https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111600
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> --- On x86_64-linux the compile-time of the same dwarf2out.ii the slowdown between r14-2510-g3d0ca8b55b9a88 and r14-4258-gc9837443075277 is less than 2.5% (three runs, fastest vs slowest).