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[libc][__support][bit] remove compiler has builtin checks #81679

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Merged
merged 1 commit into from
Feb 14, 2024
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[libc][__support][bit] remove compiler has builtin checks #81679

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18 changes: 0 additions & 18 deletions libc/src/__support/CPP/bit.h
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Original file line number Diff line number Diff line change
Expand Up @@ -93,15 +93,9 @@ template <typename T, typename = cpp::enable_if_t<cpp::is_unsigned_v<T>>>
#if LIBC_HAS_BUILTIN(__builtin_ctzs)
ADD_SPECIALIZATION(countr_zero, unsigned short, __builtin_ctzs)
#endif
#if LIBC_HAS_BUILTIN(__builtin_ctz)
ADD_SPECIALIZATION(countr_zero, unsigned int, __builtin_ctz)
#endif
#if LIBC_HAS_BUILTIN(__builtin_ctzl)
ADD_SPECIALIZATION(countr_zero, unsigned long, __builtin_ctzl)
#endif
#if LIBC_HAS_BUILTIN(__builtin_ctzll)
ADD_SPECIALIZATION(countr_zero, unsigned long long, __builtin_ctzll)
#endif

/// Count number of 0's from the most significant bit to the least
/// stopping at the first 1.
Expand All @@ -128,15 +122,9 @@ template <typename T, typename = cpp::enable_if_t<cpp::is_unsigned_v<T>>>
#if LIBC_HAS_BUILTIN(__builtin_clzs)
ADD_SPECIALIZATION(countl_zero, unsigned short, __builtin_clzs)
#endif
#if LIBC_HAS_BUILTIN(__builtin_clz)
ADD_SPECIALIZATION(countl_zero, unsigned int, __builtin_clz)
#endif
#if LIBC_HAS_BUILTIN(__builtin_clzl)
ADD_SPECIALIZATION(countl_zero, unsigned long, __builtin_clzl)
#endif
#if LIBC_HAS_BUILTIN(__builtin_clzll)
ADD_SPECIALIZATION(countl_zero, unsigned long long, __builtin_clzll)
#endif

#undef ADD_SPECIALIZATION

Expand Down Expand Up @@ -256,15 +244,9 @@ template <typename T, typename = cpp::enable_if_t<cpp::is_unsigned_v<T>>>
#if LIBC_HAS_BUILTIN(__builtin_clzs)
SPECIALIZE_FLZ(first_leading_zero, unsigned short, __builtin_clzs)
#endif
#if LIBC_HAS_BUILTIN(__builtin_clz)
SPECIALIZE_FLZ(first_leading_zero, unsigned int, __builtin_clz)
#endif
#if LIBC_HAS_BUILTIN(__builtin_clzl)
SPECIALIZE_FLZ(first_leading_zero, unsigned long, __builtin_clzl)
#endif
#if LIBC_HAS_BUILTIN(__builtin_clzll)
SPECIALIZE_FLZ(first_leading_zero, unsigned long long, __builtin_clzll)
#endif

#undef SPECIALIZE_FLZ

Expand Down