[flang] [llvm] [mlir] [MLIR][OpenMP] Lowering nontemporal clause to LLVM IR for SIMD directive (PR #118751)

[Tom Eccles via llvm-commits]

https://github.com/tblah approved this pull request.

Thanks for all of the updates. This now LGTM.

Small nit: a shared library build didn't work on my machine. This change fixed it for me
```diff
diff --git a/flang/lib/Optimizer/OpenMP/CMakeLists.txt b/flang/lib/Optimizer/OpenMP/CMakeLists.txt
index 22f78125c380..e31543328a9f 100644
--- a/flang/lib/Optimizer/OpenMP/CMakeLists.txt
+++ b/flang/lib/Optimizer/OpenMP/CMakeLists.txt
@@ -18,7 +18,7 @@ add_flang_library(FlangOpenMPTransforms
   LINK_LIBS
   FIRAnalysis
   FIRBuilder
-  FIRCodeGen
+  FIRCodeGenDialect
   FIRDialect
   FIRDialectSupport
   FIRSupport
```

Please wait a few days before merging in case anyone else wants to take a look.

https://github.com/llvm/llvm-project/pull/118751