is an optional condition code.
This is a hint instruction. It is optional whether this instructionis implemented or not. If this instruction is not implemented, itexecutes as a
NOP. The assembler producesa diagnostic message if the instruction executes as a
NOP onthe target.
YIELD indicates to the hardwarethat the current thread is performing a task, for example a spinlock,that can be swapped out. Hardware can use this hint to suspend andresume threads in a multithreading system.
This instruction is available in A32 and T32.