diff options
Diffstat (limited to 'gcc-4.9/gcc/c-family/c-cilkplus.c')
-rw-r--r-- | gcc-4.9/gcc/c-family/c-cilkplus.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/c-family/c-cilkplus.c b/gcc-4.9/gcc/c-family/c-cilkplus.c new file mode 100644 index 000000000..1a16f6690 --- /dev/null +++ b/gcc-4.9/gcc/c-family/c-cilkplus.c @@ -0,0 +1,93 @@ +/* This file contains routines to construct and validate Cilk Plus + constructs within the C and C++ front ends. + + Copyright (C) 2013-2014 Free Software Foundation, Inc. + Contributed by Aldy Hernandez <aldyh@redhat.com>. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 3, or (at your option) +any later version. + +GCC is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include "tree.h" +#include "c-common.h" + +/* Validate the body of a _Cilk_for construct or a <#pragma simd> for + loop. + + Returns true if there were no errors, false otherwise. */ + +bool +c_check_cilk_loop (location_t loc, tree decl) +{ + if (TREE_THIS_VOLATILE (decl)) + { + error_at (loc, "iteration variable cannot be volatile"); + return false; + } + return true; +} + +/* Validate and emit code for <#pragma simd> clauses. */ + +tree +c_finish_cilk_clauses (tree clauses) +{ + for (tree c = clauses; c; c = OMP_CLAUSE_CHAIN (c)) + { + tree prev = clauses; + + /* If a variable appears in a linear clause it cannot appear in + any other OMP clause. */ + if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LINEAR) + for (tree c2 = clauses; c2; c2 = OMP_CLAUSE_CHAIN (c2)) + { + if (c == c2) + continue; + enum omp_clause_code code = OMP_CLAUSE_CODE (c2); + + switch (code) + { + case OMP_CLAUSE_LINEAR: + case OMP_CLAUSE_PRIVATE: + case OMP_CLAUSE_FIRSTPRIVATE: + case OMP_CLAUSE_LASTPRIVATE: + case OMP_CLAUSE_REDUCTION: + break; + + case OMP_CLAUSE_SAFELEN: + goto next; + + default: + gcc_unreachable (); + } + + if (OMP_CLAUSE_DECL (c) == OMP_CLAUSE_DECL (c2)) + { + error_at (OMP_CLAUSE_LOCATION (c2), + "variable appears in more than one clause"); + inform (OMP_CLAUSE_LOCATION (c), + "other clause defined here"); + // Remove problematic clauses. + OMP_CLAUSE_CHAIN (prev) = OMP_CLAUSE_CHAIN (c2); + } + next: + prev = c2; + } + } + return clauses; +} |