syntax_data: {"ast_node_type":"variable","tokens":[{"end":32,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let total = arg.layout.size;
context_before:     let align = arg.layout.align.abi.bytes();
context_after:     arg.cast_to(Uniform::consecutive(if align <= 4 { Reg::i32() } else { Reg::i64() }, total));