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

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-reassoc1" } */
   3
   4 unsigned int test3 (unsigned int x, unsigned int y, unsigned int z,
   5                     unsigned int weight,
   6                     unsigned int w1, unsigned int w2, unsigned int w3)
   7 {
   8   unsigned int wtmp1 = w1 * weight;
   9   unsigned int wtmp2 = w2 * weight;
  10   unsigned int wtmp3 = w3 * weight;
  11   unsigned int tmp1 = x * wtmp1;
  12   unsigned int tmp2 = y * wtmp2;
  13   unsigned int tmp3 = z * wtmp3;
  14   return tmp1 + tmp2 + tmp3;
  15 }
  16
  17 /* The multiplication with weight should be un-distributed.
  18    ???  This pattern is not recognized currently.  */
  19
  20 /* { dg-final { scan-tree-dump-times "\\\*" 4 "reassoc1" } } */