gcc/testsuite/gcc.dg/graphite/block-4.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 24
   9 #define M 1000
  10
  11 int A[M][M], B[M][M], C[M][M];
  12
  13 static int __attribute__((noinline))
  14 foo (void)
  15 {
  16   int i, j, k;
  17
  18   for (i = 0; i < 24; i++)
  19     for (j = 0; j < 24; j++)
  20       for (k = 0; k < 24; k++)
  21         A[i][j] = B[i][k] * C[k][j];
  22
  23   for (i = 0; i < M; i++)
  24     for (j = 0; j < M; j++)
  25       for (k = 0; k < M; k++)
  26         A[i][j] = B[i][k] * C[k][j];
  27
  28   return A[0][0] + A[M-1][M-1];
  29 }
  30
  31 extern void abort ();
  32
  33 int
  34 main (void)
  35 {
  36   int i, j, res;
  37
  38   for (i = 0; i < M; i++)
  39     for (j = 0; j < M; j++)
  40       {
  41         B[i][j] = i;
  42         C[i][j] = j;
  43       }
  44
  45   res = foo ();
  46
  47 #if DEBUG
  48   fprintf (stderr, "res = %d \n", res);
  49 #endif
  50
  51   if (res != 998001)
  52     abort ();
  53
  54   return 0;
  55 }
  56
  57 /* { dg-final { scan-tree-dump-times "will be loop blocked" 1 "graphite" { xfail *-*-* } } } */
  58 /* { dg-final { cleanup-tree-dump "graphite" } } */