[llvm] [NewPM][CodeGen] Port `localstackalloc` to new pass manager (PR #94303)

[via llvm-commits]

paperchalice wrote:

```
clang++: error: no such file or directory: '/var/lib/buildkite-agent/builds/linux-56-59b8f5d88-rshzq-1/llvm-project/github-pull-requests/build/tools/bolt/test/Output/lsda-section-name.cpp.tmp.o'
```

https://github.com/llvm/llvm-project/pull/94303