[OpenMP] Sema and parsing for 'teams distribute' pragma

This patch is to implement sema and parsing for 'teams distribute' pragma.

Differential Revision: https://reviews.llvm.org/D23189

llvm-svn: 277818
diff --git a/clang/test/OpenMP/teams_distribute_lastprivate_messages.cpp b/clang/test/OpenMP/teams_distribute_lastprivate_messages.cpp
new file mode 100644
index 0000000..b892141
--- /dev/null
+++ b/clang/test/OpenMP/teams_distribute_lastprivate_messages.cpp
@@ -0,0 +1,272 @@
+// RUN: %clang_cc1 -verify -fopenmp %s
+
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+struct S1; // expected-note 2 {{declared here}} expected-note 2 {{forward declaration of 'S1'}}
+extern S1 a;
+class S2 {
+  mutable int a;
+
+public:
+  S2() : a(0) {}
+  S2(S2 &s2) : a(s2.a) {}
+  const S2 &operator =(const S2&) const;
+  S2 &operator =(const S2&);
+  static float S2s; // expected-note {{static data member is predetermined as shared}}
+  static const float S2sc;
+};
+const float S2::S2sc = 0; // expected-note {{static data member is predetermined as shared}}
+const S2 b;
+const S2 ba[5];
+class S3 {
+  int a;
+  S3 &operator=(const S3 &s3); // expected-note 2 {{implicitly declared private here}}
+
+public:
+  S3() : a(0) {}
+  S3(S3 &s3) : a(s3.a) {}
+};
+const S3 c;         // expected-note {{global variable is predetermined as shared}}
+const S3 ca[5];     // expected-note {{global variable is predetermined as shared}}
+extern const int f; // expected-note {{global variable is predetermined as shared}}
+class S4 {
+  int a;
+  S4();             // expected-note 3 {{implicitly declared private here}}
+  S4(const S4 &s4);
+
+public:
+  S4(int v) : a(v) {}
+};
+class S5 {
+  int a;
+  S5() : a(0) {} // expected-note {{implicitly declared private here}}
+
+public:
+  S5(const S5 &s5) : a(s5.a) {}
+  S5(int v) : a(v) {}
+};
+class S6 {
+  int a;
+  S6() : a(0) {}
+
+public:
+  S6(const S6 &s6) : a(s6.a) {}
+  S6(int v) : a(v) {}
+};
+
+S3 h;
+#pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
+
+template <class I, class C>
+int foomain(int argc, char **argv) {
+  I e(4);
+  I g(5);
+  int i;
+  int &j = i;
+#pragma omp target
+#pragma omp teams distribute lastprivate // expected-error {{expected '(' after 'lastprivate'}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute lastprivate( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute lastprivate() // expected-error {{expected expression}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(argc)
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(S1) // expected-error {{'S1' does not refer to a value}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(a, b) // expected-error {{lastprivate variable with incomplete type 'S1'}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(argv[1]) // expected-error {{expected variable name}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(e, g) // expected-error 2 {{calling a private constructor of class 'S4'}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(h) // expected-error {{threadprivate or thread local variable cannot be lastprivate}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+  int v = 0;
+#pragma omp target
+#pragma omp teams distribute lastprivate(i)
+  for (int k = 0; k < argc; ++k) {
+    i = k;
+    v += i;
+  }
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(j) private(i)
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(i)
+  for (int k = 0; k < argc; ++k) ++k;
+
+  return 0;
+}
+
+void bar(S4 a[2]) {
+#pragma omp target
+#pragma omp teams distribute lastprivate(a)
+  for (int i = 0; i < 2; ++i) foo();
+}
+
+namespace A {
+double x;
+#pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
+}
+namespace B {
+using A::x;
+}
+
+int main(int argc, char **argv) {
+  const int d = 5;       // expected-note {{constant variable is predetermined as shared}}
+  const int da[5] = {0}; // expected-note {{constant variable is predetermined as shared}}
+  S4 e(4);
+  S5 g(5);
+  S3 m;
+  S6 n(2);
+  int i;
+  int &j = i;
+#pragma omp target
+#pragma omp teams distribute lastprivate // expected-error {{expected '(' after 'lastprivate'}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate() // expected-error {{expected expression}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(argc)
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(S1) // expected-error {{'S1' does not refer to a value}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(a, b, c, d, f) // expected-error {{lastprivate variable with incomplete type 'S1'}} expected-error 3 {{shared variable cannot be lastprivate}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(argv[1]) // expected-error {{expected variable name}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(2 * 2) // expected-error {{expected variable name}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(ba)
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(ca) // expected-error {{shared variable cannot be lastprivate}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(da) // expected-error {{shared variable cannot be lastprivate}}
+  for (i = 0; i < argc; ++i) foo();
+
+  int xa;
+#pragma omp target
+#pragma omp teams distribute lastprivate(xa) // OK
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(S2::S2s) // expected-error {{shared variable cannot be lastprivate}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(S2::S2sc) // expected-error {{shared variable cannot be lastprivate}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(e, g) // expected-error {{calling a private constructor of class 'S4'}} expected-error {{calling a private constructor of class 'S5'}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(m) // expected-error {{'operator=' is a private member of 'S3'}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(h) // expected-error {{threadprivate or thread local variable cannot be lastprivate}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(B::x) // expected-error {{threadprivate or thread local variable cannot be lastprivate}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute private(xa), lastprivate(xa) // expected-error {{private variable cannot be lastprivate}} expected-note {{defined as private}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(xa)
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(j)
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute firstprivate(m) lastprivate(m) // expected-error {{'operator=' is a private member of 'S3'}}
+  for (i = 0; i < argc; ++i) foo();
+
+#pragma omp target
+#pragma omp teams distribute lastprivate(n) firstprivate(n) // OK
+  for (i = 0; i < argc; ++i) foo();
+
+  static int si;
+#pragma omp target
+#pragma omp teams distribute  lastprivate(si) // OK
+  for (i = 0; i < argc; ++i) si = i + 1;
+
+  return foomain<S4, S5>(argc, argv); // expected-note {{in instantiation of function template specialization 'foomain<S4, S5>' requested here}}
+}