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))
  15 foo (struct st *s)
  16 {
  17   int i, j;
  18   for (i = 0; i != M;)
  19     {
  20       s->a[i] = 0.0;
  21       s->b[i] = 1.0;
  22       for (j = 0; 1; ++j)
  23         {
  24           if (j == N) goto L2;
  25           s->c[i][j] = 0.0;
  26         }
  27 L2:
  28       ++i;
  29     }
  30   return 0;
  31 }
  32
  33 struct st s;
  34
  35 int
  36 main (void)
  37 {
  38   return foo (&s);
  39 }
  40
  41 /* { dg-final { scan-tree-dump "distributed: split to " "ldist" } } */