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PMUL (vector)

Polynomial Multiply.


PMUL Vd.T, Vn.T, Vm.T


Is the name of the SIMD and FP destination register.
Is an arrangement specifier, and can be either 8B or 16B.
Is the name of the first SIMD and FP source register.
Is the name of the second SIMD and FP source register.


Polynomial Multiply. This instruction multiplies corresponding elements in the vectors of the two source SIMD and FP registers, places the results in a vector, and writes the vector to the destination SIMD and FP register.

For information about multiplying polynomials see Polynomial arithmetic over {0, 1} in the Arm® Architecture Reference Manual Arm®v8, for Arm®v8‑A architecture profile.

Depending on the settings in the CPACR_EL1, CPTR_EL2, and CPTR_EL3 registers, and the current Security state and Exception level, an attempt to execute the instruction might be trapped.