gcc/testsuite/gcc.dg/tree-ssa/reassoc-23.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-reassoc1" } */
   3
   4 unsigned int
   5 foo(unsigned int a, unsigned int b, unsigned int c, unsigned int d,
   6     unsigned int e, unsigned int f, unsigned int g, unsigned int h)
   7 {
   8   /* Should be transformed into e = 20 */
   9   unsigned int i = (a + 9);
  10   unsigned int j = (-c + 1);
  11   i += (c + 8);
  12   j += (-a + 2);
  13   e = i + j;
  14   return e;
  15 }
  16
  17 /* { dg-final { scan-tree-dump-times "= 20" 1 "reassoc1"} } */