gcc/testsuite/gcc.target/i386/bmi-blsr-1.c

   1 /* { dg-do run { target { bmi && { ! ia32 } } } } */
   2 /* { dg-options "-O2 -mbmi -fno-inline" } */
   3
   4 #include <x86intrin.h>
   5
   6 #include "bmi-check.h"
   7
   8 long long calc_blsr_u64 (long long src1, long long src2)
   9 {
  10   return (src1-1) & (src2);
  11 }
  12
  13 static void
  14 bmi_test()
  15 {
  16   unsigned i;
  17   long long src = 0xfacec0ffeefacec0;
  18   long long res, res_ref;
  19
  20   for (i=0; i<5; ++i) {
  21     src = i + src << i;
  22
  23     res_ref = calc_blsr_u64 (src, src);
  24     res = __blsr_u64 (src);
  25
  26     if (res != res_ref)
  27       abort();
  28   }
  29 }