gcc/testsuite/gcc.dg/tree-ssa/forwprop-36.c

   1 /* { dg-do compile { target int128 } } */
   2 /* { dg-options "-O -fdump-tree-cddce1" } */
   3
   4 typedef unsigned __int128 u128;
   5
   6 u128 a, b;
   7
   8 static inline u128
   9 foo (u128 p1)
  10 {
  11   p1 += ~b;
  12   return -p1;
  13 }
  14
  15 int
  16 main ()
  17 {
  18   u128 x = foo (~0x7fffffffffffffff);
  19   if (x != 0x8000000000000001)
  20     __builtin_abort();
  21   return 0;
  22 }
  23
  24 /* { dg-final { scan-tree-dump "if \\(b\\.\[01\]_\[0-9\]+ != 0\\)" "cddce1" } } */