gcc/testsuite/gcc.dg/graphite/interchange-6.c

   1 /* { dg-require-effective-target size32plus } */
   2
   3 /* Formerly known as ltrans-6.c */
   4
   5 #define DEBUG 0
   6 #if DEBUG
   7 #include <stdio.h>
   8 #endif
   9
  10 #define N 100
  11 #define M 200
  12
  13 static int __attribute__((noinline))
  14 foo (int A[N][M])
  15 {
  16   int i, j;
  17
  18   /* This loop should be interchanged. */
  19   for(j = 0; j < M; j++)
  20     for(i = 0; i < N; i++)
  21       A[i][j] = A[i][j] + A[i][j];
  22
  23   return A[0][0] + A[N-1][M-1];
  24 }
  25
  26 extern void abort ();
  27
  28 int
  29 main (void)
  30 {
  31   int A[N][M];
  32   int i, j, res;
  33
  34   for (i = 0; i < N; i++)
  35     for (j = 0; j < M; j++)
  36       A[i][j] = 2;
  37
  38   res = foo (A);
  39
  40 #if DEBUG
  41   fprintf (stderr, "res = %d \n", res);
  42 #endif
  43
  44   if (res != 8)
  45     abort ();
  46
  47   return 0;
  48 }
  49
  50 /* { dg-final { scan-tree-dump "tiled by" "graphite" } } */