UZPQ1: Concatenate even elements within each pair of quadword vector segments

UZPQ1 Zd.D, Zn.D, Zm.D (SVE2.1 (SME2.1

128-bit SVE

Within each 128-bit segment, set the low half of the segment in (3) to the even 64-bit elements from (1), and the high half of the segment in (3) to the even 64-bit elements from (2).

256-bit SVE

Within each 128-bit segment, set the low half of the segment in (3) to the even 64-bit elements from (1), and the high half of the segment in (3) to the even 64-bit elements from (2).

512-bit SVE

Within each 128-bit segment, set the low half of the segment in (3) to the even 64-bit elements from (1), and the high half of the segment in (3) to the even 64-bit elements from (2).

Larger sizes

1024-bit SVE

Within each 128-bit segment, set the low half of the segment in (3) to the even 64-bit elements from (1), and the high half of the segment in (3) to the even 64-bit elements from (2).

2048-bit SVE

Within each 128-bit segment, set the low half of the segment in (3) to the even 64-bit elements from (1), and the high half of the segment in (3) to the even 64-bit elements from (2).

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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.