On Sat, May 18, 2019 at 02:22:01PM -0400, tedheadster wrote:
> + *__ebx = *__ecx = *__edx = 0;
> +
> __cpuid (__leaf, *__eax, *__ebx, *__ecx, *__edx);
That won't help, the compiler will remove those dead stores.
Add a
asm("" ::: "memory");
between these two lines?
Also, look at the generated machine code, to see if you are actually
testing what you think you are.
Segher
