[Bug tree-optimization/88074] [7/8/9 Regression] g++ hangs on math expression

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88074

--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 45039
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45039&action=edit
not working patch