syntax_data: {"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                 if fn_abi.ret.layout.is_single_fp_element(cx) {
context_before:                 // float aggregates directly in a floating-point register.
context_after:                     match fn_abi.ret.layout.size.bytes() {