SVE Instruction List by Dougall Johnson
See "BFMLALT (vectors)" in the exploration tools

BFMLALT (vectors): BFloat16 floating-point multiply-add long to single-precision (top)

BFMLALT Zda.S, Zn.H, Zm.H (SVE+BF16 (SME+BF16
svfloat32_t svbfmlalt[_f32](svfloat32_t op1, svbfloat16_t op2, svbfloat16_t op3)

128-bit SVE

For each odd BFloat16 float calculate (1) * (2), and add that to the 32-bit float from (3), then set (4) to the result.

256-bit SVE

For each odd BFloat16 float calculate (1) * (2), and add that to the 32-bit float from (3), then set (4) to the result.

512-bit SVE

For each odd BFloat16 float calculate (1) * (2), and add that to the 32-bit float from (3), then set (4) to the result.

Larger sizes

1024-bit SVE

For each odd BFloat16 float calculate (1) * (2), and add that to the 32-bit float from (3), then set (4) to the result.

2048-bit SVE

For each odd BFloat16 float calculate (1) * (2), and add that to the 32-bit float from (3), then set (4) to the result.

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