create mode 100644 lib/std/special/compiler_rt/popcount.zig
 delete mode 100644 lib/std/special/compiler_rt/popcountdi2.zig
 create mode 100644 lib/std/special/compiler_rt/popcountsi2_test.zig
 create mode 100644 lib/std/special/compiler_rt/popcountti2_test.zig