[Bug tree-optimization/107569] [13 Regression] Failure to optimize std::isfinite since r13-3596

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107569

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The cdce case is something I've mentioned today:
https://gcc.gnu.org/pipermail/gcc-patches/2022-November/605338.html
The comparisons in there are artificial and so unlike user comparisons we
should (if they were marked somehow) be able to optimize them away if frange
can prove their result.
But that isn't something happening on the #c0 testcase, is it?