syntax_data: {"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"r14:"}]}
source_snippet:         r14: reg = ["r14", "r14w", "r14d"] % x86_64_only,
context_before:         r13: reg = ["r13", "r13w", "r13d"] % x86_64_only,
context_after:         r15: reg = ["r15", "r15w", "r15d"] % x86_64_only,