ac: set .align_mul = 16u/8u for load/store_shared

As the shared variables are now written/loaded per slot,
the align_mul is 16 instead of 4.
For store_shared, because of the additional copies when
using .align_mul = 16u, it's better to keep it at 8u.

Totals from 135 (0.09% of 149839) affected shaders: (GFX10.3)
VGPRs: 6504 -> 6776 (+4.18%); split: -0.12%, +4.31%
CodeSize: 505684 -> 479276 (-5.22%); split: -5.36%, +0.13%
MaxWaves: 2926 -> 2854 (-2.46%); split: +0.07%, -2.53%
Instrs: 89882 -> 87780 (-2.34%); split: -3.41%, +1.08%
Latency: 321525 -> 313024 (-2.64%); split: -3.13%, +0.48%
InvThroughput: 96611 -> 96225 (-0.40%); split: -2.87%, +2.47%
Copies: 7501 -> 10076 (+34.33%)
PreVGPRs: 5113 -> 5171 (+1.13%); split: -0.04%, +1.17%
73 jobs for aco_vectorize_shared
Status Job ID Name Coverage
  Container
manual arm_build #10947444
aarch64 manual
manual windows_build_vs2019 #10947445
windows shell 1809 mesa manual
manual x86_build-base #10947442
manual
manual x86_test-base #10947443
manual
 
  Container 2
created android_build #10947450
created i386_build #10947447
created kernel+rootfs_amd64 #10947453
created kernel+rootfs_arm64 #10947454
aarch64
created kernel+rootfs_armhf #10947455
aarch64
created ppc64el_build #10947448
created s390x_build #10947449
created x86_build #10947446
created x86_test-gl #10947451
created x86_test-vk #10947452
 
  Meson X86 64
created meson-clang #10947461
created meson-clover #10947462
created meson-clover-testing #10947458
created meson-gallium #10947459
created meson-release #10947460
created meson-testing #10947456
created meson-testing-asan #10947457
created meson-vulkan #10947463
 
  Build Misc
created arm_test #10947464
created meson-android #10947465
created meson-arm64 #10947467
aarch64
created meson-arm64-asan #10947468
aarch64
created meson-arm64-build-test #10947469
aarch64
created meson-armhf #10947466
aarch64
created meson-i386 #10947470
created meson-mingw32-x86_64 #10947472
created meson-ppc64el #10947471
 
  Amd
created radeonsi-stoney-gles2:amd64 #10947481
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
created radeonsi-stoney-gles31:amd64 1/2 #10947484
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
created radeonsi-stoney-gles31:amd64 2/2 #10947485
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
created radeonsi-stoney-gles3:amd64 1/2 #10947482
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
created radeonsi-stoney-gles3:amd64 2/2 #10947483
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
created radeonsi-stoney-piglit-gl:amd64 #10947487
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
created radeonsi-stoney-traces:amd64 #10947486
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
created radv-fossils #10947480
created radv-navy_flounder-traces #10947474
amdgpu:codename:NAVY_FLOUNDER manual
created radv-navy_flounder-vkd3d-proton #10947473
amdgpu:codename:NAVY_FLOUNDER manual
created radv_polaris10_vkcts #10947476
polaris10 manual
created radv-raven-traces #10947475
amdgpu:codename:RAVEN manual
created radv_stoney_vkcts:amd64 1/3 #10947477
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
created radv_stoney_vkcts:amd64 2/3 #10947478
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
created radv_stoney_vkcts:amd64 3/3 #10947479
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
 
  Intel
created i915-g33-deqp #10947488
anholt-g33 manual
created i915-g33-khr-deqp #10947489
anholt-g33 manual
created i915-g33-piglit #10947490
anholt-g33 manual
created i915-g33-traces #10947491
anholt-g33 manual
created iris-amly-gles3 #10947498
mesa-ci-x86-64-lava-asus-C433TA-AJ0005-rammus manual
created iris-amly-gles31 #10947499
mesa-ci-x86-64-lava-asus-C433TA-AJ0005-rammus manual
created iris-apl-gl #10947492
mesa-ci-x86-64-lava-asus-C523NA-A20057-coral manual
created iris-glk-egl #10947497
mesa-ci-x86-64-lava-hp-x360-12b-n4000-octopus manual
created iris-glk-gl #10947496
mesa-ci-x86-64-lava-hp-x360-12b-n4000-octopus manual
created iris-glk-gles2 #10947493
mesa-ci-x86-64-lava-hp-x360-12b-n4000-octopus manual
created iris-glk-gles3 #10947494
mesa-ci-x86-64-lava-hp-x360-12b-n4000-octopus manual
created iris-glk-gles31 #10947495
mesa-ci-x86-64-lava-hp-x360-12b-n4000-octopus manual
created iris-glk-traces #10947500
mesa-ci-x86-64-lava-hp-x360-12b-n4000-octopus manual
created iris-kbl-traces #10947501
mesa-ci-x86-64-lava-hp-x360-14-G1-sona manual
 
  Broadcom
created vc4-rpi3-piglit-quick_gl:armhf 1/4 #10947502
igalia-rpi3 manual
created vc4-rpi3-piglit-quick_gl:armhf 2/4 #10947503
igalia-rpi3 manual
created vc4-rpi3-piglit-quick_gl:armhf 3/4 #10947504
igalia-rpi3 manual
created vc4-rpi3-piglit-quick_gl:armhf 4/4 #10947505
igalia-rpi3 manual
created vc4-rpi3-piglit-quick_shader:armhf 1/2 #10947506
igalia-rpi3 manual
created vc4-rpi3-piglit-quick_shader:armhf 2/2 #10947507
igalia-rpi3 manual
 
  Freedreno
created a530_piglit_gl #10947508
google-freedreno-db820c manual
created a630_gles_asan #10947509
google-freedreno-cheza manual
created a630_vk_asan #10947510
google-freedreno-cheza manual
 
  Layered Backends
created virgl-gles2-on-gles #10947511
manual
created virgl-gles31-on-gles 1/2 #10947513
manual
created virgl-gles31-on-gles 2/2 #10947514
manual
created virgl-gles3-on-gles #10947512
manual