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, rustc_target::abi::Layout;
  15             // AdtDef are interned and compared by address
  16             [] adt_def: rustc_middle::ty::AdtDef, rustc_middle::ty::AdtDef;
  17             [] mir: rustc_middle::mir::Body<$tcx>, rustc_middle::mir::Body<$tcx>;
  18             [decode] tables: rustc_middle::ty::TypeckTables<$tcx>, rustc_middle::ty::TypeckTables<'_x>;
  19             [] const_allocs: rustc_middle::mir::interpret::Allocation, rustc_middle::mir::interpret::Allocation;
  20             // Required for the incremental on-disk cache
  21             [few, decode] mir_keys: rustc_hir::def_id::DefIdSet, rustc_hir::def_id::DefIdSet;
  22             [] region_scope_tree: rustc_middle::middle::region::ScopeTree, rustc_middle::middle::region::ScopeTree;
  23             [] dropck_outlives:
  24                 rustc_middle::infer::canonical::Canonical<'tcx,
  25                     rustc_middle::infer::canonical::QueryResponse<'tcx,
  26                         rustc_middle::traits::query::DropckOutlivesResult<'tcx>
  27                     >
  28                 >,
  29                 rustc_middle::infer::canonical::Canonical<'_x,
  30                     rustc_middle::infer::canonical::QueryResponse<'_y,
  31                         rustc_middle::traits::query::DropckOutlivesResult<'_z>
  32                     >
  33                 >;
  34             [] normalize_projection_ty:
  35                 rustc_middle::infer::canonical::Canonical<'tcx,
  36                     rustc_middle::infer::canonical::QueryResponse<'tcx,
  37                         rustc_middle::traits::query::NormalizationResult<'tcx>
  38                     >
  39                 >,
  40                 rustc_middle::infer::canonical::Canonical<'_x,
  41                     rustc_middle::infer::canonical::QueryResponse<'_y,
  42                         rustc_middle::traits::query::NormalizationResult<'_z>
  43                     >
  44                 >;
  45             [] implied_outlives_bounds:
  46                 rustc_middle::infer::canonical::Canonical<'tcx,
  47                     rustc_middle::infer::canonical::QueryResponse<'tcx,
  48                         Vec<rustc_middle::traits::query::OutlivesBound<'tcx>>
  49                     >
  50                 >,
  51                 rustc_middle::infer::canonical::Canonical<'_x,
  52                     rustc_middle::infer::canonical::QueryResponse<'_y,
  53                         Vec<rustc_middle::traits::query::OutlivesBound<'_z>>
  54                     >
  55                 >;
  56             [] type_op_subtype:
  57                 rustc_middle::infer::canonical::Canonical<'tcx,
  58                     rustc_middle::infer::canonical::QueryResponse<'tcx, ()>
  59                 >,
  60                 rustc_middle::infer::canonical::Canonical<'_x,
  61                     rustc_middle::infer::canonical::QueryResponse<'_y, ()>
  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                 rustc_middle::infer::canonical::Canonical<'_x,
  68                     rustc_middle::infer::canonical::QueryResponse<'_y, rustc_middle::ty::PolyFnSig<'_z>>
  69                 >;
  70             [] type_op_normalize_fn_sig:
  71                 rustc_middle::infer::canonical::Canonical<'tcx,
  72                     rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::FnSig<'tcx>>
  73                 >,
  74                 rustc_middle::infer::canonical::Canonical<'_x,
  75                     rustc_middle::infer::canonical::QueryResponse<'_y, rustc_middle::ty::FnSig<'_z>>
  76                 >;
  77             [] type_op_normalize_predicate:
  78                 rustc_middle::infer::canonical::Canonical<'tcx,
  79                     rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::Predicate<'tcx>>
  80                 >,
  81                 rustc_middle::infer::canonical::Canonical<'_x,
  82                     rustc_middle::infer::canonical::QueryResponse<'_y, rustc_middle::ty::Predicate<'_z>>
  83                 >;
  84             [] type_op_normalize_ty:
  85                 rustc_middle::infer::canonical::Canonical<'tcx,
  86                     rustc_middle::infer::canonical::QueryResponse<'tcx, rustc_middle::ty::Ty<'tcx>>
  87                 >,
  88                 rustc_middle::infer::canonical::Canonical<'_x,
  89                     rustc_middle::infer::canonical::QueryResponse<'_y, &'_z rustc_middle::ty::TyS<'_w>>
  90                 >;
  91             [few] all_traits: Vec<rustc_hir::def_id::DefId>, Vec<rustc_hir::def_id::DefId>;
  92             [few] privacy_access_levels: rustc_middle::middle::privacy::AccessLevels, rustc_middle::middle::privacy::AccessLevels;
  93             [few] foreign_module: rustc_middle::middle::cstore::ForeignModule, rustc_middle::middle::cstore::ForeignModule;
  94             [few] foreign_modules: Vec<rustc_middle::middle::cstore::ForeignModule>, Vec<rustc_middle::middle::cstore::ForeignModule>;
  95             [] upvars_mentioned: rustc_data_structures::fx::FxIndexMap<rustc_hir::HirId, rustc_hir::Upvar>, rustc_data_structures::fx::FxIndexMap<rustc_hir::HirId, rustc_hir::Upvar>;
  96             [] object_safety_violations: rustc_middle::traits::ObjectSafetyViolation, rustc_middle::traits::ObjectSafetyViolation;
  97             [] codegen_unit: rustc_middle::mir::mono::CodegenUnit<$tcx>, rustc_middle::mir::mono::CodegenUnit<'_x>;
  98             [] attribute: rustc_ast::ast::Attribute, rustc_ast::ast::Attribute;
  99             [] name_set: rustc_data_structures::fx::FxHashSet<rustc_span::symbol::Symbol>, rustc_data_structures::fx::FxHashSet<rustc_span::symbol::Symbol>;
 100             [] hir_id_set: rustc_hir::HirIdSet, rustc_hir::HirIdSet;
 101
 102             // Interned types
 103             [] tys: rustc_middle::ty::TyS<$tcx>, rustc_middle::ty::TyS<'_x>;
 104             [] predicates: rustc_middle::ty::PredicateInner<$tcx>, rustc_middle::ty::PredicateInner<'_x>;
 105
 106             // HIR query types
 107             [few] indexed_hir: rustc_middle::hir::map::IndexedHir<$tcx>, rustc_middle::hir::map::IndexedHir<'_x>;
 108             [few] hir_definitions: rustc_hir::definitions::Definitions, rustc_hir::definitions::Definitions;
 109             [] hir_owner: rustc_middle::hir::Owner<$tcx>, rustc_middle::hir::Owner<'_x>;
 110             [] hir_owner_nodes: rustc_middle::hir::OwnerNodes<$tcx>, rustc_middle::hir::OwnerNodes<'_x>;
 111
 112             // Note that this deliberately duplicates items in the `rustc_hir::arena`,
 113             // since we need to allocate this type on both the `rustc_hir` arena
 114             // (during lowering) and the `librustc_middle` arena (for decoding MIR)
 115             [decode] asm_template: rustc_ast::ast::InlineAsmTemplatePiece, rustc_ast::ast::InlineAsmTemplatePiece;
 116
 117             // This is used to decode the &'tcx [Span] for InlineAsm's line_spans.
 118             [decode] span: rustc_span::Span, rustc_span::Span;
 119             [decode] used_trait_imports: rustc_data_structures::fx::FxHashSet<rustc_hir::def_id::LocalDefId>, rustc_data_structures::fx::FxHashSet<rustc_hir::def_id::LocalDefId>;
 120         ], $tcx);
 121     )
 122 }
 123
 124 arena_types!(rustc_arena::declare_arena, [], 'tcx);