[Bug tree-optimization/108447] [13 Regression] glibc math/test-*-iseqsig failures

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108447

--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
BTW, because both union and intersect are commutative, so perhaps we should
have a self-test that verifies that.  Guess that would catch the VREL_UNDEFINED
line errors.