syntax_data: {"ast_node_type":"other","tokens":[{"end":24,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if regparm > 3 {
context_before:     if let Some(regparm) = sess.opts.unstable_opts.regparm {
context_after:             sess.dcx().emit_err(errors::UnsupportedRegparm { regparm });