gcc/testsuite/gcc.dg/tree-ssa/pr49039.c

   1 /* PR tree-optimization/49039 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdisable-tree-evrp -fdump-tree-vrp1" } */
   4
   5 extern void bar (void);
   6
   7 void
   8 foo (unsigned int x, unsigned int y)
   9 {
  10   unsigned int minv, maxv;
  11   if (x >= 3 && x <= 6)
  12     return;
  13   if (y >= 5 && y <= 8)
  14     return;
  15   minv = x < y ? x : y;
  16   maxv = x > y ? x : y;
  17   if (minv == 5)
  18     bar ();
  19   if (minv == 6)
  20     bar ();
  21   if (maxv == 5)
  22     bar ();
  23   if (maxv == 6)
  24     bar ();
  25 }
  26
  27 /* { dg-final { scan-tree-dump "Folding predicate minv_\[0-9\]* == 5 to 0" "vrp1" } } */
  28 /* { dg-final { scan-tree-dump "Folding predicate minv_\[0-9\]* == 6 to 0" "vrp1" } } */
  29 /* { dg-final { scan-tree-dump "Folding predicate maxv_\[0-9\]* == 5 to 0" "vrp1" } } */
  30 /* { dg-final { scan-tree-dump "Folding predicate maxv_\[0-9\]* == 6 to 0" "vrp1" } } */