bjoernager/rust
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add subst_identity_iter and subst_identity_iter_copied methods on EarlyBinder; use this to simplify some EarlyBinder noise around explicit_item_bounds calls

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This commit is contained in:
Kyle Matsuda 2023-04-17 17:19:08 -06:00
parent f3b279fcc5
commit e54854f6a9
12 changed files with 43 additions and 50 deletions
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3
compiler/rustc_hir_analysis/src/variance/mod.rs
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@ -153,8 +153,7 @@ fn variance_of_opaque(tcx: TyCtxt<'_>, item_def_id: LocalDefId) -> &[ty::Varianc
let mut collector =
OpaqueTypeLifetimeCollector { tcx, root_def_id: item_def_id.to_def_id(), variances };
let id_substs = ty::InternalSubsts::identity_for_item(tcx, item_def_id);
for pred in tcx.explicit_item_bounds(item_def_id).transpose_iter() {
let pred = pred.map_bound(|(pred, _)| *pred).subst(tcx, id_substs);
for (pred, _) in tcx.explicit_item_bounds(item_def_id).subst_iter_copied(tcx, id_substs) {
debug!(?pred);
// We only ignore opaque type substs if the opaque type is the outermost type.