VPCMPUW - Packed CoMPare Unsigned Word (imm8=0)

VPCMPUW k1{k2}, xmm2, xmm3/m128, 0    (V5+BW+VL
__mmask8 _mm_cmpeq_epu16_mask(__m128i a, __m128i b)
__mmask8 _mm_mask_cmpeq_epu16_mask(__mmask8 k2, __m128i a, __m128i b)

For each unsigned WORD, if (1) == (2) set 1, else set 0, to the corresponding bit of (3).
If k2 bit is 0, the comparison is not done and the corresponding bit of (3) is set to zero. Upper bits of (3) are zero cleared.
VPCMPUW k1{k2}, ymm2, ymm3/m256, 0    (V5+BW+VL
__mmask16 _mm256_cmpeq_epu16_mask(__m256i a, __m256i b)
__mmask16 _mm256_mask_cmpeq_epu16_mask(__mmask16 k2, __m256i a, __m256i b)

For each unsigned WORD, if (1) == (2) set 1, else set 0, to the corresponding bit of (3).
If k2 bit is 0, the comparison is not done and the corresponding bit of (3) is set to zero. Upper bits of (3) are zero cleared.
VPCMPUW k1{k2}, zmm2, zmm3/m512, 0    (V5+BW
__mmask32 _mm512_cmpeq_epu16_mask(__m512i a, __m512i b)
__mmask32 _mm512_mask_cmpeq_epu16_mask(__mmask32 k2, __m512i a, __m512i b)

For each unsigned WORD, if (1) == (2) set 1, else set 0, to the corresponding bit of (3).
If k2 bit is 0, the comparison is not done and the corresponding bit of (3) is set to zero. Upper bits of (3) are zero cleared.
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