syntax_data: {"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // FIXME(f16_f128): When available, compare to the library parser as with `f32` and `f64`
context_before:     match float_ty {
context_after:         ty::FloatTy::F16 => {