[OpenMP] Check for at least one map clause on target data directive.

Summary:
Adds the following restriction in the OpenMP specifications.

OpenMP [2.10.1, Restrictions, p. 97]
At least one map clause must appear on the directive.

Reviewers: ABataev

Differential Revision: http://reviews.llvm.org/D16341

llvm-svn: 258425

1 files changed, 17 insertions, 16 deletions

diff --git a/clang/test/OpenMP/target_data_if_messages.cpp b/clang/test/OpenMP/target_data_if_messages.cpp
index 77edefa48b8..ec6fe269215 100644
--- a/clang/test/OpenMP/target_data_if_messages.cpp
+++ b/clang/test/OpenMP/target_data_if_messages.cpp
@@ -10,22 +10,23 @@ bool foobool(int argc) {
 struct S1; // expected-note {{declared here}}
 
 int main(int argc, char **argv) {
-  #pragma omp target data if // expected-error {{expected '(' after 'if'}}
-  #pragma omp target data if ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
-  #pragma omp target data if () // expected-error {{expected expression}}
-  #pragma omp target data if (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
-  #pragma omp target data if (argc)) // expected-warning {{extra tokens at the end of '#pragma omp target data' are ignored}}
-  #pragma omp target data if (argc > 0 ? argv[1] : argv[2])
-  #pragma omp target data if (argc + argc)
-  #pragma omp target data if (foobool(argc)), if (true) // expected-error {{directive '#pragma omp target data' cannot contain more than one 'if' clause}}
-  #pragma omp target data if (S1) // expected-error {{'S1' does not refer to a value}}
-  #pragma omp target data if (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
-  #pragma omp target data if(target data : // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
-  #pragma omp target data if(target data : argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
-  #pragma omp target data if(target data : argc)
-  #pragma omp target data if(target data : argc) if (for:argc) // expected-error {{directive name modifier 'for' is not allowed for '#pragma omp target data'}}
-  #pragma omp target data if(target data : argc) if (target data:argc) // expected-error {{directive '#pragma omp target data' cannot contain more than one 'if' clause with 'target data' name modifier}}
-  #pragma omp target data if(target data : argc) if (argc) // expected-error {{no more 'if' clause is allowed}} expected-note {{previous clause with directive name modifier specified here}}
+  int a;
+  #pragma omp target data map(to: a) if // expected-error {{expected '(' after 'if'}}
+  #pragma omp target data map(to: a) if ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp target data map(to: a) if () // expected-error {{expected expression}}
+  #pragma omp target data map(to: a) if (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp target data map(to: a) if (argc)) // expected-warning {{extra tokens at the end of '#pragma omp target data' are ignored}}
+  #pragma omp target data map(to: a) if (argc > 0 ? argv[1] : argv[2])
+  #pragma omp target data map(to: a) if (argc + argc)
+  #pragma omp target data map(to: a) if (foobool(argc)), if (true) // expected-error {{directive '#pragma omp target data' cannot contain more than one 'if' clause}}
+  #pragma omp target data map(to: a) if (S1) // expected-error {{'S1' does not refer to a value}}
+  #pragma omp target data map(to: a) if (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp target data map(to: a) if(target data : // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp target data map(to: a) if(target data : argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp target data map(to: a) if(target data : argc)
+  #pragma omp target data map(to: a) if(target data : argc) if (for:argc) // expected-error {{directive name modifier 'for' is not allowed for '#pragma omp target data'}}
+  #pragma omp target data map(to: a) if(target data : argc) if (target data:argc) // expected-error {{directive '#pragma omp target data' cannot contain more than one 'if' clause with 'target data' name modifier}}
+  #pragma omp target data map(to: a) if(target data : argc) if (argc) // expected-error {{no more 'if' clause is allowed}} expected-note {{previous clause with directive name modifier specified here}}
   foo();
 
   return 0;