1  /* { dg-do compile } */
       2  /* { dg-skip-if "" { powerpc*-*-darwin* } } */
       3  /* { dg-require-effective-target powerpc_vsx_ok } */
       4  /* { dg-options "-O3 -mdejagnu-cpu=power7" } */
       5  
       6  /* Cut down example from s_scalbnl that aborted on 32-bit when the fix for
       7     48053 went in to allow creating DImode 0's in VSX registers.  */
       8  
       9  typedef union
      10  {
      11    long double value;
      12    struct
      13    {
      14      unsigned long long msw;
      15      unsigned long long lsw;
      16    } parts64;
      17    struct
      18    {
      19      unsigned int w0, w1, w2, w3;
      20    } parts32;
      21  } ieee854_long_double_shape_type;
      22  
      23  static const long double twolm54 = 5.55111512312578270212e-17;
      24  
      25  long double foo (long double x, int n)
      26  {
      27    long long k, hx, lx;
      28    ieee854_long_double_shape_type qw_u;
      29  
      30    qw_u.value = x;
      31    hx = qw_u.parts64.msw;
      32    lx = qw_u.parts64.lsw;
      33  
      34    k = ((hx >> 52) & 0x7ff) + n + 54;
      35  
      36    qw_u.parts64.msw = ((hx & 0x800fffffffffffffULL) | (k << 52));
      37    qw_u.parts64.lsw = lx;
      38    x = qw_u.value;
      39  
      40    return x*twolm54;
      41  }