[OPENMP] 'if' clause support (no CodeGen support)

llvm-svn: 201297

2 files changed, 49 insertions, 6 deletions

diff --git a/clang/test/OpenMP/parallel_ast_print.cpp b/clang/test/OpenMP/parallel_ast_print.cpp
index f2fd2f7b69f..c197031c592 100644
--- a/clang/test/OpenMP/parallel_ast_print.cpp
+++ b/clang/test/OpenMP/parallel_ast_print.cpp
@@ -15,7 +15,7 @@ T tmain(T argc, T *argv) {
   static T a;
 #pragma omp parallel
   a=2;
-#pragma omp parallel default(none), private(argc,b) firstprivate(argv) shared (d)
+#pragma omp parallel default(none), private(argc,b) firstprivate(argv) shared (d) if (argc > 0)
   foo();
   return 0;
 }
@@ -24,21 +24,21 @@ T tmain(T argc, T *argv) {
 // CHECK-NEXT: static int a;
 // CHECK-NEXT: #pragma omp parallel
 // CHECK-NEXT: a = 2;
-// CHECK-NEXT: #pragma omp parallel default(none) private(argc,b) firstprivate(argv) shared(d)
+// CHECK-NEXT: #pragma omp parallel default(none) private(argc,b) firstprivate(argv) shared(d) if(argc > 0)
 // CHECK-NEXT: foo()
 // CHECK: template <typename T = float> float tmain(float argc, float *argv) {
 // CHECK-NEXT: float b = argc, c, d, e, f, g;
 // CHECK-NEXT: static float a;
 // CHECK-NEXT: #pragma omp parallel
 // CHECK-NEXT: a = 2;
-// CHECK-NEXT: #pragma omp parallel default(none) private(argc,b) firstprivate(argv) shared(d)
+// CHECK-NEXT: #pragma omp parallel default(none) private(argc,b) firstprivate(argv) shared(d) if(argc > 0)
 // CHECK-NEXT: foo()
 // CHECK: template <typename T> T tmain(T argc, T *argv) {
 // CHECK-NEXT: T b = argc, c, d, e, f, g;
 // CHECK-NEXT: static T a;
 // CHECK-NEXT: #pragma omp parallel
 // CHECK-NEXT: a = 2;
-// CHECK-NEXT: #pragma omp parallel default(none) private(argc,b) firstprivate(argv) shared(d)
+// CHECK-NEXT: #pragma omp parallel default(none) private(argc,b) firstprivate(argv) shared(d) if(argc > 0)
 // CHECK-NEXT: foo()
 
 int main (int argc, char **argv) {
@@ -50,8 +50,8 @@ int main (int argc, char **argv) {
 // CHECK-NEXT: #pragma omp parallel
   a=2;
 // CHECK-NEXT: a = 2;
-#pragma omp parallel default(none), private(argc,b) firstprivate(argv)
-// CHECK-NEXT: #pragma omp parallel default(none) private(argc,b) firstprivate(argv)
+#pragma omp parallel default(none), private(argc,b) firstprivate(argv) if (argc > 0)
+// CHECK-NEXT: #pragma omp parallel default(none) private(argc,b) firstprivate(argv) if(argc > 0)
   foo();
 // CHECK-NEXT: foo();
   return tmain(b, &b) + tmain(x, &x);
diff --git a/clang/test/OpenMP/parallel_if_messages.cpp b/clang/test/OpenMP/parallel_if_messages.cpp
new file mode 100644
index 00000000000..eb4180d7f54
--- /dev/null
+++ b/clang/test/OpenMP/parallel_if_messages.cpp
@@ -0,0 +1,43 @@
+// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 %s
+
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+struct S1; // expected-note {{declared here}}
+
+template <class T, class S> // expected-note {{declared here}}
+int tmain(T argc, S **argv) {
+  #pragma omp parallel if // expected-error {{expected '(' after 'if'}}
+  #pragma omp parallel if ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp parallel if () // expected-error {{expected expression}}
+  #pragma omp parallel if (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp parallel if (argc)) // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
+  #pragma omp parallel if (argc > 0 ? argv[1] : argv[2])
+  #pragma omp parallel if (foobool(argc)), if (true) // expected-error {{directive '#pragma omp parallel' cannot contain more than one 'if' clause}}
+  #pragma omp parallel if (S) // expected-error {{'S' does not refer to a value}}
+  #pragma omp parallel if (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp parallel if(argc)
+  foo();
+
+  return 0;
+}
+
+int main(int argc, char **argv) {
+  #pragma omp parallel if // expected-error {{expected '(' after 'if'}}
+  #pragma omp parallel if ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp parallel if () // expected-error {{expected expression}}
+  #pragma omp parallel if (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp parallel if (argc)) // expected-warning {{extra tokens at the end of '#pragma omp parallel' are ignored}}
+  #pragma omp parallel if (argc > 0 ? argv[1] : argv[2])
+  #pragma omp parallel if (foobool(argc)), if (true) // expected-error {{directive '#pragma omp parallel' cannot contain more than one 'if' clause}}
+  #pragma omp parallel if (S1) // expected-error {{'S1' does not refer to a value}}
+  #pragma omp parallel if (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp parallel if(if(tmain(argc, argv) // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+
+  return tmain(argc, argv);
+}