Comments (1)
Solved in 54b5603, but it may be possible to further reduce the latency for frequent patterns. For that we need a more efficient way to initialize the off and even columns of the bitmap, analogous to the LOAD2 instruction on Arm:
filter_even_vec.zmm = _mm512_broadcast_i32x4(_mm256_castsi256_si128(_mm256_maskz_compress_epi8(0x55555555, filter_ymm)));
filter_odd_vec.zmm = _mm512_broadcast_i32x4(_mm256_castsi256_si128(_mm256_maskz_compress_epi8(0xaaaaaaaa, filter_ymm)));
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