Add mlir dump function

src/include/migraphx/mlir.hpp

+#ifndef MIGRAPHX_GUARD_RTGLIB_MLIR_HPP
+#define MIGRAPHX_GUARD_RTGLIB_MLIR_HPP
+
+#include <string>
+#include <migraphx/config.hpp>
+
+namespace migraphx {
+inline namespace MIGRAPHX_INLINE_NS {
+struct module;
+
+std::string dump_mlir(const module& m);
+
+} // namespace MIGRAPHX_INLINE_NS
+} // namespace migraphx
+
+#endif

src/mlir.cpp

+#include <migraphx/mlir.hpp>
 
 #include <mlir-c/IR.h>
 #include <mlir-c/BuiltinAttributes.h>
@@ -99,6 +100,14 @@ void mlir_print(F f, T x, std::ostream& os)
     mlir_print(f, x, [&](auto s) { os << s; });
 }
 
+template <class F, class T>
+std::string mlir_print(F f, T x)
+{
+    std::stringstream ss;
+    mlir_print(f, x, [&](auto s) { ss << s; });
+    return ss.str();
+}
+
 struct mlir_program
 {
     mlir_program()
@@ -411,5 +420,13 @@ struct mlir_program
     std::deque<std::string> strings{};
 };
 
+std::string dump_mlir(const module& m)
+{
+    mlir_program mp;
+    mp.parse(m);
+    auto mod_op = mlirModuleGetOperation(mp.mmodule.get());
+    return mlir_print(&mlirOperationPrint, mod_op);
+}
+
 } // namespace MIGRAPHX_INLINE_NS
 } // namespace migraphx