R600 Patches (Plus one for SI): Various fixes to get the piglit all_cl tests to stop hanging

[Alex Deucher]

On Fri, Apr 12, 2013 at 4:52 PM, Tom Stellard <tom at stellard.net> wrote:
> Hi,
>
> Attached are several patches to get the piglit test suite to complete a
> full run with all_cl.tests without locking up on my Juniper.
>
> Please Review.

> From ca217819c518e4de2f2dcc3e9044ccb2375b1474 Mon Sep 17 00:00:00 2001
> From: Tom Stellard <thomas.stellard at amd.com>
> Date: Wed, 10 Apr 2013 14:53:58 -0400
> Subject: [PATCH 4/8] R600: Emit RETURN instructions as a NOP with End of Program bit set

Will this cause problems on vliw4 (cayman/tn) hardware?

> From c0cb56a4e2bb43e0caaf0b6c080b72a34bc4a075 Mon Sep 17 00:00:00 2001
> From: Tom Stellard <thomas.stellard at amd.com>
> Date: Wed, 10 Apr 2013 14:55:16 -0400
> Subject: [PATCH 5/8] R600: limit vtx clauses to one instructions
>
> This fixes incorrect address calculations when multiple vtx instructions
> are in the same clause.

Maybe add a comment with the actual hw limits so this doesn't cause
confusion if we fix it down the road?

Alex