https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99600
Arnd Bergmann <arnd at linaro dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at redhat dot com --- Comment #2 from Arnd Bergmann <arnd at linaro dot org> --- perf shows these functions as the most commonly called ones, presumably it's looping through all of those: 5.39% cc1 cc1 [.] df_ref_create_structure 5.33% cc1 cc1 [.] df_uses_record 4.41% cc1 cc1 [.] ggc_internal_alloc 3.41% cc1 cc1 [.] df_ref_record 2.79% cc1 cc1 [.] peephole2_insns 2.69% cc1 cc1 [.] ix86_lea_outperforms 2.58% cc1 cc1 [.] df_insn_rescan 2.33% cc1 cc1 [.] df_sort_and_compress_refs 2.05% cc1 cc1 [.] df_free_ref This recent change touches ix86_lea_outperforms, could be related: https://github.com/gcc-mirror/gcc/commit/decd8fb01288