gcc/libgomp/testsuite/libgomp.c/switch-conversion-2.c

/* PR tree-optimization/85063 */
/* { dg-additional-options "-ftree-switch-conversion" } */

#include <stdlib.h>

int
main (void)
{
  int n[1];

  n[0] = 3;

#pragma omp target
  {
    int m = n[0];
    switch (m & 3)
    {
    case 0: m = 4; break;
    case 1: m = 3; break;
    case 2: m = 2; break;
    default:
      m = 1; break;
    }
    n[0] = m;
  }

  if (n[0] != 1)
    abort ();

  return 0;
}