[clang] [llvm] Fix Windows EH IP2State tables (remove +1 bias) (PR #144745)

[via llvm-commits]

sivadeilra wrote:

> This looks hand-edited; please regenerate with update_llc_test_checks.

I ran `update_llc_test_checks.py` on `win64_frame.ll` and it deleted all of the checks from the body of `f5` and `f6`.  That doesn't seem right.

I tried running it with `--function f5` and it still deleted everything in `f5` and also appended this to the end of the file:

```
;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
; CHECK: {{.*}}
```

Is that because the output of `f5` and `f6` are now different between the variations in this file?

https://github.com/llvm/llvm-project/pull/144745