pan/bi: Fail on divergent attribute indices

Undefined behaviour in the hardware; failing compilation is preferable
to executing bad code. This is conformance issue, needs to be lowered to
an if-chain like:

   {
      value = 0;
      if (lane == 0)
         value = ld()
      else if (lane == 1)
         value = ld()
      ...
      else if (lane == MAX_LANE)
         value = ld()
   }

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
113 jobs for !10021 with uniform in 16 seconds (queued for 7 seconds)
latest detached
Status Job ID Name Coverage
  Sanity
passed #8536713
sanity

00:00:16

 
  Container
manual #8536716
aarch64 manual
arm_build
manual #8536717
windows shell 1809 mesa manual
windows_build_vs2019
manual #8536714
manual
x86_build-base
manual #8536715
manual
x86_test-base
 
  Container 2
created #8536725
android_build
created #8536722
i386_build
created #8536718
kernel+rootfs_amd64
created #8536719
aarch64
kernel+rootfs_arm64
created #8536728
aarch64
kernel+rootfs_arm64-baremetal
created #8536720
aarch64
kernel+rootfs_armhf
created #8536729
aarch64
kernel+rootfs_armhf-baremetal
created #8536723
ppc64el_build
created #8536724
s390x_build
created #8536721
x86_build
created #8536726
x86_test-gl
created #8536727
x86_test-vk
 
  Meson X86 64
created #8536735
meson-clang
created #8536736
meson-clover
created #8536732
meson-clover-testing
created #8536733
meson-gallium
created #8536734
meson-release
created #8536730
meson-testing
created #8536731
meson-testing-asan
created #8536737
meson-vulkan
 
  Build Misc
created #8536738
arm_test
created #8536739
meson-android
created #8536741
aarch64
meson-arm64
created #8536742
aarch64
meson-arm64-asan
created #8536743
aarch64
meson-arm64-build-test
created #8536740
aarch64
meson-armhf
created #8536745
meson-i386
created #8536748
meson-mingw32-x86_64
created #8536747
kvm
meson-ppc64el
created #8536746
kvm
meson-s390x
created #8536744
windows docker 1809 mesa
meson-windows-vs2019
 
  Amd
created #8536750
mesa-ci-aarch64-lava-collabora
radeonsi-stoney-gles31:amd64
created #8536751
mesa-ci-aarch64-lava-collabora
radeonsi-stoney-traces:amd64
created #8536749
radv-fossils
 
  Arm
created #8536752
mesa-ci-aarch64-lava-collabora
panfrost-t720-gles2:arm64
created #8536753
mesa-ci-aarch64-lava-collabora
panfrost-t860-gles2:arm64
created #8536754
mesa-ci-aarch64-lava-collabora
panfrost-t860-gles3:arm64 1/2
created #8536755
mesa-ci-aarch64-lava-collabora
panfrost-t860-gles3:arm64 2/2
created #8536756
mesa-ci-aarch64-lava-collabora
panfrost-t860-traces:arm64
 
  Broadcom
created #8536767
igalia-rpi4
v3d-rpi4-gles2:armhf
created #8536761
igalia-rpi4
v3d-rpi4-gles31:armhf 1/2
created #8536762
igalia-rpi4
v3d-rpi4-gles31:armhf 2/2
created #8536763
igalia-rpi4
v3d-rpi4-gles3:armhf 1/4
created #8536764
igalia-rpi4
v3d-rpi4-gles3:armhf 2/4
created #8536765
igalia-rpi4
v3d-rpi4-gles3:armhf 3/4
created #8536766
igalia-rpi4
v3d-rpi4-gles3:armhf 4/4
created #8536768
igalia-rpi4
v3dv-rpi4-vk:armhf 1/6
created #8536769
igalia-rpi4
v3dv-rpi4-vk:armhf 2/6
created #8536770
igalia-rpi4
v3dv-rpi4-vk:armhf 3/6
created #8536771
igalia-rpi4
v3dv-rpi4-vk:armhf 4/6
created #8536772
igalia-rpi4
v3dv-rpi4-vk:armhf 5/6
created #8536773
igalia-rpi4
v3dv-rpi4-vk:armhf 6/6
created #8536757
igalia-rpi3
vc4-rpi3-gles2:armhf 1/4
created #8536758
igalia-rpi3
vc4-rpi3-gles2:armhf 2/4
created #8536759
igalia-rpi3
vc4-rpi3-gles2:armhf 3/4
created #8536760
igalia-rpi3
vc4-rpi3-gles2:armhf 4/4
 
  Freedreno
created #8536774
google-freedreno-db410c
a306_gles2
created #8536775
google-freedreno-db410c
a306_gles3 1/3
created #8536776
google-freedreno-db410c
a306_gles3 2/3
created #8536777
google-freedreno-db410c
a306_gles3 3/3
created #8536778
google-freedreno-db410c
a306_gles3_options
created #8536779
google-freedreno-db410c
a306-traces
created #8536780
google-freedreno-db820c
a530_gles2
created #8536783
google-freedreno-db820c
a530_gles31 1/2
created #8536781
google-freedreno-db820c
a530_gles3 1/2
created #8536784
google-freedreno-db820c
a530_gles31 2/2
created #8536782
google-freedreno-db820c
a530_gles3 2/2
created #8536785
google-freedreno-db820c
a530_piglit_gl
created #8536786
google-freedreno-db820c
a530_piglit_shader
created #8536787
google-freedreno-db820c
a530-traces
created #8536791
google-freedreno-cheza
a630_gl
created #8536788
google-freedreno-cheza
a630_gles2
created #8536790
google-freedreno-cheza
a630_gles3
created #8536789
google-freedreno-cheza
a630_gles31
created #8536792
google-freedreno-cheza
a630_gles_others
created #8536796
google-freedreno-cheza
a630_piglit_gl
created #8536797
google-freedreno-cheza
a630_piglit_shader
created #8536798
google-freedreno-cheza
a630-traces
created #8536793
google-freedreno-cheza
a630_vk 1/2
created #8536794
google-freedreno-cheza
a630_vk 2/2
created #8536795
google-freedreno-cheza
a630_vk_sysmem
 
  Software Renderer
created #8536812
lavapipe-vk
created #8536804
llvmpipe-gles2
created #8536799
llvmpipe-piglit-cl
created #8536801
llvmpipe-piglit-glslparser
created #8536800
llvmpipe-piglit-quick_gl
created #8536802
llvmpipe-piglit-quick_shader
created #8536803
llvmpipe-traces
created #8536809
softpipe-asan-gles31
created #8536811
softpipe-gl
created #8536805
softpipe-gles2
created #8536806
softpipe-gles3
created #8536807
softpipe-gles31 1/2
created #8536808
softpipe-gles31 2/2
created #8536810
softpipe-piglit-quick
 
  Layered Backends
created #8536825
windows docker 1809 mesa
test-d3d12-windows
created #8536817
virgl-gl30-on-gl
created #8536818
virgl-gl31-on-gl
created #8536819
virgl-gl32-on-gl
created #8536813
virgl-gles2-on-gl
created #8536815
virgl-gles31-on-gl 1/2
created #8536816
virgl-gles31-on-gl 2/2
created #8536814
virgl-gles3-on-gl
created #8536820
virgl-traces
created #8536824
zink-lvp-gl
created #8536822
zink-lvp-gles2
created #8536823
zink-lvp-gles3
created #8536821
zink-piglit-quick_gl