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KXORB

Performs a bitwise logical XOR operation between a source operand and a destination operand, storing the result in the destination.

The following table covers what the source and destinations can be:

DO NOT support LOCK

This instruction is available only in 64-bit mode. It is NOT supported in compatibility mode.

When using a memory destination, the operation is performed on a 1-byte alignment. Failure to align memory accesses may result in performance degradation or alignment check exceptions if Alignment Check (AC) flag is set in CR0.