gcc/testsuite/gcc.dg/tree-ssa/ldist-27.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3 -ftree-loop-distribute-patterns -fdump-tree-ldist-details" } */
   3
   4 #define M (300)
   5 #define N (200)
   6
   7 struct st
   8 {
   9   double a[M];
  10   double b[M];
  11   double c[M][N];
  12 };
  13
  14 int __attribute__ ((noinline)) foo (struct st *s)
  15 {
  16   int i, j;
  17   for (i = 0; i != M;)
  18     {
  19       s->a[i] = 0.0;
  20       s->b[i] = 1.0;
  21       for (j = 0; 1; ++j)
  22         {
  23           if (j == N) goto L2;
  24           s->c[i][j] = 0.0;
  25         }
  26 L2:
  27       ++i;
  28     }
  29   return 0;
  30 }
  31
  32 int main (void)
  33 {
  34   struct st s;
  35   return foo (&s);
  36 }
  37
  38 /* { dg-final { scan-tree-dump "distributed: split to " "ldist" } } */