gcc/testsuite/gcc.dg/loop-versioning-5.c

   1 /* { dg-options "-O3 -fdump-tree-lversion-details" } */
   2
   3 /* There's no information about whether STEP1 or STEP2 is innermost,
   4    so we should assume the code is sensible and version for the inner
   5    evolution, i.e. when STEP2 is 1.  */
   6
   7 void
   8 f1 (double *x, int step1, int step2, int n)
   9 {
  10   for (int i = 0; i < n; ++i)
  11     for (int j = 0; j < n; ++j)
  12       x[i * step1 + j * step2] = 100;
  13 }
  14
  15 /* { dg-final { scan-tree-dump-times {want to version containing loop for when step2} 1 "lversion" } } */
  16 /* { dg-final { scan-tree-dump-times {want to version containing loop} 1 "lversion" } } */
  17 /* { dg-final { scan-tree-dump-times {versioned this loop} 1 "lversion" } } */