[OPENMP] Codegen for `#pragma omp target parallel for simd`.

Added codegen for `#pragma omp target parallel for simd` and clauses.

llvm-svn: 317813
diff --git a/clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp b/clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp
index c92b58e..c534631 100644
--- a/clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp
+++ b/clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp
@@ -277,6 +277,7 @@
     return CGOpenMPRuntimeNVPTX::ExecutionMode::Generic;
   case OMPD_target_parallel:
   case OMPD_target_parallel_for:
+  case OMPD_target_parallel_for_simd:
     return CGOpenMPRuntimeNVPTX::ExecutionMode::Spmd;
   default:
     llvm_unreachable("Unsupported directive on NVPTX device.");