gcc/testsuite/gcc.dg/loop-versioning-7.c

   1 /* { dg-options "-O3 -fdump-tree-lversion-details" } */
   2
   3 /* Check that versioning can handle arrays of structures.  */
   4
   5 struct foo {
   6   int a, b, c;
   7 };
   8
   9 void
  10 f1 (struct foo *x, int stepx, int n)
  11 {
  12   for (int i = 0; i < n; ++i)
  13     {
  14       x[stepx * i].a = 1;
  15       x[stepx * i].b = 2;
  16       x[stepx * i].c = 3;
  17     }
  18 }
  19
  20 void
  21 f2 (struct foo *x, int stepx, int limit)
  22 {
  23   for (int i = 0; i < limit; i += stepx)
  24     {
  25       x[i].a = 1;
  26       x[i].b = 2;
  27       x[i].c = 3;
  28     }
  29 }
  30
  31 /* { dg-final { scan-tree-dump-times {want to version containing loop} 2 "lversion" } } */
  32 /* { dg-final { scan-tree-dump-times {versioned this loop} 2 "lversion" } } */