[Bug c++/64191] [4.9/5 Regression] -march=native messes up dead code elimination in loop calling dtor

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64191

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yes, I'm afraid it is a bad idea, you'll get rid of too many clobbers and they
are really desirable, both for DSE, expansion etc.