diff options
Diffstat (limited to 'lib/Headers/bmiintrin.h')
| -rw-r--r-- | lib/Headers/bmiintrin.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/Headers/bmiintrin.h b/lib/Headers/bmiintrin.h index 43c4a5e5de3c0..0e5fd5551fb3f 100644 --- a/lib/Headers/bmiintrin.h +++ b/lib/Headers/bmiintrin.h @@ -43,7 +43,7 @@ static __inline__ unsigned short __attribute__((__always_inline__, __nodebug__)) __tzcnt_u16(unsigned short __X) { - return __builtin_ctzs(__X); + return __X ? __builtin_ctzs(__X) : 16; } static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__)) @@ -87,7 +87,7 @@ __blsr_u32(unsigned int __X) static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__)) __tzcnt_u32(unsigned int __X) { - return __builtin_ctz(__X); + return __X ? __builtin_ctz(__X) : 32; } #ifdef __x86_64__ @@ -140,7 +140,7 @@ __blsr_u64(unsigned long long __X) static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__)) __tzcnt_u64(unsigned long long __X) { - return __builtin_ctzll(__X); + return __X ? __builtin_ctzll(__X) : 64; } #endif /* __x86_64__ */ |