syntax_data: {"ast_node_type":"other","tokens":[{"end":34,"kind":"keyword","start":0,"text":"#error"}]}
source_snippet:         #error = ["x19", "w19"] =>
context_before:         ffr: preg = ["ffr"] % restricted_for_arm64ec,
context_after:             "x19 is used internally by LLVM and cannot be used as an operand for inline asm",