AsyncDrop implementation using shim codegen of async_drop_in_place::{closure}, scoped async drop added.

compiler/rustc_mir_dataflow/src/value_analysis.rs

@@ -405,6 +405,9 @@ impl<'tcx> Map<'tcx> {
             if exclude.contains(local) {
                 continue;
             }
+            if decl.ty.is_async_drop_in_place_coroutine(tcx) {
+                continue;
+            }
 
             // Create a place for the local.
             debug_assert!(self.locals[local].is_none());