syntax_data: {"ast_node_type":"variable","tokens":[{"end":31,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let size = arg.layout.size;
context_before:     let dl = cx.data_layout();
context_after:     let align = arg.layout.align.max(dl.i32_align).min(dl.i64_align).abi;