gcc/testsuite/gcc.dg/vrp-min-max-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-vrp1 -fdump-tree-mergephi2" } */
   3
   4 int bar (void);
   5
   6 int foo1 (int x, int y)
   7 {
   8   if (y < 10) return bar ();
   9   if (x > 9) return bar ();
  10
  11   return x < y ? x : y;
  12 }
  13
  14 int foo2 (int x, int y)
  15 {
  16   if (y < 10) return bar ();
  17   if (x > 9) return bar ();
  18
  19   return x > y ? x : y;
  20 }
  21
  22 /* We expect to optimiz min/max in VRP*/
  23
  24 /* { dg-final { scan-tree-dump-times "MIN_EXPR" 1 "mergephi2" } } */
  25 /* { dg-final { scan-tree-dump-times "MAX_EXPR" 1 "mergephi2" } } */
  26 /* { dg-final { scan-tree-dump-not "MIN_EXPR" "vrp1" } } */
  27 /* { dg-final { scan-tree-dump-not "MAX_EXPR" "vrp1" } } */