Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32GG11B/EFM32GG11B510F2048IQ64/GPIO/IF#0x0
Interrupt Flag Register
External Pin Interrupt Flag
EM4 Wake Up Pin Interrupt Flag
https://github.com/cmsis-svd/cmsis-svd-data