gcc/testsuite/gcc.dg/tree-ssa/reassoc-7.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 a + c + d + e + g + 15 */
   9   unsigned int i = (a + 9) + (c + d);
  10   unsigned int j = (e + 4) + (2 + g);
  11   e = i + j;
  12   return e;
  13 }
  14
  15 /* { dg-final { scan-tree-dump-times "\\\+ 15" 1 "reassoc1"} } */