[clang] [llvm] RuntimeLibcalls: Move VectorLibrary handling into TargetOptions (PR #167996)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `flang-aarch64-debug-reverse-iteration` running on `linaro-flang-aarch64-debug-reverse-iteration` while building `clang,cross-project-tests,llvm` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/20/builds/13890

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

```
Step 5 (build-unified-tree) failure: build (failure)
...
-- Performing additional configure checks with target flags: -nostdinc++ -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -march=armv8-a
-- Performing Test COMPILER_RT_HAS_aarch64_FLOAT16
-- Performing Test COMPILER_RT_HAS_aarch64_FLOAT16 - Success
-- Performing Test COMPILER_RT_HAS_aarch64_BFLOAT16
-- Performing Test COMPILER_RT_HAS_aarch64_BFLOAT16 - Success
-- For aarch64 builtins preferring aarch64/fp_mode.c to fp_mode.c
-- Configuring done (7.0s)
-- Generating done (0.0s)
-- Build files have been written to: /home/tcwg-buildbot/worker/flang-aarch64-debug-reverse-iteration/build/runtimes/builtins-bins
3417.444 [21/9/7179] Building CXX object tools/opt/CMakeFiles/LLVMOptDriver.dir/optdriver.cpp.o
FAILED: tools/opt/CMakeFiles/LLVMOptDriver.dir/optdriver.cpp.o 
/usr/local/bin/c++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/tcwg-buildbot/worker/flang-aarch64-debug-reverse-iteration/build/tools/opt -I/home/tcwg-buildbot/worker/flang-aarch64-debug-reverse-iteration/llvm-project/llvm/tools/opt -I/home/tcwg-buildbot/worker/flang-aarch64-debug-reverse-iteration/build/include -I/home/tcwg-buildbot/worker/flang-aarch64-debug-reverse-iteration/llvm-project/llvm/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 -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -g -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -MD -MT tools/opt/CMakeFiles/LLVMOptDriver.dir/optdriver.cpp.o -MF tools/opt/CMakeFiles/LLVMOptDriver.dir/optdriver.cpp.o.d -o tools/opt/CMakeFiles/LLVMOptDriver.dir/optdriver.cpp.o -c /home/tcwg-buildbot/worker/flang-aarch64-debug-reverse-iteration/llvm-project/llvm/tools/opt/optdriver.cpp
../llvm-project/llvm/tools/opt/optdriver.cpp:684:30: error: redefinition of 'RTLCI'
  684 |   RTLIB::RuntimeLibcallsInfo RTLCI(ModuleTriple, codegen::getExceptionModel(),
      |                              ^
../llvm-project/llvm/tools/opt/optdriver.cpp:677:30: note: previous definition is here
  677 |   RTLIB::RuntimeLibcallsInfo RTLCI(ModuleTriple, codegen::getExceptionModel(),
      |                              ^
1 error generated.
3418.121 [21/8/7180] Building CXX object unittests/Analysis/InlineOrderPlugin/CMakeFiles/InlineOrderPlugin.dir/InlineOrderPlugin.cpp.o
3418.548 [21/6/7182] Building CXX object unittests/Analysis/InlineAdvisorPlugin/CMakeFiles/InlineAdvisorPlugin.dir/InlineAdvisorPlugin.cpp.o
3418.834 [21/5/7183] Building CXX object examples/IRTransforms/CMakeFiles/ExampleIRTransforms.dir/SimplifyCFG.cpp.o
3419.765 [21/4/7184] Building CXX object examples/Bye/CMakeFiles/Bye.dir/Bye.cpp.o
3420.028 [21/3/7185] Building CXX object tools/opt/CMakeFiles/LLVMOptDriver.dir/NewPMDriver.cpp.o
3424.842 [21/2/7186] Building CXX object unittests/Passes/Plugins/TestPlugin/CMakeFiles/TestPlugin.dir/TestPlugin.cpp.o
3425.285 [21/1/7187] Building CXX object unittests/Passes/Plugins/DoublerPlugin/CMakeFiles/DoublerPlugin.dir/DoublerPlugin.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/167996