Adjust imports

compiler/rustc_mir/src/monomorphize/polymorphize.rs

@@ -5,7 +5,7 @@
 //! generic parameters are unused (and eventually, in what ways generic parameters are used - only
 //! for their size, offset of a field, etc.).
 
-use rustc_hir::{def::DefKind, def_id::DefId};
+use rustc_hir::{def::DefKind, def_id::DefId, ConstContext};
 use rustc_index::bit_set::FiniteBitSet;
 use rustc_middle::mir::{
     visit::{TyContext, Visitor},
@@ -56,7 +56,7 @@ fn unused_generic_params(tcx: TyCtxt<'_>, def_id: DefId) -> FiniteBitSet<u32> {
     // Exit early when there is no MIR available.
     let context = tcx.hir().body_const_context(def_id.expect_local());
     match context {
-        Some(ConstContext::Fn) | None if !tcx.is_mir_available(def_id) => {
+        Some(ConstContext::ConstFn) | None if !tcx.is_mir_available(def_id) => {
             debug!("unused_generic_params: (no mir available) def_id={:?}", def_id);
             return FiniteBitSet::new_empty();
         }
@@ -80,7 +80,7 @@ fn unused_generic_params(tcx: TyCtxt<'_>, def_id: DefId) -> FiniteBitSet<u32> {
     let body = match context {
         // Const functions are actually called and should thus be considered for polymorphization
         // via their runtime MIR
-        Some(ConstContext::Fn) | None => tcx.optimized_mir(def_id),
+        Some(ConstContext::ConstFn) | None => tcx.optimized_mir(def_id),
         Some(_) => tcx.mir_for_ctfe(def_id),
     };
     let mut vis = MarkUsedGenericParams { tcx, def_id, unused_parameters: &mut unused_parameters };