gcc/testsuite/gcc.dg/graphite/block-8.c

   1 /* { dg-require-effective-target size32plus } */
   2 /* { dg-require-effective-target run_expensive_tests }  PR testsuite/48283 */
   3
   4 #define DEBUG 0
   5 #if DEBUG
   6 #include <stdio.h>
   7 #endif
   8
   9 #define N 200
  10
  11 int A[N][N], B[N][N], C[N][N];
  12
  13 static void __attribute__((noinline))
  14 matmult (void)
  15 {
  16   int i, j, k;
  17
  18   for (i = 0; i < N; i++)
  19     for (j = 0; j < N; j++)
  20       A[i][j] = 0;
  21
  22   /* This should be blocked.  */
  23   for (i = 0; i < N; i++)
  24     for (j = 0; j < N; j++)
  25       for (k = 0; k < N; k++)
  26         A[i][j] += B[i][k] * C[k][j];
  27 }
  28
  29 extern void abort ();
  30
  31 int
  32 main (void)
  33 {
  34   int i, j, res = 0;
  35
  36   for (i = 0; i < N; i++)
  37     for (j = 0; j < N; j++)
  38       {
  39         B[i][j] = j;
  40         C[i][j] = i;
  41       }
  42
  43   matmult ();
  44
  45   for (i = 0; i < N; i++)
  46     res += A[i][i];
  47
  48 #if DEBUG
  49   fprintf (stderr, "res = %d \n", res);
  50 #endif
  51
  52   if (res != 529340000)
  53     abort ();
  54
  55   return 0;
  56 }
  57
  58 /* { dg-final { scan-tree-dump-times "will be loop blocked" 1 "graphite" } } */
  59 /* { dg-final { cleanup-tree-dump "graphite" } } */