gcc/testsuite/gcc.dg/graphite/block-0.c

   1 #define DEBUG 0
   2 #if DEBUG
   3 #include <stdio.h>
   4 #endif
   5
   6 #define N 1000
   7 int a[N];
   8
   9 static int __attribute__((noinline))
  10 foo (void)
  11 {
  12   int j;
  13   int i;
  14
  15   /* This is not blocked as it is not profitable.  */
  16   for (i = 0; i < N; i++)
  17     for (j = 0; j < N; j++)
  18       a[j] = a[i] + 1;
  19
  20   return a[0];
  21 }
  22
  23 extern void abort ();
  24
  25 int
  26 main (void)
  27 {
  28   int i, res;
  29
  30   for (i = 0; i < N; i++)
  31     a[i] = i;
  32
  33   res = foo ();
  34
  35 #if DEBUG
  36   fprintf (stderr, "res = %d \n", res);
  37 #endif
  38
  39   if (res != 1999)
  40     abort ();
  41
  42   return 0;
  43 }
  44
  45 /* { dg-final { scan-tree-dump "not tiled" "graphite" } } */