[Bug tree-optimization/106967] [13 Regression] ICE in upper_bound, at value-range.h:348 since r13-2713-g917461478d3bb733

[aldyh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106967

--- Comment #8 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Created attachment 53595
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53595&action=edit
patch in testing

This was painful.  I had audit all the relational code to make sure we're
handling NANs before anything else.