gcc/testsuite/gcc.dg/tree-ssa/vrp11.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-vrp1 -fno-early-inlining" } */
   3
   4 inline int
   5 bounce (int arg)
   6 {
   7   return arg;
   8 }
   9
  10 foo (int k, int j, int z)
  11 {
  12   if (k > z)
  13     {
  14       if (j > k)
  15         {
  16           /* We should fold this to if (1).  */
  17           if (j > bounce (z))
  18             return j;
  19         }
  20     }
  21
  22   return j+1;
  23 }
  24
  25 /* { dg-final { scan-tree-dump-times "Folding predicate.*to 1" 1 "vrp1" } } */
  26 /* { dg-final { cleanup-tree-dump "vrp1" } } */