[Bug tree-optimization/92712] [8/9/10 Regression] Performance regression with assumed values

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92712

--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 47398
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47398&action=edit
gcc10-pr92712.patch

Full untested patch.