coverage: Don't use HIR to determine whether a def is fn-like

Author: Zalathar

compiler/rustc_mir_build/src/build/coverageinfo.rs

@@ -17,16 +17,14 @@ pub(crate) fn make_coverage_hir_info_if_eligible(
 }
 
 fn is_eligible_for_coverage(tcx: TyCtxt<'_>, def_id: LocalDefId) -> bool {
-    let is_fn_like = tcx.hir().get_by_def_id(def_id).fn_kind().is_some();
-
     // Only instrument functions, methods, and closures (not constants since they are evaluated
     // at compile time by Miri).
     // FIXME(#73156): Handle source code coverage in const eval, but note, if and when const
     // expressions get coverage spans, we will probably have to "carve out" space for const
     // expressions from coverage spans in enclosing MIR's, like we do for closures. (That might
     // be tricky if const expressions have no corresponding statements in the enclosing MIR.
     // Closures are carved out by their initial `Assign` statement.)
-    if !is_fn_like {
+    if !tcx.def_kind(def_id).is_fn_like() {
         return false;
     }