libgomp/testsuite/libgomp.c/parloops-exit-first-loop-alt-2.c

   1 /* { dg-do run } */
   2 /* { dg-additional-options "-ftree-parallelize-loops=2" } */
   3
   4 /* Constant bound, vector addition.  */
   5
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8
   9 #define N 1000
  10
  11 unsigned int a[N];
  12 unsigned int b[N];
  13 unsigned int c[N];
  14
  15 void __attribute__((noclone,noinline))
  16 f (void)
  17 {
  18   int i;
  19
  20   for (i = 0; i < N; ++i)
  21     c[i] = a[i] + b[i];
  22 }
  23
  24 int
  25 main (void)
  26 {
  27   int i, j;
  28
  29   /* Complexify loop to inhibit parloops.  */
  30   for (j = 0; j < 100; ++j)
  31     for (i = 0; i < 10; i++)
  32       {
  33         int k = i + (10 * j);
  34         a[k] = k;
  35         b[k] = (k * 3) % 7;
  36         c[k] = k * 2;
  37       }
  38
  39   f ();
  40
  41   for (i = 0; i < N; i++)
  42     {
  43       unsigned int actual = c[i];
  44       unsigned int expected = i + ((i * 3) % 7);
  45       if (actual != expected)
  46         abort ();
  47     }
  48
  49   return 0;
  50 }