(R5900) Implementing Vector Support

[Richard Henderson]

On 05/15/2016 03:43 AM, Woon yung Liu wrote:
>   testv.c:70:2: note: ==> examining statement: _5 = (int) _4;

You need to implement the vec_unpack* patterns.

> But how can I tell what operations are required by autovectorization, that are currently not supported?

Well, the dumps you're looking at are the start.  But it also requires that you 
look through tree-vect-stmts.c.


> My port is still missing the instructions for initializing vectors, and
> inserting/setting and extracting values from vectors. They aren't
> implemented yet because I haven't figured out how to implement them; the
> documentation describes them as simple operations, but yet the
> implementations within mips.c do a lot more things!

Efficient vector initialization requires that we detect some common cases.  We 
do that before the fully general mips_expand_vi_general.


r~