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ADCX

Adds the operand and the carry flag (CF) to the destination register.

The following table describes the supported source and destination operands.

DO NOT support LOCK

ADCX is supported only in 64-bit mode. It is NOT supported in compatibility mode.

The instruction does NOT affect the Overflow Flag (OF), SF, ZF, AF, or PF. It only updates the Carry Flag (CF).

To avoid performance degradation or incorrect results in multi-precision arithmetic, the user SHOULD pair ADCX with ADCOX. Because ADCX does not modify the Overflow Flag, it allows the processor to execute multiple additions in parallel without creating a dependency chain on the OF flag.