[OPENMP] Add codegen for target data constructs with `nowait` clause.

Added codegen for the `nowait` clause in target data constructs.

llvm-svn: 320717
diff --git a/clang/test/OpenMP/target_exit_data_codegen.cpp b/clang/test/OpenMP/target_exit_data_codegen.cpp
index ce13c52..9359e3b 100644
--- a/clang/test/OpenMP/target_exit_data_codegen.cpp
+++ b/clang/test/OpenMP/target_exit_data_codegen.cpp
@@ -39,7 +39,7 @@
 
   // Region 00
   // CK1-NOT: __tgt_target_data_begin
-  // CK1-DAG: call void @__tgt_target_data_end(i64 [[DEV:%[^,]+]], i32 1, i8** [[GEPBP:%.+]], i8** [[GEPP:%.+]], {{.+}}getelementptr {{.+}}[1 x i{{.+}}]* [[SIZE00]], {{.+}}getelementptr {{.+}}[1 x i{{.+}}]* [[MTYPE00]]{{.+}})
+  // CK1-DAG: call void @__tgt_target_data_end_nowait(i64 [[DEV:%[^,]+]], i32 1, i8** [[GEPBP:%.+]], i8** [[GEPP:%.+]], {{.+}}getelementptr {{.+}}[1 x i{{.+}}]* [[SIZE00]], {{.+}}getelementptr {{.+}}[1 x i{{.+}}]* [[MTYPE00]]{{.+}})
   // CK1-DAG: [[DEV]] = sext i32 [[DEVi32:%[^,]+]] to i64
   // CK1-DAG: [[DEVi32]] = load i32, i32* %{{[^,]+}},
   // CK1-DAG: [[GEPBP]] = getelementptr inbounds {{.+}}[[BP:%[^,]+]]
@@ -53,7 +53,7 @@
   // CK1-DAG: store [100 x double]* @gc, [100 x double]** [[PC0]]
 
   // CK1: %{{.+}} = add nsw i32 %{{[^,]+}}, 1
-  #pragma omp target exit data if(1+3-5) device(arg) map(from: gc)
+  #pragma omp target exit data if(1+3-5) device(arg) map(from: gc) nowait
   {++arg;}
 
   // Region 01