r203722 - MS intrinsics: implement the __movs and __stos intrinsics (PR19054)

[Chandler Carruth]

On Wed, Mar 12, 2014 at 3:00 PM, Hans Wennborg <hans at hanshq.net> wrote:

> +  __asm__("rep movsb" : : "D"(__dst), "S"(__src), "c"(__n)
> +                        : "%edi", "%esi", "%ecx");
>

I'm actually a bit sad we don't have an LLVM intrinsic (and corresponding
Clang builtin) that we can use for this...
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