remove unused field from VariantDef::new and convert debug to instrument

compiler/rustc_hir_analysis/src/collect.rs

@@ -1075,7 +1075,6 @@ fn lower_variant<'tcx>(
         def.ctor().map(|(kind, _, def_id)| (kind, def_id.to_def_id())),
         discr,
         fields,
-        adt_kind,
         parent_did.to_def_id(),
         recovered,
         adt_kind == AdtKind::Struct && tcx.has_attr(parent_did, sym::non_exhaustive)

compiler/rustc_metadata/src/rmeta/decoder.rs

@@ -1118,7 +1118,6 @@ impl<'a> CrateMetadataRef<'a> {
                         value: self.get_default_field(did.index),
                     })
                     .collect(),
-                adt_kind,
                 parent_did,
                 None,
                 data.is_non_exhaustive,

compiler/rustc_middle/src/ty/mod.rs

@@ -1183,23 +1183,17 @@ impl VariantDef {
     ///
     /// If someone speeds up attribute loading to not be a performance concern, they can
     /// remove this hack and use the constructor `DefId` everywhere.
+    #[instrument(level = "debug")]
     pub fn new(
         name: Symbol,
         variant_did: Option<DefId>,
         ctor: Option<(CtorKind, DefId)>,
         discr: VariantDiscr,
         fields: IndexVec<FieldIdx, FieldDef>,
-        adt_kind: AdtKind,
         parent_did: DefId,
         recover_tainted: Option<ErrorGuaranteed>,
         is_field_list_non_exhaustive: bool,
     ) -> Self {
-        debug!(
-            "VariantDef::new(name = {:?}, variant_did = {:?}, ctor = {:?}, discr = {:?},
-             fields = {:?}, adt_kind = {:?}, parent_did = {:?})",
-            name, variant_did, ctor, discr, fields, adt_kind, parent_did,
-        );
-
         let mut flags = VariantFlags::NO_VARIANT_FLAGS;
         if is_field_list_non_exhaustive {
             flags |= VariantFlags::IS_FIELD_LIST_NON_EXHAUSTIVE;