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ARM Compiler armasm User Guide : VCLZ

VCLZ

Vector Count Leading Zeros.

Syntax

VCLZ{cond}.datatype Qd, Qm

VCLZ{cond}.datatype Dd, Dm

where:

cond

is an optional condition code.

datatype

must be one of I8, I16, or I32.

Qd, Qm

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

Dd, Dm

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

Operation

VCLZ counts the number of consecutive zeros, starting from the top bit, in each element in a vector, and places the results in a second vector.

Related reference

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