[clang] [clang-tools-extra] [flang] [llvm] [mlir] [polly] [test]: fix filecheck annotation typos (PR #91854)

[Fangrui Song via llvm-commits]

https://github.com/MaskRay approved this pull request.

Some CHECK prefixes are auto-generated by llvm/utils/update_*_test_checks.py.
Let's say my build directory is `/tmp/Rel` while my source is at `~/llvm`, use
```
PATH=/tmp/Rel/bin:$PATH ~/llvm/llvm/utils/update_any_test_checks.py path/to/test
```

to re-generate tests.
(It seems that some stale comments might not be removed. I haven't read these scripts for a long time.)

Perhaps revert changes to files that cause failures and possibly keep just `llvm/` in this PR.

Feel free to raise a post on https://discourse.llvm.org/ and possibly refer to https://discourse.llvm.org/t/rfc-improving-filecheck/54962 (a previous post about these typos in tests).
Thank you so much for cleaning up these tests!


https://github.com/llvm/llvm-project/pull/91854