16.60 CSEL

Conditional Select.

Syntax

CSEL Wd, Wn, Wm, cond ; 32-bit

CSEL Xd, Xn, Xm, cond ; 64-bit

Where:

Wd
Is the 32-bit name of the general-purpose destination register.
Wn
Is the 32-bit name of the first general-purpose source register.
Wm
Is the 32-bit name of the second general-purpose source register.
Xd
Is the 64-bit name of the general-purpose destination register.
Xn
Is the 64-bit name of the first general-purpose source register.
Xm
Is the 64-bit name of the second general-purpose source register.
cond
Is one of the standard conditions.

Operation

Conditional Select returns, in the destination register, the value of the first source register if the condition is TRUE, and otherwise returns the value of the second source register.

Rd = if cond then Rn else Rm, where R is either W or X.

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