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

[Jan Leyonberg via cfe-commits]

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@@ -473,6 +473,15 @@ def OffloadModuleInterface : OpInterface<"OffloadModuleInterface"> {
            return ::llvm::dyn_cast<BoolAttr>(isTargetDevice).getValue();
         return false;
       }]>,
+    InterfaceMethod<
+      /*description=*/[{
+        Return true if the current module was generated with OpenMP enabled.
+        }],
+      /*retTy=*/"bool",
+      /*methodName=*/"getIsOpenMP",
+      (ins), [{}], [{
+        return $_op->hasAttr("omp.is_target_device");
+      }]>,
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jsjodin wrote:

Is there a reason to have this optional? I guess it would affect tests, but adding an extra attribute would do the same I thnk. This is an indirect way of checking if OpenMP is used so it looks a bit odd, although having two attributes is also not great since they can be inconsistent with each other if something goes wrong.

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