Filter instances of intrinsic/item kind

Author: adpaco-aws

compiler/rustc_smir/src/rustc_smir/context.rs

@@ -594,8 +594,13 @@ impl<'tcx> Context for TablesWrapper<'tcx> {
     fn intrinsic_name(&self, def: InstanceDef) -> Option<Symbol> {
         let tables = self.0.borrow_mut();
         let instance = tables.instances[def];
-        let name = tables.tcx.intrinsic(instance.def_id())?;
-        Some(name.to_string())
+        if !(matches!(instance.def, ty::InstanceDef::Intrinsic(..))
+            || matches!(instance.def, ty::InstanceDef::Item(..)))
+        {
+            return None;
+        }
+        let intrinsic = tables.tcx.intrinsic(instance.def_id())?;
+        Some(intrinsic.name.to_string())
     }
 
     fn ty_layout(&self, ty: Ty) -> Result<Layout, Error> {