gcc/testsuite/gcc.dg/tree-ssa/vrp21.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -ftree-vrp -fdump-tree-vrp1" } */
   3 /* { dg-require-effective-target int32plus } */
   4
   5 extern void link_error ();
   6
   7 void test01(unsigned int a, unsigned int b)
   8 {
   9   unsigned int x = 0x80000000;
  10   if (a < x)
  11     if (b < x)
  12       if (a > 5)
  13         if (a + b == 0U)
  14           link_error ();
  15 }
  16
  17 void test02(unsigned int a, unsigned int b)
  18 {
  19   unsigned int x = 0x80000000;
  20   if (a > x)
  21     if (b < x)
  22       if (a - b == 1U)
  23         link_error ();
  24 }
  25
  26 /* { dg-final { scan-tree-dump-times "link_error" 0 "vrp1" } } */
  27 /* { dg-final { cleanup-tree-dump "vrp1" } } */