https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68173
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |ra CC| |vmakarov at gcc dot gnu.org Component|c |rtl-optimization --- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> --- Btw, peak memory occurs during RA (as expected, DF ...). p x_rtl.emit.x_reg_rtx_no $3 = 5328459 that's a lot of pseudos (at -O0 probably still all used). The BB is also very large thus peak occurs within BB-local DF routines like df_lr_bb_local_compute (which also end up very slow). The suggested patch has no effect on the above number.