[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 `sanitizer-x86_64-linux-android` running on `sanitizer-buildbot-android` while building `llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/186/builds/3995

<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)
...
[2291/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMParallelDSP.cpp.o
[2292/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMMCInstLower.cpp.o
[2293/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMMachineFunctionInfo.cpp.o
[2294/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMLowOverheadLoops.cpp.o
[2295/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMOptimizeBarriersPass.cpp.o
[2296/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMLoadStoreOptimizer.cpp.o
[2297/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMMacroFusion.cpp.o
[2298/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMRegisterBankInfo.cpp.o
[2299/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSelectionDAGInfo.cpp.o
[2300/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSubtarget.cpp.o
FAILED: lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSubtarget.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache /var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build0/bin/clang++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build64/lib/Target/ARM -I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/llvm/lib/Target/ARM -I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build64/include -I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -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 -fvisibility=hidden  -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 /var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/llvm/lib/Target/ARM/ARMSubtarget.cpp
/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/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.
[2301/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSLSHardening.cpp.o
[2302/5310] Building InstCombineTables.inc...
[2303/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMISelLowering.cpp.o
[2304/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MLxExpansionPass.cpp.o
[2305/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMTargetObjectFile.cpp.o
[2306/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVEVPTBlockPass.cpp.o
[2307/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVELaneInterleavingPass.cpp.o
[2308/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVEGatherScatterLowering.cpp.o
[2309/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMTargetMachine.cpp.o
[2310/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVETailPredication.cpp.o
[2311/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVETPAndVPTOptimisationsPass.cpp.o
[2312/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMTargetTransformInfo.cpp.o
[2313/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMLatencyMutations.cpp.o
ninja: build stopped: subcommand failed.

How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild

@@@STEP_FAILURE@@@
Step 8 (bootstrap clang) failure: bootstrap clang (failure)
...
[2291/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMParallelDSP.cpp.o
[2292/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMMCInstLower.cpp.o
[2293/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMMachineFunctionInfo.cpp.o
[2294/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMLowOverheadLoops.cpp.o
[2295/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMOptimizeBarriersPass.cpp.o
[2296/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMLoadStoreOptimizer.cpp.o
[2297/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMMacroFusion.cpp.o
[2298/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMRegisterBankInfo.cpp.o
[2299/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSelectionDAGInfo.cpp.o
[2300/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSubtarget.cpp.o
FAILED: lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSubtarget.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache /var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build0/bin/clang++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build64/lib/Target/ARM -I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/llvm/lib/Target/ARM -I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm_build64/include -I/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -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 -fvisibility=hidden  -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 /var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/llvm-project/llvm/lib/Target/ARM/ARMSubtarget.cpp
/var/lib/buildbot/sanitizer-buildbot6/sanitizer-x86_64-linux-android/build/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.
[2301/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMSLSHardening.cpp.o
[2302/5310] Building InstCombineTables.inc...
[2303/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMISelLowering.cpp.o
[2304/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MLxExpansionPass.cpp.o
[2305/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMTargetObjectFile.cpp.o
[2306/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVEVPTBlockPass.cpp.o
[2307/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVELaneInterleavingPass.cpp.o
[2308/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVEGatherScatterLowering.cpp.o
[2309/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMTargetMachine.cpp.o
[2310/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVETailPredication.cpp.o
[2311/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/MVETPAndVPTOptimisationsPass.cpp.o
[2312/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMTargetTransformInfo.cpp.o
[2313/5310] Building CXX object lib/Target/ARM/CMakeFiles/LLVMARMCodeGen.dir/ARMLatencyMutations.cpp.o
ninja: build stopped: subcommand failed.

How to reproduce locally: https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild
program finished with exit code 2
elapsedTime=186.568829

```

</details>

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