[Mesa-dev] [PATCH 7/7] i965: Don't spill "smeared" registers.

[Matt Turner]

On Fri, Sep 28, 2012 at 8:13 AM, Paul Berry <stereotype441 at gmail.com> wrote:
> I'll try this later today and see if it has any benefit.

If you're going to working with the register allocation code, you may
want to take a look at fs_visitor::spill_reg at the same time. Reading
the code, it seems like there's the potential for a register used as a
source operand multiple times by the same instruction to be also
unspilled multiple times. Looks possible that the same applies to
being used for source and destination.