[Bug c++/51033] Partial vector extension support

[marc.glisse at normalesup dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51033

--- Comment #4 from Marc Glisse <marc.glisse at normalesup dot org> 2011-11-08 22:18:33 UTC ---
(In reply to comment #3)
> All vector support should also be in the C++ front-end.  Can you give an
> example of something which does not work?  Templates with vectors work already
> too.

#include <x86intrin.h>
double f(){
        __m256d x={1,2,3,4};
        __m256i m={1,2,3,0};
        return __builtin_shuffle(x,m)[0];
}

error: ‘__builtin_shuffle’ was not declared in this scope

If I just return x[0], I get:
error: invalid types ‘__m256d {aka __vector(4) double}[int]’ for array
subscript