https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71934
--- Comment #26 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Note, the code to emit that relocation table isn't for free, besides that ~3% growth of the *.gch files it also slows down the PCH generation, e.g. for stdc++.h at -O2 -g on my box from ~3.45s to ~4.13s, so some 20%, I bet mainly to qsort the array of ~2.5 million pointers. But upon PCH restore it shouldn't be noticeable, it is one size_t fread and one fseek when no relocation is needed.
