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

   1 /* { dg-require-effective-target size32plus } */
   2
   3 #define DEBUG 0
   4 #if DEBUG
   5 #include <stdio.h>
   6 #endif
   7
   8 #define NMAX 2000
   9
  10 static int x1[NMAX], x2[NMAX], a[NMAX][NMAX], y1[NMAX], y2[NMAX];
  11
  12 static int __attribute__((noinline))
  13 mvt (long N)
  14 {
  15
  16   int i,j;
  17
  18   for (i = 0; i < N; i++)
  19     for (j = 0; j < N; j++)
  20       x1[i] = x1[i] + a[i][j] * y1[j];
  21
  22   for (i = 0; i < N; i++)
  23     for (j = 0; j < N; j++)
  24       x2[i] = x2[i] + a[j][i] * y2[j];
  25
  26   return x1[0] + x2[0];
  27 }
  28
  29 int
  30 main (void)
  31 {
  32   int i, j, res;
  33
  34   for (i = 0; i < NMAX; i++)
  35     for (j = 0; j < NMAX; j++)
  36       a[i][j] = i + j;
  37
  38   for (i = 0; i < NMAX; i++)
  39     {
  40       x1[i] = 0;
  41       x2[i] = 2*i;
  42       y1[i] = 100 - i;
  43       y2[i] = i;
  44     }
  45
  46   res = mvt (NMAX);
  47
  48 #if DEBUG
  49   fprintf (stderr, "res = %d \n", res);
  50 #endif
  51
  52   return res != 199900000;
  53 }
  54
  55 /* { dg-final { scan-tree-dump-times "will be interchanged" 1 "graphite" { xfail *-*-* } } } */
  56 /* { dg-final { cleanup-tree-dump "graphite" } } */
  57