Lower the assume intrinsic to a MIR statement

compiler/rustc_mir_dataflow/src/impls/liveness.rs

@@ -271,6 +271,7 @@ impl<'a, 'tcx> Analysis<'tcx> for MaybeTransitiveLiveLocals<'a> {
             | StatementKind::AscribeUserType(..)
             | StatementKind::Coverage(..)
             | StatementKind::CopyNonOverlapping(..)
+            | StatementKind::Assume(..)
             | StatementKind::Nop => None,
         };
         if let Some(destination) = destination {