gcc/testsuite/gcc.dg/tree-ssa/reassoc-25.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 --param tree-reassoc-width=3 -fdump-tree-reassoc1-details" } */
   3
   4 unsigned int
   5 foo (int a, int b, int c, int d)
   6 {
   7   unsigned int s = 0;
   8
   9   s += a;
  10   s += b;
  11   s += c;
  12   s += d;
  13
  14   return s;
  15 }
  16
  17 /* Verify reassociation width was chosen to be 2.  */
  18 /* { dg-final { scan-tree-dump-times "Width = 2" 1 "reassoc1"} } */