gcc/testsuite/gcc.target/powerpc/test_mffsl.c

   1 /* { dg-do run { target { powerpc*-*-* } } } */
   2 /* { dg-options "-O2 -std=c99" } */
   3
   4 #ifdef DEBUG
   5 #include <stdio.h>
   6 #endif
   7
   8 void abort (void);
   9
  10 int main ()
  11 {
  12
  13   register double  f14;
  14   union blah {
  15     double d;
  16     unsigned long long ll;
  17   } mffs_val, mffsl_val;
  18
  19   /* Test reading the FPSCR register.  */
  20   __asm __volatile ("mffs %0" : "=f"(f14));
  21   mffs_val.d = f14;
  22   /* Select the same bits as mffsl.  */
  23   mffs_val.ll &= 0x70007f0ffLL;
  24
  25   mffsl_val.d = __builtin_mffsl ();
  26
  27   if (mffs_val.ll != mffsl_val.ll)
  28     {
  29 #ifdef DEBUG
  30       printf("ERROR, __builtin_mffsl() returned 0x%llx, not the expecected value 0x%llx\n",
  31              mffsl_val.ll, mffs_val.ll);
  32 #else
  33       abort();
  34 #endif
  35     }
  36 }