gcc/testsuite/gcc.dg/pr81020.c

   1 /* PR rtl-optimization/81020 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O -fno-tree-bit-ccp -fno-tree-coalesce-vars -fno-tree-vrp" } */
   4
   5 unsigned v = 4;
   6
   7 unsigned long long __attribute__((noipa))
   8 foo (unsigned x)
   9 {
  10   unsigned a = v;
  11   a &= 1;
  12   x |= 0 < a;
  13   a >>= 31;
  14   return x + a;
  15 }
  16
  17 int
  18 main ()
  19 {
  20   if (foo (2) != 2)
  21     __builtin_abort ();
  22   return 0;
  23 }