[Bug tree-optimization/104515] [11/12/13/14/15 Regression] trivially-destructible destructors interfere with loop optimization - maybe related to lifetime-dse.

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104515

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Testcase from PR96717, also fixed with my patch in testing.

#include <vector>

void pop_many(std::vector<int>& v, unsigned n) {
    for (unsigned i = 0; i < n; ++i) {
        v.pop_back();
    }
}