[OPENMP] Initial support for 'depend' clause (4.0).

Parsing and sema analysis (without support for array sections in arguments) for 'depend' clause (used in 'task' directive, OpenMP 4.0).

llvm-svn: 240409
diff --git a/clang/test/OpenMP/task_ast_print.cpp b/clang/test/OpenMP/task_ast_print.cpp
index 55407c1..5fd4103 100644
--- a/clang/test/OpenMP/task_ast_print.cpp
+++ b/clang/test/OpenMP/task_ast_print.cpp
@@ -33,7 +33,7 @@
   T b = argc, c, d, e, f, g;
   static T a;
   S<T> s;
-#pragma omp task untied
+#pragma omp task untied depend(in : argc)
   a = 2;
 #pragma omp task default(none), private(argc, b) firstprivate(argv) shared(d) if (argc > 0) final(S<T>::TS > 0)
   foo();
@@ -46,7 +46,7 @@
 // CHECK-NEXT: int b = argc, c, d, e, f, g;
 // CHECK-NEXT: static int a;
 // CHECK-NEXT: S<int> s;
-// CHECK-NEXT: #pragma omp task untied
+// CHECK-NEXT: #pragma omp task untied depend(in : argc)
 // CHECK-NEXT: a = 2;
 // CHECK-NEXT: #pragma omp task default(none) private(argc,b) firstprivate(argv) shared(d) if(argc > 0) final(S<int>::TS > 0)
 // CHECK-NEXT: foo()
@@ -56,7 +56,7 @@
 // CHECK-NEXT: long b = argc, c, d, e, f, g;
 // CHECK-NEXT: static long a;
 // CHECK-NEXT: S<long> s;
-// CHECK-NEXT: #pragma omp task untied
+// CHECK-NEXT: #pragma omp task untied depend(in : argc)
 // CHECK-NEXT: a = 2;
 // CHECK-NEXT: #pragma omp task default(none) private(argc,b) firstprivate(argv) shared(d) if(argc > 0) final(S<long>::TS > 0)
 // CHECK-NEXT: foo()
@@ -66,7 +66,7 @@
 // CHECK-NEXT: T b = argc, c, d, e, f, g;
 // CHECK-NEXT: static T a;
 // CHECK-NEXT: S<T> s;
-// CHECK-NEXT: #pragma omp task untied
+// CHECK-NEXT: #pragma omp task untied depend(in : argc)
 // CHECK-NEXT: a = 2;
 // CHECK-NEXT: #pragma omp task default(none) private(argc,b) firstprivate(argv) shared(d) if(argc > 0) final(S<T>::TS > 0)
 // CHECK-NEXT: foo()
@@ -82,12 +82,12 @@
 #pragma omp threadprivate(a)
   Enum ee;
 // CHECK: Enum ee;
-#pragma omp task untied mergeable
-  // CHECK-NEXT: #pragma omp task untied mergeable
+#pragma omp task untied mergeable depend(out:argv[1])
+  // CHECK-NEXT: #pragma omp task untied mergeable depend(out : argv[1])
   a = 2;
 // CHECK-NEXT: a = 2;
-#pragma omp task default(none), private(argc, b) firstprivate(argv) if (argc > 0) final(a > 0)
-  // CHECK-NEXT: #pragma omp task default(none) private(argc,b) firstprivate(argv) if(argc > 0) final(a > 0)
+#pragma omp task default(none), private(argc, b) firstprivate(argv) if (argc > 0) final(a > 0) depend(inout : a)
+  // CHECK-NEXT: #pragma omp task default(none) private(argc,b) firstprivate(argv) if(argc > 0) final(a > 0) depend(inout : a)
   foo();
   // CHECK-NEXT: foo();
   return tmain<int, 5>(b, &b) + tmain<long, 1>(x, &x);
diff --git a/clang/test/OpenMP/task_depend_messages.cpp b/clang/test/OpenMP/task_depend_messages.cpp
new file mode 100644
index 0000000..152350c
--- /dev/null
+++ b/clang/test/OpenMP/task_depend_messages.cpp
@@ -0,0 +1,39 @@
+// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 -o - %s
+
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+struct S1; // expected-note {{declared here}}
+
+class vector {
+  public:
+    int operator[](int index) { return 0; }
+};
+
+int main(int argc, char **argv) {
+  vector vec;
+  typedef float V __attribute__((vector_size(16)));
+  V a;
+
+  #pragma omp task depend // expected-error {{expected '(' after 'depend'}}
+  #pragma omp task depend ( // expected-error {{expected 'in', 'out' or 'inout' in OpenMP clause 'depend'}} expected-error {{expected ')'}} expected-note {{to match this '('}} expected-warning {{missing ':' after dependency type - ignoring}}
+  #pragma omp task depend () // expected-error {{expected 'in', 'out' or 'inout' in OpenMP clause 'depend'}} expected-warning {{missing ':' after dependency type - ignoring}}
+  #pragma omp task depend (argc // expected-error {{expected 'in', 'out' or 'inout' in OpenMP clause 'depend'}} expected-warning {{missing ':' after dependency type - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp task depend (in : argc)) // expected-warning {{extra tokens at the end of '#pragma omp task' are ignored}}
+  #pragma omp task depend (out: ) // expected-error {{expected expression}}
+  #pragma omp task depend (inout : foobool(argc)), depend (in, argc) // expected-error {{expected variable name, array element or array section}} expected-warning {{missing ':' after dependency type - ignoring}} expected-error {{expected expression}}
+  #pragma omp task depend (out :S1) // expected-error {{'S1' does not refer to a value}}
+  #pragma omp task depend(in : argv[1][1] = '2') // expected-error {{expected variable name, array element or array section}}
+  #pragma omp task depend (in : vec[1]) // expected-error {{expected variable name, array element or array section}}
+  #pragma omp task depend (in : argv[0])
+  #pragma omp task depend (in : ) // expected-error {{expected expression}}
+  #pragma omp task depend (in : main) // expected-error {{expected variable name, array element or array section}}
+  #pragma omp task depend(in : a[0]) // expected-error{{expected variable name, array element or array section}}
+  foo();
+
+  return 0;
+}