[OPENMP] Codegen for 'taskwait' directive.

Emit the following code for 'taskwait' directive within tied task:
call i32 @__kmpc_omp_taskwait(<loc>, i32 <thread_id>);
Differential Revision: http://reviews.llvm.org/D9245

llvm-svn: 235836

1 files changed, 31 insertions, 0 deletions

diff --git a/clang/test/OpenMP/taskwait_codegen.cpp b/clang/test/OpenMP/taskwait_codegen.cpp
new file mode 100644
index 00000000000..f25812659e1
--- /dev/null
+++ b/clang/test/OpenMP/taskwait_codegen.cpp
@@ -0,0 +1,31 @@
+// RUN: %clang_cc1 -verify -triple x86_64-apple-darwin10 -fopenmp=libiomp5 -x c++ -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -fopenmp=libiomp5 -x c++ -triple x86_64-apple-darwin10 -emit-pch -o %t %s
+// RUN: %clang_cc1 -fopenmp=libiomp5 -x c++ -triple x86_64-apple-darwin10 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s
+// expected-no-diagnostics
+
+#ifndef HEADER
+#define HEADER
+
+void foo() {}
+
+template <class T>
+T tmain(T argc) {
+  static T a;
+#pragma omp taskwait
+  return a + argc;
+}
+int main(int argc, char **argv) {
+#pragma omp taskwait
+  return tmain(argc);
+}
+
+// CHECK-LABEL: @main
+// CHECK: [[GTID:%.+]] = call i32 @__kmpc_global_thread_num(%{{.+}}* @{{.+}})
+// CHECK: call i32 @__kmpc_omp_taskwait(%{{.+}}* @{{.+}}, i32 [[GTID]])
+
+// CHECK-LABEL: tmain
+// CHECK: [[GTID:%.+]] = call i32 @__kmpc_global_thread_num(%{{.+}}* @{{.+}})
+// CHECK: call i32 @__kmpc_omp_taskwait(%{{.+}}* @{{.+}}, i32 [[GTID]])
+
+
+#endif