See "SQDMULLB (indexed)" in the exploration tools

SQDMULLB (indexed): Signed saturating doubling multiply long (bottom, indexed)

SQDMULLB Zd.S, Zn.H, Zm.H[imm] (SVE2 (SME

svint32_t svqdmullb_lane[_s32](svint16_t op1, svint16_t op2, uint64_t imm_index)

128-bit SVE

For each even signed 16-bit integer set the double-width (3) to (1) * (2) << 1, with signed saturation to 0x7FFFFFFF. Within each 128-bit segment, the value used from (1) is specified by imm.

256-bit SVE

For each even signed 16-bit integer set the double-width (3) to (1) * (2) << 1, with signed saturation to 0x7FFFFFFF. Within each 128-bit segment, the value used from (1) is specified by imm.

512-bit SVE

For each even signed 16-bit integer set the double-width (3) to (1) * (2) << 1, with signed saturation to 0x7FFFFFFF. Within each 128-bit segment, the value used from (1) is specified by imm.

Larger sizes

1024-bit SVE

For each even signed 16-bit integer set the double-width (3) to (1) * (2) << 1, with signed saturation to 0x7FFFFFFF. Within each 128-bit segment, the value used from (1) is specified by imm.

2048-bit SVE

For each even signed 16-bit integer set the double-width (3) to (1) * (2) << 1, with signed saturation to 0x7FFFFFFF. Within each 128-bit segment, the value used from (1) is specified by imm.

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