1 use crate::dep_graph::SerializedDepNodeIndex;
2 use crate::mir::interpret::{GlobalId, LitToConstInput};
4 use crate::traits::query::{
5 CanonicalPredicateGoal, CanonicalProjectionGoal, CanonicalTyGoal,
6 CanonicalTypeOpAscribeUserTypeGoal, CanonicalTypeOpEqGoal, CanonicalTypeOpNormalizeGoal,
7 CanonicalTypeOpProvePredicateGoal, CanonicalTypeOpSubtypeGoal,
9 use crate::ty::query::queries;
10 use crate::ty::subst::{GenericArg, SubstsRef};
11 use crate::ty::{self, ParamEnvAnd, Ty, TyCtxt};
12 use rustc_hir::def_id::{CrateNum, DefId, LocalDefId};
13 use rustc_query_system::query::QueryDescription;
15 use rustc_span::symbol::Symbol;
18 fn describe_as_module(def_id: DefId, tcx: TyCtxt<'_>) -> String {
19 if def_id.is_top_level_module() {
20 "top-level module".to_string()
22 format!("module `{}`", tcx.def_path_str(def_id))
26 // Each of these queries corresponds to a function pointer field in the
27 // `Providers` struct for requesting a value of that type, and a method
28 // on `tcx: TyCtxt` (and `tcx.at(span)`) for doing that request in a way
29 // which memoizes and does dep-graph tracking, wrapping around the actual
30 // `Providers` that the driver creates (using several `rustc_*` crates).
32 // The result type of each query must implement `Clone`, and additionally
33 // `ty::query::values::Value`, which produces an appropriate placeholder
34 // (error) value if the query resulted in a query cycle.
35 // Queries marked with `fatal_cycle` do not need the latter implementation,
36 // as they will raise an fatal error on query cycles instead.
39 query trigger_delay_span_bug(key: DefId) -> () {
40 desc { "trigger a delay span bug" }
45 // Represents crate as a whole (as distinct from the top-level crate module).
46 // If you call `hir_crate` (e.g., indirectly by calling `tcx.hir().krate()`),
47 // we will have to assume that any change means that you need to be recompiled.
48 // This is because the `hir_crate` query gives you access to all other items.
49 // To avoid this fate, do not call `tcx.hir().krate()`; instead,
50 // prefer wrappers like `tcx.visit_all_items_in_krate()`.
51 query hir_crate(key: CrateNum) -> &'tcx Crate<'tcx> {
54 desc { "get the crate HIR" }
57 // The indexed HIR. This can be conveniently accessed by `tcx.hir()`.
58 // Avoid calling this query directly.
59 query index_hir(_: CrateNum) -> &'tcx map::IndexedHir<'tcx> {
65 // The items in a module.
67 // This can be conveniently accessed by `tcx.hir().visit_item_likes_in_module`.
68 // Avoid calling this query directly.
69 query hir_module_items(key: LocalDefId) -> &'tcx hir::ModuleItems {
71 desc { |tcx| "HIR module items in `{}`", tcx.def_path_str(key.to_def_id()) }
74 // Gives access to the HIR node for the HIR owner `key`.
76 // This can be conveniently accessed by methods on `tcx.hir()`.
77 // Avoid calling this query directly.
78 query hir_owner(key: LocalDefId) -> Option<&'tcx crate::hir::Owner<'tcx>> {
80 desc { |tcx| "HIR owner of `{}`", tcx.def_path_str(key.to_def_id()) }
83 // Gives access to the HIR nodes and bodies inside the HIR owner `key`.
85 // This can be conveniently accessed by methods on `tcx.hir()`.
86 // Avoid calling this query directly.
87 query hir_owner_nodes(key: LocalDefId) -> Option<&'tcx crate::hir::OwnerNodes<'tcx>> {
89 desc { |tcx| "HIR owner items in `{}`", tcx.def_path_str(key.to_def_id()) }
92 /// Records the type of every item.
93 query type_of(key: DefId) -> Ty<'tcx> {
94 desc { |tcx| "computing type of `{}`", tcx.def_path_str(key) }
95 cache_on_disk_if { key.is_local() }
98 query analysis(key: CrateNum) -> Result<(), ErrorReported> {
100 desc { "running analysis passes on this crate" }
103 /// Maps from the `DefId` of an item (trait/struct/enum/fn) to its
104 /// associated generics.
105 query generics_of(key: DefId) -> ty::Generics {
106 desc { |tcx| "computing generics of `{}`", tcx.def_path_str(key) }
107 storage(ArenaCacheSelector<'tcx>)
108 cache_on_disk_if { key.is_local() }
109 load_cached(tcx, id) {
110 let generics: Option<ty::Generics> = tcx.queries.on_disk_cache
111 .try_load_query_result(tcx, id);
116 /// Maps from the `DefId` of an item (trait/struct/enum/fn) to the
117 /// predicates (where-clauses) that must be proven true in order
118 /// to reference it. This is almost always the "predicates query"
121 /// `predicates_of` builds on `predicates_defined_on` -- in fact,
122 /// it is almost always the same as that query, except for the
123 /// case of traits. For traits, `predicates_of` contains
124 /// an additional `Self: Trait<...>` predicate that users don't
125 /// actually write. This reflects the fact that to invoke the
126 /// trait (e.g., via `Default::default`) you must supply types
127 /// that actually implement the trait. (However, this extra
128 /// predicate gets in the way of some checks, which are intended
129 /// to operate over only the actual where-clauses written by the
131 query predicates_of(key: DefId) -> ty::GenericPredicates<'tcx> {
132 desc { |tcx| "computing predicates of `{}`", tcx.def_path_str(key) }
133 cache_on_disk_if { key.is_local() }
136 query native_libraries(_: CrateNum) -> Lrc<Vec<NativeLib>> {
137 desc { "looking up the native libraries of a linked crate" }
140 query lint_levels(_: CrateNum) -> LintLevelMap {
141 storage(ArenaCacheSelector<'tcx>)
143 desc { "computing the lint levels for items in this crate" }
146 query parent_module_from_def_id(key: LocalDefId) -> LocalDefId {
148 desc { |tcx| "parent module of `{}`", tcx.def_path_str(key.to_def_id()) }
153 query is_panic_runtime(_: CrateNum) -> bool {
155 desc { "checking if the crate is_panic_runtime" }
160 /// Set of all the `DefId`s in this crate that have MIR associated with
161 /// them. This includes all the body owners, but also things like struct
163 query mir_keys(_: CrateNum) -> FxHashSet<LocalDefId> {
164 storage(ArenaCacheSelector<'tcx>)
165 desc { "getting a list of all mir_keys" }
168 /// Maps DefId's that have an associated `mir::Body` to the result
169 /// of the MIR const-checking pass. This is the set of qualifs in
170 /// the final value of a `const`.
171 query mir_const_qualif(key: DefId) -> mir::ConstQualifs {
172 desc { |tcx| "const checking `{}`", tcx.def_path_str(key) }
173 cache_on_disk_if { key.is_local() }
176 /// Fetch the MIR for a given `DefId` right after it's built - this includes
177 /// unreachable code.
178 query mir_built(key: LocalDefId) -> Steal<mir::Body<'tcx>> {
179 storage(ArenaCacheSelector<'tcx>)
180 desc { |tcx| "building MIR for `{}`", tcx.def_path_str(key.to_def_id()) }
183 /// Fetch the MIR for a given `DefId` up till the point where it is
184 /// ready for const qualification.
186 /// See the README for the `mir` module for details.
187 query mir_const(key: DefId) -> Steal<mir::Body<'tcx>> {
188 desc { |tcx| "processing MIR for `{}`", tcx.def_path_str(key) }
189 storage(ArenaCacheSelector<'tcx>)
193 query mir_validated(key: LocalDefId) ->
195 Steal<mir::Body<'tcx>>,
196 Steal<IndexVec<mir::Promoted, mir::Body<'tcx>>>
198 storage(ArenaCacheSelector<'tcx>)
200 desc { |tcx| "processing `{}`", tcx.def_path_str(key.to_def_id()) }
203 /// MIR after our optimization passes have run. This is MIR that is ready
204 /// for codegen. This is also the only query that can fetch non-local MIR, at present.
205 query optimized_mir(key: DefId) -> mir::Body<'tcx> {
206 desc { |tcx| "optimizing MIR for `{}`", tcx.def_path_str(key) }
207 storage(ArenaCacheSelector<'tcx>)
208 cache_on_disk_if { key.is_local() }
211 query promoted_mir(key: DefId) -> IndexVec<mir::Promoted, mir::Body<'tcx>> {
212 desc { |tcx| "optimizing promoted MIR for `{}`", tcx.def_path_str(key) }
213 storage(ArenaCacheSelector<'tcx>)
214 cache_on_disk_if { key.is_local() }
219 // Erases regions from `ty` to yield a new type.
220 // Normally you would just use `tcx.erase_regions(&value)`,
221 // however, which uses this query as a kind of cache.
222 query erase_regions_ty(ty: Ty<'tcx>) -> Ty<'tcx> {
223 // This query is not expected to have input -- as a result, it
224 // is not a good candidates for "replay" because it is essentially a
225 // pure function of its input (and hence the expectation is that
226 // no caller would be green **apart** from just these
227 // queries). Making it anonymous avoids hashing the result, which
228 // may save a bit of time.
230 desc { "erasing regions from `{:?}`", ty }
235 query wasm_import_module_map(_: CrateNum) -> FxHashMap<DefId, String> {
236 storage(ArenaCacheSelector<'tcx>)
237 desc { "wasm import module map" }
242 /// Maps from the `DefId` of an item (trait/struct/enum/fn) to the
243 /// predicates (where-clauses) directly defined on it. This is
244 /// equal to the `explicit_predicates_of` predicates plus the
245 /// `inferred_outlives_of` predicates.
246 query predicates_defined_on(key: DefId) -> ty::GenericPredicates<'tcx> {
247 desc { |tcx| "computing predicates of `{}`", tcx.def_path_str(key) }
250 /// Returns the predicates written explicitly by the user.
251 query explicit_predicates_of(key: DefId) -> ty::GenericPredicates<'tcx> {
252 desc { |tcx| "computing explicit predicates of `{}`", tcx.def_path_str(key) }
255 /// Returns the inferred outlives predicates (e.g., for `struct
256 /// Foo<'a, T> { x: &'a T }`, this would return `T: 'a`).
257 query inferred_outlives_of(key: DefId) -> &'tcx [(ty::Predicate<'tcx>, Span)] {
258 desc { |tcx| "computing inferred outlives predicates of `{}`", tcx.def_path_str(key) }
261 /// Maps from the `DefId` of a trait to the list of
262 /// super-predicates. This is a subset of the full list of
263 /// predicates. We store these in a separate map because we must
264 /// evaluate them even during type conversion, often before the
265 /// full predicates are available (note that supertraits have
266 /// additional acyclicity requirements).
267 query super_predicates_of(key: DefId) -> ty::GenericPredicates<'tcx> {
268 desc { |tcx| "computing the supertraits of `{}`", tcx.def_path_str(key) }
271 /// To avoid cycles within the predicates of a single item we compute
272 /// per-type-parameter predicates for resolving `T::AssocTy`.
273 query type_param_predicates(key: (DefId, LocalDefId)) -> ty::GenericPredicates<'tcx> {
274 desc { |tcx| "computing the bounds for type parameter `{}`", {
275 let id = tcx.hir().as_local_hir_id(key.1);
276 tcx.hir().ty_param_name(id)
280 query trait_def(key: DefId) -> ty::TraitDef {
281 desc { |tcx| "computing trait definition for `{}`", tcx.def_path_str(key) }
282 storage(ArenaCacheSelector<'tcx>)
284 query adt_def(key: DefId) -> &'tcx ty::AdtDef {
285 desc { |tcx| "computing ADT definition for `{}`", tcx.def_path_str(key) }
287 query adt_destructor(key: DefId) -> Option<ty::Destructor> {
288 desc { |tcx| "computing `Drop` impl for `{}`", tcx.def_path_str(key) }
291 // The cycle error here should be reported as an error by `check_representable`.
292 // We consider the type as Sized in the meanwhile to avoid
293 // further errors (done in impl Value for AdtSizedConstraint).
294 // Use `cycle_delay_bug` to delay the cycle error here to be emitted later
295 // in case we accidentally otherwise don't emit an error.
296 query adt_sized_constraint(
298 ) -> AdtSizedConstraint<'tcx> {
299 desc { |tcx| "computing `Sized` constraints for `{}`", tcx.def_path_str(key) }
303 query adt_dtorck_constraint(
305 ) -> Result<DtorckConstraint<'tcx>, NoSolution> {
306 desc { |tcx| "computing drop-check constraints for `{}`", tcx.def_path_str(key) }
309 /// Returns `true` if this is a const fn, use the `is_const_fn` to know whether your crate
310 /// actually sees it as const fn (e.g., the const-fn-ness might be unstable and you might
311 /// not have the feature gate active).
313 /// **Do not call this function manually.** It is only meant to cache the base data for the
314 /// `is_const_fn` function.
315 query is_const_fn_raw(key: DefId) -> bool {
316 desc { |tcx| "checking if item is const fn: `{}`", tcx.def_path_str(key) }
319 /// Returns `true` if this is a const `impl`. **Do not call this function manually.**
321 /// This query caches the base data for the `is_const_impl` helper function, which also
322 /// takes into account stability attributes (e.g., `#[rustc_const_unstable]`).
323 query is_const_impl_raw(key: DefId) -> bool {
324 desc { |tcx| "checking if item is const impl: `{}`", tcx.def_path_str(key) }
327 query asyncness(key: DefId) -> hir::IsAsync {
328 desc { |tcx| "checking if the function is async: `{}`", tcx.def_path_str(key) }
331 /// Returns `true` if calls to the function may be promoted.
333 /// This is either because the function is e.g., a tuple-struct or tuple-variant
334 /// constructor, or because it has the `#[rustc_promotable]` attribute. The attribute should
335 /// be removed in the future in favour of some form of check which figures out whether the
336 /// function does not inspect the bits of any of its arguments (so is essentially just a
337 /// constructor function).
338 query is_promotable_const_fn(key: DefId) -> bool {
339 desc { |tcx| "checking if item is promotable: `{}`", tcx.def_path_str(key) }
342 query const_fn_is_allowed_fn_ptr(key: DefId) -> bool {
343 desc { |tcx| "checking if const fn allows `fn()` types: `{}`", tcx.def_path_str(key) }
346 /// Returns `true` if this is a foreign item (i.e., linked via `extern { ... }`).
347 query is_foreign_item(key: DefId) -> bool {
348 desc { |tcx| "checking if `{}` is a foreign item", tcx.def_path_str(key) }
351 /// Returns `Some(mutability)` if the node pointed to by `def_id` is a static item.
352 query static_mutability(def_id: DefId) -> Option<hir::Mutability> {
353 desc { |tcx| "looking up static mutability of `{}`", tcx.def_path_str(def_id) }
356 /// Returns `Some(generator_kind)` if the node pointed to by `def_id` is a generator.
357 query generator_kind(def_id: DefId) -> Option<hir::GeneratorKind> {
358 desc { |tcx| "looking up generator kind of `{}`", tcx.def_path_str(def_id) }
361 /// Gets a map with the variance of every item; use `item_variance` instead.
362 query crate_variances(_: CrateNum) -> ty::CrateVariancesMap<'tcx> {
363 storage(ArenaCacheSelector<'tcx>)
364 desc { "computing the variances for items in this crate" }
367 /// Maps from the `DefId` of a type or region parameter to its (inferred) variance.
368 query variances_of(def_id: DefId) -> &'tcx [ty::Variance] {
369 desc { |tcx| "computing the variances of `{}`", tcx.def_path_str(def_id) }
374 /// Maps from thee `DefId` of a type to its (inferred) outlives.
375 query inferred_outlives_crate(_: CrateNum)
376 -> ty::CratePredicatesMap<'tcx> {
377 storage(ArenaCacheSelector<'tcx>)
378 desc { "computing the inferred outlives predicates for items in this crate" }
383 /// Maps from an impl/trait `DefId to a list of the `DefId`s of its items.
384 query associated_item_def_ids(key: DefId) -> &'tcx [DefId] {
385 desc { |tcx| "collecting associated items of `{}`", tcx.def_path_str(key) }
388 /// Maps from a trait item to the trait item "descriptor".
389 query associated_item(key: DefId) -> ty::AssocItem {
390 desc { |tcx| "computing associated item data for `{}`", tcx.def_path_str(key) }
391 storage(ArenaCacheSelector<'tcx>)
394 /// Collects the associated items defined on a trait or impl.
395 query associated_items(key: DefId) -> ty::AssociatedItems<'tcx> {
396 storage(ArenaCacheSelector<'tcx>)
397 desc { |tcx| "collecting associated items of {}", tcx.def_path_str(key) }
400 query impl_trait_ref(key: DefId) -> Option<ty::TraitRef<'tcx>> {
401 desc { |tcx| "computing trait implemented by `{}`", tcx.def_path_str(key) }
403 query impl_polarity(key: DefId) -> ty::ImplPolarity {
404 desc { |tcx| "computing implementation polarity of `{}`", tcx.def_path_str(key) }
407 query issue33140_self_ty(key: DefId) -> Option<ty::Ty<'tcx>> {
408 desc { |tcx| "computing Self type wrt issue #33140 `{}`", tcx.def_path_str(key) }
413 /// Maps a `DefId` of a type to a list of its inherent impls.
414 /// Contains implementations of methods that are inherent to a type.
415 /// Methods in these implementations don't need to be exported.
416 query inherent_impls(key: DefId) -> &'tcx [DefId] {
417 desc { |tcx| "collecting inherent impls for `{}`", tcx.def_path_str(key) }
423 /// The result of unsafety-checking this `DefId`.
424 query unsafety_check_result(key: LocalDefId) -> mir::UnsafetyCheckResult {
425 desc { |tcx| "unsafety-checking `{}`", tcx.def_path_str(key.to_def_id()) }
426 cache_on_disk_if { true }
427 storage(ArenaCacheSelector<'tcx>)
430 /// HACK: when evaluated, this reports a "unsafe derive on repr(packed)" error.
432 /// Unsafety checking is executed for each method separately, but we only want
433 /// to emit this error once per derive. As there are some impls with multiple
434 /// methods, we use a query for deduplication.
435 query unsafe_derive_on_repr_packed(key: LocalDefId) -> () {
436 desc { |tcx| "processing `{}`", tcx.def_path_str(key.to_def_id()) }
439 /// The signature of functions.
440 query fn_sig(key: DefId) -> ty::PolyFnSig<'tcx> {
441 desc { |tcx| "computing function signature of `{}`", tcx.def_path_str(key) }
446 query lint_mod(key: LocalDefId) -> () {
447 desc { |tcx| "linting {}", describe_as_module(key.to_def_id(), tcx) }
450 /// Checks the attributes in the module.
451 query check_mod_attrs(key: DefId) -> () {
452 desc { |tcx| "checking attributes in {}", describe_as_module(key, tcx) }
455 query check_mod_unstable_api_usage(key: DefId) -> () {
456 desc { |tcx| "checking for unstable API usage in {}", describe_as_module(key, tcx) }
459 /// Checks the const bodies in the module for illegal operations (e.g. `if` or `loop`).
460 query check_mod_const_bodies(key: DefId) -> () {
461 desc { |tcx| "checking consts in {}", describe_as_module(key, tcx) }
464 /// Checks the loops in the module.
465 query check_mod_loops(key: DefId) -> () {
466 desc { |tcx| "checking loops in {}", describe_as_module(key, tcx) }
469 query check_mod_item_types(key: DefId) -> () {
470 desc { |tcx| "checking item types in {}", describe_as_module(key, tcx) }
473 query check_mod_privacy(key: LocalDefId) -> () {
474 desc { |tcx| "checking privacy in {}", describe_as_module(key.to_def_id(), tcx) }
477 query check_mod_intrinsics(key: DefId) -> () {
478 desc { |tcx| "checking intrinsics in {}", describe_as_module(key, tcx) }
481 query check_mod_liveness(key: DefId) -> () {
482 desc { |tcx| "checking liveness of variables in {}", describe_as_module(key, tcx) }
485 query check_mod_impl_wf(key: DefId) -> () {
486 desc { |tcx| "checking that impls are well-formed in {}", describe_as_module(key, tcx) }
489 query collect_mod_item_types(key: DefId) -> () {
490 desc { |tcx| "collecting item types in {}", describe_as_module(key, tcx) }
493 /// Caches `CoerceUnsized` kinds for impls on custom types.
494 query coerce_unsized_info(key: DefId)
495 -> ty::adjustment::CoerceUnsizedInfo {
496 desc { |tcx| "computing CoerceUnsized info for `{}`", tcx.def_path_str(key) }
501 query typeck_item_bodies(_: CrateNum) -> () {
502 desc { "type-checking all item bodies" }
505 query typeck_tables_of(key: LocalDefId) -> &'tcx ty::TypeckTables<'tcx> {
506 desc { |tcx| "type-checking `{}`", tcx.def_path_str(key.to_def_id()) }
507 cache_on_disk_if { true }
509 query diagnostic_only_typeck_tables_of(key: LocalDefId) -> &'tcx ty::TypeckTables<'tcx> {
510 desc { |tcx| "type-checking `{}`", tcx.def_path_str(key.to_def_id()) }
511 cache_on_disk_if { true }
512 load_cached(tcx, id) {
513 let typeck_tables: Option<ty::TypeckTables<'tcx>> = tcx
514 .queries.on_disk_cache
515 .try_load_query_result(tcx, id);
517 typeck_tables.map(|x| &*tcx.arena.alloc(x))
523 query used_trait_imports(key: LocalDefId) -> &'tcx DefIdSet {
524 desc { |tcx| "used_trait_imports `{}`", tcx.def_path_str(key.to_def_id()) }
525 cache_on_disk_if { true }
530 query has_typeck_tables(def_id: DefId) -> bool {
531 desc { |tcx| "checking whether `{}` has a body", tcx.def_path_str(def_id) }
534 query coherent_trait(def_id: DefId) -> () {
535 desc { |tcx| "coherence checking all impls of trait `{}`", tcx.def_path_str(def_id) }
540 /// Borrow-checks the function body. If this is a closure, returns
541 /// additional requirements that the closure's creator must verify.
542 query mir_borrowck(key: LocalDefId) -> mir::BorrowCheckResult<'tcx> {
543 storage(ArenaCacheSelector<'tcx>)
544 desc { |tcx| "borrow-checking `{}`", tcx.def_path_str(key.to_def_id()) }
545 cache_on_disk_if(tcx, opt_result) {
546 tcx.is_closure(key.to_def_id())
547 || opt_result.map_or(false, |r| !r.concrete_opaque_types.is_empty())
553 /// Gets a complete map from all types to their inherent impls.
554 /// Not meant to be used directly outside of coherence.
555 /// (Defined only for `LOCAL_CRATE`.)
556 query crate_inherent_impls(k: CrateNum)
557 -> CrateInherentImpls {
558 storage(ArenaCacheSelector<'tcx>)
560 desc { "all inherent impls defined in crate `{:?}`", k }
563 /// Checks all types in the crate for overlap in their inherent impls. Reports errors.
564 /// Not meant to be used directly outside of coherence.
565 /// (Defined only for `LOCAL_CRATE`.)
566 query crate_inherent_impls_overlap_check(_: CrateNum)
569 desc { "check for overlap between inherent impls defined in this crate" }
574 /// Evaluates a constant without running sanity checks.
576 /// **Do not use this** outside const eval. Const eval uses this to break query cycles
577 /// during validation. Please add a comment to every use site explaining why using
578 /// `const_eval_validated` isn't sufficient. The returned constant also isn't in a suitable
579 /// form to be used outside of const eval.
580 query const_eval_raw(key: ty::ParamEnvAnd<'tcx, GlobalId<'tcx>>)
581 -> ConstEvalRawResult<'tcx> {
583 "const-evaluating `{}`",
584 tcx.def_path_str(key.value.instance.def.def_id())
588 /// Results of evaluating const items or constants embedded in
589 /// other items (such as enum variant explicit discriminants).
591 /// In contrast to `const_eval_raw` this performs some validation on the constant, and
592 /// returns a proper constant that is usable by the rest of the compiler.
594 /// **Do not use this** directly, use one of the following wrappers: `tcx.const_eval_poly`,
595 /// `tcx.const_eval_resolve`, `tcx.const_eval_instance`, or `tcx.const_eval_global_id`.
596 query const_eval_validated(key: ty::ParamEnvAnd<'tcx, GlobalId<'tcx>>)
597 -> ConstEvalResult<'tcx> {
599 "const-evaluating + checking `{}`",
600 tcx.def_path_str(key.value.instance.def.def_id())
602 cache_on_disk_if(_, opt_result) {
603 // Only store results without errors
604 opt_result.map_or(true, |r| r.is_ok())
608 /// Destructure a constant ADT or array into its variant index and its
610 query destructure_const(
611 key: ty::ParamEnvAnd<'tcx, &'tcx ty::Const<'tcx>>
612 ) -> mir::DestructuredConst<'tcx> {
613 desc { "destructure constant" }
616 query const_caller_location(key: (rustc_span::Symbol, u32, u32)) -> ConstValue<'tcx> {
617 desc { "get a &core::panic::Location referring to a span" }
621 key: LitToConstInput<'tcx>
622 ) -> Result<&'tcx ty::Const<'tcx>, LitToConstError> {
623 desc { "converting literal to const" }
628 query check_match(key: DefId) {
629 desc { |tcx| "match-checking `{}`", tcx.def_path_str(key) }
630 cache_on_disk_if { key.is_local() }
633 /// Performs part of the privacy check and computes "access levels".
634 query privacy_access_levels(_: CrateNum) -> &'tcx AccessLevels {
636 desc { "privacy access levels" }
638 query check_private_in_public(_: CrateNum) -> () {
640 desc { "checking for private elements in public interfaces" }
645 query reachable_set(_: CrateNum) -> &'tcx HirIdSet {
646 desc { "reachability" }
649 /// Per-body `region::ScopeTree`. The `DefId` should be the owner `DefId` for the body;
650 /// in the case of closures, this will be redirected to the enclosing function.
651 query region_scope_tree(def_id: DefId) -> &'tcx region::ScopeTree {
652 desc { |tcx| "computing drop scopes for `{}`", tcx.def_path_str(def_id) }
655 query mir_shims(key: ty::InstanceDef<'tcx>) -> mir::Body<'tcx> {
656 storage(ArenaCacheSelector<'tcx>)
657 desc { |tcx| "generating MIR shim for `{}`", tcx.def_path_str(key.def_id()) }
660 /// The `symbol_name` query provides the symbol name for calling a
661 /// given instance from the local crate. In particular, it will also
662 /// look up the correct symbol name of instances from upstream crates.
663 query symbol_name(key: ty::Instance<'tcx>) -> ty::SymbolName {
664 desc { "computing the symbol for `{}`", key }
665 cache_on_disk_if { true }
668 query def_kind(def_id: DefId) -> DefKind {
669 desc { |tcx| "looking up definition kind of `{}`", tcx.def_path_str(def_id) }
671 query def_span(def_id: DefId) -> Span {
672 desc { |tcx| "looking up span for `{}`", tcx.def_path_str(def_id) }
673 // FIXME(mw): DefSpans are not really inputs since they are derived from
674 // HIR. But at the moment HIR hashing still contains some hacks that allow
675 // to make type debuginfo to be source location independent. Declaring
676 // DefSpan an input makes sure that changes to these are always detected
677 // regardless of HIR hashing.
680 query lookup_stability(def_id: DefId) -> Option<&'tcx attr::Stability> {
681 desc { |tcx| "looking up stability of `{}`", tcx.def_path_str(def_id) }
683 query lookup_const_stability(def_id: DefId) -> Option<&'tcx attr::ConstStability> {
684 desc { |tcx| "looking up const stability of `{}`", tcx.def_path_str(def_id) }
686 query lookup_deprecation_entry(def_id: DefId) -> Option<DeprecationEntry> {
687 desc { |tcx| "checking whether `{}` is deprecated", tcx.def_path_str(def_id) }
689 query item_attrs(def_id: DefId) -> &'tcx [ast::Attribute] {
690 desc { |tcx| "collecting attributes of `{}`", tcx.def_path_str(def_id) }
695 query codegen_fn_attrs(def_id: DefId) -> CodegenFnAttrs {
696 desc { |tcx| "computing codegen attributes of `{}`", tcx.def_path_str(def_id) }
697 storage(ArenaCacheSelector<'tcx>)
698 cache_on_disk_if { true }
703 query fn_arg_names(def_id: DefId) -> &'tcx [Symbol] {
704 desc { |tcx| "looking up function parameter names for `{}`", tcx.def_path_str(def_id) }
706 /// Gets the rendered value of the specified constant or associated constant.
708 query rendered_const(def_id: DefId) -> String {
709 desc { |tcx| "rendering constant intializer of `{}`", tcx.def_path_str(def_id) }
711 query impl_parent(def_id: DefId) -> Option<DefId> {
712 desc { |tcx| "computing specialization parent impl of `{}`", tcx.def_path_str(def_id) }
717 query trait_of_item(def_id: DefId) -> Option<DefId> {
718 desc { |tcx| "finding trait defining `{}`", tcx.def_path_str(def_id) }
723 query is_mir_available(key: DefId) -> bool {
724 desc { |tcx| "checking if item has mir available: `{}`", tcx.def_path_str(key) }
729 query vtable_methods(key: ty::PolyTraitRef<'tcx>)
730 -> &'tcx [Option<(DefId, SubstsRef<'tcx>)>] {
731 desc { |tcx| "finding all methods for trait {}", tcx.def_path_str(key.def_id()) }
736 query codegen_fulfill_obligation(
737 key: (ty::ParamEnv<'tcx>, ty::PolyTraitRef<'tcx>)
738 ) -> Result<ImplSource<'tcx, ()>, ErrorReported> {
739 cache_on_disk_if { true }
741 "checking if `{}` fulfills its obligations",
742 tcx.def_path_str(key.1.def_id())
748 query all_local_trait_impls(key: CrateNum) -> &'tcx BTreeMap<DefId, Vec<hir::HirId>> {
749 desc { "local trait impls" }
751 query trait_impls_of(key: DefId) -> ty::trait_def::TraitImpls {
752 storage(ArenaCacheSelector<'tcx>)
753 desc { |tcx| "trait impls of `{}`", tcx.def_path_str(key) }
755 query specialization_graph_of(key: DefId) -> specialization_graph::Graph {
756 storage(ArenaCacheSelector<'tcx>)
757 desc { |tcx| "building specialization graph of trait `{}`", tcx.def_path_str(key) }
758 cache_on_disk_if { true }
760 query object_safety_violations(key: DefId) -> &'tcx [traits::ObjectSafetyViolation] {
761 desc { |tcx| "determine object safety of trait `{}`", tcx.def_path_str(key) }
764 /// Gets the ParameterEnvironment for a given item; this environment
765 /// will be in "user-facing" mode, meaning that it is suitable for
766 /// type-checking etc, and it does not normalize specializable
767 /// associated types. This is almost always what you want,
768 /// unless you are doing MIR optimizations, in which case you
769 /// might want to use `reveal_all()` method to change modes.
770 query param_env(def_id: DefId) -> ty::ParamEnv<'tcx> {
771 desc { |tcx| "computing normalized predicates of `{}`", tcx.def_path_str(def_id) }
774 /// Trait selection queries. These are best used by invoking `ty.is_copy_modulo_regions()`,
775 /// `ty.is_copy()`, etc, since that will prune the environment where possible.
776 query is_copy_raw(env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool {
777 desc { "computing whether `{}` is `Copy`", env.value }
779 /// Query backing `TyS::is_sized`.
780 query is_sized_raw(env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool {
781 desc { "computing whether `{}` is `Sized`", env.value }
783 /// Query backing `TyS::is_freeze`.
784 query is_freeze_raw(env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool {
785 desc { "computing whether `{}` is freeze", env.value }
787 /// Query backing `TyS::needs_drop`.
788 query needs_drop_raw(env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool {
789 desc { "computing whether `{}` needs drop", env.value }
792 /// Query backing `TyS::is_structural_eq_shallow`.
794 /// This is only correct for ADTs. Call `is_structural_eq_shallow` to handle all types
796 query has_structural_eq_impls(ty: Ty<'tcx>) -> bool {
798 "computing whether `{:?}` implements `PartialStructuralEq` and `StructuralEq`",
803 /// A list of types where the ADT requires drop if and only if any of
804 /// those types require drop. If the ADT is known to always need drop
805 /// then `Err(AlwaysRequiresDrop)` is returned.
806 query adt_drop_tys(def_id: DefId) -> Result<&'tcx ty::List<Ty<'tcx>>, AlwaysRequiresDrop> {
807 desc { |tcx| "computing when `{}` needs drop", tcx.def_path_str(def_id) }
808 cache_on_disk_if { true }
812 env: ty::ParamEnvAnd<'tcx, Ty<'tcx>>
813 ) -> Result<&'tcx rustc_target::abi::Layout, ty::layout::LayoutError<'tcx>> {
814 desc { "computing layout of `{}`", env.value }
819 query dylib_dependency_formats(_: CrateNum)
820 -> &'tcx [(CrateNum, LinkagePreference)] {
821 desc { "dylib dependency formats of crate" }
824 query dependency_formats(_: CrateNum)
825 -> Lrc<crate::middle::dependency_format::Dependencies>
827 desc { "get the linkage format of all dependencies" }
832 query is_compiler_builtins(_: CrateNum) -> bool {
834 desc { "checking if the crate is_compiler_builtins" }
836 query has_global_allocator(_: CrateNum) -> bool {
838 desc { "checking if the crate has_global_allocator" }
840 query has_panic_handler(_: CrateNum) -> bool {
842 desc { "checking if the crate has_panic_handler" }
844 query is_profiler_runtime(_: CrateNum) -> bool {
846 desc { "query a crate is `#![profiler_runtime]`" }
848 query panic_strategy(_: CrateNum) -> PanicStrategy {
850 desc { "query a crate's configured panic strategy" }
852 query is_no_builtins(_: CrateNum) -> bool {
854 desc { "test whether a crate has `#![no_builtins]`" }
856 query symbol_mangling_version(_: CrateNum) -> SymbolManglingVersion {
858 desc { "query a crate's symbol mangling version" }
861 query extern_crate(def_id: DefId) -> Option<&'tcx ExternCrate> {
863 desc { "getting crate's ExternCrateData" }
868 query specializes(_: (DefId, DefId)) -> bool {
869 desc { "computing whether impls specialize one another" }
871 query in_scope_traits_map(_: LocalDefId)
872 -> Option<&'tcx FxHashMap<ItemLocalId, StableVec<TraitCandidate>>> {
874 desc { "traits in scope at a block" }
879 query module_exports(def_id: LocalDefId) -> Option<&'tcx [Export<LocalDefId>]> {
880 desc { |tcx| "looking up items exported by `{}`", tcx.def_path_str(def_id.to_def_id()) }
886 query impl_defaultness(def_id: DefId) -> hir::Defaultness {
887 desc { |tcx| "looking up whether `{}` is a default impl", tcx.def_path_str(def_id) }
890 query check_item_well_formed(key: LocalDefId) -> () {
891 desc { |tcx| "checking that `{}` is well-formed", tcx.def_path_str(key.to_def_id()) }
893 query check_trait_item_well_formed(key: LocalDefId) -> () {
894 desc { |tcx| "checking that `{}` is well-formed", tcx.def_path_str(key.to_def_id()) }
896 query check_impl_item_well_formed(key: LocalDefId) -> () {
897 desc { |tcx| "checking that `{}` is well-formed", tcx.def_path_str(key.to_def_id()) }
903 // The `DefId`s of all non-generic functions and statics in the given crate
904 // that can be reached from outside the crate.
906 // We expect this items to be available for being linked to.
908 // This query can also be called for `LOCAL_CRATE`. In this case it will
909 // compute which items will be reachable to other crates, taking into account
910 // the kind of crate that is currently compiled. Crates with only a
911 // C interface have fewer reachable things.
913 // Does not include external symbols that don't have a corresponding DefId,
914 // like the compiler-generated `main` function and so on.
915 query reachable_non_generics(_: CrateNum)
916 -> DefIdMap<SymbolExportLevel> {
917 storage(ArenaCacheSelector<'tcx>)
918 desc { "looking up the exported symbols of a crate" }
920 query is_reachable_non_generic(def_id: DefId) -> bool {
921 desc { |tcx| "checking whether `{}` is an exported symbol", tcx.def_path_str(def_id) }
923 query is_unreachable_local_definition(def_id: DefId) -> bool {
925 "checking whether `{}` is reachable from outside the crate",
926 tcx.def_path_str(def_id),
932 /// The entire set of monomorphizations the local crate can safely link
933 /// to because they are exported from upstream crates. Do not depend on
934 /// this directly, as its value changes anytime a monomorphization gets
935 /// added or removed in any upstream crate. Instead use the narrower
936 /// `upstream_monomorphizations_for`, `upstream_drop_glue_for`, or, even
937 /// better, `Instance::upstream_monomorphization()`.
938 query upstream_monomorphizations(
940 ) -> DefIdMap<FxHashMap<SubstsRef<'tcx>, CrateNum>> {
941 storage(ArenaCacheSelector<'tcx>)
942 desc { "collecting available upstream monomorphizations `{:?}`", k }
945 /// Returns the set of upstream monomorphizations available for the
946 /// generic function identified by the given `def_id`. The query makes
947 /// sure to make a stable selection if the same monomorphization is
948 /// available in multiple upstream crates.
950 /// You likely want to call `Instance::upstream_monomorphization()`
951 /// instead of invoking this query directly.
952 query upstream_monomorphizations_for(def_id: DefId)
953 -> Option<&'tcx FxHashMap<SubstsRef<'tcx>, CrateNum>> {
955 "collecting available upstream monomorphizations for `{}`",
956 tcx.def_path_str(def_id),
960 /// Returns the upstream crate that exports drop-glue for the given
961 /// type (`substs` is expected to be a single-item list containing the
962 /// type one wants drop-glue for).
964 /// This is a subset of `upstream_monomorphizations_for` in order to
965 /// increase dep-tracking granularity. Otherwise adding or removing any
966 /// type with drop-glue in any upstream crate would invalidate all
967 /// functions calling drop-glue of an upstream type.
969 /// You likely want to call `Instance::upstream_monomorphization()`
970 /// instead of invoking this query directly.
972 /// NOTE: This query could easily be extended to also support other
973 /// common functions that have are large set of monomorphizations
974 /// (like `Clone::clone` for example).
975 query upstream_drop_glue_for(substs: SubstsRef<'tcx>) -> Option<CrateNum> {
976 desc { "available upstream drop-glue for `{:?}`", substs }
981 query foreign_modules(_: CrateNum) -> &'tcx [ForeignModule] {
982 desc { "looking up the foreign modules of a linked crate" }
985 /// Identifies the entry-point (e.g., the `main` function) for a given
986 /// crate, returning `None` if there is no entry point (such as for library crates).
987 query entry_fn(_: CrateNum) -> Option<(LocalDefId, EntryFnType)> {
988 desc { "looking up the entry function of a crate" }
990 query plugin_registrar_fn(_: CrateNum) -> Option<DefId> {
991 desc { "looking up the plugin registrar for a crate" }
993 query proc_macro_decls_static(_: CrateNum) -> Option<DefId> {
994 desc { "looking up the derive registrar for a crate" }
996 query crate_disambiguator(_: CrateNum) -> CrateDisambiguator {
998 desc { "looking up the disambiguator a crate" }
1000 query crate_hash(_: CrateNum) -> Svh {
1002 desc { "looking up the hash a crate" }
1004 query crate_host_hash(_: CrateNum) -> Option<Svh> {
1006 desc { "looking up the hash of a host version of a crate" }
1008 query original_crate_name(_: CrateNum) -> Symbol {
1010 desc { "looking up the original name a crate" }
1012 query extra_filename(_: CrateNum) -> String {
1014 desc { "looking up the extra filename for a crate" }
1019 query implementations_of_trait(_: (CrateNum, DefId))
1021 desc { "looking up implementations of a trait in a crate" }
1023 query all_trait_implementations(_: CrateNum)
1025 desc { "looking up all (?) trait implementations" }
1030 query dllimport_foreign_items(_: CrateNum)
1031 -> FxHashSet<DefId> {
1032 storage(ArenaCacheSelector<'tcx>)
1033 desc { "dllimport_foreign_items" }
1035 query is_dllimport_foreign_item(def_id: DefId) -> bool {
1036 desc { |tcx| "is_dllimport_foreign_item({})", tcx.def_path_str(def_id) }
1038 query is_statically_included_foreign_item(def_id: DefId) -> bool {
1039 desc { |tcx| "is_statically_included_foreign_item({})", tcx.def_path_str(def_id) }
1041 query native_library_kind(def_id: DefId)
1042 -> Option<NativeLibKind> {
1043 desc { |tcx| "native_library_kind({})", tcx.def_path_str(def_id) }
1048 query link_args(_: CrateNum) -> Lrc<Vec<String>> {
1050 desc { "looking up link arguments for a crate" }
1055 /// Lifetime resolution. See `middle::resolve_lifetimes`.
1056 query resolve_lifetimes(_: CrateNum) -> ResolveLifetimes {
1057 storage(ArenaCacheSelector<'tcx>)
1058 desc { "resolving lifetimes" }
1060 query named_region_map(_: LocalDefId) ->
1061 Option<&'tcx FxHashMap<ItemLocalId, Region>> {
1062 desc { "looking up a named region" }
1064 query is_late_bound_map(_: LocalDefId) ->
1065 Option<&'tcx FxHashSet<ItemLocalId>> {
1066 desc { "testing if a region is late bound" }
1068 query object_lifetime_defaults_map(_: LocalDefId)
1069 -> Option<&'tcx FxHashMap<ItemLocalId, Vec<ObjectLifetimeDefault>>> {
1070 desc { "looking up lifetime defaults for a region" }
1075 query visibility(def_id: DefId) -> ty::Visibility {
1076 desc { |tcx| "computing visibility of `{}`", tcx.def_path_str(def_id) }
1081 query dep_kind(_: CrateNum) -> DepKind {
1083 desc { "fetching what a dependency looks like" }
1085 query crate_name(_: CrateNum) -> Symbol {
1087 desc { "fetching what a crate is named" }
1089 query item_children(def_id: DefId) -> &'tcx [Export<hir::HirId>] {
1090 desc { |tcx| "collecting child items of `{}`", tcx.def_path_str(def_id) }
1092 query extern_mod_stmt_cnum(def_id: LocalDefId) -> Option<CrateNum> {
1093 desc { |tcx| "computing crate imported by `{}`", tcx.def_path_str(def_id.to_def_id()) }
1096 query get_lib_features(_: CrateNum) -> LibFeatures {
1097 storage(ArenaCacheSelector<'tcx>)
1099 desc { "calculating the lib features map" }
1101 query defined_lib_features(_: CrateNum)
1102 -> &'tcx [(Symbol, Option<Symbol>)] {
1103 desc { "calculating the lib features defined in a crate" }
1105 /// Returns the lang items defined in another crate by loading it from metadata.
1106 // FIXME: It is illegal to pass a `CrateNum` other than `LOCAL_CRATE` here, just get rid
1107 // of that argument?
1108 query get_lang_items(_: CrateNum) -> LanguageItems {
1109 storage(ArenaCacheSelector<'tcx>)
1111 desc { "calculating the lang items map" }
1114 /// Returns all diagnostic items defined in all crates.
1115 query all_diagnostic_items(_: CrateNum) -> FxHashMap<Symbol, DefId> {
1116 storage(ArenaCacheSelector<'tcx>)
1118 desc { "calculating the diagnostic items map" }
1121 /// Returns the lang items defined in another crate by loading it from metadata.
1122 query defined_lang_items(_: CrateNum) -> &'tcx [(DefId, usize)] {
1123 desc { "calculating the lang items defined in a crate" }
1126 /// Returns the diagnostic items defined in a crate.
1127 query diagnostic_items(_: CrateNum) -> FxHashMap<Symbol, DefId> {
1128 storage(ArenaCacheSelector<'tcx>)
1129 desc { "calculating the diagnostic items map in a crate" }
1132 query missing_lang_items(_: CrateNum) -> &'tcx [LangItem] {
1133 desc { "calculating the missing lang items in a crate" }
1135 query visible_parent_map(_: CrateNum)
1136 -> DefIdMap<DefId> {
1137 storage(ArenaCacheSelector<'tcx>)
1138 desc { "calculating the visible parent map" }
1140 query missing_extern_crate_item(_: CrateNum) -> bool {
1142 desc { "seeing if we're missing an `extern crate` item for this crate" }
1144 query used_crate_source(_: CrateNum) -> Lrc<CrateSource> {
1146 desc { "looking at the source for a crate" }
1148 query postorder_cnums(_: CrateNum) -> &'tcx [CrateNum] {
1150 desc { "generating a postorder list of CrateNums" }
1153 query upvars_mentioned(def_id: DefId) -> Option<&'tcx FxIndexMap<hir::HirId, hir::Upvar>> {
1154 desc { |tcx| "collecting upvars mentioned in `{}`", tcx.def_path_str(def_id) }
1157 query maybe_unused_trait_import(def_id: LocalDefId) -> bool {
1159 desc { |tcx| "maybe_unused_trait_import for `{}`", tcx.def_path_str(def_id.to_def_id()) }
1161 query maybe_unused_extern_crates(_: CrateNum)
1162 -> &'tcx [(LocalDefId, Span)] {
1164 desc { "looking up all possibly unused extern crates" }
1166 query names_imported_by_glob_use(def_id: LocalDefId)
1167 -> &'tcx FxHashSet<Symbol> {
1169 desc { |tcx| "names_imported_by_glob_use for `{}`", tcx.def_path_str(def_id.to_def_id()) }
1172 query stability_index(_: CrateNum) -> stability::Index<'tcx> {
1173 storage(ArenaCacheSelector<'tcx>)
1175 desc { "calculating the stability index for the local crate" }
1177 query all_crate_nums(_: CrateNum) -> &'tcx [CrateNum] {
1179 desc { "fetching all foreign CrateNum instances" }
1182 /// A vector of every trait accessible in the whole crate
1183 /// (i.e., including those from subcrates). This is used only for
1184 /// error reporting.
1185 query all_traits(_: CrateNum) -> &'tcx [DefId] {
1186 desc { "fetching all foreign and local traits" }
1191 /// The list of symbols exported from the given crate.
1193 /// - All names contained in `exported_symbols(cnum)` are guaranteed to
1194 /// correspond to a publicly visible symbol in `cnum` machine code.
1195 /// - The `exported_symbols` sets of different crates do not intersect.
1196 query exported_symbols(_: CrateNum)
1197 -> &'tcx [(ExportedSymbol<'tcx>, SymbolExportLevel)] {
1198 desc { "exported_symbols" }
1203 query collect_and_partition_mono_items(_: CrateNum)
1204 -> (&'tcx DefIdSet, &'tcx [CodegenUnit<'tcx>]) {
1206 desc { "collect_and_partition_mono_items" }
1208 query is_codegened_item(def_id: DefId) -> bool {
1209 desc { |tcx| "determining whether `{}` needs codegen", tcx.def_path_str(def_id) }
1211 query codegen_unit(_: Symbol) -> &'tcx CodegenUnit<'tcx> {
1212 desc { "codegen_unit" }
1214 query backend_optimization_level(_: CrateNum) -> OptLevel {
1215 desc { "optimization level used by backend" }
1220 query output_filenames(_: CrateNum) -> Arc<OutputFilenames> {
1222 desc { "output_filenames" }
1227 /// Do not call this query directly: invoke `normalize` instead.
1228 query normalize_projection_ty(
1229 goal: CanonicalProjectionGoal<'tcx>
1231 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, NormalizationResult<'tcx>>>,
1234 desc { "normalizing `{:?}`", goal }
1237 /// Do not call this query directly: invoke `normalize_erasing_regions` instead.
1238 query normalize_generic_arg_after_erasing_regions(
1239 goal: ParamEnvAnd<'tcx, GenericArg<'tcx>>
1240 ) -> GenericArg<'tcx> {
1241 desc { "normalizing `{}`", goal.value }
1244 query implied_outlives_bounds(
1245 goal: CanonicalTyGoal<'tcx>
1247 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, Vec<OutlivesBound<'tcx>>>>,
1250 desc { "computing implied outlives bounds for `{:?}`", goal }
1253 /// Do not call this query directly: invoke `infcx.at().dropck_outlives()` instead.
1254 query dropck_outlives(
1255 goal: CanonicalTyGoal<'tcx>
1257 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, DropckOutlivesResult<'tcx>>>,
1260 desc { "computing dropck types for `{:?}`", goal }
1263 /// Do not call this query directly: invoke `infcx.predicate_may_hold()` or
1264 /// `infcx.predicate_must_hold()` instead.
1265 query evaluate_obligation(
1266 goal: CanonicalPredicateGoal<'tcx>
1267 ) -> Result<traits::EvaluationResult, traits::OverflowError> {
1268 desc { "evaluating trait selection obligation `{}`", goal.value.value }
1271 query evaluate_goal(
1272 goal: traits::ChalkCanonicalGoal<'tcx>
1274 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>,
1277 desc { "evaluating trait selection obligation `{}`", goal.value }
1280 query type_implements_trait(
1281 key: (DefId, Ty<'tcx>, SubstsRef<'tcx>, ty::ParamEnv<'tcx>, )
1283 desc { "evaluating `type_implements_trait` `{:?}`", key }
1286 /// Do not call this query directly: part of the `Eq` type-op
1287 query type_op_ascribe_user_type(
1288 goal: CanonicalTypeOpAscribeUserTypeGoal<'tcx>
1290 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>,
1293 desc { "evaluating `type_op_ascribe_user_type` `{:?}`", goal }
1296 /// Do not call this query directly: part of the `Eq` type-op
1298 goal: CanonicalTypeOpEqGoal<'tcx>
1300 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>,
1303 desc { "evaluating `type_op_eq` `{:?}`", goal }
1306 /// Do not call this query directly: part of the `Subtype` type-op
1307 query type_op_subtype(
1308 goal: CanonicalTypeOpSubtypeGoal<'tcx>
1310 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>,
1313 desc { "evaluating `type_op_subtype` `{:?}`", goal }
1316 /// Do not call this query directly: part of the `ProvePredicate` type-op
1317 query type_op_prove_predicate(
1318 goal: CanonicalTypeOpProvePredicateGoal<'tcx>
1320 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ()>>,
1323 desc { "evaluating `type_op_prove_predicate` `{:?}`", goal }
1326 /// Do not call this query directly: part of the `Normalize` type-op
1327 query type_op_normalize_ty(
1328 goal: CanonicalTypeOpNormalizeGoal<'tcx, Ty<'tcx>>
1330 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, Ty<'tcx>>>,
1333 desc { "normalizing `{:?}`", goal }
1336 /// Do not call this query directly: part of the `Normalize` type-op
1337 query type_op_normalize_predicate(
1338 goal: CanonicalTypeOpNormalizeGoal<'tcx, ty::Predicate<'tcx>>
1340 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ty::Predicate<'tcx>>>,
1343 desc { "normalizing `{:?}`", goal }
1346 /// Do not call this query directly: part of the `Normalize` type-op
1347 query type_op_normalize_poly_fn_sig(
1348 goal: CanonicalTypeOpNormalizeGoal<'tcx, ty::PolyFnSig<'tcx>>
1350 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ty::PolyFnSig<'tcx>>>,
1353 desc { "normalizing `{:?}`", goal }
1356 /// Do not call this query directly: part of the `Normalize` type-op
1357 query type_op_normalize_fn_sig(
1358 goal: CanonicalTypeOpNormalizeGoal<'tcx, ty::FnSig<'tcx>>
1360 &'tcx Canonical<'tcx, canonical::QueryResponse<'tcx, ty::FnSig<'tcx>>>,
1363 desc { "normalizing `{:?}`", goal }
1366 query substitute_normalize_and_test_predicates(key: (DefId, SubstsRef<'tcx>)) -> bool {
1368 "testing substituted normalized predicates:`{}`",
1369 tcx.def_path_str(key.0)
1373 query method_autoderef_steps(
1374 goal: CanonicalTyGoal<'tcx>
1375 ) -> MethodAutoderefStepsResult<'tcx> {
1376 desc { "computing autoderef types for `{:?}`", goal }
1381 query target_features_whitelist(_: CrateNum) -> FxHashMap<String, Option<Symbol>> {
1382 storage(ArenaCacheSelector<'tcx>)
1384 desc { "looking up the whitelist of target features" }
1387 // Get an estimate of the size of an InstanceDef based on its MIR for CGU partitioning.
1388 query instance_def_size_estimate(def: ty::InstanceDef<'tcx>)
1390 desc { |tcx| "estimating size for `{}`", tcx.def_path_str(def.def_id()) }
1393 query features_query(_: CrateNum) -> &'tcx rustc_feature::Features {
1395 desc { "looking up enabled feature gates" }
1398 /// Attempt to resolve the given `DefId` to an `Instance`, for the
1399 /// given generics args (`SubstsRef`), returning one of:
1400 /// * `Ok(Some(instance))` on success
1401 /// * `Ok(None)` when the `SubstsRef` are still too generic,
1402 /// and therefore don't allow finding the final `Instance`
1403 /// * `Err(ErrorReported)` when the `Instance` resolution process
1404 /// couldn't complete due to errors elsewhere - this is distinct
1405 /// from `Ok(None)` to avoid misleading diagnostics when an error
1406 /// has already been/will be emitted, for the original cause
1407 query resolve_instance(
1408 key: ty::ParamEnvAnd<'tcx, (DefId, SubstsRef<'tcx>)>
1409 ) -> Result<Option<ty::Instance<'tcx>>, ErrorReported> {
1410 desc { "resolving instance `{}`", ty::Instance::new(key.value.0, key.value.1) }