gcc/testsuite/gcc.dg/tree-ssa/slsr-15.c

   1 /* Straight-line strength reduction control flow variation.  */
   2
   3 /* { dg-do compile } */
   4 /* { dg-options "-O3 -fdump-tree-optimized" } */
   5
   6 int
   7 f (int n, int c, int s)
   8 {
   9   int a, x1, x2, x3;
  10
  11   x1 = x2 = x3 = c;
  12
  13   if (n > 64)
  14     {
  15       a = 2 * s;
  16       x1 = c + a;
  17       a = 4 * s;
  18       x2 = c + a;
  19       a = 6 * s;
  20       x3 = c + a;
  21     }
  22
  23   return x1 + x2 + x3;
  24 }
  25
  26 /* { dg-final { scan-tree-dump-times " \\* " 1 "optimized" } } */