SVE Instruction List by Dougall Johnson
ADDQP: Add pairwise within quadword vector segments (unpredicated)
ADDQP Zd.B, Zn.B, Zm.B (SVE2.3 (SME2.3
128-bit SVE

Within each 128-bit segment, add adjacent pairs of 8-bit elements. Set the low half of each segment of (3) to the pairwise sums from (1), and the high half to the pairwise sums from (2).
256-bit SVE

Within each 128-bit segment, add adjacent pairs of 8-bit elements. Set the low half of each segment of (3) to the pairwise sums from (1), and the high half to the pairwise sums from (2).
512-bit SVE

Within each 128-bit segment, add adjacent pairs of 8-bit elements. Set the low half of each segment of (3) to the pairwise sums from (1), and the high half to the pairwise sums from (2).
Larger sizes
1024-bit SVE

Within each 128-bit segment, add adjacent pairs of 8-bit elements. Set the low half of each segment of (3) to the pairwise sums from (1), and the high half to the pairwise sums from (2).
2048-bit SVE

Within each 128-bit segment, add adjacent pairs of 8-bit elements. Set the low half of each segment of (3) to the pairwise sums from (1), and the high half to the pairwise sums from (2).
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.