Please note: We are aware of an issue affecting replies on the Arm Community forums, which may not be loading as expected.
We apologize for any inconvenience and appreciate your patience while we investigate and work to resolve the issue.
Thank you for your understanding.
What does it mean that an instruction is a hint instruction, like NOP, YIELD and WFE?
I haven't found any explanations in ARM Architecture Reference Manual, ARMv7-A and ARMv7-R edition, Issue C.
[EDIT]
Aha, this has already been answered in:
Are processors really only "taking a hint" for WFE,WFI,SEV?
It would have been nice to know what instructions like NOP and YIELD affect the HW, or are the hint instructions more like partially/fully implementation dependent?
[/EDIT]
Thanks. I suspected something like that.