[Bug tree-optimization/102943] [12 Regression] Jump threader compile-time hog with 521.wrf_r

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102943

--- Comment #40 from Richard Biener <rguenth at gcc dot gnu.org> ---
OK, so after the two micro-optimizations we are now at

 tree VRP                           :  10.92 ( 17%)   0.03 (  5%)  10.94 ( 17%)
   28M (  4%)
 backwards jump threading           :  11.16 ( 18%)   0.00 (  0%)  11.15 ( 17%)
 1475k (  0%)
 TOTAL                              :  63.32          0.56         63.92       
  744M

and

 alias stmt walking                 :   6.91 ( 18%)   0.04 (  9%)   7.02 ( 18%)
  703k (  0%)
 tree VRP                           :   5.80 ( 15%)   0.03 (  7%)   5.83 ( 15%)
   14M (  3%)
 backwards jump threading           :   6.18 ( 16%)   0.01 (  2%)   6.17 ( 16%)
 1645k (  0%)
 TOTAL                              :  38.46          0.43         38.93       
  438M