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

/*
 * ordered.c -- Archer testcase
 */

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
//
// See tools/archer/LICENSE.txt for details.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//


// RUN: %libarcher-compile-and-run | FileCheck %s
// REQUIRES: tsan
#include <omp.h>
#include <stdio.h>

#define NUM_THREADS 2

int main(int argc, char *argv[]) {
  int var = 0;
  int i;

#pragma omp parallel for ordered num_threads(NUM_THREADS) shared(var)
  for (i = 0; i < NUM_THREADS; i++) {
#pragma omp ordered
    { var++; }
  }

  fprintf(stderr, "DONE\n");
  int error = (var != 2);
  return error;
}

// CHECK-NOT: ThreadSanitizer: data race
// CHECK-NOT: ThreadSanitizer: reported
// CHECK: DONE