Index: include/clang/Basic/DiagnosticDriverKinds.td
===================================================================
--- include/clang/Basic/DiagnosticDriverKinds.td
+++ include/clang/Basic/DiagnosticDriverKinds.td
@@ -130,7 +130,9 @@
 def err_drv_invalid_omp_target : Error<"OpenMP target is invalid: '%0'">;
 def err_drv_omp_host_ir_file_not_found : Error<
   "The provided host compiler IR file '%0' is required to generate code for OpenMP target regions but cannot be found.">;
-
+def err_drv_omp_host_or_device_target_not_supported : Error<
+  "The target '%0' is not a supported OpenMP %select{host|device}1 target.">;
+  
 def warn_O4_is_O3 : Warning<"-O4 is equivalent to -O3">, InGroup<Deprecated>;
 def warn_drv_lto_libpath : Warning<"libLTO.dylib relative to clang installed dir not found; using 'ld' default search path instead">,
   InGroup<LibLTO>;
Index: lib/CodeGen/CGOpenMPRuntime.h
===================================================================
--- lib/CodeGen/CGOpenMPRuntime.h
+++ lib/CodeGen/CGOpenMPRuntime.h
@@ -549,10 +549,15 @@
   ///
   llvm::Value *getCriticalRegionLock(StringRef CriticalName);
 
+  /// \brief Create specialized OpenMP runtime code generation class for NVPTX
+  /// targets.
+  static CGOpenMPRuntime *createCGOpenMPRuntimeNVPTX(CodeGenModule &CGM);
+
 public:
   explicit CGOpenMPRuntime(CodeGenModule &CGM);
   virtual ~CGOpenMPRuntime() {}
   virtual void clear();
+  static CGOpenMPRuntime *create(CodeGenModule &CGM);
 
   /// \brief Emits outlined function for the specified OpenMP parallel directive
   /// \a D. This outlined function has type void(*)(kmp_int32 *ThreadID,
Index: lib/CodeGen/CGOpenMPRuntime.cpp
===================================================================
--- lib/CodeGen/CGOpenMPRuntime.cpp
+++ lib/CodeGen/CGOpenMPRuntime.cpp
@@ -329,6 +329,21 @@
   InternalVars.clear();
 }
 
+CGOpenMPRuntime *CGOpenMPRuntime::create(CodeGenModule &CGM) {
+  // Select a specialized codegen implementation for the requested target if
+  // we have one. Otherwise use the default.
+  switch (CGM.getTarget().getTriple().getArch()) {
+  default:
+    return new CGOpenMPRuntime(CGM);
+  case llvm::Triple::nvptx:
+  case llvm::Triple::nvptx64:
+    assert(CGM.getLangOpts().OpenMPIsDevice &&
+           "OpenMP NVPTX is only prepared to deal with device code.");
+    return createCGOpenMPRuntimeNVPTX(CGM);
+  }
+  return nullptr;
+}
+
 // Layout information for ident_t.
 static CharUnits getIdentAlign(CodeGenModule &CGM) {
   return CGM.getPointerAlign();
Index: lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp
===================================================================
--- /dev/null
+++ lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp
@@ -0,0 +1,30 @@
+//===---- CGOpenMPRuntimeNVPTX.cpp - Interface to OpenMP NVPTX Runtimes ---===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This provides a class for OpenMP runtime code generation specialized to NVPTX
+// targets.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CGOpenMPRuntime.h"
+
+namespace clang {
+namespace CodeGen {
+
+class CGOpenMPRuntimeNVPTX : public CGOpenMPRuntime {
+public:
+  explicit CGOpenMPRuntimeNVPTX(CodeGenModule &CGM) : CGOpenMPRuntime(CGM) {}
+};
+
+CGOpenMPRuntime *
+CGOpenMPRuntime::createCGOpenMPRuntimeNVPTX(CodeGenModule &CGM) {
+  return new CGOpenMPRuntimeNVPTX(CGM);
+}
+} // CodeGen namespace.
+} // clang namespace.
Index: lib/CodeGen/CMakeLists.txt
===================================================================
--- lib/CodeGen/CMakeLists.txt
+++ lib/CodeGen/CMakeLists.txt
@@ -57,6 +57,7 @@
   CGObjCRuntime.cpp
   CGOpenCLRuntime.cpp
   CGOpenMPRuntime.cpp
+  CGOpenMPRuntimeNVPTX.cpp
   CGRecordLayoutBuilder.cpp
   CGStmt.cpp
   CGStmtOpenMP.cpp
Index: lib/CodeGen/CodeGenModule.cpp
===================================================================
--- lib/CodeGen/CodeGenModule.cpp
+++ lib/CodeGen/CodeGenModule.cpp
@@ -200,7 +200,7 @@
 }
 
 void CodeGenModule::createOpenMPRuntime() {
-  OpenMPRuntime = new CGOpenMPRuntime(*this);
+  OpenMPRuntime = CGOpenMPRuntime::create(*this);
 }
 
 void CodeGenModule::createCUDARuntime() {
Index: lib/Frontend/CompilerInvocation.cpp
===================================================================
--- lib/Frontend/CompilerInvocation.cpp
+++ lib/Frontend/CompilerInvocation.cpp
@@ -1427,6 +1427,7 @@
 }
 
 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
+                          const TargetOptions &TargetOpts,
                           DiagnosticsEngine &Diags) {
   // FIXME: Cleanup per-file based stuff.
   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
@@ -1822,6 +1823,22 @@
   Opts.OpenMPIsDevice =
       Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device);
 
+  // Provide diagnostic when a given target is not expected to be an OpenMP
+  // device or host.
+  if (Opts.OpenMP && !Opts.OpenMPIsDevice) {
+    llvm::Triple T(TargetOpts.Triple);
+    switch (T.getArch()) {
+    default:
+      break;
+    // Add unsupported host targets here:
+    case llvm::Triple::nvptx:
+    case llvm::Triple::nvptx64:
+      Diags.Report(clang::diag::err_drv_omp_host_or_device_target_not_supported)
+          << TargetOpts.Triple << Opts.OpenMPIsDevice;
+      break;
+    }
+  }
+
   // Get the OpenMP target triples if any.
   if (Arg *A = Args.getLastArg(options::OPT_omptargets_EQ)) {
 
@@ -2088,7 +2105,7 @@
                         Diags, Res.getLangOpts()->Sanitize);
   } else {
     // Other LangOpts are only initialzed when the input is not AST or LLVM IR.
-    ParseLangArgs(*Res.getLangOpts(), Args, DashX, Diags);
+    ParseLangArgs(*Res.getLangOpts(), Args, DashX, Res.getTargetOpts(), Diags);
     if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
       Res.getLangOpts()->ObjCExceptions = 1;
   }
Index: test/OpenMP/target_messages.cpp
===================================================================
--- test/OpenMP/target_messages.cpp
+++ test/OpenMP/target_messages.cpp
@@ -1,6 +1,9 @@
 // RUN: %clang_cc1 -verify -fopenmp -std=c++11 -o - %s
 // RUN: not %clang_cc1 -fopenmp -std=c++11 -omptargets=aaa-bbb-ccc-ddd -o - %s 2>&1 | FileCheck %s
 // CHECK: error: OpenMP target is invalid: 'aaa-bbb-ccc-ddd'
+// RUN: not %clang_cc1 -fopenmp -std=c++11 -triple nvptx64-nvidia-cuda -o - %s 2>&1 | FileCheck --check-prefix CHECK-UNSUPPORTED-HOST-TARGET %s
+// RUN: not %clang_cc1 -fopenmp -std=c++11 -triple nvptx-nvidia-cuda -o - %s 2>&1 | FileCheck --check-prefix CHECK-UNSUPPORTED-HOST-TARGET %s
+// CHECK-UNSUPPORTED-HOST-TARGET: error: The target '{{nvptx64-nvidia-cuda|nvptx-nvidia-cuda}}' is not a supported OpenMP host target.
 
 void foo() {
 }