syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"8"}]}
source_snippet:                         8 => fn_abi.ret.cast_to(Reg::f64()),
context_before:                         4 => fn_abi.ret.cast_to(Reg::f32()),
context_after:                         _ => fn_abi.ret.make_indirect(),