gcc/testsuite/gcc.target/i386/bmi-blsr-2.c

   1 /* { dg-do run { target bmi } } */
   2 /* { dg-options "-O2 -mbmi -fno-inline" } */
   3
   4 #include <x86intrin.h>
   5
   6 #include "bmi-check.h"
   7
   8 int calc_blsr_u32 (int src1, int src2)
   9 {
  10   return (src1-1) & (src2);
  11 }
  12
  13 static void
  14 bmi_test ()
  15 {
  16   unsigned i;
  17   int src = 0xfacec0ff;
  18   int res, res_ref;
  19
  20   for (i=0; i<5; ++i) {
  21     src = i + src << i;
  22
  23     res_ref = calc_blsr_u32 (src, src);
  24     res = __blsr_u32 (src);
  25
  26     if (res != res_ref)
  27       abort();
  28   }
  29 }