https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107196
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- llvm/lib/Target/RISCV/RISCVISelLowering.cpp is huge source and it might have undefined code in it. Maybe narrow down which function is going wrong. Maybe fire up gdb and see where the infinite loop is located too.
