gcc/testsuite/gcc.dg/graphite/interchange-1.c

   1 /* { dg-require-effective-target size32plus } */
   2
   3 /* Formerly known as ltrans-1.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)
  14 {
  15   int i, j;
  16   double sum = 0.0;
  17
  18   for (i = 0; i < N; i++)
  19     {
  20       for (j = 0; j < N; j++)
  21         sum = sum + u[i + 1335 * j];
  22
  23       u[1336 * i] *= 2;
  24     }
  25
  26   return sum + N + u[1336 * 2] + u[1336];
  27 }
  28
  29 extern void abort ();
  30
  31 int
  32 main (void)
  33 {
  34   int i, j, res;
  35
  36   for (i = 0; i < 1782225; i++)
  37     u[i] = 2;
  38
  39   res = foo (1335);
  40
  41 #if DEBUG
  42   fprintf (stderr, "res = %d \n", res);
  43 #endif
  44
  45   if (res != 3565793)
  46     abort ();
  47
  48   return 0;
  49 }
  50
  51
  52 /* { dg-final { scan-tree-dump-times "will be interchanged" 1 "graphite" { xfail *-*-* } } } */
  53 /* { dg-final { cleanup-tree-dump "graphite" } } */