Re: [AD] More AMD64 stuff

[Chris <chris.kcat@xxxxxxxxxx>]

Evert Glebbeek wrote:
> > in MSVC7  intrinsics can be used to make nice C-like code that uses 
> > mmx/sse instructions.  does GCC support them?
>
>
> I'm not sure. I've used inline code like
>
> inline int bsr(unsigned int n)
> {
>    asm ("bsr %%eax, %%eax": "=a" (n) : "a" (n) );
>    return n;
> }
>
> but I'm not sure if that's the sort of thing you're refering to?

Or perhaps you mean using -mmmx/-msse/etc compiler switches to let the 
compiler produce asm code that uses those instructions (without 
backwards compat)?