[Bug tree-optimization/93010] Wrong optimization: provenance affects comparison of saved bits of addresses of dead auto variables

[ch3root at openwall dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93010

--- Comment #1 from Alexander Cherepanov <ch3root at openwall dot com> ---
clang bug -- https://bugs.llvm.org/show_bug.cgi?id=44342

There is a second example there, with memcpy/memcmp, but it doesn't trigger the
bug in gcc so not pasting it here. (Generally gcc seems to be much less
consistent than clang in optimizing integers vs. memcpy/memcmp.)