gcc/testsuite/gcc.dg/graphite/interchange-12.c

   1 /* { dg-require-effective-target size32plus } */
   2
   3 #define DEBUG 0
   4 #if DEBUG
   5 #include <stdio.h>
   6 #endif
   7
   8 #define N 200
   9
  10 int A[N][N], B[N][N], C[N][N];
  11
  12 static int __attribute__((noinline))
  13 matmult (void)
  14 {
  15   int i, j, k;
  16
  17   for (i = 0; i < N; i++)
  18     for (j = 0; j < N; j++)
  19       {
  20         A[i][j] = 0;
  21         for (k = 0; k < N; k++)
  22           A[i][j] += B[i][k] * C[k][j];
  23       }
  24
  25   return A[0][0] + A[N-1][N-1];
  26 }
  27
  28 extern void abort ();
  29
  30 int
  31 main (void)
  32 {
  33   int i, j, res;
  34
  35   for (i = 0; i < N; i++)
  36     for (j = 0; j < N; j++)
  37       {
  38         A[i][j] = 0;
  39         B[i][j] = i - j;
  40         C[i][j] = i + j;
  41       }
  42
  43   res = matmult ();
  44
  45 #if DEBUG
  46   fprintf (stderr, "res = %d \n", res);
  47 #endif
  48
  49   if (res != 2626800)
  50     abort ();
  51
  52   return 0;
  53 }
  54
  55 /* { dg-final { scan-tree-dump-times "will be interchanged" 1 "graphite" { xfail *-*-* } } } */
  56 /* { dg-final { cleanup-tree-dump "graphite" } } */