syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"(\"power9-altivec\","}]}
source_snippet:     ("power9-altivec", Unstable(sym::powerpc_target_feature), &["power8-altivec"]),
context_before:     ("power8-vector", Unstable(sym::powerpc_target_feature), &["vsx", "power8-altivec"]),
context_after:     ("power9-vector", Unstable(sym::powerpc_target_feature), &["power8-vector", "power9-altivec"]),