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[libc++] Remove if-else to make branch predictor happy

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Reviewed By: #libc, ldionne, Quuxplusone, Mordante

Differential Revision: https://reviews.llvm.org/D100828
This commit is contained in:
Shu Tian 2021-04-24 16:08:55 +02:00 committed by Mark de Wever
parent 7255d1f54f
commit 7402ec8f38
1 changed files with 2 additions and 8 deletions
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10
libcxx/include/bitset
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@ -775,10 +775,7 @@ bitset<_Size>::bitset(const _CharT* __str,
for (; __i < _Mp; ++__i)
{
_CharT __c = __str[_Mp - 1 - __i];
if (__c == __zero)
(*this)[__i] = false;
else
(*this)[__i] = true;
(*this)[__i] = (__c == __one);
}
_VSTD::fill(base::__make_iter(__i), base::__make_iter(_Size), false);
}
@ -803,10 +800,7 @@ bitset<_Size>::bitset(const basic_string<_CharT,_Traits,_Allocator>& __str,
for (; __i < _Mp; ++__i)
{
_CharT __c = __str[__pos + _Mp - 1 - __i];
if (_Traits::eq(__c, __zero))
(*this)[__i] = false;
else
(*this)[__i] = true;
(*this)[__i] = _Traits::eq(__c, __one);
}
_VSTD::fill(base::__make_iter(__i), base::__make_iter(_Size), false);
}