[cfe-dev] __builtin_shufflevector

[VanDung To]

thank you for the information

Van

On Fri, Feb 13, 2009 at 11:36 AM, Eli Friedman <eli.friedman at gmail.com>wrote:

> On Fri, Feb 13, 2009 at 6:40 AM, VanDung To <vandungto at gmail.com> wrote:
> > In the Clang language extensions documentation, there's a heading for a
> > builtin function called __builtin_shufflevector but no description.  Have
> > this feature been implemented and could someone help me with a
> description?
>
> Yes, it's implemented; it's roughly the equivalent of the LLVM
> shufflevector instruction.  The first two arguments are vectors, then
> the remaining arguments are the indices used for the returned vector.
>
> -Eli
>
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