[Bug rtl-optimization/124165] [16 Regression] Many std::map<string, string> -> long compilation time at -O0 (late_pro_and_epilogue pass involved)

[pheeck at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124165

--- Comment #1 from Filip Kastl <pheeck at gcc dot gnu.org> ---
Btw I compare trunk with GCC15 but this slowdown happened recently (in the last
few days).  I'll bisect.