[Mlir-commits] [mlir] [tblgen] Use `emitError` for inferResultTypes failures (PR #165488)

[Jacques Pienaar]

https://github.com/jpienaar requested changes to this pull request.

MLIR build calls with invalid inputs aren't expected to pass/will crash in many cases. If the type inference fails it's due to invalid config and there should be no build: nothing is checking for failure today and it would silently result in invalid op's state being propagated.

What folks do here sometimes is two step, infer result type and then build (if valid) with explicit type. That could be made into a helper.

https://github.com/llvm/llvm-project/pull/165488