gcc/testsuite/gcc.dg/pr93917.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-vrp1 -fdump-tree-vrp2" } */
   3
   4 void f3(int n);
   5
   6 void f1(int n)
   7 {
   8   if(n<0)
   9     __builtin_unreachable();
  10   f3(n);
  11 }
  12
  13 void f2(int*n)
  14 {
  15   if(*n<0)
  16     __builtin_unreachable();
  17   f3 (*n);
  18 }
  19
  20 /* { dg-final { scan-tree-dump-times "Global Export.*0, \\+INF" 1 "vrp1" } } */
  21 /* { dg-final { scan-tree-dump-times "__builtin_unreachable" 1 "vrp1" } } */
  22 /* { dg-final { scan-tree-dump-times "Global Export.*0, \\+INF" 1 "vrp2" } } */
  23 /* { dg-final { scan-tree-dump-times "__builtin_unreachable" 0 "vrp2" } } */