VPTESTMB - Packed TEST Mask Byte

VPTESTMB k1{k2}, xmm2, xmm3/m128    (V5+BW+VL
__mmask16 _mm_test_epi8_mask(__m128i a, __m128i b)
__mmask16 _mm_mask_test_epi8_mask(__mmask16 k2, __m128i a, __m128i b)

For each BYTE, calculate bitwise (1) & (2), if any bit of the result is 1, set 1, else set 0, to the corresponding bit of (3).
If k2 bit is 0, the calculation is not done and the corresponding bit of (3) is set to zero. Upper bits of (3) are zero cleared.
VPTESTMB k1{k2}, ymm2, ymm3/m256    (V5+BW+VL
__mmask32 _mm256_test_epi8_mask(__m256i a, __m256i b)
__mmask32 _mm256_mask_test_epi8_mask(__mmask32 k2, __m256i a, __m256i b)

For each BYTE, calculate bitwise (1) & (2), if any bit of the result is 1, set 1, else set 0, to the corresponding bit of (3).
If k2 bit is 0, the calculation is not done and the corresponding bit of (3) is set to zero. Upper bits of (3) are zero cleared.
VPTESTMB k1{k2}, zmm2, zmm3/m512    (V5+BW
__mmask64 _mm512_test_epi8_mask(__m512i a, __m512i b)
__mmask64 _mm512_mask_test_epi8_mask(__mmask64 k2, __m512i a, __m512i b)

For each BYTE, calculate bitwise (1) & (2), if any bit of the result is 1, set 1, else set 0, to the corresponding bit of (3).
If k2 bit is 0, the calculation is not done and the corresponding bit of (3) is set to zero. Upper bits of (3) are zero cleared.
x86/x64 SIMD Instruction List  Feedback