syntax_data: {"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"(\"hvx\","}]}
source_snippet:     ("hvx", Unstable(sym::hexagon_target_feature), &[]),
context_before:     // tidy-alphabetical-start
context_after:     ("hvx-length128b", Unstable(sym::hexagon_target_feature), &["hvx"]),