UMOPA (2-way)

Unsigned integer sum of outer products and accumulate

This instruction works with a 32-bit element ZA tile.

The unsigned integer sum of outer products and accumulate instructions multiply the sub-matrix in the first source vector by the sub-matrix in the second source vector. The first source holds SVL_S×2 sub-matrix of unsigned 16-bit integer values, and the second source holds 2×SVL_S sub-matrix of unsigned 16-bit integer values.

Each source vector is independently predicated by a corresponding governing predicate. When a 16-bit source element is inactive, it is treated as having the value 0.

The resulting SVL_S×SVL_S widened 32-bit integer sum of outer products is then destructively added to the 32-bit integer destination tile. This is equivalent to performing a 2-way dot product and accumulate to each of the destination tile elements.

Each 32-bit container of the first source vector holds 2 consecutive column elements of each row of a SVL_S×2 sub-matrix, and each 32-bit container of the second source vector holds 2 consecutive row elements of each column of a 2×SVL_S sub-matrix.

SME2
(FEAT_SME2)

if !HaveSME2() then UNDEFINED; constant integer esize = 32; integer a = UInt(Pn); integer b = UInt(Pm); integer n = UInt(Zn); integer m = UInt(Zm); integer da = UInt(ZAda); boolean sub_op = FALSE; boolean unsigned = TRUE;