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[PING][PATCH] Warn about unclosed pragma omp declare target.


Ping.
On 15 Aug 16:26, Ilya Tocar wrote:
> Ping.
> 
> On 29 Jul 18:45, Ilya Tocar wrote:
> > Hi,
> > 
> > As discussed here in https://gcc.gnu.org/ml/gcc/2014-01/msg00189.html
> > Gcc should complain about pragma omp declare target without
> > corresponding pragma omp end declare target. This patch adds a warning
> > for those cases.
> > Bootstraps/passes make-check.
> > Ok for trunk?
> > 
> > ChangeLog:
> > 
> > 2014-07-29  Ilya Tocar  <ilya.tocar@intel.com>
> > 
> > 	* c-decl.c (omp_declare_target_location_stack): New.
> > 	* c-lang.h (omp_declare_target_location_stack): Declare.
> > 	* c-parser.c (warn_unclosed_pragma_omp_target): New.
> > 	(c_parser_translation_unit): Call it.
> > 	(c_parser_omp_declare_target): Remeber location.
> > 	(c_parser_omp_end_declare_target): Forget location.
> > 
> > And ChangeLog for testsuite:
> > 
> > 2014-07-29  Ilya Tocar  <ilya.tocar@intel.com>
> > 
> > 	* gcc.dg/gomp//target-3.c: New testcase.
> > 
> > ---
> >  gcc/c/c-decl.c                       |  3 +++
> >  gcc/c/c-lang.h                       |  3 +++
> >  gcc/c/c-parser.c                     | 22 +++++++++++++++++++++-
> >  gcc/testsuite/gcc.dg/gomp/target-3.c | 33 +++++++++++++++++++++++++++++++++
> >  4 files changed, 60 insertions(+), 1 deletion(-)
> >  create mode 100644 gcc/testsuite/gcc.dg/gomp/target-3.c
> > 
> > diff --git a/gcc/c/c-decl.c b/gcc/c/c-decl.c
> > index 2a4b439..2dd5b2c 100644
> > --- a/gcc/c/c-decl.c
> > +++ b/gcc/c/c-decl.c
> > @@ -158,6 +158,9 @@ enum machine_mode c_default_pointer_mode = VOIDmode;
> >  /* If non-zero, implicit "omp declare target" attribute is added into the
> >     attribute lists.  */
> >  int current_omp_declare_target_attribute;
> > +
> > +/* Holds locations of currently open "omp declare target" pragmas.  */
> > +vec<location_t> omp_declare_target_location_stack;
> >  
> >  /* Each c_binding structure describes one binding of an identifier to
> >     a decl.  All the decls in a scope - irrespective of namespace - are
> > diff --git a/gcc/c/c-lang.h b/gcc/c/c-lang.h
> > index e974906..cef995c 100644
> > --- a/gcc/c/c-lang.h
> > +++ b/gcc/c/c-lang.h
> > @@ -59,4 +59,7 @@ struct GTY(()) language_function {
> >     attribute lists.  */
> >  extern GTY(()) int current_omp_declare_target_attribute;
> >  
> > +/* Holds locations of currently open "omp declare target" pragmas.  */
> > +extern vec<location_t> omp_declare_target_location_stack;
> > +
> >  #endif /* ! GCC_C_LANG_H */
> > diff --git a/gcc/c/c-parser.c b/gcc/c/c-parser.c
> > index e32bf04..0b96fe9 100644
> > --- a/gcc/c/c-parser.c
> > +++ b/gcc/c/c-parser.c
> > @@ -1255,6 +1255,8 @@ static bool c_parser_cilk_verify_simd (c_parser *, enum pragma_context);
> >  static tree c_parser_array_notation (location_t, c_parser *, tree, tree);
> >  static tree c_parser_cilk_clause_vectorlength (c_parser *, tree, bool);
> >  
> > +static void warn_unclosed_pragma_omp_target ();
> > +
> >  /* Parse a translation unit (C90 6.7, C99 6.9).
> >  
> >     translation-unit:
> > @@ -1290,6 +1292,8 @@ c_parser_translation_unit (c_parser *parser)
> >  	}
> >        while (c_parser_next_token_is_not (parser, CPP_EOF));
> >      }
> > +
> > +  warn_unclosed_pragma_omp_target ();
> >  }
> >  
> >  /* Parse an external declaration (C90 6.7, C99 6.9).
> > @@ -13068,8 +13072,10 @@ c_finish_omp_declare_simd (c_parser *parser, tree fndecl, tree parms,
> >  static void
> >  c_parser_omp_declare_target (c_parser *parser)
> >  {
> > +  location_t loc = c_parser_peek_token (parser)->location;
> >    c_parser_skip_to_pragma_eol (parser);
> >    current_omp_declare_target_attribute++;
> > +  omp_declare_target_location_stack.safe_push (loc);
> >  }
> >  
> >  static void
> > @@ -13104,7 +13110,10 @@ c_parser_omp_end_declare_target (c_parser *parser)
> >      error_at (loc, "%<#pragma omp end declare target%> without corresponding "
> >  		   "%<#pragma omp declare target%>");
> >    else
> > -    current_omp_declare_target_attribute--;
> > +    {
> > +      current_omp_declare_target_attribute--;
> > +      omp_declare_target_location_stack.pop ();
> > +    }
> >  }
> >  
> >  
> > @@ -14267,4 +14276,15 @@ c_parser_array_notation (location_t loc, c_parser *parser, tree initial_index,
> >    return value_tree;
> >  }
> >  
> > +static void
> > +warn_unclosed_pragma_omp_target ()
> > +{
> > +  int i;
> > +  for (i = 0; i < current_omp_declare_target_attribute; i++)
> > +    warning_at (omp_declare_target_location_stack[i], 0,
> > +		"%<#pragma omp declare target%> without corresponding "
> > +		"%<#pragma omp end declare target%>");
> > +  omp_declare_target_location_stack.release ();
> > +}
> > +
> >  #include "gt-c-c-parser.h"
> > diff --git a/gcc/testsuite/gcc.dg/gomp/target-3.c b/gcc/testsuite/gcc.dg/gomp/target-3.c
> > new file mode 100644
> > index 0000000..d50604f
> > --- /dev/null
> > +++ b/gcc/testsuite/gcc.dg/gomp/target-3.c
> > @@ -0,0 +1,33 @@
> > +/* { dg-do compile } */
> > +/* { dg-options "-fopenmp" } */
> > +
> > +#pragma omp declare target
> > +int tgtv = 6;
> > +
> > +int
> > +tgt (void)
> > +{
> > +  tgtv++;
> > +  return 0;
> > +}
> > +#pragma omp end declare target
> > +
> > +#pragma omp declare target        /* { dg-warning "'#pragma omp declare target' without corresponding '#pragma omp end declare target'" } */
> > +int tgtv1 = 6;
> > +#pragma omp declare target	  /* { dg-warning "'#pragma omp declare target' without corresponding '#pragma omp end declare target'" } */
> > +
> > +int
> > +tgt2 (void)
> > +{
> > +  tgtv1++;
> > +  return 0;
> > +}
> > +
> > +#pragma omp declare target
> > +int
> > +tgt3 (void)
> > +{
> > +  tgtv1++;
> > +  return 0;
> > +}
> > +#pragma omp end declare target
> > -- 
> > 1.8.3.1
> > 


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