syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"offset_from_start,"}]}
source_snippet:                             offset_from_start,
context_before:                         *field2_kind = RegPassKind::Integer {
context_after:                             ty: Reg { kind: RegKind::Integer, size: arg_layout.size },