[committed] Fix -fopenmp-simd #pragma omp target handling (PR c++/79512)

[Jakub Jelinek]

Hi!

Both C and C++ FE had forgotten case when #pragma omp target
is not followed by any identifier token.  We need to ignore the pragma
in that case the same as we ignore it e.g. for #pragma omp target data
etc.

Bootstrapped/regtested on x86_64-linux and i686-linux, committed to trunk.

2017-02-16  Jakub Jelinek  <ja...@redhat.com>

        PR c++/79512
c/
        * c-parser.c (c_parser_omp_target): For -fopenmp-simd
        ignore #pragma omp target even when not followed by identifier.
cp/
        * parser.c (cp_parser_omp_target): For -fopenmp-simd
        ignore #pragma omp target even when not followed by identifier.
testsuite/
        * c-c++-common/gomp/pr79512.c: New test.

--- gcc/c/c-parser.c.jj 2017-02-13 22:55:31.000000000 +0100
+++ gcc/c/c-parser.c    2017-02-15 15:48:19.688854692 +0100
@@ -16505,6 +16505,11 @@ c_parser_omp_target (c_parser *parser, e
          return c_parser_omp_target_update (loc, parser, context);
        }
     }
+  if (!flag_openmp) /* flag_openmp_simd  */
+    {
+      c_parser_skip_to_pragma_eol (parser, false);
+      return false;
+    }
 
   stmt = make_node (OMP_TARGET);
   TREE_TYPE (stmt) = void_type_node;
--- gcc/cp/parser.c.jj  2017-02-14 20:34:48.000000000 +0100
+++ gcc/cp/parser.c     2017-02-15 15:49:32.803895243 +0100
@@ -35993,6 +35993,11 @@ cp_parser_omp_target (cp_parser *parser,
          return cp_parser_omp_target_update (parser, pragma_tok, context);
        }
     }
+  if (!flag_openmp)  /* flag_openmp_simd  */
+    {
+      cp_parser_skip_to_pragma_eol (parser, pragma_tok);
+      return false;
+    }
 
   stmt = make_node (OMP_TARGET);
   TREE_TYPE (stmt) = void_type_node;
--- gcc/testsuite/c-c++-common/gomp/pr79512.c.jj        2017-02-15 
15:51:33.835307012 +0100
+++ gcc/testsuite/c-c++-common/gomp/pr79512.c   2017-02-15 15:51:12.000000000 
+0100
@@ -0,0 +1,14 @@
+/* PR c++/79512 */
+/* { dg-options "-fopenmp-simd" } */
+
+void
+foo (void)
+{
+  #pragma omp target
+  #pragma omp teams
+  {
+    int i;
+    for (i = 0; i < 10; i++)
+      ;
+  }
+}

        Jakub