nRF Connect SDK with IAR

My current project is based on nRF52810. The nRF Connect SDK I found gives the idea that the architecture only works with GCC, according to the link https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/introduction.html . Or are we able to use various compilers? IAR applies to my scenario. Also, does anyone know if Zephyr and IAR work together, Is there any reference manual for porting Zephyr into IAR?

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