syntax_data: {"ast_node_type":"other","tokens":[{"end":34,"kind":"keyword","start":0,"text":"x27:"}]}
source_snippet:         x27: reg = ["x27", "w27"],
context_before:         x26: reg = ["x26", "w26"],
context_after:         x28: reg = ["x28", "w28"] % restricted_for_arm64ec,