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libstdc++: Remove redundant check for zero in std::__popcount

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The popcount built-ins work fine for zero, so there's no need to check
for it.

libstdc++-v3/ChangeLog:

	* include/std/bit (__popcount): Remove redundant check for zero.
This commit is contained in:
Jonathan Wakely
2020-11-09 14:31:13 +00:00
parent 96f315213f
commit ff4bfb1553
1 changed files with 0 additions and 3 deletions
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libstdc++-v3/include/std/bit
-3
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@@ -184,9 +184,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __gnu_cxx::__int_traits;
constexpr auto _Nd = __int_traits<_Tp>::__digits;
if (__x == 0)
return 0;
constexpr auto _Nd_ull = __int_traits<unsigned long long>::__digits;
constexpr auto _Nd_ul = __int_traits<unsigned long>::__digits;
constexpr auto _Nd_u = __int_traits<unsigned>::__digits;