gcc/testsuite/gcc.dg/pr114211.c

   1 /* PR rtl-optimization/114211 */
   2 /* { dg-do run { target int128 } } */
   3 /* { dg-options "-O -fno-tree-coalesce-vars -Wno-psabi" } */
   4
   5 typedef unsigned __int128 V __attribute__((__vector_size__ (16)));
   6 unsigned int u;
   7 V v;
   8
   9 V
  10 foo (unsigned __int128 h)
  11 {
  12   h = h << 64 | h >> 64;
  13   h *= ~u;
  14   return h + v;
  15 }
  16
  17 int
  18 main ()
  19 {
  20   V x = foo (1);
  21   if (x[0] != (unsigned __int128) 0xffffffff << 64)
  22     __builtin_abort ();
  23 }