[llvm] [AArch64] Generate zeroing forms of certain SVE2.2 instructions (3/11) (PR #116829)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `flang-aarch64-out-of-tree` running on `linaro-flang-aarch64-out-of-tree` while building `llvm` at step 7 "build-flang-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/53/builds/8800

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

```
Step 7 (build-flang-unified-tree) failure: build (failure)
...
3.062 [23/18/4] Linking CXX executable unittests/Evaluate/logical.test
3.088 [23/17/5] Linking CXX executable unittests/Evaluate/integer.test
3.130 [23/16/6] Linking CXX executable unittests/Evaluate/real.test
4.164 [23/15/7] Linking CXX executable bin/fir-lsp-server
4.177 [23/14/8] Linking CXX executable bin/f18-parse-demo
6.774 [23/13/9] Linking CXX executable unittests/Evaluate/folding.test
7.152 [23/12/10] Linking CXX executable unittests/Evaluate/expression.test
24.198 [23/11/11] Building CXX object lib/Optimizer/CodeGen/CMakeFiles/FIRCodeGen.dir/Target.cpp.o
37.552 [23/10/12] Building CXX object lib/Optimizer/CodeGen/CMakeFiles/FIRCodeGen.dir/TypeConverter.cpp.o
38.132 [23/9/13] Building CXX object lib/Optimizer/CodeGen/CMakeFiles/FIRCodeGen.dir/TargetRewrite.cpp.o
FAILED: lib/Optimizer/CodeGen/CMakeFiles/FIRCodeGen.dir/TargetRewrite.cpp.o 
/usr/local/bin/c++ -DFLANG_INCLUDE_TESTS=1 -DFLANG_LITTLE_ENDIAN=1 -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/build_flang/lib/Optimizer/CodeGen -I/home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/flang/lib/Optimizer/CodeGen -I/home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/flang/include -I/home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/build_flang/include -isystem /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/mlir/include -isystem /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/build_llvm/tools/mlir/include -isystem /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/llvm/include -isystem /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/build_llvm/include -isystem /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/clang/include -isystem /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/build_llvm/tools/clang/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Werror -Wno-deprecated-copy -Wno-string-conversion -Wno-ctad-maybe-unsupported -Wno-unused-command-line-argument -Wstring-conversion           -Wcovered-switch-default -Wno-nested-anon-types -O3 -DNDEBUG -std=c++17   -D_GNU_SOURCE -D_DEBUG -D_GLIBCXX_ASSERTIONS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -MD -MT lib/Optimizer/CodeGen/CMakeFiles/FIRCodeGen.dir/TargetRewrite.cpp.o -MF lib/Optimizer/CodeGen/CMakeFiles/FIRCodeGen.dir/TargetRewrite.cpp.o.d -o lib/Optimizer/CodeGen/CMakeFiles/FIRCodeGen.dir/TargetRewrite.cpp.o -c /home/tcwg-buildbot/worker/flang-aarch64-out-of-tree/llvm-project/flang/lib/Optimizer/CodeGen/TargetRewrite.cpp
../llvm-project/flang/lib/Optimizer/CodeGen/TargetRewrite.cpp:848:22: error: unused variable 'index' [-Werror,-Wunused-variable]
  848 |                 auto index = e.index();
      |                      ^~~~~
1 error generated.
40.409 [23/8/14] Building CXX object lib/Optimizer/CodeGen/CMakeFiles/FIRCodeGen.dir/FIROpPatterns.cpp.o
41.794 [23/7/15] Building CXX object lib/Optimizer/Transforms/CMakeFiles/FIRTransforms.dir/DebugTypeGenerator.cpp.o
44.612 [23/6/16] Building CXX object lib/Optimizer/CodeGen/CMakeFiles/FIRCodeGen.dir/CodeGenOpenMP.cpp.o
44.873 [23/5/17] Building CXX object lib/Optimizer/Transforms/CMakeFiles/FIRTransforms.dir/CUFAddConstructor.cpp.o
45.775 [23/4/18] Building CXX object lib/Optimizer/Transforms/CMakeFiles/FIRTransforms.dir/CUFGPUToLLVMConversion.cpp.o
45.861 [23/3/19] Building CXX object lib/Optimizer/Transforms/CMakeFiles/FIRTransforms.dir/CUFOpConversion.cpp.o
49.221 [23/2/20] Building CXX object lib/Optimizer/Transforms/CMakeFiles/FIRTransforms.dir/AddDebugInfo.cpp.o
145.308 [23/1/21] Building CXX object lib/Optimizer/CodeGen/CMakeFiles/FIRCodeGen.dir/CodeGen.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/116829