Function __tile_dpbusd 

pub unsafe fn __tile_dpbusd(
    dst: *mut __tile1024i,
    a: __tile1024i,
    b: __tile1024i,
)

🔬This is a nightly-only experimental API. (x86_amx_intrinsics #126622)

Available on x86-64 and target feature amx-int8 only.

Compute dot-product of bytes in tiles with a source/destination accumulator. Multiply groups of 4 adjacent pairs of unsigned 8-bit integers in a with corresponding signed 8-bit integers in b, producing 4 intermediate 32-bit results. Sum these 4 results with the corresponding 32-bit integer in dst, and store the 32-bit result back to tile dst. The shape of the tile is specified in the struct of __tile1024i. The register of the tile is allocated by the compiler.

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