[llvm] [AArch64] Optimize CBZ wzr and friends. (PR #161508)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-ppc64le-linux` running on `ppc64le-sanitizer` while building `llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/72/builds/16581

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure) (timed out)
...
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstring.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/ctime.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cuchar.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cwchar.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cwctype.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.cppm
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat.cppm
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/lib/libc++.modules.json
[112/114] Generating Msan-powerpc64le-Test
[113/114] Running compiler_rt regression tests
command timed out: 1800 seconds without output running [b'python', b'../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=8473.195739
Step 14 (test standalone compiler-rt) failure: test standalone compiler-rt (failure)
...
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/streambuf.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/string.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/string_view.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/strstream.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/syncstream.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/system_error.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/text_encoding.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/thread.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/tuple.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/type_traits.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/typeindex.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/typeinfo.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/unordered_map.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/unordered_set.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/utility.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/valarray.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/variant.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/vector.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std/version.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cassert.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cctype.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cerrno.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cfenv.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cfloat.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cinttypes.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/climits.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/clocale.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cmath.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/csetjmp.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/csignal.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstdarg.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstddef.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstdint.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstdio.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstdlib.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cstring.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/ctime.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cuchar.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cwchar.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat/cwctype.inc
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.cppm
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/share/libc++/v1/std.compat.cppm
-- Installing: /home/buildbots/llvm-external-buildbots/workers/ppc64le-sanitizer/sanitizer-ppc64le/build/compiler_rt_build/lib/tsan/libcxx_tsan_powerpc64le/lib/libc++.modules.json
[112/114] Generating Msan-powerpc64le-Test
[113/114] Running compiler_rt regression tests

command timed out: 1800 seconds without output running [b'python', b'../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=8473.195739

```

</details>

https://github.com/llvm/llvm-project/pull/161508