https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63927
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Kostya Serebryany from comment #4) > Why can't we use frame pointers on PPC? You don't need to use the frame pointer. The ABI says the stack frame always contains a reference to the previous frame at a specific location (I think sp+0). > So far I have not seen any implementation of unwinder not based on FPs > that was fast enough for ASan. > ASan unwinds the stack on every malloc/free and thus it is very sensitive to > the unwinder performance.
