Gcc vector extensions

[Ian Lance Taylor]

Hari Sandanagobalane <hariharans@picochip.com> writes:

> Picochip processor has a vector unit that supports operations such as
>
> ADD imm,vsrc,vdest.
>
> where you can add a scalar value to a vector register. This is
> equivalent to adding every element of the vector register with the
> scalar value.
>
> GCC vector extensions allow for a scalar to be used for shift
> operations. This example from documentation says
>
>      typedef int v4si __attribute__ ((vector_size (16)));
>
>      v4si a, b;
>
>      b = a >> 1;     /* b = a >> {1,1,1,1}; */
>
> Is it possible to support
>
> b = a + 1 /* b = a + {1,1,1,1} */
>
> Or, is there any other way to represent this operation?

That is not currently supported as you wrote it.  It would have to be
done using a builtin function.

Ian