예제 #1
0
/// \brief True if the function should have its body serialized.
bool SILDeclRef::isFragile() const {
  DeclContext *dc;
  if (auto closure = getAbstractClosureExpr())
    dc = closure->getLocalContext();
  else {
    dc = getDecl()->getInnermostDeclContext();

    // Enum case constructors are serialized if the enum is @_versioned
    // or public.
    if (isEnumElement())
      if (cast<EnumDecl>(dc)->getEffectiveAccess() >= Accessibility::Public)
        return true;

    // The allocating entry point for designated initializers are serialized
    // if the class is @_versioned or public.
    if (kind == SILDeclRef::Kind::Allocator) {
      auto *ctor = cast<ConstructorDecl>(getDecl());
      if (ctor->isDesignatedInit() &&
          ctor->getDeclContext()->getAsClassOrClassExtensionContext()) {
        if (ctor->getEffectiveAccess() >= Accessibility::Public &&
            !ctor->hasClangNode())
          return true;
      }
    }
  }

  // Otherwise, ask the AST if we're inside an @_inlineable context.
  return (dc->getResilienceExpansion() == ResilienceExpansion::Minimal);
}
예제 #2
0
/// \brief True if the function should have its body serialized.
bool SILDeclRef::isFragile() const {
  DeclContext *dc;
  if (auto closure = getAbstractClosureExpr())
    dc = closure->getLocalContext();
  else
    dc = getDecl()->getInnermostDeclContext();

  // This is stupid
  return (dc->getResilienceExpansion() == ResilienceExpansion::Minimal);
}
예제 #3
0
파일: SILDeclRef.cpp 프로젝트: xwu/swift
/// \brief True if the function should have its body serialized.
IsSerialized_t SILDeclRef::isSerialized() const {
  DeclContext *dc;
  if (auto closure = getAbstractClosureExpr())
    dc = closure->getLocalContext();
  else {
    auto *d = getDecl();

    // Default argument generators are serialized if the function was
    // type-checked in Swift 4 mode.
    if (kind == SILDeclRef::Kind::DefaultArgGenerator) {
      auto *afd = cast<AbstractFunctionDecl>(d);
      switch (afd->getDefaultArgumentResilienceExpansion()) {
      case ResilienceExpansion::Minimal:
        return IsSerialized;
      case ResilienceExpansion::Maximal:
        return IsNotSerialized;
      }
    }

    // 'read' and 'modify' accessors synthesized on-demand are serialized if
    // visible outside the module.
    if (auto fn = dyn_cast<FuncDecl>(d))
      if (!isClangImported() &&
          fn->hasForcedStaticDispatch() &&
          fn->getEffectiveAccess() >= AccessLevel::Public)
        return IsSerialized;

    dc = getDecl()->getInnermostDeclContext();

    // Enum element constructors are serialized if the enum is
    // @usableFromInline or public.
    if (isEnumElement())
      if (d->getEffectiveAccess() >= AccessLevel::Public)
        return IsSerialized;

    // Currying thunks are serialized if referenced from an inlinable
    // context -- Sema's semantic checks ensure the serialization of
    // such a thunk is valid, since it must in turn reference a public
    // symbol, or dispatch via class_method or witness_method.
    if (isCurried)
      if (d->getEffectiveAccess() >= AccessLevel::Public)
        return IsSerializable;

    if (isForeignToNativeThunk())
      return IsSerializable;

    // The allocating entry point for designated initializers are serialized
    // if the class is @usableFromInline or public.
    if (kind == SILDeclRef::Kind::Allocator) {
      auto *ctor = cast<ConstructorDecl>(d);
      if (ctor->isDesignatedInit() &&
          ctor->getDeclContext()->getSelfClassDecl()) {
        if (ctor->getEffectiveAccess() >= AccessLevel::Public &&
            !ctor->hasClangNode())
          return IsSerialized;
      }
    }

    // Stored property initializers are inlinable if the type is explicitly
    // marked as @_fixed_layout.
    if (isStoredPropertyInitializer()) {
      auto *nominal = cast<NominalTypeDecl>(d->getDeclContext());
      auto scope =
        nominal->getFormalAccessScope(/*useDC=*/nullptr,
                                      /*treatUsableFromInlineAsPublic=*/true);
      if (!scope.isPublic())
        return IsNotSerialized;
      if (nominal->isFormallyResilient())
        return IsNotSerialized;
      return IsSerialized;
    }
  }

  // Declarations imported from Clang modules are serialized if
  // referenced from an inlinable context.
  if (isClangImported())
    return IsSerializable;

  // Otherwise, ask the AST if we're inside an @inlinable context.
  if (dc->getResilienceExpansion() == ResilienceExpansion::Minimal)
    return IsSerialized;

  return IsNotSerialized;
}
예제 #4
0
/// True if the function should have its body serialized.
IsSerialized_t SILDeclRef::isSerialized() const {
  DeclContext *dc;
  if (auto closure = getAbstractClosureExpr()) {
    dc = closure->getLocalContext();

    // Otherwise, ask the AST if we're inside an @inlinable context.
    if (dc->getResilienceExpansion() == ResilienceExpansion::Minimal) {
      if (isForeign)
        return IsSerializable;

      return IsSerialized;
    }

    return IsNotSerialized;
  }

  if (isIVarInitializerOrDestroyer())
    return IsNotSerialized;

  auto *d = getDecl();

  // Default argument generators are serialized if the containing
  // declaration is public.
  if (isDefaultArgGenerator()) {
    ResilienceExpansion expansion;
    if (auto *EED = dyn_cast<EnumElementDecl>(d)) {
      expansion = EED->getDefaultArgumentResilienceExpansion();
    } else {
      expansion = cast<AbstractFunctionDecl>(d)
                    ->getDefaultArgumentResilienceExpansion();
    }
    switch (expansion) {
    case ResilienceExpansion::Minimal:
      return IsSerialized;
    case ResilienceExpansion::Maximal:
      return IsNotSerialized;
    }
  }

  // Stored property initializers are inlinable if the type is explicitly
  // marked as @_fixed_layout.
  if (isStoredPropertyInitializer()) {
    auto *nominal = cast<NominalTypeDecl>(d->getDeclContext());
    auto scope =
      nominal->getFormalAccessScope(/*useDC=*/nullptr,
                                    /*treatUsableFromInlineAsPublic=*/true);
    if (!scope.isPublic())
      return IsNotSerialized;
    if (nominal->isFormallyResilient())
      return IsNotSerialized;
    return IsSerialized;
  }

  // Note: if 'd' is a function, then 'dc' is the function itself, not
  // its parent context.
  dc = d->getInnermostDeclContext();

  // Local functions are serializable if their parent function is
  // serializable.
  if (d->getDeclContext()->isLocalContext()) {
    if (dc->getResilienceExpansion() == ResilienceExpansion::Minimal)
      return IsSerializable;

    return IsNotSerialized;
  }

  // Anything else that is not public is not serializable.
  if (d->getEffectiveAccess() < AccessLevel::Public)
    return IsNotSerialized;

  // 'read' and 'modify' accessors synthesized on-demand are serialized if
  // visible outside the module.
  if (auto fn = dyn_cast<FuncDecl>(d))
    if (!isClangImported() &&
        fn->hasForcedStaticDispatch())
      return IsSerialized;

  // Enum element constructors are serializable if the enum is
  // @usableFromInline or public.
  if (isEnumElement())
    return IsSerializable;

  // Currying thunks are serialized if referenced from an inlinable
  // context -- Sema's semantic checks ensure the serialization of
  // such a thunk is valid, since it must in turn reference a public
  // symbol, or dispatch via class_method or witness_method.
  if (isCurried)
    return IsSerializable;

  if (isForeignToNativeThunk())
    return IsSerializable;

  // The allocating entry point for designated initializers are serialized
  // if the class is @usableFromInline or public.
  if (kind == SILDeclRef::Kind::Allocator) {
    auto *ctor = cast<ConstructorDecl>(d);
    if (ctor->isDesignatedInit() &&
        ctor->getDeclContext()->getSelfClassDecl()) {
      if (!ctor->hasClangNode())
        return IsSerialized;
    }
  }

  if (isForeign) {
    // @objc thunks for methods are not serializable since they're only
    // referenced from the method table.
    if (d->getDeclContext()->isTypeContext())
      return IsNotSerialized;

    // @objc thunks for top-level functions are serializable since they're
    // referenced from @convention(c) conversions inside inlinable
    // functions.
    return IsSerializable;
  }

  // Declarations imported from Clang modules are serialized if
  // referenced from an inlinable context.
  if (isClangImported())
    return IsSerializable;

  // Otherwise, ask the AST if we're inside an @inlinable context.
  if (dc->getResilienceExpansion() == ResilienceExpansion::Minimal)
    return IsSerialized;

  return IsNotSerialized;
}