[OPENMP]Do not emit RTTI descriptor for NVPTX devices.

Need to disable emission of RTTI descriptors for NVPTX devices to be
able to use dynamic classes without unresolved symbols at link stage.

clang/lib/CodeGen/CodeGenModule.cpp

@@ -5762,7 +5762,9 @@ llvm::Constant *CodeGenModule::GetAddrOfRTTIDescriptor(QualType Ty,
   // Return a bogus pointer if RTTI is disabled, unless it's for EH.
   // FIXME: should we even be calling this method if RTTI is disabled
   // and it's not for EH?
-  if ((!ForEH && !getLangOpts().RTTI) || getLangOpts().CUDAIsDevice)
+  if ((!ForEH && !getLangOpts().RTTI) || getLangOpts().CUDAIsDevice ||
+      (getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice &&
+       getTriple().isNVPTX()))
     return llvm::Constant::getNullValue(Int8PtrTy);
 
   if (ForEH && Ty->isObjCObjectPointerType() &&

clang/test/OpenMP/nvptx_target_pure_deleted_codegen.cpp

@@ -1,6 +1,6 @@
 // Test target codegen - host bc file has to be created first.
 // RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm-bc %s -o %t-ppc-host.bc
-// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - -fno-rtti | FileCheck %s
+// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s
 // RUN: %clang_cc1 -verify -fopenmp -x c++ -triple i386-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm-bc %s -o %t-x86-host.bc
 // RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-x86-host.bc -o - -fno-rtti | FileCheck %s
 // RUN: %clang_cc1 -verify -fopenmp -fexceptions -fcxx-exceptions -x c++ -triple nvptx-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-x86-host.bc -o - -fno-rtti | FileCheck %s
@@ -9,9 +9,10 @@
 #ifndef HEADER
 #define HEADER
 
-
+// CHECK-NOT: class_type_info
 // CHECK-DAG: @_ZTV7Derived = linkonce_odr hidden unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null, i8* null, i8* bitcast (void (%class.Derived*)* @_ZN7Derived3fooEv to i8*)] }
 // CHECK-DAG: @_ZTV4Base = linkonce_odr hidden unnamed_addr constant { [3 x i8*] } zeroinitializer
+// CHECK-NOT: class_type_info
 class Base {
   public:
   virtual void foo() = 0;