void translateInstNamecall(IrBuilder& build, const Instruction* pc, int pcpos)
build.loadAndCheckTag(indexPtr, LUA_TTABLE, fallback);
IrOp index = build.inst(IrCmd::LOAD_POINTER, indexPtr);
IrOp addrIndexNodeEl = build.inst(IrCmd::GET_SLOT_NODE_ADDR, index, build.constUint(pcpos));
IrOp addrIndexNodeEl = build.inst(IrCmd::GET_SLOT_NODE_ADDR, index, build.constUint(pcpos), build.vmConst(aux));
build.inst(IrCmd::CHECK_SLOT_MATCH, addrIndexNodeEl, build.vmConst(aux), fallback);
// TODO: original 'table' was clobbered by a call inside 'FASTGETTM'

10
CodeGen/src/IrUtils.cpp
View file

@ -54,6 +54,7 @@ IrValueKind getCmdValueKind(IrCmd cmd)
case IrCmd::SUB_NUM:
case IrCmd::MUL_NUM:
case IrCmd::DIV_NUM:
case IrCmd::IDIV_NUM:
case IrCmd::MOD_NUM:
case IrCmd::MIN_NUM:
case IrCmd::MAX_NUM:
@ -79,7 +80,9 @@ IrValueKind getCmdValueKind(IrCmd cmd)
case IrCmd::JUMP_SLOT_MATCH:
return IrValueKind::None;
case IrCmd::TABLE_LEN:
return IrValueKind::Double;
return IrValueKind::Int;
case IrCmd::TABLE_SETNUM:
return IrValueKind::Pointer;
case IrCmd::STRING_LEN:
return IrValueKind::Int;
case IrCmd::NEW_TABLE:
@ -119,6 +122,7 @@ IrValueKind getCmdValueKind(IrCmd cmd)
case IrCmd::CHECK_ARRAY_SIZE:
case IrCmd::CHECK_SLOT_MATCH:
case IrCmd::CHECK_NODE_NO_NEXT:
case IrCmd::CHECK_NODE_VALUE:
case IrCmd::INTERRUPT:
case IrCmd::CHECK_GC:
case IrCmd::BARRIER_OBJ:
@ -464,6 +468,10 @@ void foldConstants(IrBuilder& build, IrFunction& function, IrBlock& block, uint3
if (inst.a.kind == IrOpKind::Constant && inst.b.kind == IrOpKind::Constant)
substitute(function, inst, build.constDouble(function.doubleOp(inst.a) / function.doubleOp(inst.b)));
break;
case IrCmd::IDIV_NUM:
if (inst.a.kind == IrOpKind::Constant && inst.b.kind == IrOpKind::Constant)
substitute(function, inst, build.constDouble(luai_numidiv(function.doubleOp(inst.a), function.doubleOp(inst.b))));
break;
case IrCmd::MOD_NUM:
if (inst.a.kind == IrOpKind::Constant && inst.b.kind == IrOpKind::Constant)
substitute(function, inst, build.constDouble(luai_nummod(function.doubleOp(inst.a), function.doubleOp(inst.b))));

3
CodeGen/src/IrValueLocationTracking.cpp
View file

@ -108,13 +108,14 @@ void IrValueLocationTracking::beforeInstLowering(IrInst& inst)
case IrCmd::FINDUPVAL:
break;
// These instrucitons read VmReg only after optimizeMemoryOperandsX64
// These instructions read VmReg only after optimizeMemoryOperandsX64
case IrCmd::CHECK_TAG:
case IrCmd::CHECK_TRUTHY:
case IrCmd::ADD_NUM:
case IrCmd::SUB_NUM:
case IrCmd::MUL_NUM:
case IrCmd::DIV_NUM:
case IrCmd::IDIV_NUM:
case IrCmd::MOD_NUM:
case IrCmd::MIN_NUM:
case IrCmd::MAX_NUM:

1
CodeGen/src/NativeState.cpp
View file

@ -53,6 +53,7 @@ void initFunctions(NativeState& data)
data.context.luaH_new = luaH_new;
data.context.luaH_clone = luaH_clone;
data.context.luaH_resizearray = luaH_resizearray;
data.context.luaH_setnum = luaH_setnum;
data.context.luaC_barriertable = luaC_barriertable;
data.context.luaC_barrierf = luaC_barrierf;

1
CodeGen/src/NativeState.h
View file

@ -44,6 +44,7 @@ struct NativeContext
Table* (*luaH_new)(lua_State* L, int narray, int lnhash) = nullptr;
Table* (*luaH_clone)(lua_State* L, Table* tt) = nullptr;
void (*luaH_resizearray)(lua_State* L, Table* t, int nasize) = nullptr;
TValue* (*luaH_setnum)(lua_State* L, Table* t, int key);
void (*luaC_barriertable)(lua_State* L, Table* t, GCObject* v) = nullptr;
void (*luaC_barrierf)(lua_State* L, GCObject* o, GCObject* v) = nullptr;

139
CodeGen/src/OptimizeConstProp.cpp
View file

@ -13,7 +13,10 @@
#include <vector>
LUAU_FASTINTVARIABLE(LuauCodeGenMinLinearBlockPath, 3)
LUAU_FASTINTVARIABLE(LuauCodeGenReuseSlotLimit, 64)
LUAU_FASTFLAGVARIABLE(DebugLuauAbortingChecks, false)
LUAU_FASTFLAGVARIABLE(LuauReuseHashSlots2, false)
LUAU_FASTFLAGVARIABLE(LuauKeepVmapLinear, false)
namespace Luau
{
@ -174,6 +177,10 @@ struct ConstPropState
{
for (int i = 0; i <= maxReg; ++i)
invalidateHeap(regs[i]);
// If table memory has changed, we can't reuse previously computed and validated table slot lookups
getSlotNodeCache.clear();
checkSlotMatchCache.clear();
}
void invalidateHeap(RegisterInfo& reg)
@ -190,6 +197,21 @@ struct ConstPropState
inSafeEnv = false;
}
void invalidateTableArraySize()
{
for (int i = 0; i <= maxReg; ++i)
invalidateTableArraySize(regs[i]);
// If table memory has changed, we can't reuse previously computed and validated table slot lookups
getSlotNodeCache.clear();
checkSlotMatchCache.clear();
}
void invalidateTableArraySize(RegisterInfo& reg)
{
reg.knownTableArraySize = -1;
}
void createRegLink(uint32_t instIdx, IrOp regOp)
{
LUAU_ASSERT(!instLink.contains(instIdx));
@ -367,6 +389,8 @@ struct ConstPropState
instLink.clear();
valueMap.clear();
getSlotNodeCache.clear();
checkSlotMatchCache.clear();
}
IrFunction& function;
@ -384,6 +408,9 @@ struct ConstPropState
DenseHashMap<uint32_t, RegisterLink> instLink{~0u};
DenseHashMap<IrInst, uint32_t, IrInstHash, IrInstEq> valueMap;
std::vector<uint32_t> getSlotNodeCache;
std::vector<uint32_t> checkSlotMatchCache;
};
static void handleBuiltinEffects(ConstPropState& state, LuauBuiltinFunction bfid, uint32_t firstReturnReg, int nresults)
@ -863,7 +890,25 @@ static void constPropInInst(ConstPropState& state, IrBuilder& build, IrFunction&
case IrCmd::NOP:
case IrCmd::LOAD_ENV:
case IrCmd::GET_ARR_ADDR:
break;
case IrCmd::GET_SLOT_NODE_ADDR:
if (!FFlag::LuauReuseHashSlots2)
break;
for (uint32_t prevIdx : state.getSlotNodeCache)
{
const IrInst& prev = function.instructions[prevIdx];
if (prev.a == inst.a && prev.c == inst.c)
{
substitute(function, inst, IrOp{IrOpKind::Inst, prevIdx});
return; // Break out from both the loop and the switch
}
}
if (int(state.getSlotNodeCache.size()) < FInt::LuauCodeGenReuseSlotLimit)
state.getSlotNodeCache.push_back(index);
break;
case IrCmd::GET_HASH_NODE_ADDR:
case IrCmd::GET_CLOSURE_UPVAL_ADDR:
break;
@ -873,6 +918,7 @@ static void constPropInInst(ConstPropState& state, IrBuilder& build, IrFunction&
case IrCmd::SUB_NUM:
case IrCmd::MUL_NUM:
case IrCmd::DIV_NUM:
case IrCmd::IDIV_NUM:
case IrCmd::MOD_NUM:
case IrCmd::MIN_NUM:
case IrCmd::MAX_NUM:
@ -892,6 +938,10 @@ static void constPropInInst(ConstPropState& state, IrBuilder& build, IrFunction&
case IrCmd::JUMP_EQ_POINTER:
case IrCmd::JUMP_SLOT_MATCH:
case IrCmd::TABLE_LEN:
break;
case IrCmd::TABLE_SETNUM:
state.invalidateTableArraySize();
break;
case IrCmd::STRING_LEN:
case IrCmd::NEW_TABLE:
case IrCmd::DUP_TABLE:
@ -938,7 +988,26 @@ static void constPropInInst(ConstPropState& state, IrBuilder& build, IrFunction&
break;
}
case IrCmd::CHECK_SLOT_MATCH:
if (!FFlag::LuauReuseHashSlots2)
break;
for (uint32_t prevIdx : state.checkSlotMatchCache)
{
const IrInst& prev = function.instructions[prevIdx];
if (prev.a == inst.a && prev.b == inst.b)
{
// Only a check for 'nil' value is left
replace(function, block, index, {IrCmd::CHECK_NODE_VALUE, inst.a, inst.c});
return; // Break out from both the loop and the switch
}
}
if (int(state.checkSlotMatchCache.size()) < FInt::LuauCodeGenReuseSlotLimit)
state.checkSlotMatchCache.push_back(index);
break;
case IrCmd::CHECK_NODE_NO_NEXT:
case IrCmd::CHECK_NODE_VALUE:
case IrCmd::BARRIER_TABLE_BACK:
case IrCmd::RETURN:
case IrCmd::COVERAGE:
@ -999,7 +1068,10 @@ static void constPropInInst(ConstPropState& state, IrBuilder& build, IrFunction&
if (RegisterInfo* info = state.tryGetRegisterInfo(inst.b); info && info->knownTableArraySize >= 0)
replace(function, inst.f, build.constUint(info->knownTableArraySize));
state.valueMap.clear(); // TODO: this can be relaxed when x64 emitInstSetList becomes aware of register allocator
// TODO: this can be relaxed when x64 emitInstSetList becomes aware of register allocator
state.valueMap.clear();
state.getSlotNodeCache.clear();
state.checkSlotMatchCache.clear();
break;
case IrCmd::CALL:
state.invalidateRegistersFrom(vmRegOp(inst.a));
@ -1012,7 +1084,11 @@ static void constPropInInst(ConstPropState& state, IrBuilder& build, IrFunction&
break;
case IrCmd::FORGLOOP:
state.invalidateRegistersFrom(vmRegOp(inst.a) + 2); // Rn and Rn+1 are not modified
state.valueMap.clear(); // TODO: this can be relaxed when x64 emitInstForGLoop becomes aware of register allocator
// TODO: this can be relaxed when x64 emitInstForGLoop becomes aware of register allocator
state.valueMap.clear();
state.getSlotNodeCache.clear();
state.checkSlotMatchCache.clear();
break;
case IrCmd::FORGLOOP_FALLBACK:
state.invalidateRegistersFrom(vmRegOp(inst.a) + 2); // Rn and Rn+1 are not modified
@ -1076,8 +1152,15 @@ static void constPropInBlock(IrBuilder& build, IrBlock& block, ConstPropState& s
constPropInInst(state, build, function, block, inst, index);
}
// Value numbering and load/store propagation is not performed between blocks
state.valueMap.clear();
if (!FFlag::LuauKeepVmapLinear)
{
// Value numbering and load/store propagation is not performed between blocks
state.valueMap.clear();
// Same for table slot data propagation
state.getSlotNodeCache.clear();
state.checkSlotMatchCache.clear();
}
}
static void constPropInBlockChain(IrBuilder& build, std::vector<uint8_t>& visited, IrBlock* block, ConstPropState& state)
@ -1086,6 +1169,9 @@ static void constPropInBlockChain(IrBuilder& build, std::vector<uint8_t>& visite
state.clear();
const uint32_t startSortkey = block->sortkey;
uint32_t chainPos = 0;
while (block)
{
uint32_t blockIdx = function.getBlockIndex(*block);
@ -1094,19 +1180,40 @@ static void constPropInBlockChain(IrBuilder& build, std::vector<uint8_t>& visite
constPropInBlock(build, *block, state);
if (FFlag::LuauKeepVmapLinear)
{
// Value numbering and load/store propagation is not performed between blocks right now
// This is because cross-block value uses limit creation of linear block (restriction in collectDirectBlockJumpPath)
state.valueMap.clear();
// Same for table slot data propagation
state.getSlotNodeCache.clear();
state.checkSlotMatchCache.clear();
}
// Blocks in a chain are guaranteed to follow each other
// We force that by giving all blocks the same sorting key, but consecutive chain keys
block->sortkey = startSortkey;
block->chainkey = chainPos++;
IrInst& termInst = function.instructions[block->finish];
IrBlock* nextBlock = nullptr;
// Unconditional jump into a block with a single user (current block) allows us to continue optimization
// with the information we have gathered so far (unless we have already visited that block earlier)
if (termInst.cmd == IrCmd::JUMP && termInst.a.kind != IrOpKind::VmExit)
if (termInst.cmd == IrCmd::JUMP && termInst.a.kind == IrOpKind::Block)
{
IrBlock& target = function.blockOp(termInst.a);
uint32_t targetIdx = function.getBlockIndex(target);
if (target.useCount == 1 && !visited[targetIdx] && target.kind != IrBlockKind::Fallback)
{
// Make sure block ordering guarantee is checked at lowering time
block->expectedNextBlock = function.getBlockIndex(target);
nextBlock = &target;
}
}
block = nextBlock;
@ -1134,7 +1241,7 @@ static std::vector<uint32_t> collectDirectBlockJumpPath(IrFunction& function, st
IrBlock* nextBlock = nullptr;
// A chain is made from internal blocks that were not a part of bytecode CFG
if (termInst.cmd == IrCmd::JUMP && termInst.a.kind != IrOpKind::VmExit)
if (termInst.cmd == IrCmd::JUMP && termInst.a.kind == IrOpKind::Block)
{
IrBlock& target = function.blockOp(termInst.a);
uint32_t targetIdx = function.getBlockIndex(target);
@ -1175,8 +1282,8 @@ static void tryCreateLinearBlock(IrBuilder& build, std::vector<uint8_t>& visited
if (termInst.cmd != IrCmd::JUMP)
return;
// And it can't be jump to a VM exit
if (termInst.a.kind == IrOpKind::VmExit)
// And it can't be jump to a VM exit or undef
if (termInst.a.kind != IrOpKind::Block)
return;
// And it has to jump to a block with more than one user
@ -1196,14 +1303,14 @@ static void tryCreateLinearBlock(IrBuilder& build, std::vector<uint8_t>& visited
// Initialize state with the knowledge of our current block
state.clear();
// TODO: using values from the first block can cause 'live out' of the linear block predecessor to not have all required registers
constPropInBlock(build, startingBlock, state);
// Verify that target hasn't changed
LUAU_ASSERT(function.instructions[startingBlock.finish].a.index == targetBlockIdx);
// Note: using startingBlock after this line is unsafe as the reference may be reallocated by build.block() below
uint32_t startingInsn = startingBlock.start;
const uint32_t startingSortKey = startingBlock.sortkey;
const uint32_t startingChainKey = startingBlock.chainkey;
// Create new linearized block into which we are going to redirect starting block jump
IrOp newBlock = build.block(IrBlockKind::Linearized);
@ -1213,7 +1320,11 @@ static void tryCreateLinearBlock(IrBuilder& build, std::vector<uint8_t>& visited
// By default, blocks are ordered according to start instruction; we alter sort order to make sure linearized block is placed right after the
// starting block
function.blocks[newBlock.index].sortkey = startingInsn + 1;
function.blocks[newBlock.index].sortkey = startingSortKey;
function.blocks[newBlock.index].chainkey = startingChainKey + 1;
// Make sure block ordering guarantee is checked at lowering time
function.blocks[blockIdx].expectedNextBlock = newBlock.index;
replace(function, termInst.a, newBlock);
@ -1252,6 +1363,12 @@ static void tryCreateLinearBlock(IrBuilder& build, std::vector<uint8_t>& visited
def.varargStart = pathDef.varargStart;
}
}
// Update predecessors
function.cfg.predecessorsOffsets.push_back(uint32_t(function.cfg.predecessors.size()));
function.cfg.predecessors.push_back(blockIdx);
// Updating successors will require visiting the instructions again and we don't have a current use for linearized block successor list
}
// Optimize our linear block

1
CodeGen/src/OptimizeFinalX64.cpp
View file

@ -58,6 +58,7 @@ static void optimizeMemoryOperandsX64(IrFunction& function, IrBlock& block)
case IrCmd::SUB_NUM:
case IrCmd::MUL_NUM:
case IrCmd::DIV_NUM:
case IrCmd::IDIV_NUM:
case IrCmd::MOD_NUM:
case IrCmd::MIN_NUM:
case IrCmd::MAX_NUM:

14
Common/include/Luau/Bytecode.h
View file

@ -44,7 +44,7 @@
// Version 1: Baseline version for the open-source release. Supported until 0.521.
// Version 2: Adds Proto::linedefined. Supported until 0.544.
// Version 3: Adds FORGPREP/JUMPXEQK* and enhances AUX encoding for FORGLOOP. Removes FORGLOOP_NEXT/INEXT and JUMPIFEQK/JUMPIFNOTEQK. Currently supported.
// Version 4: Adds Proto::flags and typeinfo. Currently supported.
// Version 4: Adds Proto::flags, typeinfo, and floor division opcodes IDIV/IDIVK. Currently supported.
// Bytecode opcode, part of the instruction header
enum LuauOpcode
@ -390,6 +390,18 @@ enum LuauOpcode
LOP_JUMPXEQKN,
LOP_JUMPXEQKS,
// IDIV: compute floor division between two source registers and put the result into target register
// A: target register
// B: source register 1
// C: source register 2
LOP_IDIV,
// IDIVK compute floor division between the source register and a constant and put the result into target register
// A: target register
// B: source register
// C: constant table index (0..255)
LOP_IDIVK,
// Enum entry for number of opcodes, not a valid opcode by itself!
LOP__COUNT
};

1
Compiler/include/Luau/BytecodeBuilder.h
View file

@ -15,7 +15,6 @@ class BytecodeEncoder
public:
virtual ~BytecodeEncoder() {}
virtual uint8_t encodeOp(uint8_t op) = 0;
virtual void encode(uint32_t* data, size_t count) = 0;
};

50
Compiler/src/BytecodeBuilder.cpp
View file

@ -8,7 +8,8 @@
#include <string.h>
LUAU_FASTFLAGVARIABLE(BytecodeVersion4, false)
LUAU_FASTFLAGVARIABLE(BytecodeEnc, false)
LUAU_FASTFLAG(LuauFloorDivision)
namespace Luau
{
@ -238,7 +239,7 @@ void BytecodeBuilder::endFunction(uint8_t maxstacksize, uint8_t numupvalues, uin
// very approximate: 4 bytes per instruction for code, 1 byte for debug line, and 1-2 bytes for aux data like constants plus overhead
func.data.reserve(32 + insns.size() * 7);
if (FFlag::BytecodeEnc && encoder)
if (encoder)
encoder->encode(insns.data(), insns.size());
writeFunction(func.data, currentFunction, flags);
@ -625,29 +626,8 @@ void BytecodeBuilder::writeFunction(std::string& ss, uint32_t id, uint8_t flags)
// instructions
writeVarInt(ss, uint32_t(insns.size()));
if (encoder && !FFlag::BytecodeEnc)
{
for (size_t i = 0; i < insns.size();)
{
uint8_t op = LUAU_INSN_OP(insns[i]);
LUAU_ASSERT(op < LOP__COUNT);
int oplen = getOpLength(LuauOpcode(op));
uint8_t openc = encoder->encodeOp(op);
writeInt(ss, openc | (insns[i] & ~0xff));
for (int j = 1; j < oplen; ++j)
writeInt(ss, insns[i + j]);
i += oplen;
}
}
else
{
for (uint32_t insn : insns)
writeInt(ss, insn);
}
for (uint32_t insn : insns)
writeInt(ss, insn);
// constants
writeVarInt(ss, uint32_t(constants.size()));
@ -1306,8 +1286,11 @@ void BytecodeBuilder::validateInstructions() const
case LOP_SUB:
case LOP_MUL:
case LOP_DIV:
case LOP_IDIV:
case LOP_MOD:
case LOP_POW:
LUAU_ASSERT(FFlag::LuauFloorDivision || op != LOP_IDIV);
VREG(LUAU_INSN_A(insn));
VREG(LUAU_INSN_B(insn));
VREG(LUAU_INSN_C(insn));
@ -1317,8 +1300,11 @@ void BytecodeBuilder::validateInstructions() const
case LOP_SUBK:
case LOP_MULK:
case LOP_DIVK:
case LOP_IDIVK:
case LOP_MODK:
case LOP_POWK:
LUAU_ASSERT(FFlag::LuauFloorDivision || op != LOP_IDIVK);
VREG(LUAU_INSN_A(insn));
VREG(LUAU_INSN_B(insn));
VCONST(LUAU_INSN_C(insn), Number);
@ -1885,6 +1871,12 @@ void BytecodeBuilder::dumpInstruction(const uint32_t* code, std::string& result,
formatAppend(result, "DIV R%d R%d R%d\n", LUAU_INSN_A(insn), LUAU_INSN_B(insn), LUAU_INSN_C(insn));
break;
case LOP_IDIV:
LUAU_ASSERT(FFlag::LuauFloorDivision);
formatAppend(result, "IDIV R%d R%d R%d\n", LUAU_INSN_A(insn), LUAU_INSN_B(insn), LUAU_INSN_C(insn));
break;
case LOP_MOD:
formatAppend(result, "MOD R%d R%d R%d\n", LUAU_INSN_A(insn), LUAU_INSN_B(insn), LUAU_INSN_C(insn));
break;
@ -1917,6 +1909,14 @@ void BytecodeBuilder::dumpInstruction(const uint32_t* code, std::string& result,
result.append("]\n");
break;
case LOP_IDIVK:
LUAU_ASSERT(FFlag::LuauFloorDivision);
formatAppend(result, "IDIVK R%d R%d K%d [", LUAU_INSN_A(insn), LUAU_INSN_B(insn), LUAU_INSN_C(insn));
dumpConstant(result, LUAU_INSN_C(insn));
result.append("]\n");
break;
case LOP_MODK:
formatAppend(result, "MODK R%d R%d K%d [", LUAU_INSN_A(insn), LUAU_INSN_B(insn), LUAU_INSN_C(insn));
dumpConstant(result, LUAU_INSN_C(insn));

13
Compiler/src/Compiler.cpp
View file

@ -26,6 +26,8 @@ LUAU_FASTINTVARIABLE(LuauCompileInlineThreshold, 25)
LUAU_FASTINTVARIABLE(LuauCompileInlineThresholdMaxBoost, 300)
LUAU_FASTINTVARIABLE(LuauCompileInlineDepth, 5)
LUAU_FASTFLAG(LuauFloorDivision)
namespace Luau
{
@ -1019,6 +1021,11 @@ struct Compiler
case AstExprBinary::Div:
return k ? LOP_DIVK : LOP_DIV;
case AstExprBinary::FloorDiv:
LUAU_ASSERT(FFlag::LuauFloorDivision);
return k ? LOP_IDIVK : LOP_IDIV;
case AstExprBinary::Mod:
return k ? LOP_MODK : LOP_MOD;
@ -1469,9 +1476,12 @@ struct Compiler
case AstExprBinary::Sub:
case AstExprBinary::Mul:
case AstExprBinary::Div:
case AstExprBinary::FloorDiv:
case AstExprBinary::Mod:
case AstExprBinary::Pow:
{
LUAU_ASSERT(FFlag::LuauFloorDivision || expr->op != AstExprBinary::FloorDiv);
int32_t rc = getConstantNumber(expr->right);
if (rc >= 0 && rc <= 255)
@ -3192,9 +3202,12 @@ struct Compiler
case AstExprBinary::Sub:
case AstExprBinary::Mul:
case AstExprBinary::Div:
case AstExprBinary::FloorDiv:
case AstExprBinary::Mod:
case AstExprBinary::Pow:
{
LUAU_ASSERT(FFlag::LuauFloorDivision || stat->op != AstExprBinary::FloorDiv);
if (var.kind != LValue::Kind_Local)
compileLValueUse(var, target, /* set= */ false);

8
Compiler/src/ConstantFolding.cpp
View file

@ -104,6 +104,14 @@ static void foldBinary(Constant& result, AstExprBinary::Op op, const Constant& l
}
break;
case AstExprBinary::FloorDiv:
if (la.type == Constant::Type_Number && ra.type == Constant::Type_Number)
{
result.type = Constant::Type_Number;
result.valueNumber = floor(la.valueNumber / ra.valueNumber);
}
break;
case AstExprBinary::Mod:
if (la.type == Constant::Type_Number && ra.type == Constant::Type_Number)
{

20
Config/src/Config.cpp
View file

@ -4,6 +4,7 @@
#include "Luau/Lexer.h"
#include "Luau/StringUtils.h"
LUAU_FASTFLAG(LuauFloorDivision)
namespace Luau
{
@ -112,14 +113,23 @@ static void next(Lexer& lexer)
lexer.next();
// skip C-style comments as Lexer only understands Lua-style comments atm
while (lexer.current().type == '/')
if (FFlag::LuauFloorDivision)
{
Lexeme peek = lexer.lookahead();
while (lexer.current().type == Luau::Lexeme::FloorDiv)
lexer.nextline();
}
else
{
while (lexer.current().type == '/')
{
Lexeme peek = lexer.lookahead();
if (peek.type != '/' || peek.location.begin != lexer.current().location.end)
break;
if (peek.type != '/' || peek.location.begin != lexer.current().location.end)
break;
lexer.nextline();
lexer.nextline();
}
}
}

2
LICENSE.txt
View file

@ -1,6 +1,6 @@
MIT License
Copyright (c) 2019-2022 Roblox Corporation
Copyright (c) 2019-2023 Roblox Corporation
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in

1
Makefile
View file

@ -255,6 +255,7 @@ $(BUILD)/fuzz/protoprint.cpp.o: fuzz/luau.pb.cpp
build/libprotobuf-mutator:
git clone https://github.com/google/libprotobuf-mutator build/libprotobuf-mutator
git -C build/libprotobuf-mutator checkout 212a7be1eb08e7f9c79732d2aab9b2097085d936
CXX= cmake -S build/libprotobuf-mutator -B build/libprotobuf-mutator $(DPROTOBUF)
make -C build/libprotobuf-mutator -j8

2
VM/include/lua.h
View file

@ -443,7 +443,7 @@ typedef struct lua_Callbacks lua_Callbacks;
LUA_API lua_Callbacks* lua_callbacks(lua_State* L);
/******************************************************************************
* Copyright (c) 2019-2022 Roblox Corporation
* Copyright (c) 2019-2023 Roblox Corporation
* Copyright (C) 1994-2008 Lua.org, PUC-Rio. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining

2
VM/src/lapi.cpp
View file

@ -38,7 +38,7 @@ const char* lua_ident = "$Lua: Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Ri
"$Authors: R. Ierusalimschy, L. H. de Figueiredo & W. Celes $\n"
"$URL: www.lua.org $\n";
const char* luau_ident = "$Luau: Copyright (C) 2019-2022 Roblox Corporation $\n"
const char* luau_ident = "$Luau: Copyright (C) 2019-2023 Roblox Corporation $\n"
"$URL: luau-lang.org $\n";
#define api_checknelems(L, n) api_check(L, (n) <= (L->top - L->base))

7
VM/src/lnumutils.h
View file

@ -40,6 +40,13 @@ inline double luai_nummod(double a, double b)
}
LUAU_FASTMATH_END
LUAU_FASTMATH_BEGIN
inline double luai_numidiv(double a, double b)
{
return floor(a / b);
}
LUAU_FASTMATH_END
#define luai_num2int(i, d) ((i) = (int)(d))
// On MSVC in 32-bit, double to unsigned cast compiles into a call to __dtoui3, so we invoke x87->int64 conversion path manually

1
VM/src/ltm.cpp
View file

@ -48,6 +48,7 @@ const char* const luaT_eventname[] = {
"__sub",
"__mul",
"__div",
"__idiv",
"__mod",
"__pow",
"__unm",

1
VM/src/ltm.h
View file

@ -27,6 +27,7 @@ typedef enum
TM_SUB,
TM_MUL,
TM_DIV,
TM_IDIV,
TM_MOD,
TM_POW,
TM_UNM,

98
VM/src/lvmexecute.cpp
View file

@ -103,7 +103,8 @@
VM_DISPATCH_OP(LOP_LOADKX), VM_DISPATCH_OP(LOP_JUMPX), VM_DISPATCH_OP(LOP_FASTCALL), VM_DISPATCH_OP(LOP_COVERAGE), \
VM_DISPATCH_OP(LOP_CAPTURE), VM_DISPATCH_OP(LOP_DEP_JUMPIFEQK), VM_DISPATCH_OP(LOP_DEP_JUMPIFNOTEQK), VM_DISPATCH_OP(LOP_FASTCALL1), \
VM_DISPATCH_OP(LOP_FASTCALL2), VM_DISPATCH_OP(LOP_FASTCALL2K), VM_DISPATCH_OP(LOP_FORGPREP), VM_DISPATCH_OP(LOP_JUMPXEQKNIL), \
VM_DISPATCH_OP(LOP_JUMPXEQKB), VM_DISPATCH_OP(LOP_JUMPXEQKN), VM_DISPATCH_OP(LOP_JUMPXEQKS),
VM_DISPATCH_OP(LOP_JUMPXEQKB), VM_DISPATCH_OP(LOP_JUMPXEQKN), VM_DISPATCH_OP(LOP_JUMPXEQKS), VM_DISPATCH_OP(LOP_IDIV), \
VM_DISPATCH_OP(LOP_IDIVK),
#if defined(__GNUC__) || defined(__clang__)
#define VM_USE_CGOTO 1
@ -1660,6 +1661,54 @@ reentry:
}
}
VM_CASE(LOP_IDIV)
{
Instruction insn = *pc++;
StkId ra = VM_REG(LUAU_INSN_A(insn));
StkId rb = VM_REG(LUAU_INSN_B(insn));
StkId rc = VM_REG(LUAU_INSN_C(insn));
// fast-path
if (LUAU_LIKELY(ttisnumber(rb) && ttisnumber(rc)))
{
setnvalue(ra, luai_numidiv(nvalue(rb), nvalue(rc)));
VM_NEXT();
}
else if (ttisvector(rb) && ttisnumber(rc))
{
const float* vb = vvalue(rb);
float vc = cast_to(float, nvalue(rc));
setvvalue(ra, float(luai_numidiv(vb[0], vc)), float(luai_numidiv(vb[1], vc)), float(luai_numidiv(vb[2], vc)),
float(luai_numidiv(vb[3], vc)));
VM_NEXT();
}
else
{
// fast-path for userdata with C functions
StkId rbc = ttisnumber(rb) ? rc : rb;
const TValue* fn = 0;
if (ttisuserdata(rbc) && (fn = luaT_gettmbyobj(L, rbc, TM_IDIV)) && ttisfunction(fn) && clvalue(fn)->isC)
{
// note: it's safe to push arguments past top for complicated reasons (see top of the file)
LUAU_ASSERT(L->top + 3 < L->stack + L->stacksize);
StkId top = L->top;
setobj2s(L, top + 0, fn);
setobj2s(L, top + 1, rb);
setobj2s(L, top + 2, rc);
L->top = top + 3;
VM_PROTECT(luaV_callTM(L, 2, LUAU_INSN_A(insn)));
VM_NEXT();
}
else
{
// slow-path, may invoke C/Lua via metamethods
VM_PROTECT(luaV_doarith(L, ra, rb, rc, TM_IDIV));
VM_NEXT();
}
}
}
VM_CASE(LOP_MOD)
{
Instruction insn = *pc++;
@ -1838,6 +1887,53 @@ reentry:
}
}
VM_CASE(LOP_IDIVK)
{
Instruction insn = *pc++;
StkId ra = VM_REG(LUAU_INSN_A(insn));
StkId rb = VM_REG(LUAU_INSN_B(insn));
TValue* kv = VM_KV(LUAU_INSN_C(insn));
// fast-path
if (LUAU_LIKELY(ttisnumber(rb)))
{
setnvalue(ra, luai_numidiv(nvalue(rb), nvalue(kv)));
VM_NEXT();
}
else if (ttisvector(rb))
{
const float* vb = vvalue(rb);
float vc = cast_to(float, nvalue(kv));
setvvalue(ra, float(luai_numidiv(vb[0], vc)), float(luai_numidiv(vb[1], vc)), float(luai_numidiv(vb[2], vc)),
float(luai_numidiv(vb[3], vc)));
VM_NEXT();
}
else
{
// fast-path for userdata with C functions
const TValue* fn = 0;
if (ttisuserdata(rb) && (fn = luaT_gettmbyobj(L, rb, TM_IDIV)) && ttisfunction(fn) && clvalue(fn)->isC)
{
// note: it's safe to push arguments past top for complicated reasons (see top of the file)
LUAU_ASSERT(L->top + 3 < L->stack + L->stacksize);
StkId top = L->top;
setobj2s(L, top + 0, fn);
setobj2s(L, top + 1, rb);
setobj2s(L, top + 2, kv);
L->top = top + 3;
VM_PROTECT(luaV_callTM(L, 2, LUAU_INSN_A(insn)));
VM_NEXT();
}
else
{
// slow-path, may invoke C/Lua via metamethods
VM_PROTECT(luaV_doarith(L, ra, rb, kv, TM_IDIV));
VM_NEXT();
}
}
}
VM_CASE(LOP_MODK)
{
Instruction insn = *pc++;

22
VM/src/lvmutils.cpp
View file

@ -394,6 +394,9 @@ void luaV_doarith(lua_State* L, StkId ra, const TValue* rb, const TValue* rc, TM
case TM_DIV:
setnvalue(ra, luai_numdiv(nb, nc));
break;
case TM_IDIV:
setnvalue(ra, luai_numidiv(nb, nc));
break;
case TM_MOD:
setnvalue(ra, luai_nummod(nb, nc));
break;
@ -410,7 +413,12 @@ void luaV_doarith(lua_State* L, StkId ra, const TValue* rb, const TValue* rc, TM
}
else
{
// vector operations that we support: v + v, v - v, v * v, s * v, v * s, v / v, s / v, v / s, -v
// vector operations that we support:
// v+v v-v -v (add/sub/neg)
// v*v s*v v*s (mul)
// v/v s/v v/s (div)
// v//v s//v v//s (floor div)
const float* vb = luaV_tovector(rb);
const float* vc = luaV_tovector(rc);
@ -430,6 +438,10 @@ void luaV_doarith(lua_State* L, StkId ra, const TValue* rb, const TValue* rc, TM
case TM_DIV:
setvvalue(ra, vb[0] / vc[0], vb[1] / vc[1], vb[2] / vc[2], vb[3] / vc[3]);
return;
case TM_IDIV:
setvvalue(ra, float(luai_numidiv(vb[0], vc[0])), float(luai_numidiv(vb[1], vc[1])), float(luai_numidiv(vb[2], vc[2])),
float(luai_numidiv(vb[3], vc[3])));
return;
case TM_UNM:
setvvalue(ra, -vb[0], -vb[1], -vb[2], -vb[3]);
return;
@ -453,6 +465,10 @@ void luaV_doarith(lua_State* L, StkId ra, const TValue* rb, const TValue* rc, TM
case TM_DIV:
setvvalue(ra, vb[0] / nc, vb[1] / nc, vb[2] / nc, vb[3] / nc);
return;
case TM_IDIV:
setvvalue(ra, float(luai_numidiv(vb[0], nc)), float(luai_numidiv(vb[1], nc)), float(luai_numidiv(vb[2], nc)),
float(luai_numidiv(vb[3], nc)));
return;
default:
break;
}
@ -474,6 +490,10 @@ void luaV_doarith(lua_State* L, StkId ra, const TValue* rb, const TValue* rc, TM
case TM_DIV:
setvvalue(ra, nb / vc[0], nb / vc[1], nb / vc[2], nb / vc[3]);
return;
case TM_IDIV:
setvvalue(ra, float(luai_numidiv(nb, vc[0])), float(luai_numidiv(nb, vc[1])), float(luai_numidiv(nb, vc[2])),
float(luai_numidiv(nb, vc[3])));
return;
default:
break;
}

22
bench/micro_tests/test_TableSort.lua Normal file
View file

@ -0,0 +1,22 @@
local bench = script and require(script.Parent.bench_support) or require("bench_support")
local arr_months = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}
local arr_num = {}
for i=1,100 do table.insert(arr_num, math.sin(i)) end
local arr_numk = {}
for i=1,10000 do table.insert(arr_numk, math.sin(i)) end
function test(arr)
local t = table.create(#arr)
for i=1,1e6/#arr do
table.move(arr, 1, #arr, 1, t)
table.sort(t)
end
end
bench.runCode(function() test(arr_months) end, "table.sort: 12 strings")
bench.runCode(function() test(arr_num) end, "table.sort: 100 numbers")
bench.runCode(function() test(arr_numk) end, "table.sort: 10k numbers")

2
bench/tabulate.py
View file

@ -45,7 +45,7 @@ class TablePrinter(object):
def _print_horizontal_separator(self):
for i, align_width in enumerate(self._widths):
if i > 0:
print('-+-', end='')
print('-|-', end='')
print('-' * (align_width+1), end='')
print()
pass

23
fuzz/luau.proto
View file

@ -135,17 +135,18 @@ message ExprBinary {
Sub = 1;
Mul = 2;
Div = 3;
Mod = 4;
Pow = 5;
Concat = 6;
CompareNe = 7;
CompareEq = 8;
CompareLt = 9;
CompareLe = 10;
CompareGt = 11;
CompareGe = 12;
And = 13;
Or = 14;
FloorDiv = 4;
Mod = 5;
Pow = 6;
Concat = 7;
CompareNe = 8;
CompareEq = 9;
CompareLt = 10;
CompareLe = 11;
CompareGt = 12;
CompareGe = 13;
And = 14;
Or = 15;
}
required Op op = 1;

2
fuzz/protoprint.cpp
View file

@ -495,6 +495,8 @@ struct ProtoToLuau
source += " * ";
else if (expr.op() == luau::ExprBinary::Div)
source += " / ";
else if (expr.op() == luau::ExprBinary::FloorDiv)
source += " // ";
else if (expr.op() == luau::ExprBinary::Mod)
source += " % ";
else if (expr.op() == luau::ExprBinary::Pow)

10
tests/AssemblyBuilderA64.test.cpp
View file

@ -107,6 +107,13 @@ TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "Binary")
SINGLE_COMPARE(cmp(w0, 42), 0x7100A81F);
}
TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "BinaryExtended")
{
// reg, reg
SINGLE_COMPARE(add(x0, x1, w2, 3), 0x8B224C20);
SINGLE_COMPARE(sub(x0, x1, w2, 3), 0xCB224C20);
}
TEST_CASE_FIXTURE(AssemblyBuilderA64Fixture, "BinaryImm")
{
// instructions
@ -524,6 +531,8 @@ TEST_CASE("LogTest")
build.ldr(x0, mem(x1, 1, AddressKindA64::pre));
build.ldr(x0, mem(x1, 1, AddressKindA64::post));
build.add(x1, x2, w3, 3);
build.setLabel(l);
build.ret();
@ -560,6 +569,7 @@ TEST_CASE("LogTest")
ldr x0,[x1,#1]
ldr x0,[x1,#1]!
ldr x0,[x1]!,#1
add x1,x2,w3 UXTW #3
.L1:
ret
)";

27
tests/Autocomplete.test.cpp
View file

@ -986,6 +986,33 @@ TEST_CASE_FIXTURE(ACFixture, "autocomplete_end_with_lambda")
CHECK_EQ(ac.context, AutocompleteContext::Statement);
}
TEST_CASE_FIXTURE(ACFixture, "autocomplete_end_of_do_block")
{
ScopedFastFlag sff{"LuauAutocompleteDoEnd", true};
check("do @1");
auto ac = autocomplete('1');
CHECK(ac.entryMap.count("end"));
check(R"(
function f()
do
@1
end
@2
)");
ac = autocomplete('1');
CHECK(ac.entryMap.count("end"));
ac = autocomplete('2');
CHECK(ac.entryMap.count("end"));
}
TEST_CASE_FIXTURE(ACFixture, "stop_at_first_stat_when_recommending_keywords")
{
check(R"(

4
tests/CodeAllocator.test.cpp
View file

@ -412,6 +412,10 @@ static void obscureThrowCase(int64_t (*f)(int64_t, void (*)(int64_t)))
TEST_CASE("GeneratedCodeExecutionWithThrowX64Simd")
{
// This test requires AVX
if (!Luau::CodeGen::isSupported())
return;
using namespace X64;
AssemblyBuilderX64 build(/* logText= */ false);

21
tests/Conformance.test.cpp
View file

@ -24,6 +24,7 @@ extern bool codegen;
extern int optimizationLevel;
LUAU_FASTFLAG(LuauPCallDebuggerFix);
LUAU_FASTFLAG(LuauFloorDivision);
static lua_CompileOptions defaultOptions()
{
@ -280,6 +281,7 @@ TEST_CASE("Assert")
TEST_CASE("Basic")
{
ScopedFastFlag sffs{"LuauFloorDivision", true};
runConformance("basic.lua");
}
@ -363,6 +365,7 @@ TEST_CASE("Errors")
TEST_CASE("Events")
{
ScopedFastFlag sffs{"LuauFloorDivision", true};
runConformance("events.lua");
}
@ -444,6 +447,8 @@ TEST_CASE("Pack")
TEST_CASE("Vector")
{
ScopedFastFlag sffs{"LuauFloorDivision", true};
lua_CompileOptions copts = defaultOptions();
copts.vectorCtor = "vector";
@ -1616,6 +1621,9 @@ static void pushInt64(lua_State* L, int64_t value)
TEST_CASE("Userdata")
{
ScopedFastFlag sffs{"LuauFloorDivision", true};
runConformance("userdata.lua", [](lua_State* L) {
// create metatable with all the metamethods
lua_newtable(L);
@ -1735,6 +1743,19 @@ TEST_CASE("Userdata")
nullptr);
lua_setfield(L, -2, "__div");
// __idiv
lua_pushcfunction(
L,
[](lua_State* L) {
// for testing we use different semantics here compared to __div: __idiv rounds to negative inf, __div truncates (rounds to zero)
// additionally, division loses precision here outside of 2^53 range
// we do not necessarily recommend this behavior in production code!
pushInt64(L, int64_t(floor(double(getInt64(L, 1)) / double(getInt64(L, 2)))));
return 1;
},
nullptr);
lua_setfield(L, -2, "__idiv");
// __mod
lua_pushcfunction(
L,

130
tests/IrBuilder.test.cpp
View file

@ -5,6 +5,7 @@
#include "Luau/IrUtils.h"
#include "Luau/OptimizeConstProp.h"
#include "Luau/OptimizeFinalX64.h"
#include "ScopedFlags.h"
#include "doctest.h"
@ -1930,6 +1931,135 @@ bb_0:
)");
}
TEST_CASE_FIXTURE(IrBuilderFixture, "DuplicateHashSlotChecks")
{
ScopedFastFlag luauReuseHashSlots{"LuauReuseHashSlots2", true};
IrOp block = build.block(IrBlockKind::Internal);
IrOp fallback = build.block(IrBlockKind::Fallback);
build.beginBlock(block);
// This roughly corresponds to 'return t.a + t.a'
IrOp table1 = build.inst(IrCmd::LOAD_POINTER, build.vmReg(1));
IrOp slot1 = build.inst(IrCmd::GET_SLOT_NODE_ADDR, table1, build.constUint(3), build.vmConst(1));
build.inst(IrCmd::CHECK_SLOT_MATCH, slot1, build.vmConst(1), fallback);
IrOp value1 = build.inst(IrCmd::LOAD_TVALUE, slot1, build.constInt(0));
build.inst(IrCmd::STORE_TVALUE, build.vmReg(3), value1);
IrOp slot1b = build.inst(IrCmd::GET_SLOT_NODE_ADDR, table1, build.constUint(8), build.vmConst(1)); // This will be removed
build.inst(IrCmd::CHECK_SLOT_MATCH, slot1b, build.vmConst(1), fallback); // Key will be replaced with undef here
IrOp value1b = build.inst(IrCmd::LOAD_TVALUE, slot1b, build.constInt(0));
build.inst(IrCmd::STORE_TVALUE, build.vmReg(4), value1b);
IrOp a = build.inst(IrCmd::LOAD_DOUBLE, build.vmReg(3));
IrOp b = build.inst(IrCmd::LOAD_DOUBLE, build.vmReg(4));
IrOp sum = build.inst(IrCmd::ADD_NUM, a, b);
build.inst(IrCmd::STORE_DOUBLE, build.vmReg(2), sum);
build.inst(IrCmd::RETURN, build.vmReg(2), build.constUint(1));
build.beginBlock(fallback);
build.inst(IrCmd::RETURN, build.vmReg(0), build.constUint(1));
updateUseCounts(build.function);
constPropInBlockChains(build, true);
// In the future, we might even see duplicate identical TValue loads go away
// In the future, we might even see loads of different VM regs with the same value go away
CHECK("\n" + toString(build.function, /* includeUseInfo */ false) == R"(
bb_0:
%0 = LOAD_POINTER R1
%1 = GET_SLOT_NODE_ADDR %0, 3u, K1
CHECK_SLOT_MATCH %1, K1, bb_fallback_1
%3 = LOAD_TVALUE %1, 0i
STORE_TVALUE R3, %3
CHECK_NODE_VALUE %1, bb_fallback_1
%7 = LOAD_TVALUE %1, 0i
STORE_TVALUE R4, %7
%9 = LOAD_DOUBLE R3
%10 = LOAD_DOUBLE R4
%11 = ADD_NUM %9, %10
STORE_DOUBLE R2, %11
RETURN R2, 1u
bb_fallback_1:
RETURN R0, 1u
)");
}
TEST_CASE_FIXTURE(IrBuilderFixture, "DuplicateHashSlotChecksAvoidNil")
{
ScopedFastFlag luauReuseHashSlots{"LuauReuseHashSlots2", true};
IrOp block = build.block(IrBlockKind::Internal);
IrOp fallback = build.block(IrBlockKind::Fallback);
build.beginBlock(block);
IrOp table1 = build.inst(IrCmd::LOAD_POINTER, build.vmReg(1));
IrOp slot1 = build.inst(IrCmd::GET_SLOT_NODE_ADDR, table1, build.constUint(3), build.vmConst(1));
build.inst(IrCmd::CHECK_SLOT_MATCH, slot1, build.vmConst(1), fallback);
IrOp value1 = build.inst(IrCmd::LOAD_TVALUE, slot1, build.constInt(0));
build.inst(IrCmd::STORE_TVALUE, build.vmReg(3), value1);
IrOp table2 = build.inst(IrCmd::LOAD_POINTER, build.vmReg(2));
IrOp slot2 = build.inst(IrCmd::GET_SLOT_NODE_ADDR, table2, build.constUint(6), build.vmConst(1));
build.inst(IrCmd::CHECK_SLOT_MATCH, slot2, build.vmConst(1), fallback);
build.inst(IrCmd::CHECK_READONLY, table2, fallback);
build.inst(IrCmd::STORE_TAG, build.vmReg(4), build.constTag(tnil));
IrOp valueNil = build.inst(IrCmd::LOAD_TVALUE, build.vmReg(4));
build.inst(IrCmd::STORE_TVALUE, slot2, valueNil, build.constInt(0));
// In the future, we might get to track that value became 'nil' and that fallback will be taken
IrOp slot1b = build.inst(IrCmd::GET_SLOT_NODE_ADDR, table1, build.constUint(8), build.vmConst(1)); // This will be removed
build.inst(IrCmd::CHECK_SLOT_MATCH, slot1b, build.vmConst(1), fallback); // Key will be replaced with undef here
IrOp value1b = build.inst(IrCmd::LOAD_TVALUE, slot1b, build.constInt(0));
build.inst(IrCmd::STORE_TVALUE, build.vmReg(3), value1b);
IrOp slot2b = build.inst(IrCmd::GET_SLOT_NODE_ADDR, table2, build.constUint(11), build.vmConst(1)); // This will be removed
build.inst(IrCmd::CHECK_SLOT_MATCH, slot2b, build.vmConst(1), fallback); // Key will be replaced with undef here
build.inst(IrCmd::CHECK_READONLY, table2, fallback);
build.inst(IrCmd::STORE_SPLIT_TVALUE, slot2b, build.constTag(tnumber), build.constDouble(1), build.constInt(0));
build.inst(IrCmd::RETURN, build.vmReg(3), build.constUint(2));
build.beginBlock(fallback);
build.inst(IrCmd::RETURN, build.vmReg(1), build.constUint(2));
updateUseCounts(build.function);
constPropInBlockChains(build, true);
CHECK("\n" + toString(build.function, /* includeUseInfo */ false) == R"(
bb_0:
%0 = LOAD_POINTER R1
%1 = GET_SLOT_NODE_ADDR %0, 3u, K1
CHECK_SLOT_MATCH %1, K1, bb_fallback_1
%3 = LOAD_TVALUE %1, 0i
STORE_TVALUE R3, %3
%5 = LOAD_POINTER R2
%6 = GET_SLOT_NODE_ADDR %5, 6u, K1
CHECK_SLOT_MATCH %6, K1, bb_fallback_1
CHECK_READONLY %5, bb_fallback_1
STORE_TAG R4, tnil
%10 = LOAD_TVALUE R4
STORE_TVALUE %6, %10, 0i
CHECK_NODE_VALUE %1, bb_fallback_1
%14 = LOAD_TVALUE %1, 0i
STORE_TVALUE R3, %14
CHECK_NODE_VALUE %6, bb_fallback_1
STORE_SPLIT_TVALUE %6, tnumber, 1, 0i
RETURN R3, 2u
bb_fallback_1:
RETURN R1, 2u
)");
}
TEST_SUITE_END();
TEST_SUITE_BEGIN("Analysis");

6
tests/IrRegAllocX64.test.cpp
View file

@ -49,9 +49,9 @@ TEST_CASE_FIXTURE(IrRegAllocX64Fixture, "RelocateFix")
LUAU_ASSERT(function.instructions[1].spilled);
checkMatch(R"(
vmovsd qword ptr [rsp+070h],rax
vmovsd qword ptr [rsp+078h],rax
vmovsd rax,qword ptr [rsp+070h]
vmovsd qword ptr [rsp+048h],rax
vmovsd qword ptr [rsp+050h],rax
vmovsd rax,qword ptr [rsp+048h]
)");
}

36
tests/Parser.test.cpp
View file

@ -2970,4 +2970,40 @@ TEST_CASE_FIXTURE(Fixture, "unfinished_string_literal_types_get_reported_but_par
CHECK_EQ(result.root->body.size, 2);
}
TEST_CASE_FIXTURE(Fixture, "do_block_with_no_end")
{
ParseResult result = tryParse(R"(
do
)");
REQUIRE_EQ(1, result.errors.size());
AstStatBlock* stat0 = result.root->body.data[0]->as<AstStatBlock>();
REQUIRE(stat0);
CHECK(!stat0->hasEnd);
}
TEST_CASE_FIXTURE(Fixture, "parse_interpolated_string_with_lookahead_involved")
{
ScopedFastFlag sff{"LuauLexerLookaheadRemembersBraceType", true};
ParseResult result = tryParse(R"(
local x = `{ {y} }`
)");
REQUIRE_MESSAGE(result.errors.empty(), result.errors[0].getMessage());
}
TEST_CASE_FIXTURE(Fixture, "parse_interpolated_string_with_lookahead_involved2")
{
ScopedFastFlag sff{"LuauLexerLookaheadRemembersBraceType", true};
ParseResult result = tryParse(R"(
local x = `{ { y{} } }`
)");
REQUIRE_MESSAGE(result.errors.empty(), result.errors[0].getMessage());
}
TEST_SUITE_END();

246
tests/Subtyping.test.cpp
View file

@ -52,6 +52,35 @@ struct SubtypeFixture : Fixture
return arena.addType(TableType{std::move(props), std::nullopt, {}, TableState::Sealed});
}
// `&`
TypeId meet(TypeId a, TypeId b)
{
return arena.addType(IntersectionType{{a, b}});
}
// `|`
TypeId join(TypeId a, TypeId b)
{
return arena.addType(UnionType{{a, b}});
}
TypeId negate(TypeId ty)
{
return arena.addType(NegationType{ty});
}
TypeId cls(const std::string& name, std::optional<TypeId> parent = std::nullopt)
{
return arena.addType(ClassType{name, {}, parent.value_or(builtinTypes->classType), {}, {}, nullptr, ""});
}
TypeId cls(const std::string& name, ClassType::Props&& props)
{
TypeId ty = cls(name);
getMutable<ClassType>(ty)->props = std::move(props);
return ty;
}
TypeId cyclicTable(std::function<void(TypeId, TableType*)>&& cb)
{
TypeId res = arena.addType(GenericType{});
@ -61,6 +90,11 @@ struct SubtypeFixture : Fixture
return res;
}
TypeId meta(TableType::Props&& metaProps, TableType::Props&& tableProps = {})
{
return arena.addType(MetatableType{tbl(std::move(tableProps)), tbl(std::move(metaProps))});
}
TypeId genericT = arena.addType(GenericType{"T"});
TypeId genericU = arena.addType(GenericType{"U"});
@ -77,8 +111,34 @@ struct SubtypeFixture : Fixture
TypeId helloType2 = arena.addType(SingletonType{StringSingleton{"hello"}});
TypeId worldType = arena.addType(SingletonType{StringSingleton{"world"}});
TypeId helloOrWorldType = arena.addType(UnionType{{helloType, worldType}});
TypeId trueOrFalseType = arena.addType(UnionType{{builtinTypes->trueType, builtinTypes->falseType}});
TypeId helloOrWorldType = join(helloType, worldType);
TypeId trueOrFalseType = join(builtinTypes->trueType, builtinTypes->falseType);
TypeId helloAndWorldType = meet(helloType, worldType);
TypeId booleanAndTrueType = meet(builtinTypes->booleanType, builtinTypes->trueType);
/**
* class
* \- Root
* |- Child
* | |-GrandchildOne
* | \-GrandchildTwo
* \- AnotherChild
* |- AnotherGrandchildOne
* \- AnotherGrandchildTwo
*/
TypeId rootClass = cls("Root");
TypeId childClass = cls("Child", rootClass);
TypeId grandchildOneClass = cls("GrandchildOne", childClass);
TypeId grandchildTwoClass = cls("GrandchildTwo", childClass);
TypeId anotherChildClass = cls("AnotherChild", rootClass);
TypeId anotherGrandchildOneClass = cls("AnotherGrandchildOne", anotherChildClass);
TypeId anotherGrandchildTwoClass = cls("AnotherGrandchildTwo", anotherChildClass);
TypeId vec2Class = cls("Vec2", {
{"X", builtinTypes->numberType},
{"Y", builtinTypes->numberType},
});
// "hello" | "hello"
TypeId helloOrHelloType = arena.addType(UnionType{{helloType, helloType}});
@ -86,12 +146,6 @@ struct SubtypeFixture : Fixture
// () -> ()
const TypeId nothingToNothingType = fn({}, {});
// ("hello") -> "world"
TypeId helloAndWorldType = arena.addType(IntersectionType{{helloType, worldType}});
// (boolean) -> true
TypeId booleanAndTrueType = arena.addType(IntersectionType{{builtinTypes->booleanType, builtinTypes->trueType}});
// (number) -> string
const TypeId numberToStringType = fn(
{builtinTypes->numberType},
@ -247,6 +301,11 @@ struct SubtypeFixture : Fixture
builtinTypes->emptyTypePack,
genericAs
});
// { lower : string -> string }
TypeId tableWithLower = tbl(TableType::Props{{"lower", fn({builtinTypes->stringType}, {builtinTypes->stringType})}});
// { insaneThingNoScalarHas : () -> () }
TypeId tableWithoutScalarProp = tbl(TableType::Props{{"insaneThingNoScalarHas", fn({}, {})}});
};
#define CHECK_IS_SUBTYPE(left, right) \
@ -620,6 +679,99 @@ TEST_CASE_FIXTURE(SubtypeFixture, "{x: <T>(T) -> ()} <: {x: <U>(U) -> ()}")
);
}
TEST_CASE_FIXTURE(SubtypeFixture, "{ @metatable { x: number } } <: { @metatable {} }")
{
CHECK_IS_SUBTYPE(
meta({{"x", builtinTypes->numberType}}),
meta({})
);
}
TEST_CASE_FIXTURE(SubtypeFixture, "{ @metatable { x: number } } <!: { @metatable { x: boolean } }")
{
CHECK_IS_NOT_SUBTYPE(
meta({{"x", builtinTypes->numberType}}),
meta({{"x", builtinTypes->booleanType}})
);
}
TEST_CASE_FIXTURE(SubtypeFixture, "{ @metatable {} } <!: { @metatable { x: boolean } }")
{
CHECK_IS_NOT_SUBTYPE(
meta({}),
meta({{"x", builtinTypes->booleanType}})
);
}
TEST_CASE_FIXTURE(SubtypeFixture, "{ @metatable {} } <: {}")
{
CHECK_IS_SUBTYPE(
meta({}),
tbl({})
);
}
TEST_CASE_FIXTURE(SubtypeFixture, "{ @metatable { u: boolean }, x: number } <: { x: number }")
{
CHECK_IS_SUBTYPE(
meta({{"u", builtinTypes->booleanType}}, {{"x", builtinTypes->numberType}}),
tbl({{"x", builtinTypes->numberType}})
);
}
TEST_CASE_FIXTURE(SubtypeFixture, "{ @metatable { x: number } } <!: { x: number }")
{
CHECK_IS_NOT_SUBTYPE(
meta({{"x", builtinTypes->numberType}}),
tbl({{"x", builtinTypes->numberType}})
);
}
TEST_CASE_FIXTURE(SubtypeFixture, "Root <: class")
{
CHECK_IS_SUBTYPE(rootClass, builtinTypes->classType);
}
TEST_CASE_FIXTURE(SubtypeFixture, "Child | AnotherChild <: class")
{
CHECK_IS_SUBTYPE(join(childClass, anotherChildClass), builtinTypes->classType);
}
TEST_CASE_FIXTURE(SubtypeFixture, "Child | AnotherChild <: Child | AnotherChild")
{
CHECK_IS_SUBTYPE(join(childClass, anotherChildClass), join(childClass, anotherChildClass));
}
TEST_CASE_FIXTURE(SubtypeFixture, "Child | Root <: Root")
{
CHECK_IS_SUBTYPE(join(childClass, rootClass), rootClass);
}
TEST_CASE_FIXTURE(SubtypeFixture, "Child & AnotherChild <: class")
{
CHECK_IS_SUBTYPE(meet(childClass, anotherChildClass), builtinTypes->classType);
}
TEST_CASE_FIXTURE(SubtypeFixture, "Child & Root <: class")
{
CHECK_IS_SUBTYPE(meet(childClass, rootClass), builtinTypes->classType);
}
TEST_CASE_FIXTURE(SubtypeFixture, "Child & ~Root <: class")
{
CHECK_IS_SUBTYPE(meet(childClass, negate(rootClass)), builtinTypes->classType);
}
TEST_CASE_FIXTURE(SubtypeFixture, "Child & AnotherChild <: number")
{
CHECK_IS_SUBTYPE(meet(childClass, anotherChildClass), builtinTypes->numberType);
}
TEST_CASE_FIXTURE(SubtypeFixture, "Child & ~GrandchildOne <!: number")
{
CHECK_IS_NOT_SUBTYPE(meet(childClass, negate(grandchildOneClass)), builtinTypes->numberType);
}
TEST_CASE_FIXTURE(SubtypeFixture, "t1 where t1 = {trim: (t1) -> string} <: t2 where t2 = {trim: (t2) -> string}")
{
TypeId t1 = cyclicTable([&](TypeId ty, TableType* tt)
@ -665,6 +817,84 @@ TEST_CASE_FIXTURE(SubtypeFixture, "t1 where t1 = {trim: (t1) -> t1} <!: t2 where
CHECK_IS_NOT_SUBTYPE(t1, t2);
}
TEST_CASE_FIXTURE(SubtypeFixture, "Vec2 <: { X: number, Y: number }")
{
TypeId xy = tbl({
{"X", builtinTypes->numberType},
{"Y", builtinTypes->numberType},
});
CHECK_IS_SUBTYPE(vec2Class, xy);
}
TEST_CASE_FIXTURE(SubtypeFixture, "Vec2 <: { X: number }")
{
TypeId x = tbl({
{"X", builtinTypes->numberType},
});
CHECK_IS_SUBTYPE(vec2Class, x);
}
TEST_CASE_FIXTURE(SubtypeFixture, "{ X: number, Y: number } <!: Vec2")
{
TypeId xy = tbl({
{"X", builtinTypes->numberType},
{"Y", builtinTypes->numberType},
});
CHECK_IS_NOT_SUBTYPE(xy, vec2Class);
}
TEST_CASE_FIXTURE(SubtypeFixture, "{ X: number } <!: Vec2")
{
TypeId x = tbl({
{"X", builtinTypes->numberType},
});
CHECK_IS_NOT_SUBTYPE(x, vec2Class);
}
TEST_CASE_FIXTURE(SubtypeFixture, "table & { X: number, Y: number } <!: Vec2")
{
TypeId x = tbl({
{"X", builtinTypes->numberType},
{"Y", builtinTypes->numberType},
});
CHECK_IS_NOT_SUBTYPE(meet(builtinTypes->tableType, x), vec2Class);
}
TEST_CASE_FIXTURE(SubtypeFixture, "Vec2 <!: table & { X: number, Y: number }")
{
TypeId xy = tbl({
{"X", builtinTypes->numberType},
{"Y", builtinTypes->numberType},
});
CHECK_IS_NOT_SUBTYPE(vec2Class, meet(builtinTypes->tableType, xy));
}
TEST_CASE_FIXTURE(SubtypeFixture, "\"hello\" <: { lower : (string) -> string }")
{
CHECK_IS_SUBTYPE(helloType, tableWithLower);
}
TEST_CASE_FIXTURE(SubtypeFixture, "\"hello\" <!: { insaneThingNoScalarHas : () -> () }")
{
CHECK_IS_NOT_SUBTYPE(helloType, tableWithoutScalarProp);
}
TEST_CASE_FIXTURE(SubtypeFixture, "string <: { lower : (string) -> string }")
{
CHECK_IS_SUBTYPE(builtinTypes->stringType, tableWithLower);
}
TEST_CASE_FIXTURE(SubtypeFixture, "string <!: { insaneThingNoScalarHas : () -> () }")
{
CHECK_IS_NOT_SUBTYPE(builtinTypes->stringType, tableWithoutScalarProp);
}
/*
* <A>(A) -> A <: <X>(X) -> X
* A can be bound to X.

8
tests/ToString.test.cpp
View file

@ -833,14 +833,6 @@ TEST_CASE_FIXTURE(Fixture, "tostring_unsee_ttv_if_array")
TEST_CASE_FIXTURE(Fixture, "tostring_error_mismatch")
{
ScopedFastFlag sff[] = {
{"LuauIndentTypeMismatch", true},
};
ScopedFastInt sfi[] = {
{"LuauIndentTypeMismatchMaxTypeLength", 10},
};
CheckResult result = check(R"(
--!strict
function f1() : {a : number, b : string, c : { d : number}}

5
tests/Transpiler.test.cpp
View file

@ -529,14 +529,17 @@ until c
CHECK_EQ(code, transpile(code, {}, true).code);
}
TEST_CASE_FIXTURE(Fixture, "transpile_compound_assignmenr")
TEST_CASE_FIXTURE(Fixture, "transpile_compound_assignment")
{
ScopedFastFlag sffs{"LuauFloorDivision", true};
std::string code = R"(
local a = 1
a += 2
a -= 3
a *= 4
a /= 5
a //= 5
a %= 6
a ^= 7
a ..= ' - result'

5
tests/TypeInfer.aliases.test.cpp
View file

@ -189,9 +189,7 @@ TEST_CASE_FIXTURE(Fixture, "generic_aliases")
{
ScopedFastFlag sff[] = {
{"DebugLuauDeferredConstraintResolution", true},
{"LuauIndentTypeMismatch", true},
};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type T<a> = { v: a }
local x: T<number> = { v = 123 }
@ -212,10 +210,7 @@ TEST_CASE_FIXTURE(Fixture, "dependent_generic_aliases")
{
ScopedFastFlag sff[] = {
{"DebugLuauDeferredConstraintResolution", true},
{"LuauIndentTypeMismatch", true},
};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type T<a> = { v: a }

2
tests/TypeInfer.builtins.test.cpp
View file

@ -134,9 +134,7 @@ TEST_CASE_FIXTURE(BuiltinsFixture, "sort_with_bad_predicate")
{
ScopedFastFlag sff[] = {
{"LuauAlwaysCommitInferencesOfFunctionCalls", true},
{"LuauIndentTypeMismatch", true},
};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
--!strict

4
tests/TypeInfer.classes.test.cpp
View file

@ -369,9 +369,7 @@ TEST_CASE_FIXTURE(ClassFixture, "detailed_class_unification_error")
{
ScopedFastFlag sff[] = {
{"LuauAlwaysCommitInferencesOfFunctionCalls", true},
{"LuauIndentTypeMismatch", true},
};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local function foo(v)
return v.X :: number + string.len(v.Y)
@ -457,8 +455,6 @@ TEST_CASE_FIXTURE(ClassFixture, "index_instance_property_nonstrict")
TEST_CASE_FIXTURE(ClassFixture, "type_mismatch_invariance_required_for_error")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type A = { x: ChildClass }
type B = { x: BaseClass }

28
tests/TypeInfer.functions.test.cpp
View file

@ -1095,9 +1095,6 @@ TEST_CASE_FIXTURE(Fixture, "return_type_by_overload")
TEST_CASE_FIXTURE(BuiltinsFixture, "infer_anonymous_function_arguments")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
// Simple direct arg to arg propagation
CheckResult result = check(R"(
type Table = { x: number, y: number }
@ -1342,8 +1339,6 @@ end
TEST_CASE_FIXTURE(Fixture, "error_detailed_function_mismatch_arg_count")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type A = (number, number) -> string
type B = (number) -> string
@ -1364,9 +1359,6 @@ caused by:
TEST_CASE_FIXTURE(Fixture, "error_detailed_function_mismatch_arg")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type A = (number, number) -> string
type B = (number, string) -> string
@ -1388,9 +1380,6 @@ Type 'string' could not be converted into 'number')";
TEST_CASE_FIXTURE(Fixture, "error_detailed_function_mismatch_ret_count")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type A = (number, number) -> (number)
type B = (number, number) -> (number, boolean)
@ -1411,9 +1400,6 @@ caused by:
TEST_CASE_FIXTURE(Fixture, "error_detailed_function_mismatch_ret")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type A = (number, number) -> string
type B = (number, number) -> number
@ -1435,9 +1421,6 @@ Type 'string' could not be converted into 'number')";
TEST_CASE_FIXTURE(Fixture, "error_detailed_function_mismatch_ret_mult")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type A = (number, number) -> (number, string)
type B = (number, number) -> (number, boolean)
@ -1563,9 +1546,6 @@ TEST_CASE_FIXTURE(Fixture, "inferred_higher_order_functions_are_quantified_at_th
TEST_CASE_FIXTURE(BuiltinsFixture, "function_decl_non_self_unsealed_overwrite")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local t = { f = nil :: ((x: number) -> number)? }
@ -1608,9 +1588,6 @@ TEST_CASE_FIXTURE(Fixture, "strict_mode_ok_with_missing_arguments")
TEST_CASE_FIXTURE(Fixture, "function_statement_sealed_table_assignment_through_indexer")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local t: {[string]: () -> number} = {}
@ -1819,9 +1796,6 @@ foo(string.find("hello", "e"))
TEST_CASE_FIXTURE(Fixture, "luau_subtyping_is_np_hard")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
--!strict
@ -2017,10 +1991,8 @@ TEST_CASE_FIXTURE(Fixture, "function_exprs_are_generalized_at_signature_scope_no
TEST_CASE_FIXTURE(BuiltinsFixture, "param_1_and_2_both_takes_the_same_generic_but_their_arguments_are_incompatible")
{
ScopedFastFlag sff[] = {
{"LuauIndentTypeMismatch", true},
{"LuauAlwaysCommitInferencesOfFunctionCalls", true},
};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local function foo<a>(x: a, y: a?)

3
tests/TypeInfer.generics.test.cpp
View file

@ -713,9 +713,6 @@ end
TEST_CASE_FIXTURE(Fixture, "generic_functions_should_be_memory_safe")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
--!strict
-- At one point this produced a UAF

53
tests/TypeInfer.intersectionTypes.test.cpp
View file

@ -317,9 +317,6 @@ TEST_CASE_FIXTURE(Fixture, "table_intersection_write_sealed")
TEST_CASE_FIXTURE(Fixture, "table_intersection_write_sealed_indirect")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type X = { x: (number) -> number }
type Y = { y: (string) -> string }
@ -350,9 +347,6 @@ caused by:
TEST_CASE_FIXTURE(Fixture, "table_write_sealed_indirect")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
// After normalization, previous 'table_intersection_write_sealed_indirect' is identical to this one
CheckResult result = check(R"(
type XY = { x: (number) -> number, y: (string) -> string }
@ -392,9 +386,6 @@ TEST_CASE_FIXTURE(BuiltinsFixture, "table_intersection_setmetatable")
TEST_CASE_FIXTURE(Fixture, "error_detailed_intersection_part")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type X = { x: number }
type Y = { y: number }
@ -482,9 +473,6 @@ TEST_CASE_FIXTURE(Fixture, "intersect_false_and_bool_and_false")
TEST_CASE_FIXTURE(Fixture, "intersect_saturate_overloaded_functions")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local x : ((number?) -> number?) & ((string?) -> string?)
local y : (nil) -> nil = x -- OK
@ -501,8 +489,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "union_saturate_overloaded_functions")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local x : ((number) -> number) & ((string) -> string)
@ -520,9 +506,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "intersection_of_tables")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local x : { p : number?, q : string? } & { p : number?, q : number?, r : number? }
local y : { p : number?, q : nil, r : number? } = x -- OK
@ -539,9 +522,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "intersection_of_tables_with_top_properties")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local x : { p : number?, q : any } & { p : unknown, q : string? }
local y : { p : number?, q : string? } = x -- OK
@ -594,9 +574,6 @@ TEST_CASE_FIXTURE(Fixture, "intersection_of_tables_with_never_properties")
TEST_CASE_FIXTURE(Fixture, "overloaded_functions_returning_intersections")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local x : ((number?) -> ({ p : number } & { q : number })) & ((string?) -> ({ p : number } & { r : number }))
local y : (nil) -> { p : number, q : number, r : number} = x -- OK
@ -613,9 +590,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "overloaded_functions_mentioning_generic")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
function f<a>()
local x : ((number?) -> (a | number)) & ((string?) -> (a | string))
@ -634,9 +608,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "overloaded_functions_mentioning_generics")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
function f<a,b,c>()
local x : ((a?) -> (a | b)) & ((c?) -> (b | c))
@ -655,9 +626,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "overloaded_functions_mentioning_generic_packs")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
function f<a...,b...>()
local x : ((number?, a...) -> (number?, b...)) & ((string?, a...) -> (string?, b...))
@ -676,9 +644,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "overloadeded_functions_with_unknown_result")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
function f<a...,b...>()
local x : ((number) -> number) & ((nil) -> unknown)
@ -697,9 +662,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "overloadeded_functions_with_unknown_arguments")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
function f<a...,b...>()
local x : ((number) -> number?) & ((unknown) -> string?)
@ -718,9 +680,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "overloadeded_functions_with_never_result")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
function f<a...,b...>()
local x : ((number) -> number) & ((nil) -> never)
@ -739,9 +698,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "overloadeded_functions_with_never_arguments")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
function f<a...,b...>()
local x : ((number) -> number?) & ((never) -> string?)
@ -760,9 +716,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "overloadeded_functions_with_overlapping_results_and_variadics")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local x : ((string?) -> (string | number)) & ((number?) -> ...number)
local y : ((nil) -> (number, number?)) = x -- OK
@ -809,9 +762,6 @@ TEST_CASE_FIXTURE(Fixture, "overloadeded_functions_with_weird_typepacks_2")
TEST_CASE_FIXTURE(Fixture, "overloadeded_functions_with_weird_typepacks_3")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
function f<a...>()
local x : (() -> a...) & (() -> (number?,a...))
@ -830,9 +780,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "overloadeded_functions_with_weird_typepacks_4")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
function f<a...>()
local x : ((a...) -> ()) & ((number,a...) -> number)

6
tests/TypeInfer.modules.test.cpp
View file

@ -389,9 +389,6 @@ type Table = typeof(tbl)
TEST_CASE_FIXTURE(BuiltinsFixture, "module_type_conflict")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
fileResolver.source["game/A"] = R"(
export type T = { x: number }
return {}
@ -420,9 +417,6 @@ Type 'number' could not be converted into 'string' in an invariant context)";
TEST_CASE_FIXTURE(BuiltinsFixture, "module_type_conflict_instantiated")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
fileResolver.source["game/A"] = R"(
export type Wrap<T> = { x: T }
return {}

20
tests/TypeInfer.operators.test.cpp
View file

@ -12,6 +12,8 @@
#include "doctest.h"
#include "ScopedFlags.h"
using namespace Luau;
LUAU_FASTFLAG(DebugLuauDeferredConstraintResolution)
@ -143,6 +145,24 @@ TEST_CASE_FIXTURE(Fixture, "some_primitive_binary_ops")
CHECK_EQ("number", toString(requireType("c")));
}
TEST_CASE_FIXTURE(Fixture, "floor_division_binary_op")
{
ScopedFastFlag sffs{"LuauFloorDivision", true};
CheckResult result = check(R"(
local a = 4 // 8
local b = -4 // 9
local c = 9
c //= -6.5
)");
LUAU_REQUIRE_NO_ERRORS(result);
CHECK_EQ("number", toString(requireType("a")));
CHECK_EQ("number", toString(requireType("b")));
CHECK_EQ("number", toString(requireType("c")));
}
TEST_CASE_FIXTURE(BuiltinsFixture, "typecheck_overloaded_multiply_that_is_an_intersection")
{
CheckResult result = check(R"(

41
tests/TypeInfer.provisional.test.cpp
View file

@ -787,9 +787,6 @@ TEST_CASE_FIXTURE(IsSubtypeFixture, "functions_with_mismatching_arity_but_any_is
TEST_CASE_FIXTURE(Fixture, "assign_table_with_refined_property_with_a_similar_type_is_illegal")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local t: {x: number?} = {x = nil}
@ -1050,4 +1047,42 @@ tbl:f3()
}
}
// Ideally, unification with any will not cause a 2^n normalization of a function overload
TEST_CASE_FIXTURE(BuiltinsFixture, "normalization_limit_in_unify_with_any")
{
ScopedFastFlag sff[] = {
{"LuauTransitiveSubtyping", true},
{"DebugLuauDeferredConstraintResolution", true},
};
// With default limit, this test will take 10 seconds in NoOpt
ScopedFastInt luauNormalizeCacheLimit{"LuauNormalizeCacheLimit", 1000};
// Build a function type with a large overload set
const int parts = 100;
std::string source;
for (int i = 0; i < parts; i++)
formatAppend(source, "type T%d = { f%d: number }\n", i, i);
source += "type Instance = { new: (('s0', extra: Instance?) -> T0)";
for (int i = 1; i < parts; i++)
formatAppend(source, " & (('s%d', extra: Instance?) -> T%d)", i, i);
source += " }\n";
source += R"(
local Instance: Instance = {} :: any
local function foo(a: typeof(Instance.new)) return if a then 2 else 3 end
foo(1 :: any)
)";
CheckResult result = check(source);
LUAU_REQUIRE_ERRORS(result);
}
TEST_SUITE_END();

8
tests/TypeInfer.singletons.test.cpp
View file

@ -316,9 +316,6 @@ TEST_CASE_FIXTURE(Fixture, "table_properties_type_error_escapes")
TEST_CASE_FIXTURE(Fixture, "error_detailed_tagged_union_mismatch_string")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type Cat = { tag: 'cat', catfood: string }
type Dog = { tag: 'dog', dogfood: string }
@ -337,9 +334,6 @@ Table type 'a' not compatible with type 'Cat' because the former is missing fiel
TEST_CASE_FIXTURE(Fixture, "error_detailed_tagged_union_mismatch_bool")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type Good = { success: true, result: string }
type Bad = { success: false, error: string }
@ -360,9 +354,7 @@ TEST_CASE_FIXTURE(Fixture, "parametric_tagged_union_alias")
{
ScopedFastFlag sff[] = {
{"DebugLuauDeferredConstraintResolution", true},
{"LuauIndentTypeMismatch", true},
};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type Ok<T> = {success: true, result: T}
type Err<T> = {success: false, error: T}

19
tests/TypeInfer.tables.test.cpp
View file

@ -2083,8 +2083,6 @@ TEST_CASE_FIXTURE(BuiltinsFixture, "table_insert_should_cope_with_optional_prope
TEST_CASE_FIXTURE(Fixture, "error_detailed_prop")
{
ScopedFastFlag sff[] = {{"LuauIndentTypeMismatch", true}};
ScopedFastInt sfi[] = {{"LuauIndentTypeMismatchMaxTypeLength", 10}};
CheckResult result = check(R"(
type A = { x: number, y: number }
type B = { x: number, y: string }
@ -2103,8 +2101,6 @@ Type 'number' could not be converted into 'string' in an invariant context)";
TEST_CASE_FIXTURE(Fixture, "error_detailed_prop_nested")
{
ScopedFastFlag sff[] = {{"LuauIndentTypeMismatch", true}};
ScopedFastInt sfi[] = {{"LuauIndentTypeMismatchMaxTypeLength", 10}};
CheckResult result = check(R"(
type AS = { x: number, y: number }
type BS = { x: number, y: string }
@ -2129,9 +2125,6 @@ Type 'number' could not be converted into 'string' in an invariant context)";
TEST_CASE_FIXTURE(BuiltinsFixture, "error_detailed_metatable_prop")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local a1 = setmetatable({ x = 2, y = 3 }, { __call = function(s) end });
local b1 = setmetatable({ x = 2, y = "hello" }, { __call = function(s) end });
@ -2202,8 +2195,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "error_detailed_indexer_key")
{
ScopedFastFlag sff[] = {{"LuauIndentTypeMismatch", true}};
ScopedFastInt sfi[] = {{"LuauIndentTypeMismatchMaxTypeLength", 10}};
CheckResult result = check(R"(
type A = { [number]: string }
type B = { [string]: string }
@ -2222,8 +2213,6 @@ Type 'number' could not be converted into 'string' in an invariant context)";
TEST_CASE_FIXTURE(Fixture, "error_detailed_indexer_value")
{
ScopedFastFlag sff[] = {{"LuauIndentTypeMismatch", true}};
ScopedFastInt sfi[] = {{"LuauIndentTypeMismatchMaxTypeLength", 10}};
CheckResult result = check(R"(
type A = { [number]: number }
type B = { [number]: string }
@ -2257,8 +2246,6 @@ a.p = { x = 9 }
TEST_CASE_FIXTURE(Fixture, "explicitly_typed_table_error")
{
ScopedFastFlag sff[] = {{"LuauIndentTypeMismatch", true}};
ScopedFastInt sfi[] = {{"LuauIndentTypeMismatchMaxTypeLength", 10}};
CheckResult result = check(R"(
--!strict
type Super = { x : number }
@ -3359,14 +3346,10 @@ TEST_CASE_FIXTURE(Fixture, "scalar_is_a_subtype_of_a_compatible_polymorphic_shap
TEST_CASE_FIXTURE(Fixture, "scalar_is_not_a_subtype_of_a_compatible_polymorphic_shape_type")
{
ScopedFastInt sfi[] = {{"LuauIndentTypeMismatchMaxTypeLength", 10}};
ScopedFastFlag sff[] = {
{"LuauAlwaysCommitInferencesOfFunctionCalls", true},
{"LuauIndentTypeMismatch", true},
};
CheckResult result = check(R"(
local function f(s)
return s:absolutely_no_scalar_has_this_method()
@ -3422,8 +3405,6 @@ TEST_CASE_FIXTURE(Fixture, "a_free_shape_can_turn_into_a_scalar_if_it_is_compati
TEST_CASE_FIXTURE(Fixture, "a_free_shape_cannot_turn_into_a_scalar_if_it_is_not_compatible")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local function f(s): string

3
tests/TypeInfer.test.cpp
View file

@ -992,9 +992,6 @@ end
TEST_CASE_FIXTURE(Fixture, "cli_50041_committing_txnlog_in_apollo_client_error")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
--!strict
--!nolint

2
tests/TypeInfer.tryUnify.test.cpp
View file

@ -345,9 +345,7 @@ TEST_CASE_FIXTURE(TryUnifyFixture, "metatables_unify_against_shape_of_free_table
{
ScopedFastFlag sff[] = {
{"LuauTransitiveSubtyping", true},
{"LuauIndentTypeMismatch", true},
};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
TableType::Props freeProps{
{"foo", {builtinTypes->numberType}},

3
tests/TypeInfer.typePacks.cpp
View file

@ -872,9 +872,6 @@ type R = { m: F<R> }
TEST_CASE_FIXTURE(Fixture, "pack_tail_unification_check")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local a: () -> (number, ...string)
local b: () -> (number, ...boolean)

18
tests/TypeInfer.unionTypes.test.cpp
View file

@ -459,8 +459,6 @@ local oh : boolean = t.y
TEST_CASE_FIXTURE(Fixture, "error_detailed_union_part")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type X = { x: number }
type Y = { y: number }
@ -498,8 +496,6 @@ local a: XYZ = { w = 4 }
TEST_CASE_FIXTURE(Fixture, "error_detailed_optional")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type X = { x: number }
@ -532,8 +528,6 @@ TEST_CASE_FIXTURE(Fixture, "dont_allow_cyclic_unions_to_be_inferred")
TEST_CASE_FIXTURE(BuiltinsFixture, "table_union_write_indirect")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
type A = { x: number, y: (number) -> string } | { z: number, y: (number) -> string }
@ -620,8 +614,6 @@ TEST_CASE_FIXTURE(Fixture, "union_of_functions_mentioning_generics")
TEST_CASE_FIXTURE(Fixture, "union_of_functions_mentioning_generic_typepacks")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
function f<a...>()
local x : (number, a...) -> (number?, a...)
@ -640,8 +632,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "union_of_functions_with_mismatching_arg_arities")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local x : (number) -> number?
local y : ((number?) -> number) | ((number | string) -> nil) = x -- OK
@ -658,8 +648,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "union_of_functions_with_mismatching_result_arities")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local x : () -> (number | string)
@ -677,8 +665,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "union_of_functions_with_variadics")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local x : (...nil) -> (...number?)
@ -696,8 +682,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "union_of_functions_with_mismatching_arg_variadics")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local x : (number) -> ()
@ -715,8 +699,6 @@ could not be converted into
TEST_CASE_FIXTURE(Fixture, "union_of_functions_with_mismatching_result_variadics")
{
ScopedFastFlag sff{"LuauIndentTypeMismatch", true};
ScopedFastInt sfi{"LuauIndentTypeMismatchMaxTypeLength", 10};
CheckResult result = check(R"(
local x : () -> (number?, ...number)

13
tests/conformance/basic.lua
View file

@ -91,6 +91,15 @@ assert((function() local a = 1 a = a + 2 return a end)() == 3)
assert((function() local a = 1 a = a - 2 return a end)() == -1)
assert((function() local a = 1 a = a * 2 return a end)() == 2)
assert((function() local a = 1 a = a / 2 return a end)() == 0.5)
-- floor division should always round towards -Infinity
assert((function() local a = 1 a = a // 2 return a end)() == 0)
assert((function() local a = 3 a = a // 2 return a end)() == 1)
assert((function() local a = 3.5 a = a // 2 return a end)() == 1)
assert((function() local a = -1 a = a // 2 return a end)() == -1)
assert((function() local a = -3 a = a // 2 return a end)() == -2)
assert((function() local a = -3.5 a = a // 2 return a end)() == -2)
assert((function() local a = 5 a = a % 2 return a end)() == 1)
assert((function() local a = 3 a = a ^ 2 return a end)() == 9)
assert((function() local a = 3 a = a ^ 3 return a end)() == 27)
@ -494,6 +503,7 @@ local function vec3t(x, y, z)
__sub = function(l, r) return vec3t(l.x - r.x, l.y - r.y, l.z - r.z) end,
__mul = function(l, r) return type(r) == "number" and vec3t(l.x * r, l.y * r, l.z * r) or vec3t(l.x * r.x, l.y * r.y, l.z * r.z) end,
__div = function(l, r) return type(r) == "number" and vec3t(l.x / r, l.y / r, l.z / r) or vec3t(l.x / r.x, l.y / r.y, l.z / r.z) end,
__idiv = function(l, r) return type(r) == "number" and vec3t(l.x // r, l.y // r, l.z // r) or vec3t(l.x // r.x, l.y // r.y, l.z // r.z) end,
__unm = function(v) return vec3t(-v.x, -v.y, -v.z) end,
__tostring = function(v) return string.format("%g, %g, %g", v.x, v.y, v.z) end
})
@ -504,10 +514,13 @@ assert((function() return tostring(vec3t(1,2,3) + vec3t(4,5,6)) end)() == "5, 7,
assert((function() return tostring(vec3t(1,2,3) - vec3t(4,5,6)) end)() == "-3, -3, -3")
assert((function() return tostring(vec3t(1,2,3) * vec3t(4,5,6)) end)() == "4, 10, 18")
assert((function() return tostring(vec3t(1,2,3) / vec3t(2,4,8)) end)() == "0.5, 0.5, 0.375")
assert((function() return tostring(vec3t(1,2,3) // vec3t(2,4,2)) end)() == "0, 0, 1")
assert((function() return tostring(vec3t(1,2,3) // vec3t(-2,-4,-2)) end)() == "-1, -1, -2")
-- reg vs constant
assert((function() return tostring(vec3t(1,2,3) * 2) end)() == "2, 4, 6")
assert((function() return tostring(vec3t(1,2,3) / 2) end)() == "0.5, 1, 1.5")
assert((function() return tostring(vec3t(1,2,3) // 2) end)() == "0, 1, 1")
-- unary
assert((function() return tostring(-vec3t(1,2,3)) end)() == "-1, -2, -3")

3
tests/conformance/events.lua
View file

@ -107,6 +107,7 @@ t.__add = f("add")
t.__sub = f("sub")
t.__mul = f("mul")
t.__div = f("div")
t.__idiv = f("idiv")
t.__mod = f("mod")
t.__unm = f("unm")
t.__pow = f("pow")
@ -128,6 +129,8 @@ assert(a*a == a)
assert(cap[0] == "mul" and cap[1] == a and cap[2] == a and cap[3]==nil)
assert(a/0 == a)
assert(cap[0] == "div" and cap[1] == a and cap[2] == 0 and cap[3]==nil)
assert(a//0 == a)
assert(cap[0] == "idiv" and cap[1] == a and cap[2] == 0 and cap[3]==nil)
assert(a%2 == a)
assert(cap[0] == "mod" and cap[1] == a and cap[2] == 2 and cap[3]==nil)
assert(-a == a)

1
tests/conformance/math.lua
View file

@ -82,6 +82,7 @@ assert(not(1>1) and not(1>2) and (2>1))
assert(not('a'>'a') and not('a'>'b') and ('b'>'a'))
assert((1>=1) and not(1>=2) and (2>=1))
assert(('a'>='a') and not('a'>='b') and ('b'>='a'))
assert((unk and unk > 0) == nil) -- validate precedence between and and >
-- testing mod operator
assert(-4%3 == 2)

41
tests/conformance/native.lua
View file

@ -130,4 +130,45 @@ end
assert(pcall(fuzzfail13) == true)
local function arraySizeInv1()
local t = {1, 2, nil, nil, nil, nil, nil, nil, nil, true}
table.insert(t, 3)
return t[10]
end
assert(arraySizeInv1() == true)
local function arraySizeInv2()
local t = {1, 2, nil, nil, nil, nil, nil, nil, nil, true}
local u = {a = t}
table.insert(u.a, 3) -- aliased modifiction of 't' register through other value
return t[10]
end
assert(arraySizeInv2() == true)
local function nilInvalidatesSlot()
local function tabs()
local t = { x=1, y=2, z=3 }
setmetatable(t, { __index = function(t, k) return 42 end })
return t, t
end
local t1, t2 = tabs()
for i=1,2 do
local a = t1.x
t2.x = nil
local b = t1.x
t2.x = 1
assert(a == 1 and b == 42)
end
end
nilInvalidatesSlot()
return('OK')

6
tests/conformance/userdata.lua
View file

@ -30,6 +30,12 @@ assert(int64(4) / 2 == int64(2))
assert(int64(4) % 3 == int64(1))
assert(int64(2) ^ 3 == int64(8))
-- / and // round in different directions in our test implementation
assert(int64(5) / int64(2) == int64(2))
assert(int64(5) // int64(2) == int64(2))
assert(int64(-5) / int64(2) == int64(-2))
assert(int64(-5) // int64(2) == int64(-3))
-- tostring
assert(tostring(int64(2)) == "2")

12
tests/conformance/vector.lua
View file

@ -67,6 +67,18 @@ assert(vector(1, 2, 4) / '8' == vector(1/8, 1/4, 1/2));
assert(-vector(1, 2, 4) == vector(-1, -2, -4));
-- test floor division
assert(vector(1, 3, 5) // 2 == vector(0, 1, 2))
assert(vector(1, 3, 5) // val == vector(8, 24, 40))
if vector_size == 4 then
assert(10 // vector(1, 2, 3, 4) == vector(10, 5, 3, 2))
assert(vector(10, 9, 8, 7) // vector(1, 2, 3, 4) == vector(10, 4, 2, 1))
else
assert(10 // vector(1, 2, 3) == vector(10, 5, 3))
assert(vector(10, 9, 8) // vector(1, 2, 3) == vector(10, 4, 2))
end
-- test NaN comparison
local nanv = vector(0/0, 0/0, 0/0)
assert(nanv ~= nanv);