gcc/testsuite/gcc.dg/loop-versioning-9.c

   1 /* { dg-options "-O3 -fdump-tree-lversion-details" } */
   2
   3 /* Check that versioning can handle small groups of accesses.  */
   4
   5 void
   6 f1 (int *x, int *y, int step, int n)
   7 {
   8   for (int i = 0; i < n; ++i)
   9     x[i] = y[i * step * 2] + y[i * step * 2 + 1];
  10 }
  11
  12 void
  13 f2 (int *x, int *y, __INTPTR_TYPE__ step, int n)
  14 {
  15   for (int i = 0; i < n; ++i)
  16     x[i] = y[i * step * 2] + y[i * step * 2 + 1];
  17 }
  18
  19 void
  20 f3 (int *x, int *y, int step, int n)
  21 {
  22   for (int i = 0; i < n; ++i)
  23     x[i] = y[i * step * 3] + y[i * step * 3 + 2];
  24 }
  25
  26 void
  27 f4 (int *x, int *y, __INTPTR_TYPE__ step, int n)
  28 {
  29   for (int i = 0; i < n; ++i)
  30     x[i] = y[i * step * 3] + y[i * step * 3 + 2];
  31 }
  32
  33 void
  34 f5 (int *x, int *y, int step, int n)
  35 {
  36   for (int i = 0; i < n; ++i)
  37     x[i] = y[i * step * 4] + y[i * step * 4 + 3];
  38 }
  39
  40 void
  41 f6 (int *x, int *y, __INTPTR_TYPE__ step, int n)
  42 {
  43   for (int i = 0; i < n; ++i)
  44     x[i] = y[i * step * 4] + y[i * step * 4 + 3];
  45 }
  46
  47 /* { dg-final { scan-tree-dump-times {want to version containing loop} 6 "lversion" } } */
  48 /* { dg-final { scan-tree-dump-times {versioned this loop} 6 "lversion" } } */