[Bug rtl-optimization/117922] [15 Regression] 1000% compilation time slow down on the testcase from pr26854

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117922

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #4)
> For me targetting aarch64, the peak memory is over 26G and it is taking over
> an hour.

  65.86%  cc1                       [.] _Z15bitmap_ior_intoP11bitmap_headPKS_  
                                                                               
                                                                               
                                                                            ◆
  19.52%  cc1                       [.]
_ZL14bitmap_elt_iorP11bitmap_headP14bitmap_elementS2_PKS1_S4_b                 
                                                                               
                                                                               
                                    ▒
   6.35%  cc1                       [.]
_ZL29df_worklist_propagate_forwardP8dataflowjPjP11bitmap_headS3_P17simple_bitmap_defR3vecIi7va_heap6vl_ptrEi
 


Looks like cprop_hardreg for aarch64 but I could be wrong.