openmp/tools/archer/tests/worksharing/ordered.c

   1 /*
   2  * ordered.c -- Archer testcase
   3  */
   4
   5 //===----------------------------------------------------------------------===//
   6 //
   7 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   8 //
   9 // See tools/archer/LICENSE.txt for details.
  10 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14
  15 // RUN: %libarcher-compile-and-run | FileCheck %s
  16 // REQUIRES: tsan
  17 #include <omp.h>
  18 #include <stdio.h>
  19
  20 #define NUM_THREADS 2
  21
  22 int main(int argc, char *argv[]) {
  23   int var = 0;
  24   int i;
  25
  26 #pragma omp parallel for ordered num_threads(NUM_THREADS) shared(var)
  27   for (i = 0; i < NUM_THREADS; i++) {
  28 #pragma omp ordered
  29     { var++; }
  30   }
  31
  32   fprintf(stderr, "DONE\n");
  33   int error = (var != 2);
  34   return error;
  35 }
  36
  37 // CHECK-NOT: ThreadSanitizer: data race
  38 // CHECK-NOT: ThreadSanitizer: reported
  39 // CHECK: DONE