syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"llvm_mcount_intrinsic:"}]}
source_snippet:     llvm_mcount_intrinsic: Option<StaticCow<str>>,
context_before:     mcount: Option<StaticCow<str>>,
context_after:     llvm_abiname: Option<StaticCow<str>>,