[llvm] [LLVM][ARM] Latency mutations for cortex m55, m7 and m85 (PR #115153)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64-aix` running on `aix-ppc64` while building `llvm` at step 3 "clean-build-dir".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/64/builds/1446

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

```
Step 3 (clean-build-dir) failure: Delete failed. (failure) (timed out)
Step 5 (build-unified-tree) failure: build (failure)
...
2094.282 [3294/10/1899] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMLoadStoreOptimizer.cpp.o
2096.809 [3293/10/1900] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMOptimizeBarriersPass.cpp.o
2096.905 [3292/10/1901] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMMachineFunctionInfo.cpp.o
2098.025 [3291/10/1902] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMMacroFusion.cpp.o
2099.156 [3290/10/1903] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMMCInstLower.cpp.o
2104.713 [3289/10/1904] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSelectionDAGInfo.cpp.o
2105.072 [3288/10/1905] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMRegisterBankInfo.cpp.o
2112.761 [3287/10/1906] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMISelLowering.cpp.o
2112.840 [3286/10/1907] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSLSHardening.cpp.o
2114.228 [3285/10/1908] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSubtarget.cpp.o
FAILED: lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSubtarget.cpp.o 
/usr/local/clang-17.0.2/bin/clang++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_LARGE_FILE_API -D_XOPEN_SOURCE=700 -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/powerllvm/powerllvm_env/aix-ppc64/clang-ppc64-aix/build/lib/Target/ARM -I/home/powerllvm/powerllvm_env/aix-ppc64/clang-ppc64-aix/llvm-project/llvm/lib/Target/ARM -I/home/powerllvm/powerllvm_env/aix-ppc64/clang-ppc64-aix/build/include -I/home/powerllvm/powerllvm_env/aix-ppc64/clang-ppc64-aix/llvm-project/llvm/include -mcmodel=large -fPIC -Werror -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 -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -MD -MT lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSubtarget.cpp.o -MF lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSubtarget.cpp.o.d -o lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSubtarget.cpp.o -c /home/powerllvm/powerllvm_env/aix-ppc64/clang-ppc64-aix/llvm-project/llvm/lib/Target/ARM/ARMSubtarget.cpp
/home/powerllvm/powerllvm_env/aix-ppc64/clang-ppc64-aix/llvm-project/llvm/lib/Target/ARM/ARMSubtarget.cpp:255:11: error: enumeration values 'CortexM55' and 'CortexM85' not handled in switch [-Werror,-Wswitch]
  255 |   switch (ARMProcFamily) {
      |           ^~~~~~~~~~~~~
1 error generated.
2118.623 [3285/9/1909] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMTargetObjectFile.cpp.o
2120.144 [3285/8/1910] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MLxExpansionPass.cpp.o
2124.855 [3285/7/1911] Building InstCombineTables.inc...
2126.324 [3285/6/1912] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVEGatherScatterLowering.cpp.o
2126.467 [3285/5/1913] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMTargetMachine.cpp.o
2127.593 [3285/4/1914] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVELaneInterleavingPass.cpp.o
2128.018 [3285/3/1915] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVEVPTBlockPass.cpp.o
2129.503 [3285/2/1916] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMTargetTransformInfo.cpp.o
2135.976 [3285/1/1917] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVETailPredication.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/115153