diff --git a/mlir/include/mlir/Dialect/OpenMP/OpenMPDialect.h b/mlir/include/mlir/Dialect/OpenMP/OpenMPDialect.h
--- a/mlir/include/mlir/Dialect/OpenMP/OpenMPDialect.h
+++ b/mlir/include/mlir/Dialect/OpenMP/OpenMPDialect.h
@@ -13,6 +13,10 @@
 #ifndef MLIR_DIALECT_OPENMP_OPENMPDIALECT_H_
 #define MLIR_DIALECT_OPENMP_OPENMPDIALECT_H_
 
+namespace mlir::omp {
+class RTLModuleFlagsAttr;
+} // namespace mlir::omp
+
 #include "mlir/Dialect/LLVMIR/LLVMDialect.h"
 #include "mlir/IR/Dialect.h"
 #include "mlir/IR/OpDefinition.h"
diff --git a/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td b/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
--- a/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
+++ b/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
@@ -28,6 +28,17 @@
   let cppNamespace = "::mlir::omp";
   let dependentDialects = ["::mlir::LLVM::LLVMDialect"];
   let useDefaultAttributePrinterParser = 1;
+
+  let extraClassDeclaration = [{
+    // Apply an omp.RTLModuleFlagsAttr to a module with the specified values for the 
+    // flags
+    static void setRTLFlags(mlir::ModuleOp module, uint32_t debugKind, 
+      bool assumeTeamsOversubscription, bool assumeThreadsOversubscription, 
+      bool assumeNoThreadState, bool assumeNoNestedParallelism);
+
+    // Return an omp.RTLModuleFlagsAttr from a given module, if it exists
+    static mlir::omp::RTLModuleFlagsAttr getRTLFlags(mlir::ModuleOp module);
+  }];
 }
 
 // OmpCommon requires definition of OpenACC_Dialect.
@@ -42,6 +53,34 @@
 def OpenMP_PointerLikeType : TypeAlias<OpenMP_PointerLikeTypeInterface,
 	"OpenMP-compatible variable type">;
 
+// All of the attributes will extend this class.
+class OpenMP_Attr<string name, string attrMnemonic,
+                list<Trait> traits = [],
+                string baseCppClass = "::mlir::Attribute">
+    : AttrDef<OpenMP_Dialect, name, traits, baseCppClass> {
+  let mnemonic = attrMnemonic;
+}
+
+//===----------------------------------------------------------------------===//
+// Runtime library flag's attribute that holds information for lowering to LLVM
+//===----------------------------------------------------------------------===//
+
+def RTLModuleFlagsAttr : OpenMP_Attr<"RTLModuleFlags", "rtlmoduleflags"> {
+  let parameters = (ins 
+    "uint32_t":$debug_kind,
+    "bool":$assume_teams_oversubscription,
+    "bool":$assume_threads_oversubscription,
+    "bool":$assume_no_thread_state,
+    "bool":$assume_no_nested_parallelism
+  );
+
+  let assemblyFormat =  "`<` `debug_kind` `:` $debug_kind `,`"
+   " `assume_teams_oversubscription` `:` $assume_teams_oversubscription `,`"
+   " `assume_threads_oversubscription` `:` $assume_threads_oversubscription `,`"
+   " `assume_no_thread_state` `:` $assume_no_thread_state `,`"
+   " `assume_no_nested_parallelism` `:` $assume_no_nested_parallelism `>`";
+}
+
 //===----------------------------------------------------------------------===//
 // 2.6 parallel Construct
 //===----------------------------------------------------------------------===//
diff --git a/mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp b/mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp
--- a/mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp
+++ b/mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp
@@ -1417,6 +1417,32 @@
   return success();
 }
 
+//===----------------------------------------------------------------------===//
+// OpenMPDialect helper functions
+//===----------------------------------------------------------------------===//
+
+// Apply an omp.RTLModuleFlagsAttr to a module with the specified values for the
+// flags
+void OpenMPDialect::setRTLFlags(mlir::ModuleOp module, uint32_t debugKind,
+                                bool assumeTeamsOversubscription,
+                                bool assumeThreadsOversubscription,
+                                bool assumeNoThreadState,
+                                bool assumeNoNestedParallelism) {
+  module->setAttr(("omp." + mlir::omp::RTLModuleFlagsAttr::getMnemonic()).str(),
+                  mlir::omp::RTLModuleFlagsAttr::get(
+                      module->getContext(), debugKind,
+                      assumeTeamsOversubscription,
+                      assumeThreadsOversubscription, assumeNoThreadState,
+                      assumeNoNestedParallelism));
+}
+
+// Return an omp.RTLModuleFlagsAttr from a given module, if it exists
+RTLModuleFlagsAttr OpenMPDialect::getRTLFlags(mlir::ModuleOp module) {
+  if (Attribute isDevice = module->getAttr("omp.rtlmoduleflags"))
+    return isDevice.dyn_cast_or_null<mlir::omp::RTLModuleFlagsAttr>();
+  return nullptr;
+}
+
 #define GET_ATTRDEF_CLASSES
 #include "mlir/Dialect/OpenMP/OpenMPOpsAttributes.cpp.inc"
 
diff --git a/mlir/test/Dialect/OpenMP/attr.mlir b/mlir/test/Dialect/OpenMP/attr.mlir
new file mode 100644
--- /dev/null
+++ b/mlir/test/Dialect/OpenMP/attr.mlir
@@ -0,0 +1,24 @@
+// RUN: mlir-opt %s | mlir-opt | FileCheck %s
+
+// CHECK: module attributes {omp.rtlmoduleflags = #omp.rtlmoduleflags<debug_kind : 20, assume_teams_oversubscription : false, assume_threads_oversubscription : false, assume_no_thread_state : false, assume_no_nested_parallelism : false>} {
+module attributes {omp.rtlmoduleflags = #omp.rtlmoduleflags<debug_kind : 20, assume_teams_oversubscription : false, assume_threads_oversubscription : false, assume_no_thread_state : false, assume_no_nested_parallelism : false>} {}
+
+// -----
+
+// CHECK: module attributes {omp.rtlmoduleflags = #omp.rtlmoduleflags<debug_kind : 0, assume_teams_oversubscription : true, assume_threads_oversubscription : false, assume_no_thread_state : false, assume_no_nested_parallelism : false>} {
+module attributes {omp.rtlmoduleflags = #omp.rtlmoduleflags<debug_kind : 0, assume_teams_oversubscription : true, assume_threads_oversubscription : false, assume_no_thread_state : false, assume_no_nested_parallelism : false>} {}
+
+// -----
+
+// CHECK: module attributes {omp.rtlmoduleflags = #omp.rtlmoduleflags<debug_kind : 100, assume_teams_oversubscription : true, assume_threads_oversubscription : true, assume_no_thread_state : false, assume_no_nested_parallelism : false>} {
+module attributes {omp.rtlmoduleflags = #omp.rtlmoduleflags<debug_kind : 100, assume_teams_oversubscription : true, assume_threads_oversubscription : true, assume_no_thread_state : false, assume_no_nested_parallelism : false>} {}
+
+// -----
+
+// CHECK: module attributes {omp.rtlmoduleflags = #omp.rtlmoduleflags<debug_kind : 200, assume_teams_oversubscription : true, assume_threads_oversubscription : true, assume_no_thread_state : true, assume_no_nested_parallelism : false>} {
+module attributes {omp.rtlmoduleflags = #omp.rtlmoduleflags<debug_kind : 200, assume_teams_oversubscription : true, assume_threads_oversubscription : true, assume_no_thread_state : true, assume_no_nested_parallelism : false>} {}
+
+// -----
+
+// CHECK: module attributes {omp.rtlmoduleflags = #omp.rtlmoduleflags<debug_kind : 300, assume_teams_oversubscription : true, assume_threads_oversubscription : true, assume_no_thread_state : true, assume_no_nested_parallelism : true>} {
+module attributes {omp.rtlmoduleflags = #omp.rtlmoduleflags<debug_kind : 300, assume_teams_oversubscription : true, assume_threads_oversubscription : true, assume_no_thread_state : true, assume_no_nested_parallelism : true>} {}