1  /* __builtin_apply_args () and __builtin_return () built-in functions does
       2     not function properly when -mmmx is used in compile flags.
       3     __builtin_apply_args () saves all registers that pass arguments to a
       4     function, including %mm0-%mm3, to a memory block, and __builtin_return ()
       5     restores %mm0, from a return memory block, as it can be used as a
       6     function return register.  Unfortunatelly, when MMX registers are touched,
       7     i387 FPU switches to MMX mode, and no FP operation is possible until emms
       8     instruction is issued.  */
       9  
      10  /* This test case is adapted from gcc.dg/builtin-apply4.c.  */
      11   
      12  /* { dg-do run { xfail { ! *-*-darwin* } } } */
      13  /* { dg-options "-O2 -mmmx -fgnu89-inline" } */
      14  /* { dg-require-effective-target ia32 } */
      15  
      16  #include "mmx-check.h"
      17  
      18  extern void abort (void);
      19  
      20  double
      21  foo (double arg)
      22  {
      23    if (arg != 116.0)
      24      abort ();
      25  
      26    return arg + 1.0;
      27  }
      28  
      29  inline double
      30  bar (double arg)
      31  {
      32    foo (arg);
      33    __builtin_return (__builtin_apply ((void (*)()) foo,
      34  				     __builtin_apply_args (), 16));
      35  }
      36  
      37  static void
      38  mmx_test (void)
      39  {
      40    if (bar (116.0) != 117.0)
      41      abort ();
      42  }