[llvm] [AArch64] Lower EH_RETURN (PR #76775)

[David Spickett via llvm-commits]

DavidSpickett wrote:

Looks like an infrastructure issue, given that you're not changing MLIR here.
```
FAILED: tools/mlir/python/CMakeFiles/MLIRPythonModules.sources.MLIRPythonSources.Dialects.cf.ops_gen.util tools/mlir/python_packages/mlir_core/mlir/dialects/_cf_ops_gen.py
cmd.exe /C "cd /D C:\ws\src\build\tools\mlir\python && C:\BuildTools\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe -E copy_if_different C:/ws/src/build/tools/mlir/python/dialects/_cf_ops_gen.py C:/ws/src/build/tools/mlir/python_packages/mlir_core/mlir/dialects/_cf_ops_gen.py"
Error copying file (if different) from "C:/ws/src/build/tools/mlir/python/dialects/_cf_ops_gen.py" to "C:/ws/src/build/tools/mlir/python_packages/mlir_core/mlir/dialects/_cf_ops_gen.py".
```
Though you could rebase your branch just to see if it was someone else's change that is causing the problem.

https://github.com/llvm/llvm-project/pull/76775