Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32GG11B/EFM32GG11B120F2048GQ64/RTC/IFC#0x0
Interrupt Flag Clear Register
Clear OF Interrupt Flag
Clear COMP Interrupt Flag
https://github.com/cmsis-svd/cmsis-svd-data