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