Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32GG12B/EFM32GG12B410F1024GM64/LETIMER1/IFS#0x0
Interrupt Flag Set Register
Set COMP0 Interrupt Flag
Set COMP1 Interrupt Flag
Set UF Interrupt Flag
Set REP0 Interrupt Flag
Set REP1 Interrupt Flag
https://github.com/cmsis-svd/cmsis-svd-data