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%
Status Job ID Name Coverage
  Container
manual #10947444
aarch64 manual
arm_build
manual #10947445
windows shell 1809 mesa manual
windows_build_vs2019
manual #10947442
manual
x86_build-base
manual #10947443
manual
x86_test-base
 
  Container 2
created #10947450
android_build
created #10947447
i386_build
created #10947453
kernel+rootfs_amd64
created #10947454
aarch64
kernel+rootfs_arm64
created #10947455
aarch64
kernel+rootfs_armhf
created #10947448
ppc64el_build
created #10947449
s390x_build
created #10947446
x86_build
created #10947451
x86_test-gl
created #10947452
x86_test-vk
 
  Meson X86 64
created #10947461
meson-clang
created #10947462
meson-clover
created #10947458
meson-clover-testing
created #10947459
meson-gallium
created #10947460
meson-release
created #10947456
meson-testing
created #10947457
meson-testing-asan
created #10947463
meson-vulkan
 
  Build Misc
created #10947464
arm_test
created #10947465
meson-android
created #10947467
aarch64
meson-arm64
created #10947468
aarch64
meson-arm64-asan
created #10947469
aarch64
meson-arm64-build-test
created #10947466
aarch64
meson-armhf
created #10947470
meson-i386
created #10947472
meson-mingw32-x86_64
created #10947471
meson-ppc64el
 
  Amd
created #10947481
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
radeonsi-stoney-gles2:amd64
created #10947484
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
radeonsi-stoney-gles31:amd64 1/2
created #10947485
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
radeonsi-stoney-gles31:amd64 2/2
created #10947482
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
radeonsi-stoney-gles3:amd64 1/2
created #10947483
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
radeonsi-stoney-gles3:amd64 2/2
created #10947487
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
radeonsi-stoney-piglit-gl:amd64
created #10947486
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
radeonsi-stoney-traces:amd64
created #10947480
radv-fossils
created #10947474
amdgpu:codename:NAVY_FLOUNDER manual
radv-navy_flounder-traces
created #10947473
amdgpu:codename:NAVY_FLOUNDER manual
radv-navy_flounder-vkd3d-proton
created #10947476
polaris10 manual
radv_polaris10_vkcts
created #10947475
amdgpu:codename:RAVEN manual
radv-raven-traces
created #10947477
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
radv_stoney_vkcts:amd64 1/3
created #10947478
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
radv_stoney_vkcts:amd64 2/3
created #10947479
mesa-ci-x86-64-lava-hp-11A-G6-EE-grunt
radv_stoney_vkcts:amd64 3/3
 
  Intel
created #10947488
anholt-g33 manual
i915-g33-deqp
created #10947489
anholt-g33 manual
i915-g33-khr-deqp
created #10947490
anholt-g33 manual
i915-g33-piglit
created #10947491
anholt-g33 manual
i915-g33-traces
created #10947498
mesa-ci-x86-64-lava-asus-C433TA-AJ0005-rammus manual
iris-amly-gles3
created #10947499
mesa-ci-x86-64-lava-asus-C433TA-AJ0005-rammus manual
iris-amly-gles31
created #10947492
mesa-ci-x86-64-lava-asus-C523NA-A20057-coral manual
iris-apl-gl
created #10947497
mesa-ci-x86-64-lava-hp-x360-12b-n4000-octopus manual
iris-glk-egl
created #10947496
mesa-ci-x86-64-lava-hp-x360-12b-n4000-octopus manual
iris-glk-gl
created #10947493
mesa-ci-x86-64-lava-hp-x360-12b-n4000-octopus manual
iris-glk-gles2
created #10947494
mesa-ci-x86-64-lava-hp-x360-12b-n4000-octopus manual
iris-glk-gles3
created #10947495
mesa-ci-x86-64-lava-hp-x360-12b-n4000-octopus manual
iris-glk-gles31
created #10947500
mesa-ci-x86-64-lava-hp-x360-12b-n4000-octopus manual
iris-glk-traces
created #10947501
mesa-ci-x86-64-lava-hp-x360-14-G1-sona manual
iris-kbl-traces
 
  Broadcom
created #10947502
igalia-rpi3 manual
vc4-rpi3-piglit-quick_gl:armhf 1/4
created #10947503
igalia-rpi3 manual
vc4-rpi3-piglit-quick_gl:armhf 2/4
created #10947504
igalia-rpi3 manual
vc4-rpi3-piglit-quick_gl:armhf 3/4
created #10947505
igalia-rpi3 manual
vc4-rpi3-piglit-quick_gl:armhf 4/4
created #10947506
igalia-rpi3 manual
vc4-rpi3-piglit-quick_shader:armhf 1/2
created #10947507
igalia-rpi3 manual
vc4-rpi3-piglit-quick_shader:armhf 2/2
 
  Freedreno
created #10947508
google-freedreno-db820c manual
a530_piglit_gl
created #10947509
google-freedreno-cheza manual
a630_gles_asan
created #10947510
google-freedreno-cheza manual
a630_vk_asan
 
  Layered Backends
created #10947511
manual
virgl-gles2-on-gles
created #10947513
manual
virgl-gles31-on-gles 1/2
created #10947514
manual
virgl-gles31-on-gles 2/2
created #10947512
manual
virgl-gles3-on-gles