[llvm] [LLVM][SVE] Add MachineInst pass to coalesce PTRUE instructions. (PR #204820)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lldb-arm-ubuntu` running on `linaro-lldb-arm-ubuntu` while building `llvm` at step 6 "test".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/18/builds/26394

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

```
Step 6 (test) failure: build (failure)
...
UNSUPPORTED: lldb-api :: lang/objc/modules-cache/TestClangModulesCache.py (1036 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/modules-auto-import/TestModulesAutoImport.py (1037 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/modules-hash-mismatch/TestClangModulesHashMismatch.py (1038 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/modules-inline-functions/TestModulesInlineFunctions.py (1039 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/modules-incomplete/TestIncompleteModules.py (1040 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/modules-non-objc-target/TestObjCModulesNonObjCTarget.py (1041 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/modules-objc-property/TestModulesObjCProperty.py (1042 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/modules-update/TestClangModulesUpdate.py (1043 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc++/TestObjCXX.py (1044 of 2939)
TIMEOUT: lldb-api :: functionalities/scripted_frame_provider/circular_dependency/TestFrameProviderCircularDependency.py (1045 of 2939)
******************** TEST 'lldb-api :: functionalities/scripted_frame_provider/circular_dependency/TestFrameProviderCircularDependency.py' FAILED ********************
Script:
--
/usr/bin/python3.10 /home/tcwg-buildbot/worker/lldb-arm-ubuntu/llvm-project/lldb/test/API/dotest.py -u CXXFLAGS -u CFLAGS --env LLVM_LIBS_DIR=/home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./lib --env LLVM_INCLUDE_DIR=/home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/include --env LLVM_TOOLS_DIR=/home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./bin --triple armv8l-unknown-linux-gnueabihf --build-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/lldb-test-build --lldb-module-cache-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/lldb-test-build/module-cache-lldb/lldb-api --clang-module-cache-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/lldb-test-build/module-cache-clang/lldb-api --executable /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./bin/lldb --lldb-python-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/local/lib/python3.10/dist-packages --compiler /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./bin/clang --dsymutil /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./bin/dsymutil --make /usr/bin/gmake --llvm-tools-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./bin --lldb-obj-root /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/tools/lldb --lldb-libs-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./lib --cmake-build-type Release /home/tcwg-buildbot/worker/lldb-arm-ubuntu/llvm-project/lldb/test/API/functionalities/scripted_frame_provider/circular_dependency -p TestFrameProviderCircularDependency.py
--
Exit Code: -9
Timeout: Reached timeout of 600 seconds


********************
UNSUPPORTED: lldb-api :: lang/objc/modules/TestObjCModules.py (1046 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-baseclass-sbtype/TestObjCBaseClassSBType.py (1047 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-checker/TestObjCCheckers.py (1048 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-class-method/TestObjCClassMethod.py (1049 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-dynamic-value/TestObjCDynamicValue.py (1050 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-dyn-sbtype/TestObjCDynamicSBType.py (1051 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-foundation-dictionary-empty/TestNSDictionary0.py (1052 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-ivar-protocols/TestIvarProtocols.py (1053 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-ivar-offsets/TestObjCIvarOffsets.py (1054 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-ivar-stripped/TestObjCIvarStripped.py (1055 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-optimized/TestObjcOptimized.py (1056 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-new-syntax/TestObjCNewSyntaxArray.py (1057 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-new-syntax/TestObjCNewSyntaxDictionary.py (1058 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-new-syntax/TestObjCNewSyntaxLiteral.py (1059 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-po-hint/TestObjcPoHint.py (1060 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-property/TestObjCProperty.py (1061 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-runtime-ivars/TestRuntimeIvars.py (1062 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-stepping/TestObjCStepping.py (1063 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-static-method-stripped/TestObjCStaticMethodStripped.py (1064 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-static-method/TestObjCStaticMethod.py (1065 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-super/TestObjCSuper.py (1066 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-struct-argument/TestObjCStructArgument.py (1067 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc-struct-return/TestObjCStructReturn.py (1068 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/objc_direct-methods/TestObjCDirectMethods.py (1069 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/ptr_refs/TestPtrRefsObjC.py (1070 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/orderedset/TestOrderedSet.py (1071 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/print-obj/TestPrintObj.py (1072 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/real-definition/TestRealDefinition.py (1073 of 2939)
UNSUPPORTED: lldb-api :: lang/objc/single-entry-dictionary/TestObjCSingleEntryDictionary.py (1074 of 2939)

```

</details>

https://github.com/llvm/llvm-project/pull/204820