[Bug tree-optimization/93199] [8/9/10 Regression] Compile time hog in sink_clobbers

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93199

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
-   77.83%     0.45%         16118  cc1plus  cc1plus           [.] (anonymous
namespace)::pass_cleanup_eh::execute              ▒
   - 77.38% (anonymous namespace)::pass_cleanup_eh::execute 
      - 77.29% cleanup_empty_eh_merge_phis              
         - 44.55% redirect_eh_edge_1
              30.45% last_stmt                                                  
            + 4.01% lookup_stmt_eh_lp_fn                                        
            + 2.96% remove_stmt_from_eh_lp_fn                                   
              2.77% gimple_block_label                                          
              0.55% get_eh_landing_pad_from_number                     
         + 16.68% add_stmt_to_eh_lp_fn                      
           5.34% find_edge                                     
         + 4.58% redirect_edge_succ                          
           0.59% gimple_execute_on_growing_pred

that last_stmt figure looks odd tho (I blame perf for this).  This is on
the original redhat bugzilla testcase btw, will check your reduced one.