create mode 100644 lib/std/special/compiler_rt/addo.zig
 create mode 100644 lib/std/special/compiler_rt/addodi4_test.zig
 create mode 100644 lib/std/special/compiler_rt/addosi4_test.zig
 create mode 100644 lib/std/special/compiler_rt/addoti4_test.zig