[Mesa-dev] [PATCH] radeonsi/gfx9: compile shaders with +xnack

[Matt Arsenault]

> On May 18, 2017, at 22:46, Marek Olšák <maraeo at gmail.com> wrote:
> 
> From: Marek Olšák <marek.olsak at amd.com>
> 
> so that LLVM doesn't allocate SGPRs where XNACK is.
> 
> Cc: 17.1 <mesa-stable at lists.freedesktop.org>

You shouldn’t be explicitly enabling xnack. This sounds like a workaround for a backend bug, and this has other consequences than changing the reserved registers. Do you have an example of where this is a problem?