2 ms·
Because the function is not quite correct. It should be return n ? (1u + popcount(n & n - 1u)) : 0u; which both Clang and GCC promptly optimize to a sing
by pbsd 10mo ago
Because the function is not quite correct. It should be
return n ? (1u + popcount(n & n - 1u)) : 0u;
which both Clang and GCC promptly optimize to a single popcnt.
- 1718627440 10mo agoThere should be testsuites, which are based on testing which compilation passes the compiler chose.