gcc/testsuite/gcc.dg/tree-ssa/vrp05.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-vrp1 -fno-early-inlining -fno-thread-jumps -fno-ipa-vrp" } */
   3
   4
   5 inline int ten()
   6 {
   7   return 10;
   8 }
   9 inline int zero()
  10 {
  11   return 0;
  12 }
  13
  14 int
  15 foo (int k, int j)
  16 {
  17   if (k >= ten())
  18     {
  19       if (j > k)
  20         {
  21           /* We should fold this to if (1).  */
  22           if (j > zero())
  23             return j;
  24         }
  25     }
  26
  27   return j+1;
  28 }
  29
  30 /* { dg-final { scan-tree-dump-times "Folding predicate j_.*to 1" 1 "vrp1" } } */