[clang] [mlir] [CIR][OpenMP] Add host op filtering pass to CIR pipeline (PR #209592)

[Jan Leyonberg via cfe-commits]

================
@@ -5130,22 +5130,25 @@ std::unique_ptr<mlir::Pass> createConvertCIRToLLVMPass() {
   return std::make_unique<ConvertCIRToLLVMPass>();
 }
 
-void populateCIRToLLVMPasses(mlir::OpPassManager &pm) {
+void populateCIRToLLVMPasses(mlir::OpPassManager &pm, bool enableOpenMP) {
   mlir::populateCIRPreLoweringPasses(pm);
-  pm.addPass(mlir::omp::createMarkDeclareTargetPass());
+  if (enableOpenMP)
+    pm.addPass(mlir::omp::createMarkDeclareTargetPass());
----------------
jsjodin wrote:

I think we should move this to the omp dialect as well.

https://github.com/llvm/llvm-project/pull/209592