broadcom/compiler: use nir_opt_load_store_vectorize
This will make it so we pack consecutive scalar operations into a vector
operation, reducing the amount of load/store operations in the NIR program.
Our backend can handle vector load/stores, and doing so may be more efficient
since we don't need to setup individual load/stores all the time.
A pathological case is:
dEQP-VK.spirv_assembly.instruction.compute.opcopymemory.array
which goes from 862 instructions to only 573 by converting
all scalar SSBO load/store operations to vec4 operations.
total instructions in shared programs:
13752607 ->
13733627 (-0.14%)
instructions in affected programs: 367117 -> 348137 (-5.17%)
helped: 1168
HURT: 371
Instructions are helped.
total threads in shared programs: 412230 -> 412272 (0.01%)
threads in affected programs: 54 -> 96 (77.78%)
helped: 23
HURT: 2
Threads are helped.
total uniforms in shared programs: 3790248 -> 3784601 (-0.15%)
uniforms in affected programs: 57417 -> 51770 (-9.84%)
helped: 1420
HURT: 19
Uniforms are helped.
total max-temps in shared programs: 2322170 -> 2322714 (0.02%)
max-temps in affected programs: 14353 -> 14897 (3.79%)
helped: 185
HURT: 306
Max-temps are HURT.
total spills in shared programs: 5940 -> 6010 (1.18%)
spills in affected programs: 65 -> 135 (107.69%)
helped: 0
HURT: 11
total fills in shared programs: 13372 -> 13494 (0.91%)
fills in affected programs: 75 -> 197 (162.67%)
helped: 0
HURT: 11
total sfu-stalls in shared programs: 31505 -> 31521 (0.05%)
sfu-stalls in affected programs: 751 -> 767 (2.13%)
helped: 210
HURT: 246
Inconclusive result (value mean confidence interval includes 0).
total inst-and-stalls in shared programs:
13784112 ->
13765148 (-0.14%)
inst-and-stalls in affected programs: 360283 -> 341319 (-5.26%)
helped: 1125
HURT: 366
Inst-and-stalls are helped.
Reviewed-by: Alejandro PiƱeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9619>