syntax_data: {"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"BackendRepr::Scalar(_)"}]}
source_snippet:                     BackendRepr::Scalar(_) | BackendRepr::SimdVector { .. } => {}
context_before:                 match arg.layout.backend_repr {
context_after:                     BackendRepr::ScalarPair(..) => {