SVE Instruction List by Dougall Johnson
See "SADDLB" in the exploration tools

SADDLB: Signed add long (bottom)

SADDLB Zd.H, Zn.B, Zm.B (SVE2 (SME
svint16_t svaddlb[_s16](svint8_t op1, svint8_t op2)

128-bit SVE

For each even signed 8-bit integer set the double-width (3) to (1) + (2).

256-bit SVE

For each even signed 8-bit integer set the double-width (3) to (1) + (2).

512-bit SVE

For each even signed 8-bit integer set the double-width (3) to (1) + (2).
Larger sizes

1024-bit SVE

For each even signed 8-bit integer set the double-width (3) to (1) + (2).

2048-bit SVE

For each even signed 8-bit integer set the double-width (3) to (1) + (2).
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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.