On Wednesday, October 29, 2014 02:31:53 PM Matt Turner wrote:
> ... or on Gen >= 7 at all. We use load_payload to gather results for the
> FB write(s) now, so we never write to MRFs directly. It's still called
> after lower_load_payload() since that will generate MOVs to MRFs on
> platforms with MRFs.
>
> No differences in shader-db on Haswell (Gen 7.5).
> ---
> src/mesa/drivers/dri/i965/brw_fs.cpp | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp
b/src/mesa/drivers/dri/i965/brw_fs.cpp
> index aa1d8d2..b223ae5 100644
> --- a/src/mesa/drivers/dri/i965/brw_fs.cpp
> +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
> @@ -2427,6 +2427,10 @@ fs_visitor::compute_to_mrf()
> bool progress = false;
> int next_ip = 0;
>
> + /* No MRFs on Gen >= 7. */
> + if (brw->gen >= 7)
> + return false;
> +
> calculate_live_intervals();
>
> foreach_block_and_inst_safe(block, fs_inst, inst, cfg) {
> @@ -3575,7 +3579,6 @@ fs_visitor::run()
> OPT(opt_register_renaming);
> OPT(opt_saturate_propagation);
> OPT(register_coalesce);
> - OPT(compute_to_mrf);
>
> OPT(compact_virtual_grfs);
> } while (progress);
> Reviewed-by: Kenneth Graunke <kenn...@whitecape.org>
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