Reference:
https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software...
page "Vol. 2A 3-543".
The line marked with ?---> omits usage of the "DEST" operand.
IF BranchCond = 1
THEN
IF OperandSize = 32
THEN EIP ← EIP + SignExtend(DEST);
ELSE IF OperandSize = 64
THEN RIP ← RIP + SignExtend(DEST);
FI;
ELSE IF OperandSize = 16
?---> THEN EIP ← EIP AND 0000FFFFH;
FI;
FI;
IF OperandSize = (32 or 64)
THEN IF (R/E)IP < CS.Base or (R/E)IP > CS.Limit
#GP; FI;
FI;
FI;
ELSE
Terminate loop and continue program execution at (R/E)IP;
FI;
https://stackoverflow.com/q/71164945/471129
