[Mesa-dev] [PATCH 11/13] i965: Make backend_instruction usable from C.

[Matt Turner]

On Wed, Jul 2, 2014 at 6:59 AM, Pohjolainen, Topi
<topi.pohjolainen at intel.com> wrote:
> On Mon, Jun 30, 2014 at 02:40:42PM -0700, Matt Turner wrote:
>> With a hack to place an exec_node in the struct in C to be at the same
>> location as the inherited exec_node in C++.
>
> Are you planning to eventually have one but not the other?

I'd kind of like to transition to embedding the exec_node, rather than
inheriting so that we can use the types from C.

For this series, I don't even use .link from backend_instruction. I
just need to add exec_node to backend_instruction so that it has the
same structure in C as C++ (and I can access some of the fields from
C).

> If this is just
> temporary it does not make a lot difference but otherwise I would rather
> have these with different names.

I'm not sure what you mean.

> How big a task would it be to teach plusplus logic to use the C-type?

I don't think it should be too difficult to switch, now that it's easy
to find the uses of the foreach* macros that cast to fs_inst or
vec4_instruction. That might actually let us do things like putting
instructions in multiple lists (one giant list, and a per-basic block
list).