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Re: [Patch ARM] Improve vdup_n intrinsics.

On 27 June 2012 21:27, Richard Henderson <rth@redhat.com> wrote:
> On 06/20/2012 05:44 AM, Ramana Radhakrishnan wrote:
>> + ? ? ? ? case NEON_DUP:
>> + ? ? ? ? ? if (TREE_CODE (argp[0]) == INTEGER_CST
>> + ? ? ? ? ? ? ? || TREE_CODE (argp[0]) == REAL_CST)
>> + ? ? ? ? ? ? return build_vector_from_val (result_type, argp[0]);
>> + ? ? ? ? ? return NULL_TREE;
>
> You can expand this in all cases. ?Constants go to VECTOR_CST,
> as you're doing, but variables can be expanded via a CONSTRUCTOR.
>
> Check out what we generate for
>
> ?(v4si){ x, x, x, x }

Oh, nice. I'll see what I can spin up.



Ramana

>
>
> r~
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