{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"fx.bcx.ins().iconst(types::I64,"}]}
                    fx.bcx.ins().iconst(types::I64, i64::from(untagged_variant.as_u32()));
                let untagged_variant =
                fx.bcx.ins().iconcat(untagged_variant, zero)