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

Summary: This patch is an implementation of sema and parsing for the OpenMP composite pragma 'distribute simd'.

Differential Revision: http://reviews.llvm.org/D22007

llvm-svn: 274604

1 files changed, 154 insertions, 0 deletions

diff --git a/clang/test/OpenMP/distribute_simd_collapse_messages.cpp b/clang/test/OpenMP/distribute_simd_collapse_messages.cpp
new file mode 100644
index 00000000000..182a09a92b6
--- /dev/null
+++ b/clang/test/OpenMP/distribute_simd_collapse_messages.cpp
@@ -0,0 +1,154 @@
+// RUN: %clang_cc1 -verify -fopenmp %s
+// RUN: %clang_cc1 -verify -fopenmp -std=c++98 %s
+// RUN: %clang_cc1 -verify -fopenmp -std=c++11 %s
+
+void foo() {
+}
+
+#if __cplusplus >= 201103L
+// expected-note@+2 4 {{declared here}}
+#endif
+bool foobool(int argc) {
+  return argc;
+}
+
+struct S1; // expected-note {{declared here}}
+
+template <class T, typename S, int N, int ST> // expected-note {{declared here}}
+T tmain(T argc, S **argv) { //expected-note 2 {{declared here}}
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse // expected-error {{expected '(' after 'collapse'}}
+  for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse () // expected-error {{expected expression}}
+  for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
+#pragma omp target
+#pragma omp teams
+  // expected-error@+3 {{expected ')'}} expected-note@+3 {{to match this '('}}
+  // expected-error@+2 2 {{expression is not an integral constant expression}}
+  // expected-note@+1 2 {{read of non-const variable 'argc' is not allowed in a constant expression}}
+#pragma omp distribute simd collapse (argc 
+  for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
+#pragma omp target
+#pragma omp teams
+  // expected-error@+1 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
+#pragma omp distribute simd collapse (ST // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (1)) // expected-warning {{extra tokens at the end of '#pragma omp distribute simd' are ignored}}
+  for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse ((ST > 0) ? 1 + ST : 2) // expected-note 2 {{as specified in 'collapse' clause}}
+  for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST]; // expected-error 2 {{expected 2 for loops after '#pragma omp distribute simd', but found only 1}}
+  // expected-error@+8 2 {{directive '#pragma omp distribute simd' cannot contain more than one 'collapse' clause}}
+  // expected-error@+7 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
+  // expected-error@+6 2 {{expression is not an integral constant expression}}
+#if __cplusplus >= 201103L
+  // expected-note@+4 2 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
+#endif
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (foobool(argc)), collapse (true), collapse (-5)
+  for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (S) // expected-error {{'S' does not refer to a value}}
+  for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
+#if __cplusplus <= 199711L
+  // expected-error@+6 2 {{expression is not an integral constant expression}}
+#else
+  // expected-error@+4 2 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
+#endif
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (1)
+  for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (N) // expected-error {{argument to 'collapse' clause must be a strictly positive integer value}}
+  for (T i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (2) // expected-note {{as specified in 'collapse' clause}}
+  foo(); // expected-error {{expected 2 for loops after '#pragma omp distribute simd'}}
+  return argc;
+}
+
+int main(int argc, char **argv) {
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse // expected-error {{expected '(' after 'collapse'}}
+  for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse () // expected-error {{expected expression}}
+  for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (4 // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-note {{as specified in 'collapse' clause}}
+  for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4]; // expected-error {{expected 4 for loops after '#pragma omp distribute simd', but found only 1}}
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (2+2)) // expected-warning {{extra tokens at the end of '#pragma omp distribute simd' are ignored}}  expected-note {{as specified in 'collapse' clause}}
+  for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4]; // expected-error {{expected 4 for loops after '#pragma omp distribute simd', but found only 1}}
+  // expected-error@+6 {{expression is not an integral constant expression}}
+#if __cplusplus >= 201103L
+  // expected-note@+4 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
+#endif
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (foobool(1) > 0 ? 1 : 2)
+  for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
+  // expected-error@+8 {{expression is not an integral constant expression}}
+#if __cplusplus >= 201103L
+  // expected-note@+6{{non-constexpr function 'foobool' cannot be used in a constant expression}}
+#endif
+  // expected-error@+4 2 {{directive '#pragma omp distribute simd' cannot contain more than one 'collapse' clause}}
+  // expected-error@+3 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (foobool(argc)), collapse (true), collapse (-5) 
+  for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (S1) // expected-error {{'S1' does not refer to a value}}
+  for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
+#if __cplusplus <= 199711L
+  // expected-error@+6 {{expression is not an integral constant expression}}
+#else
+  // expected-error@+4 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
+#endif
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
+  // expected-error@+5 {{statement after '#pragma omp distribute simd' must be a for loop}}
+  // expected-note@+3 {{in instantiation of function template specialization 'tmain<int, char, -1, -2>' requested here}}
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse(collapse(tmain<int, char, -1, -2>(argc, argv) // expected-error 2 {{expected ')'}} expected-note 2 {{to match this '('}}
+  foo();
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute simd collapse (2) // expected-note {{as specified in 'collapse' clause}}
+  foo(); // expected-error {{expected 2 for loops after '#pragma omp distribute simd'}}
+  // expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, 1, 0>' requested here}}
+  return tmain<int, char, 1, 0>(argc, argv);
+}
+