Rollup merge of rust-lang#80983 - bjorn3:no_dup_is_dllimport_foreign_item, r=nagisa

Remove is_dllimport_foreign_item definition from cg_ssa

It overwrites the definition from rustc_metadata.

cc https://rust-lang.zulipchat.com/#narrow/stream/182449-t-compiler.2Fhelp/topic/query.20provided.20twice/near/218927806

Marked as draft to test if this breaks anything.

Author: m-ou-se

compiler/rustc_codegen_ssa/src/base.rs

@@ -29,7 +29,6 @@ use rustc_middle::ty::query::Providers;
 use rustc_middle::ty::{self, Instance, Ty, TyCtxt};
 use rustc_session::cgu_reuse_tracker::CguReuse;
 use rustc_session::config::{self, EntryFnType};
-use rustc_session::utils::NativeLibKind;
 use rustc_session::Session;
 use rustc_target::abi::{Align, LayoutOf, VariantIdx};
 
@@ -817,32 +816,6 @@ pub fn provide_both(providers: &mut Providers) {
         }
         tcx.sess.opts.optimize
     };
-
-    providers.dllimport_foreign_items = |tcx, krate| {
-        let module_map = tcx.foreign_modules(krate);
-
-        let dllimports = tcx
-            .native_libraries(krate)
-            .iter()
-            .filter(|lib| {
-                if !matches!(lib.kind, NativeLibKind::Dylib | NativeLibKind::Unspecified) {
-                    return false;
-                }
-                let cfg = match lib.cfg {
-                    Some(ref cfg) => cfg,
-                    None => return true,
-                };
-                attr::cfg_matches(cfg, &tcx.sess.parse_sess, None)
-            })
-            .filter_map(|lib| lib.foreign_module)
-            .map(|id| &module_map[&id])
-            .flat_map(|module| module.foreign_items.iter().cloned())
-            .collect();
-        dllimports
-    };
-
-    providers.is_dllimport_foreign_item =
-        |tcx, def_id| tcx.dllimport_foreign_items(def_id.krate).contains(&def_id);
 }
 
 fn determine_cgu_reuse<'tcx>(tcx: TyCtxt<'tcx>, cgu: &CodegenUnit<'tcx>) -> CguReuse {

compiler/rustc_middle/src/query/mod.rs

@@ -1281,11 +1281,6 @@ rustc_queries! {
     }
 
     Other {
-        query dllimport_foreign_items(_: CrateNum)
-            -> FxHashSet<DefId> {
-            storage(ArenaCacheSelector<'tcx>)
-            desc { "dllimport_foreign_items" }
-        }
         query is_dllimport_foreign_item(def_id: DefId) -> bool {
             desc { |tcx| "is_dllimport_foreign_item({})", tcx.def_path_str(def_id) }
         }