[LLVMdev] Status of pre-legalize vector changes

[Christopher Lamb]

On Jun 11, 2007, at 3:39 PM, Chris Lattner wrote:

> On Mon, 11 Jun 2007, Dan Gohman wrote:
>
> In particular, you should be able to introduce a new [V]CONCAT_VECTOR
> node, which takes two input vectors and yields an output vector  
> that has
> length equal to the sum of the input vectors.  Likewise, instead of  
> the
> extract_element hack, we should have an EXTRACT_SUBVECTOR node of some
> sort.
>
> Since no target support these nodes, they would all be expanded by
> legalize.

It may be possible to codegen EXTRACT_SUBVECTOR on some targets once  
subreg support is in.

--
Christopher Lamb



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