gcc/testsuite/gcc.dg/tree-ssa/ldist-25.c

   1 /* { dg-do compile { target size32plus } } */
   2 /* { dg-options "-O3 -ftree-loop-distribute-patterns -fdump-tree-ldist-details" } */
   3
   4 #define k 1335
   5 double a[k][k];
   6 double b[k][k];
   7 double c[k][k];
   8
   9 int x;
  10 int y;
  11
  12 void
  13 foo (void)
  14 {
  15   for (int j = 0; j < x; j++)
  16     {
  17       for (int i = 0; i < y; i++)
  18         {
  19           c[j][i] = b[j][i] - a[j][i];
  20           a[j][i] = b[j][i];
  21         }
  22     }
  23 }
  24
  25 /* { dg-final { scan-tree-dump "Loop . not distributed" "ldist" } } */