VPCMPQ - Packed CoMPare Qword (imm8=2)

VPCMPQ k1{k2}, xmm2, xmm3/m128/m64bcst, 2    (V5+VL
__mmask8 _mm_cmple_epi64_mask(__m128i a, __m128i b)
__mmask8 _mm_mask_cmple_epi64_mask(__mmask8 k2, __m128i a, __m128i b)

For each signed QWORD, 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.
VPCMPQ k1{k2}, ymm2, ymm3/m256/m64bcst, 2    (V5+VL
__mmask8 _mm256_cmple_epi64_mask(__m256i a, __m256i b)
__mmask8 _mm256_mask_cmple_epi64_mask(__mmask8 k2, __m256i a, __m256i b)

For each signed QWORD, 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.
VPCMPQ k1{k2}, zmm2, zmm3/m512/m64bcst, 2    (V5
__mmask8 _mm512_cmple_epi64_mask(__m512i a, __m512i b)
__mmask8 _mm512_mask_cmple_epi64_mask(__mmask8 k2, __m512i a, __m512i b)

For each signed QWORD, 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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