radv,aco: lower_pack_half_2x16
This patch also optimizes pack_half_2x16(a, 0.0).
Totals from 1949 (1.43% of 136546) affected shaders (RAVEN):
SGPRs: 83376 -> 83336 (-0.05%)
CodeSize: 3532144 -> 3512352 (-0.56%)
Instrs: 660746 -> 660682 (-0.01%); split: -0.01%, +0.00%
Cycles: 6780716 -> 6780472 (-0.00%); split: -0.00%, +0.00%
VMEM: 990886 -> 990883 (-0.00%); split: +0.00%, -0.00%
SMEM: 150506 -> 150538 (+0.02%); split: +0.05%, -0.03%
SClause: 30595 -> 30594 (-0.00%); split: -0.01%, +0.00%
Copies: 40801 -> 40729 (-0.18%)
PreSGPRs: 52335 -> 52341 (+0.01%); split: -0.03%, +0.04%
PreVGPRs: 45104 -> 45097 (-0.02%)
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6777>
3 files changed
