Also add a skip in MIR_borrow_checking

Author: saethlin

compiler/rustc_interface/src/passes.rs

@@ -1088,6 +1088,9 @@ fn run_required_analyses(tcx: TyCtxt<'_>) {
 
     sess.time("MIR_borrow_checking", || {
         tcx.par_hir_body_owners(|def_id| {
+            if tcx.is_trivial_const(def_id).is_some() {
+                return;
+            }
             if !tcx.is_typeck_child(def_id.to_def_id()) {
                 // Child unsafety and borrowck happens together with the parent
                 tcx.ensure_ok().check_unsafety(def_id);

compiler/rustc_mir_transform/src/lib.rs

@@ -542,6 +542,9 @@ fn inner_mir_for_ctfe(tcx: TyCtxt<'_>, def: LocalDefId) -> Body<'_> {
 /// mir borrowck *before* doing so in order to ensure that borrowck can be run and doesn't
 /// end up missing the source MIR due to stealing happening.
 fn mir_drops_elaborated_and_const_checked(tcx: TyCtxt<'_>, def: LocalDefId) -> &Steal<Body<'_>> {
+    if tcx.is_trivial_const(def).is_some() {
+        panic!("Tried to get mir_for_ctfe of a trivial const");
+    }
     if tcx.is_coroutine(def.to_def_id()) {
         tcx.ensure_done().mir_coroutine_witnesses(def);
     }