gcc/testsuite/gcc.target/i386/rdgsbase-2.c


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/* { dg-do compile } */
/* { dg-require-effective-target lp64 } */
/* { dg-options "-O2 -mfsgsbase" } */
/* { dg-final { scan-assembler "rdgsbase\[ \t]+(%|)rax" } } */

#include <immintrin.h>

unsigned long long
read_gs_base64 (void)
{
  return _readgsbase_u64 ();
}