code Profiling in terms of cycles

[nitinvjain]

Hi,
Started using Ripes.
I don't see any option for profiling.
But can I use cycles on processor tab under execution info.
I can see that for O0 mode, that number is making sense but for O0, it always shows some fixed number.
Can anybody guide how to check profiling under O1/O2/O3 mode?