B.18. Miscellaneous instructions

Table B.23 shows the cycle timing behavior for If-Then (IT) and No OPeration (NOP) instructions.

Table B.23. IT and NOP instructions cycle timing behavior

Example instructionsCyclesEarly RegLate RegResult latencyComments
IT{<v>{<w>{<z>}}} <cond>1----
NOP1----

The DBG, PLI, and YIELD instructions are all treated the same as NOP, and so have the same cycle timing behavior.

The WFI and WFE instructions stall the pipeline for a variable number of cycles, depending on the current state of the memory system.

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