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

Git repository change summary for qt/clang/llvm-project
Pushed by mirror-service into branch 'upstream/users/makslevental/mlir-c-typeconverter-1ton'.
Changed from e4b62b0279fad81a1d2969822e9f009f31d8f04d to 5c30a1e03b30af3853f61ca97b1dc710ce0ee971
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 5c30a1e03b30af3853f61ca97b1dc710ce0ee971 by makslevental on 18/07/2026 at 18:57..
[mlir-c] Expose hard-failure state in 1:N type conversion callback

The 1:N conversion callback returned MlirLogicalResult, which the binding
could only map to success or nullopt (try-another), leaving the C++
failure() state (fail without trying another conversion) unreachable.

Return a MlirTypeConverterConversionStatus enum instead, with Success,
Failure, and Declined states mapped to success(), failure(), and
std::nullopt respectively. Add a test covering the hard-failure path.
https://invent.kde.org/qt/clang/llvm-project/-/commit/5c30a1e03b30af3853f61ca97b1dc710ce0ee971