Syntax

VPADDL{cond}.datatype Qd, Qm

VPADDL{cond}.datatype Dd, Dm

where:

cond

is an optional condition code.

datatype

must be one of S8, S16, S32, U8, U16, or U32.

Qd, Qm

are the destination vector and the operand vector, for a quadword instruction.

Dd, Dm

are the destination vector and the operand vector, for a doubleword instruction.

Operation

VPADDL adds adjacent pairs of elements of a vector, sign or zero extends the results to twice their original width, and places the final results in the destination vector.

Figure 14-5 Example of operation of doubleword VPADDL (in this case, for data type S16)