gcc/testsuite/gcc.dg/tree-ssa/reassoc-22.c

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