lima: ppir: use combiner unit for mul
Combiner unit runs after fmul/smul/fadd/sadd units and it can consume
the results that previous units wrote to the registers. So prefer
placing scalar mul into combiner unit and predecessors (if any)
into other units
shader-db:
total instructions in shared programs: 29072 -> 27698 (-4.73%)
instructions in affected programs: 11237 -> 9863 (-12.23%)
helped: 163
HURT: 0
helped stats (abs) min: 1 max: 42 x̄: 8.43 x̃: 4
helped stats (rel) min: 0.64% max: 30.00% x̄: 13.03% x̃: 11.76%
95% mean confidence interval for instructions value: -9.89 -6.96
95% mean confidence interval for instructions %-change: -14.09% -11.97%
Instructions are helped.
total loops in shared programs: 2 -> 2 (0.00%)
loops in affected programs: 0 -> 0
helped: 0
HURT: 0
total spills in shared programs: 367 -> 372 (1.36%)
spills in affected programs: 16 -> 21 (31.25%)
helped: 1
HURT: 2
total fills in shared programs: 1208 -> 1224 (1.32%)
fills in affected programs: 51 -> 67 (31.37%)
helped: 2
HURT: 2
LOST: 0
GAINED: 0
Reviewed-by: Erico Nunes <nunes.erico@gmail.com>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33568>
3 files changed
