gcc/testsuite/gcc.dg/tree-ssa/slsr-10.c

   1 /* Verify straight-line strength reduction for simple integer addition
   2    with stride reversed on 1st and 3rd instances.  */
   3
   4 /* { dg-do compile } */
   5 /* { dg-options "-O3 -fdump-tree-optimized" } */
   6
   7 int
   8 f (int s, int c)
   9 {
  10   int a1, a2, a3, x1, x2, x3, x;
  11
  12   a1 = 2 * s;
  13   x1 = a1 + c;
  14   a2 = 4 * s;
  15   x2 = c + a2;
  16   a3 = 6 * s;
  17   x3 = a3 + c;
  18   x = x1 + x2 + x3;
  19   return x;
  20 }
  21
  22 /* { dg-final { scan-tree-dump-times " \\* " 1 "optimized" } } */
  23 /* { dg-final { cleanup-tree-dump "optimized" } } */