diff --git a/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp b/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
--- a/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
+++ b/mlir/lib/Target/LLVMIR/ModuleTranslation.cpp
@@ -882,6 +882,7 @@
         cast<llvm::FunctionType>(convertType(function.getFunctionType())));
     llvm::Function *llvmFunc = cast<llvm::Function>(llvmFuncCst.getCallee());
     llvmFunc->setLinkage(convertLinkageToLLVM(function.getLinkage()));
+    llvmFunc->setCallingConv(convertCConvToLLVM(function.getCConv()));
     mapFunction(function.getName(), llvmFunc);
     addRuntimePreemptionSpecifier(function.getDsoLocal(), llvmFunc);
 
diff --git a/mlir/test/Dialect/LLVMIR/func.mlir b/mlir/test/Dialect/LLVMIR/func.mlir
--- a/mlir/test/Dialect/LLVMIR/func.mlir
+++ b/mlir/test/Dialect/LLVMIR/func.mlir
@@ -1,6 +1,7 @@
 // RUN: mlir-opt -split-input-file -verify-diagnostics %s | mlir-opt | FileCheck %s
 // RUN: mlir-opt -split-input-file -verify-diagnostics -mlir-print-op-generic %s | FileCheck %s --check-prefix=GENERIC
 // RUN: mlir-opt -split-input-file -verify-diagnostics %s -mlir-print-debuginfo | mlir-opt -mlir-print-debuginfo | FileCheck %s --check-prefix=LOCINFO
+// RUN: mlir-translate -mlir-to-llvmir -split-input-file -verify-diagnostics %s | FileCheck %s --check-prefix=CHECK-LLVM
 
 module {
   // GENERIC: "llvm.func"
@@ -8,7 +9,7 @@
   // GENERIC-SAME: sym_name = "foo"
   // GENERIC-SAME: () -> ()
   // CHECK: llvm.func @foo()
-  "llvm.func"() ({
+  "llvm.func" () ({
   }) {sym_name = "foo", function_type = !llvm.func<void ()>} : () -> ()
 
   // GENERIC: "llvm.func"
@@ -142,6 +143,11 @@
     llvm.return
   }
 
+  // CHECK-LLVM: define ptx_kernel void @calling_conv
+  llvm.func ptx_kernelcc @calling_conv() {
+    llvm.return
+  }
+
   // Omit the `external` linkage, which is the default, in the custom format.
   // Check that it is present in the generic format using its numeric value.
   //