[qt/clang/llvm]: Summary of bulk changes made

Git repository change summary for qt/clang/llvm
Pushed by mirror-service into branch 'upstream/users/delcypher/fix-or_null_sized_by-codegen-bugs-part-1'.
Changed from 0000000000000000000000000000000000000000 to f306c2741b5334dedc34513cf1eab875defa86c3
Acknowledgement was received that this change introduces only existing code that has been pushed to another public open source repository.

This change contains the following new commits:

Git commit f306c2741b5334dedc34513cf1eab875defa86c3 by Dan Liew on 03/08/2026 at 22:34..
[CodeGen][NFC] Split __sized_by tests into their own file and rename test cases

In future patches the coverage of the __counted_by family attributes is
going to be increased. To help with this patch refactors the existing
test file.

1. Split `__sized_by` tests into their own file. In later commits files
   will be added for each attribute so it makes sense for each attribute
   to have its own file.
2. Replace `testN` test case names with human readable descriptions. Not
   all test cases that will be added in the future will apply to all
   attributes. If we kept on using the `testN` naming convention it
   would leave odd gaps in the test numbering because we try to keep
   what a test case tests consistent between files (i.e. `testN` would
   roughly test the same thing but with a different attribute). Using
   named test cases completely avoids this.
https://invent.kde.org/qt/clang/llvm/-/commit/f306c2741b5334dedc34513cf1eab875defa86c3