[llvm] [mlir] [llvm][OpenMP] Handle complex types in atomic read (PR #111377)

[Tom Eccles via llvm-commits]

tblah wrote:

> @tblah Is the segfault with this patch or without it?

The segfault is with this patch. Without this patch flang-new hits an assertion failure.

https://github.com/llvm/llvm-project/pull/111377