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

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

This patch is originated by Carlo Bertolli.

Differential Revision: https://reviews.llvm.org/D23528


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@279003 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 293 insertions, 0 deletions

diff --git a/test/OpenMP/teams_distribute_simd_linear_messages.cpp b/test/OpenMP/teams_distribute_simd_linear_messages.cpp
new file mode 100644
index 0000000000..6bfdb16274
--- /dev/null
+++ b/test/OpenMP/teams_distribute_simd_linear_messages.cpp
@@ -0,0 +1,293 @@
+// RUN: %clang_cc1 -verify -fopenmp %s
+
+namespace X {
+  int x;
+};
+
+struct B {
+  static int ib; // expected-note {{'B::ib' declared here}}
+  static int bfoo() { return 8; }
+};
+
+int bfoo() { return 4; }
+
+int z;
+const int C1 = 1;
+const int C2 = 2;
+void test_linear_colons()
+{
+  int B = 0;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(B:bfoo())
+  for (int i = 0; i < 10; ++i) ;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(B::ib:B:bfoo()) // expected-error {{unexpected ':' in nested name specifier; did you mean '::'}}
+  for (int i = 0; i < 10; ++i) ;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(B:ib) // expected-error {{use of undeclared identifier 'ib'; did you mean 'B::ib'}}
+  for (int i = 0; i < 10; ++i) ;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(z:B:ib) // expected-error {{unexpected ':' in nested name specifier; did you mean '::'?}}
+  for (int i = 0; i < 10; ++i) ;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(B:B::bfoo())
+  for (int i = 0; i < 10; ++i) ;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(X::x : ::z)
+  for (int i = 0; i < 10; ++i) ;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(B,::z, X::x)
+  for (int i = 0; i < 10; ++i) ;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(::z)
+  for (int i = 0; i < 10; ++i) ;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(B::bfoo()) // expected-error {{expected variable name}}
+  for (int i = 0; i < 10; ++i) ;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(B::ib,B:C1+C2)
+  for (int i = 0; i < 10; ++i) ;
+}
+
+template<int L, class T, class N> T test_template(T* arr, N num) {
+  N i;
+  T sum = (T)0;
+  T ind2 = - num * L; // expected-note {{'ind2' defined here}}
+
+#pragma omp target
+#pragma omp teams distribute simd linear(ind2:L) // expected-error {{argument of a linear clause should be of integral or pointer type}}
+  for (i = 0; i < num; ++i) {
+    T cur = arr[(int)ind2];
+    ind2 += L;
+    sum += cur;
+  }
+  return T();
+}
+
+template<int LEN> int test_warn() {
+  int ind2 = 0;
+  #pragma omp target
+  #pragma omp teams distribute simd linear(ind2:LEN) // expected-warning {{zero linear step (ind2 should probably be const)}}
+  for (int i = 0; i < 100; i++) {
+    ind2 += LEN;
+  }
+  return ind2;
+}
+
+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) { }
+};
+const S2 b; // expected-note 2 {{'b' defined here}}
+const S2 ba[5];
+class S3 {
+  int a;
+public:
+  S3():a(0) { }
+};
+const S3 ca[5];
+class S4 {
+  int a;
+  S4();
+public:
+  S4(int v):a(v) { }
+};
+class S5 {
+  int a;
+  S5():a(0) {}
+public:
+  S5(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(I argc, C **argv) {
+  I e(4);
+  I g(5);
+  int i;
+  int &j = i;
+
+#pragma omp target
+#pragma omp teams distribute simd linear // expected-error {{expected '(' after 'linear'}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear ( // 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 simd linear () // expected-error {{expected expression}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear (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 simd linear (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 simd linear (argc : 5)
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear (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 simd linear (a, b:B::ib) // expected-error {{linear variable with incomplete type 'S1'}} expected-error {{const-qualified variable cannot be linear}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear (argv[1]) // expected-error {{expected variable name}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(e, g)
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(h) // expected-error {{threadprivate or thread local variable cannot be linear}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(i)
+  for (int k = 0; k < argc; ++k) ++k;
+
+  #pragma omp parallel
+  {
+    int v = 0;
+    int i;
+    #pragma omp target
+    #pragma omp teams distribute simd linear(v:i)
+    for (int k = 0; k < argc; ++k) { i = k; v += i; }
+  }
+
+#pragma omp target
+#pragma omp teams distribute simd linear(j)
+  for (int k = 0; k < argc; ++k) ++k;
+
+  int v = 0;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(v:j)
+  for (int k = 0; k < argc; ++k) { ++k; v += j; }
+
+#pragma omp target
+#pragma omp teams distribute simd linear(i)
+  for (int k = 0; k < argc; ++k) ++k;
+  return 0;
+}
+
+namespace A {
+double x;
+#pragma omp threadprivate(x) // expected-note {{defined as threadprivate or thread local}}
+}
+namespace C {
+using A::x;
+}
+
+int main(int argc, char **argv) {
+  double darr[100];
+  // expected-note@+1 {{in instantiation of function template specialization 'test_template<-4, double, int>' requested here}}
+  test_template<-4>(darr, 4);
+  // expected-note@+1 {{in instantiation of function template specialization 'test_warn<0>' requested here}}
+  test_warn<0>();
+
+  S4 e(4); // expected-note {{'e' defined here}}
+  S5 g(5); // expected-note {{'g' defined here}}
+  int i;
+  int &j = i;
+
+#pragma omp target
+#pragma omp teams distribute simd linear // expected-error {{expected '(' after 'linear'}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear ( // 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 simd linear () // expected-error {{expected expression}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear (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 simd linear (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 simd linear (argc)
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear (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 simd linear (a, b) // expected-error {{linear variable with incomplete type 'S1'}} expected-error {{const-qualified variable cannot be linear}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear (argv[1]) // expected-error {{expected variable name}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(e, g) // expected-error {{argument of a linear clause should be of integral or pointer type, not 'S4'}} expected-error {{argument of a linear clause should be of integral or pointer type, not 'S5'}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(h, C::x) // expected-error 2 {{threadprivate or thread local variable cannot be linear}}
+  for (int k = 0; k < argc; ++k) ++k;
+
+  #pragma omp parallel
+  {
+    int i;
+    #pragma omp target
+    #pragma omp teams distribute simd linear(i)
+      for (int k = 0; k < argc; ++k) ++k;
+
+    #pragma omp target
+    #pragma omp teams distribute simd linear(i : 4)
+      for (int k = 0; k < argc; ++k) { ++k; i += 4; }
+  }
+
+#pragma omp target
+#pragma omp teams distribute simd linear(j)
+  for (int k = 0; k < argc; ++k) ++k;
+
+#pragma omp target
+#pragma omp teams distribute simd linear(i)
+  for (int k = 0; k < argc; ++k) ++k;
+
+  foomain<int,char>(argc,argv); // expected-note {{in instantiation of function template specialization 'foomain<int, char>' requested here}}
+  return 0;
+}
+