compiler/rustc_middle/src/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, $tcx:lifetime) => (
  13         $macro!([
  14             [] layouts: rustc_target::abi::Layout,
  15             // AdtDef are interned and compared by address
  16             [] adt_def: rustc_middle::ty::AdtDef,
  17             [] steal_thir: rustc_data_structures::steal::Steal<rustc_middle::thir::Thir<$tcx>>,
  18             [] steal_mir: rustc_data_structures::steal::Steal<rustc_middle::mir::Body<$tcx>>,
  19             [decode] mir: rustc_middle::mir::Body<$tcx>,
  20             [] steal_promoted:
  21                 rustc_data_structures::steal::Steal<
  22                     rustc_index::vec::IndexVec<
  23                         rustc_middle::mir::Promoted,
  24                         rustc_middle::mir::Body<$tcx>
  25                     >
  26                 >,
  27             [decode] promoted:
  28                 rustc_index::vec::IndexVec<
  29                     rustc_middle::mir::Promoted,
  30                     rustc_middle::mir::Body<$tcx>
  31                 >,
  32             [decode] typeck_results: rustc_middle::ty::TypeckResults<$tcx>,
  33             [decode] borrowck_result:
  34                 rustc_middle::mir::BorrowCheckResult<$tcx>,
  35             [decode] unsafety_check_result: rustc_middle::mir::UnsafetyCheckResult,
  36             [decode] code_region: rustc_middle::mir::coverage::CodeRegion,
  37             [] const_allocs: rustc_middle::mir::interpret::Allocation,
  38             // Required for the incremental on-disk cache
  39             [few] mir_keys: rustc_hir::def_id::DefIdSet,
  40             [] region_scope_tree: rustc_middle::middle::region::ScopeTree,
  41             [] dropck_outlives:
  42                 rustc_middle::infer::canonical::Canonical<'tcx,
  43                     rustc_middle::infer::canonical::QueryResponse<'tcx,
  44                         rustc_middle::traits::query::DropckOutlivesResult<'tcx>
  45                     >
  46                 >,
  47             [] normalize_projection_ty:
  48                 rustc_middle::infer::canonical::Canonical<'tcx,
  49                     rustc_middle::infer::canonical::QueryResponse<'tcx,
  50                         rustc_middle::traits::query::NormalizationResult<'tcx>
  51                     >
  52                 >,
  53             [] implied_outlives_bounds:
  54                 rustc_middle::infer::canonical::Canonical<'tcx,
  55                     rustc_middle::infer::canonical::QueryResponse<'tcx,
  56                         Vec<rustc_middle::traits::query::OutlivesBound<'tcx>>
  57                     >
  58                 >,
  59             [] type_op_subtype:
  60                 rustc_middle::infer::canonical::Canonical<'tcx,
  61                     rustc_middle::infer::canonical::QueryResponse<'tcx, ()>
  62                 >,
  63             [] type_op_normalize_poly_fn_sig:
  64                 rustc_middle::infer::canonical::Canonical<'tcx,
  65                     rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::PolyFnSig<'tcx>>
  66                 >,
  67             [] type_op_normalize_fn_sig:
  68                 rustc_middle::infer::canonical::Canonical<'tcx,
  69                     rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::FnSig<'tcx>>
  70                 >,
  71             [] type_op_normalize_predicate:
  72                 rustc_middle::infer::canonical::Canonical<'tcx,
  73                     rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::Predicate<'tcx>>
  74                 >,
  75             [] type_op_normalize_ty:
  76                 rustc_middle::infer::canonical::Canonical<'tcx,
  77                     rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::Ty<'tcx>>
  78                 >,
  79             [few] all_traits: Vec<rustc_hir::def_id::DefId>,
  80             [few] privacy_access_levels: rustc_middle::middle::privacy::AccessLevels,
  81             [few] foreign_module: rustc_middle::middle::cstore::ForeignModule,
  82             [few] foreign_modules: Vec<rustc_middle::middle::cstore::ForeignModule>,
  83             [] upvars_mentioned: rustc_data_structures::fx::FxIndexMap<rustc_hir::HirId, rustc_hir::Upvar>,
  84             [] object_safety_violations: rustc_middle::traits::ObjectSafetyViolation,
  85             [] codegen_unit: rustc_middle::mir::mono::CodegenUnit<$tcx>,
  86             [] attribute: rustc_ast::Attribute,
  87             [] name_set: rustc_data_structures::fx::FxHashSet<rustc_span::symbol::Symbol>,
  88             [] hir_id_set: rustc_hir::HirIdSet,
  89
  90             // Interned types
  91             [] tys: rustc_middle::ty::TyS<$tcx>,
  92             [] predicates: rustc_middle::ty::PredicateInner<$tcx>,
  93
  94             // HIR query types
  95             [few] indexed_hir: rustc_middle::hir::IndexedHir<$tcx>,
  96             [few] hir_definitions: rustc_hir::definitions::Definitions,
  97             [] hir_owner: rustc_middle::hir::Owner<$tcx>,
  98             [] hir_owner_nodes: rustc_middle::hir::OwnerNodes<$tcx>,
  99
 100             // Note that this deliberately duplicates items in the `rustc_hir::arena`,
 101             // since we need to allocate this type on both the `rustc_hir` arena
 102             // (during lowering) and the `librustc_middle` arena (for decoding MIR)
 103             [decode] asm_template: rustc_ast::InlineAsmTemplatePiece,
 104
 105             // This is used to decode the &'tcx [Span] for InlineAsm's line_spans.
 106             [decode] span: rustc_span::Span,
 107             [decode] used_trait_imports: rustc_data_structures::fx::FxHashSet<rustc_hir::def_id::LocalDefId>,
 108         ], $tcx);
 109     )
 110 }
 111
 112 arena_types!(rustc_arena::declare_arena, 'tcx);