miri no longer builds after rust-lang/rust#97158

[rust-highfive]

Hello, this is your friendly neighborhood mergebot.
After merging PR #97158, I observed that the tool miri has failing tests.
A follow-up PR to the repository https://github.com/rust-lang/miri is needed to fix the fallout.

cc @JakobDegen, do you think you would have time to do the follow-up work?
If so, that would be great!

[RalfJung]

Tons of test suite failures when testing with mir-opt; probably because the dead stores that cause UB got removed.

[JakobDegen]

@rustbot claim

[RalfJung]

I'd like to land rust-lang/miri#2158 before we update the in-tree Miri.