VCLS (Vector Count Leading Sign bits) counts
the number of consecutive bits following the topmost bit, that are
the same as the topmost bit, in each element in a vector, and places
the results in a second vector.
VCLZ (Vector Count Leading Zeros) 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.
VCNT (Vector Count set bits) counts the number
of bits that are one in each element in a vector, and places the
results in a second vector.
SyntaxVop{cond}.datatypeQd,Qm
Vop{cond}.datatypeDd,Dm
where:
opmust be one of
CLS,CLZ, orCNT.condis an optional condition code.
datatypemust be one of:
S8,S16, orS32forCLS.I8,I16, orI32forCLZ.I8forCNT.
Qd,Qmare the destination vector and the operand vector, for a quadword operation.
Dd,Dmare the destination vector and the operand vector, for a doubleword operation.
- Reference:
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