For Cortex-M3 and M4 parts, the LPCXpresso IDE "Registers" view has cycle and cycledelta registers displayed in it which will give you cycle counts. And you can also access various counts within the SWO Trace functionality : https://community.nxp.com/message/630730
But with regards to power measurement, the IDE does provide a Power Measurement view - as detailed in the supplied LPCXpresso IDE Power Measurement Guide - which will work with the LPCXpresso54102 board. However this can't measure down to the level of single cycles / assembler instructions - its much more of an average over a period of time.
Regards,
LPCXpresso Support
