{"ast_node_type":"variable","tokens":[{"end":60,"kind":"keyword","start":0,"text":"let"}]}
    let (max_regs, reg_count, reg_save_index, reg_padding) =
    let gpr_type = indirect || !layout.is_single_fp_element(bx.cx);
        if gpr_type { (5, gpr, 2, padding) } else { (4, fpr, 16, 0) };