Better error

Author: jhuber6

clang/lib/CodeGen/CGOpenMPRuntimeGPU.cpp

@@ -1316,10 +1316,10 @@ void CGOpenMPRuntimeGPU::emitTargetCall(
     llvm::function_ref<llvm::Value *(CodeGenFunction &CGF,
                                      const OMPLoopDirective &D)>
         SizeEmitter) {
-  SmallString<256> Buffer;
-  llvm::raw_svector_ostream Out(Buffer);
-  Out << "Cannot emit a '#pragma omp target' on the GPU";
-  CGM.Error(D.getBeginLoc(), Out.str());
+  unsigned DiagID = CGM.getDiags().getCustomDiagID(
+      DiagnosticsEngine::Error,
+      "Cannot emit a '#pragma omp target' region on the GPU");
+  CGM.getDiags().Report(D.getBeginLoc(), DiagID);
 }
 
 void CGOpenMPRuntimeGPU::emitCriticalRegion(

clang/test/OpenMP/gpu_target_messages.cpp

@@ -2,6 +2,6 @@
 // RUN: %clang_cc1 -verify -fopenmp -fopenmp-version=45 -x c++ -triple nvptx64-nvidia-cuda -emit-llvm %s
 
 void foo() {
-#pragma omp target // expected-error {{Cannot emit a '#pragma omp target' on the GPU}}
+#pragma omp target // expected-error {{Cannot emit a '#pragma omp target' region on the GPU}}
   ;
 }