aco: Eliminate useless exec writes in jump threading.

Eliminate exec writes which are unused by subsequent instructions.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
34 jobs for !10691 with aco-exec-optimizations in 8 seconds (queued for 5 seconds)
detached
Status Job ID Name Coverage
  Sanity
passed #9739295
sanity

00:00:08

 
  Container
manual #9739300
aarch64 manual
arm_build
manual #9739302
windows shell 1809 mesa manual
windows_build_vs2019
manual #9739297
manual
x86_build-base
manual #9739298
manual
x86_test-base
 
  Container 2
created #9739312
android_build
created #9739306
i386_build
created #9739317
kernel+rootfs_amd64
created #9739319
aarch64
kernel+rootfs_arm64
created #9739321
aarch64
kernel+rootfs_armhf
created #9739308
ppc64el_build
created #9739310
s390x_build
created #9739305
x86_build
created #9739314
x86_test-gl
created #9739315
x86_test-vk
 
  Meson X86 64
created #9739332
meson-clang
created #9739334
meson-clover
created #9739327
meson-clover-testing
created #9739329
meson-gallium
created #9739330
meson-release
created #9739323
meson-testing
created #9739325
meson-testing-asan
created #9739336
meson-vulkan
 
  Build Misc
created #9739337
arm_test
created #9739339
meson-android
created #9739343
aarch64
meson-arm64
created #9739345
aarch64
meson-arm64-asan
created #9739347
aarch64
meson-arm64-build-test
created #9739341
aarch64
meson-armhf
created #9739349
meson-i386
created #9739354
meson-mingw32-x86_64
created #9739353
meson-ppc64el
created #9739351
kvm
meson-s390x
 
  Amd
created #9739356
radv-fossils