syntax_data: {"ast_node_type":"other","tokens":[{"end":151,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // See also: <https://developer.apple.com/documentation/xcode/writing-arm64-code-for-apple-platforms#Pass-Arguments-to-Functions-Correctly>
context_before:             // and likewise a u8/u16 must be zero-extended to 32-bits.
context_after:             arg.extend_integer_width_to(32);