few more

compiler/rustc_const_eval/src/transform/promote_consts.rs

@@ -1023,36 +1023,3 @@ pub fn promote_candidates<'tcx>(
 
     promotions
 }
-
-/// This function returns `true` if the function being called in the array
-/// repeat expression is a `const` function.
-pub fn is_const_fn_in_array_repeat_expression<'tcx>(
-    ccx: &ConstCx<'_, 'tcx>,
-    place: &Place<'tcx>,
-    body: &Body<'tcx>,
-) -> bool {
-    match place.as_local() {
-        // rule out cases such as: `let my_var = some_fn(); [my_var; N]`
-        Some(local) if body.local_decls[local].is_user_variable() => return false,
-        None => return false,
-        _ => {}
-    }
-
-    for block in body.basic_blocks.iter() {
-        if let Some(Terminator { kind: TerminatorKind::Call { func, destination, .. }, .. }) =
-            &block.terminator
-        {
-            if let Operand::Constant(box ConstOperand { const_, .. }) = func {
-                if let ty::FnDef(def_id, _) = *const_.ty().kind() {
-                    if destination == place {
-                        if ccx.tcx.is_const_fn(def_id) {
-                            return true;
-                        }
-                    }
-                }
-            }
-        }
-    }
-
-    false
-}

compiler/rustc_middle/src/ty/mod.rs

@@ -42,7 +42,6 @@ use rustc_errors::{DiagnosticBuilder, ErrorGuaranteed, StashKey};
 use rustc_hir as hir;
 use rustc_hir::def::{CtorKind, CtorOf, DefKind, DocLinkResMap, LifetimeRes, Res};
 use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, LocalDefId, LocalDefIdMap};
-use rustc_hir::Node;
 use rustc_index::IndexVec;
 use rustc_macros::HashStable;
 use rustc_query_system::ich::StableHashingContext;
@@ -2513,22 +2512,6 @@ impl<'tcx> TyCtxt<'tcx> {
     }
 }
 
-/// Yields the parent function's `LocalDefId` if `def_id` is an `impl Trait` definition.
-pub fn is_impl_trait_defn(tcx: TyCtxt<'_>, def_id: DefId) -> Option<LocalDefId> {
-    let def_id = def_id.as_local()?;
-    if let Node::Item(item) = tcx.hir().get_by_def_id(def_id) {
-        if let hir::ItemKind::OpaqueTy(opaque_ty) = item.kind {
-            return match opaque_ty.origin {
-                hir::OpaqueTyOrigin::FnReturn(parent) | hir::OpaqueTyOrigin::AsyncFn(parent) => {
-                    Some(parent)
-                }
-                hir::OpaqueTyOrigin::TyAlias { .. } => None,
-            };
-        }
-    }
-    None
-}
-
 pub fn int_ty(ity: ast::IntTy) -> IntTy {
     match ity {
         ast::IntTy::Isize => IntTy::Isize,

compiler/rustc_trait_selection/src/traits/coherence.rs

@@ -330,6 +330,7 @@ fn equate_impl_headers<'tcx>(
                 impl1.self_ty,
                 impl2.self_ty,
             ),
+            // FIXME: mk_eq_impl_headers fn not exist
             _ => bug!("mk_eq_impl_headers given mismatched impl kinds"),
         };