bjoernager/rust
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Use is_lang_item more aggressively

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This commit is contained in:
Michael Goulet 2024-06-14 14:46:32 -04:00
parent d5c48ebc71
commit 93ff86ed7c
44 changed files with 171 additions and 166 deletions
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12
compiler/rustc_trait_selection/src/traits/select/confirmation.rs
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@ -258,16 +258,16 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
) -> Vec<PredicateObligation<'tcx>> {
debug!(?obligation, ?has_nested, "confirm_builtin_candidate");
let lang_items = self.tcx().lang_items();
let tcx = self.tcx();
let obligations = if has_nested {
let trait_def = obligation.predicate.def_id();
let conditions = if Some(trait_def) == lang_items.sized_trait() {
let conditions = if tcx.is_lang_item(trait_def, LangItem::Sized) {
self.sized_conditions(obligation)
} else if Some(trait_def) == lang_items.copy_trait() {
} else if tcx.is_lang_item(trait_def, LangItem::Copy) {
self.copy_clone_conditions(obligation)
} else if Some(trait_def) == lang_items.clone_trait() {
} else if tcx.is_lang_item(trait_def, LangItem::Clone) {
self.copy_clone_conditions(obligation)
} else if Some(trait_def) == lang_items.fused_iterator_trait() {
} else if tcx.is_lang_item(trait_def, LangItem::FusedIterator) {
self.fused_iterator_conditions(obligation)
} else {
bug!("unexpected builtin trait {:?}", trait_def)
@ -1444,7 +1444,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
| ty::Foreign(_) => {}
// `ManuallyDrop` is trivially drop
ty::Adt(def, _) if Some(def.did()) == tcx.lang_items().manually_drop() => {}
ty::Adt(def, _) if def.is_manually_drop() => {}
// These types are built-in, so we can fast-track by registering
// nested predicates for their constituent type(s)