gcc/testsuite/gcc.dg/tree-ssa/slsr-12.c

   1 /* Verify that no straight-line strength reduction occurs across sibling
   2    blocks.  */
   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   if (c > 0)
  13     {
  14       a1 = 2 * s;
  15       x1 = c + a1;
  16     }
  17   else
  18     {
  19       a1 = 4 * s;
  20       x1 = c + a1;
  21     }
  22
  23   a2 = 6 * s;
  24   x2 = c + a2;
  25   x = x1 + x2;
  26   return x;
  27 }
  28
  29 /* { dg-final { scan-tree-dump-times " \\* " 3 "optimized" } } */