src/librustc_middle/arena.rs

   1 /// This declares a list of types which can be allocated by `Arena`.
   2 ///
   3 /// The `few` modifier will cause allocation to use the shared arena and recording the destructor.
   4 /// This is faster and more memory efficient if there's only a few allocations of the type.
   5 /// Leaving `few` out will cause the type to get its own dedicated `TypedArena` which is
   6 /// faster and more memory efficient if there is lots of allocations.
   7 ///
   8 /// Specifying the `decode` modifier will add decode impls for `&T` and `&[T]` where `T` is the type
   9 /// listed. These impls will appear in the implement_ty_decoder! macro.
  10 #[macro_export]
  11 macro_rules! arena_types {
  12     ($macro:path, $args:tt, $tcx:lifetime) => (
  13         $macro!($args, [
  14             [] layouts: rustc_target::abi::Layout,
  15             // AdtDef are interned and compared by address
  16             [] adt_def: rustc_middle::ty::AdtDef,
  17             [decode] tables: rustc_middle::ty::TypeckTables<$tcx>,
  18             [] const_allocs: rustc_middle::mir::interpret::Allocation,
  19             // Required for the incremental on-disk cache
  20             [few, decode] mir_keys: rustc_hir::def_id::DefIdSet,
  21             [] region_scope_tree: rustc_middle::middle::region::ScopeTree,
  22             [] dropck_outlives:
  23                 rustc_middle::infer::canonical::Canonical<'tcx,
  24                     rustc_middle::infer::canonical::QueryResponse<'tcx,
  25                         rustc_middle::traits::query::DropckOutlivesResult<'tcx>
  26                     >
  27                 >,
  28             [] normalize_projection_ty:
  29                 rustc_middle::infer::canonical::Canonical<'tcx,
  30                     rustc_middle::infer::canonical::QueryResponse<'tcx,
  31                         rustc_middle::traits::query::NormalizationResult<'tcx>
  32                     >
  33                 >,
  34             [] implied_outlives_bounds:
  35                 rustc_middle::infer::canonical::Canonical<'tcx,
  36                     rustc_middle::infer::canonical::QueryResponse<'tcx,
  37                         Vec<rustc_middle::traits::query::OutlivesBound<'tcx>>
  38                     >
  39                 >,
  40             [] type_op_subtype:
  41                 rustc_middle::infer::canonical::Canonical<'tcx,
  42                     rustc_middle::infer::canonical::QueryResponse<'tcx, ()>
  43                 >,
  44             [] type_op_normalize_poly_fn_sig:
  45                 rustc_middle::infer::canonical::Canonical<'tcx,
  46                     rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::PolyFnSig<'tcx>>
  47                 >,
  48             [] type_op_normalize_fn_sig:
  49                 rustc_middle::infer::canonical::Canonical<'tcx,
  50                     rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::FnSig<'tcx>>
  51                 >,
  52             [] type_op_normalize_predicate:
  53                 rustc_middle::infer::canonical::Canonical<'tcx,
  54                     rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::Predicate<'tcx>>
  55                 >,
  56             [] type_op_normalize_ty:
  57                 rustc_middle::infer::canonical::Canonical<'tcx,
  58                     rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::Ty<'tcx>>
  59                 >,
  60             [few] all_traits: Vec<rustc_hir::def_id::DefId>,
  61             [few] privacy_access_levels: rustc_middle::middle::privacy::AccessLevels,
  62             [few] foreign_module: rustc_middle::middle::cstore::ForeignModule,
  63             [few] foreign_modules: Vec<rustc_middle::middle::cstore::ForeignModule>,
  64             [] upvars_mentioned: rustc_data_structures::fx::FxIndexMap<rustc_hir::HirId, rustc_hir::Upvar>,
  65             [] object_safety_violations: rustc_middle::traits::ObjectSafetyViolation,
  66             [] codegen_unit: rustc_middle::mir::mono::CodegenUnit<$tcx>,
  67             [] attribute: rustc_ast::ast::Attribute,
  68             [] name_set: rustc_data_structures::fx::FxHashSet<rustc_span::symbol::Symbol>,
  69             [] hir_id_set: rustc_hir::HirIdSet,
  70
  71             // Interned types
  72             [] tys: rustc_middle::ty::TyS<$tcx>,
  73
  74             // HIR query types
  75             [few] indexed_hir: rustc_middle::hir::map::IndexedHir<$tcx>,
  76             [few] hir_definitions: rustc_hir::definitions::Definitions,
  77             [] hir_owner: rustc_middle::hir::Owner<$tcx>,
  78             [] hir_owner_nodes: rustc_middle::hir::OwnerNodes<$tcx>,
  79
  80             // Note that this deliberately duplicates items in the `rustc_hir::arena`,
  81             // since we need to allocate this type on both the `rustc_hir` arena
  82             // (during lowering) and the `librustc_middle` arena (for decoding MIR)
  83             [decode] asm_template: rustc_ast::ast::InlineAsmTemplatePiece,
  84
  85         ], $tcx);
  86     )
  87 }
  88
  89 arena_types!(arena::declare_arena, [], 'tcx);