gcc/testsuite/gcc.dg/graphite/interchange-4.c

   1 /* { dg-require-effective-target size32plus } */
   2
   3 /* Formerly known as ltrans-4.c */
   4
   5 #define DEBUG 0
   6 #if DEBUG
   7 #include <stdio.h>
   8 #endif
   9
  10 double u[1782225];
  11
  12 static int __attribute__((noinline))
  13 foo (int N, int *res)
  14 {
  15   int i, j;
  16   double sum = 0;
  17   for (i = 0; i < N; i++)
  18     for (j = 0; j < N; j++)
  19       sum = sum + u[i + 1335 * j];
  20
  21   for (i = 0; i < N; i++)
  22     u[1336 * i] *= 2;
  23
  24   *res = sum + N + u[1336 * 2] + u[1336];
  25 }
  26
  27 extern void abort ();
  28
  29 int
  30 main (void)
  31 {
  32   int i, j, res;
  33
  34   for (i = 0; i < 1782225; i++)
  35     u[i] = 2;
  36
  37   foo (1335, &res);
  38
  39 #if DEBUG
  40   fprintf (stderr, "res = %d \n", res);
  41 #endif
  42
  43   if (res != 3565793)
  44     abort ();
  45
  46   return 0;
  47 }
  48
  49 /* { dg-final { scan-tree-dump-times "will be interchanged" 1 "graphite" } } */
  50 /* { dg-final { cleanup-tree-dump "graphite" } } */