nak: Provide our own callback to nir_lower_phis_to_scalar
The default callback of nir_lower_phis_to_scalar internally uses
is_phi_src_scalarizable to determine wether to scalarize a phi vector,
however not doing that helps NAK.
shader-db stats on ga102:
Totals:
CodeSize: 938039520 -> 938024464 (-0.00%); split: -0.00%, +0.00%
SLM Size: 878396 -> 876376 (-0.23%)
Static cycle count: 225000863 -> 224999103 (-0.00%); split: -0.00%, +0.00%
Totals from 140 (0.16% of 87622) affected shaders:
CodeSize: 1353760 -> 1338704 (-1.11%); split: -1.42%, +0.31%
SLM Size: 8160 -> 6140 (-24.75%)
Static cycle count: 316178 -> 314418 (-0.56%); split: -0.71%, +0.16%
Reviewed-by: Mel Henning <mhenning@darkrefraction.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35604>
1 file changed
