See "UMLALT (indexed)" in the exploration tools

UMLALT (indexed): Unsigned multiply-add long to accumulator (top, indexed)

UMLALT Zda.D, Zn.S, Zm.S[imm] (SVE2 (SME

svuint64_t svmlalt_lane[_u64](svuint64_t op1, svuint32_t op2, svuint32_t op3, uint64_t imm_index)

128-bit SVE

Multiply each odd unsigned 32-bit integer from (2), with the unsigned 32-bit integer specified by imm from (1), then add this to the 64-bit integer from (3), and set (4) to the result.

256-bit SVE

Multiply each odd unsigned 32-bit integer from (2), with the unsigned 32-bit integer specified by imm from (1), then add this to the 64-bit integer from (3), and set (4) to the result.

512-bit SVE

Multiply each odd unsigned 32-bit integer from (2), with the unsigned 32-bit integer specified by imm from (1), then add this to the 64-bit integer from (3), and set (4) to the result.

Larger sizes

1024-bit SVE

Multiply each odd unsigned 32-bit integer from (2), with the unsigned 32-bit integer specified by imm from (1), then add this to the 64-bit integer from (3), and set (4) to the result.

2048-bit SVE

Multiply each odd unsigned 32-bit integer from (2), with the unsigned 32-bit integer specified by imm from (1), then add this to the 64-bit integer from (3), and set (4) to the result.

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