gcc/testsuite/gcc.dg/tree-ssa/reassoc-5.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3 extern int printf (const char *, ...);
   4 int main(int argc, int b)
   5 {
   6   /* We should be able to get rid of the a - i.  */
   7   int i;
   8   for (i = 0; i < 50; i++)
   9     {
  10       int a = b + i;
  11       int c = a - i;
  12       int d = argc + b;
  13       printf ("%d %d\n", c,d);
  14     }
  15 }
  16 /* { dg-final { scan-tree-dump-times "a - i" 0 "optimized"} } */
  17 /* { dg-final { cleanup-tree-dump "optimized" } } */