AVX2-bit-manipulation

This is a library that allow bit manipulation that Intrinsics don't.

After testing I believe the the _mm256 left and right shift take 20 clock cycles

Working Intrinsics

Logical Left Shift

__m256i _mm256_lls_mm256(__m256i n, int32_t s)

• This left shifts an AVX register n by s number of bits
• The input are a __m256i and a int32_t

Errors codes

• 11 input was a negative number
• 9 Please contact me i have no idea what you did and this shouldn't be possible

Logical Right Shift

__m256i _mm256_lrs_mm256(__m256i n, int32_t s)

• This right shift an AVX register n by s number of bits
• The input are a __m256i and i int int32_t

Errors codes

• 11 input was a negative number
• 9 Please contact me i have no idea what you did and this shouldn't be possible

Rotate Left

__m256i _mm256_rotl_mm256(__m256i n, int32_t s)

• This rotate left an AVX register n by s number of bits
• The input are a __m256i and a int32_t
• if the input is 256 or larger this will return zero

Errors codes

• 11 input was a negative number
• 9 Please contact me i have no idea what you did and this shouldn't be possible

Backend Intrinsics

Backend Intrinsics

Logical Left Shift

_mm256_lls_mm256_helper(__m256i n, int32_t s)

• This left shifts an AVX register n by s number of bits up to 64
• The input are a __m256i and a int32_t

_mm256_lls_64(__m256i n)

• This left shifts an AVX register n by 64 bits
• The input is a __m256i

_mm256_lls_128(__m256i n)

• This left shifts an AVX register n by 128 bits
• The input is a __m256i

_mm256_lls_192(__m256i n)

• This left shifts an AVX register n by 192 bits
• The input is a __m256i

Logical Right Shift

_mm256_lrs_mm256_helper(__m256i n, int32_t s)

• This right shifts an AVX register n by s number of bits up to 64
• The input are a __m256i and a int32_t

_mm256_lrs_64(__m256i n)

• This right shifts an AVX register n by 64 bits
• The input is a __m256i

_mm256_lrs_128(__m256i n)

• This right shifts an AVX register n by 128 bits
• The input is a __m256i

_mm256_lrs_192(__m256i n)

• This right shifts an AVX register n by 192 bits
• The input is a __m256i

Benchmarking.txt contains all the testing i did while optimizing Left Shift