[CodeGen] Use OwningArrayRef in PBQP::Vector (NFC)

[kazutakahirata]

No description provided.

[nikic]

LGTM

[llvm-ci]

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/15136

Here is the relevant piece of the build log for the reference

Step 6 (test) failure: build (failure)
...
UNSUPPORTED: lldb-api :: tools/lldb-dap/extendedStackTrace/TestDAP_extendedStackTrace.py (1174 of 3001)
PASS: lldb-api :: tools/lldb-dap/instruction-breakpoint/TestDAP_instruction_breakpoint.py (1175 of 3001)
PASS: lldb-api :: tools/lldb-dap/io/TestDAP_io.py (1176 of 3001)
PASS: lldb-api :: tools/lldb-dap/disconnect/TestDAP_disconnect.py (1177 of 3001)
PASS: lldb-api :: tools/lldb-dap/locations/TestDAP_locations.py (1178 of 3001)
PASS: lldb-api :: tools/lldb-dap/memory/TestDAP_memory.py (1179 of 3001)
PASS: lldb-api :: tools/lldb-dap/optimized/TestDAP_optimized.py (1180 of 3001)
PASS: lldb-api :: tools/lldb-dap/output/TestDAP_output.py (1181 of 3001)
PASS: lldb-api :: tools/lldb-dap/launch/TestDAP_launch.py (1182 of 3001)
UNRESOLVED: lldb-api :: tools/lldb-dap/evaluate/TestDAP_evaluate.py (1183 of 3001)
******************** TEST 'lldb-api :: tools/lldb-dap/evaluate/TestDAP_evaluate.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 --arch armv8l --build-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/lldb-test-build.noindex --lldb-module-cache-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/lldb-test-build.noindex/module-cache-lldb/lldb-api --clang-module-cache-dir /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/lldb-test-build.noindex/module-cache-clang/lldb-api --executable /home/tcwg-buildbot/worker/lldb-arm-ubuntu/build/./bin/lldb --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 /home/tcwg-buildbot/worker/lldb-arm-ubuntu/llvm-project/lldb/test/API/tools/lldb-dap/evaluate -p TestDAP_evaluate.py
--
Exit Code: 1

Command Output (stdout):
--
lldb version 21.0.0git (https://github.com/llvm/llvm-project.git revision 834d4260a042cd33e6346256aab66eca7390e83b)
  clang revision 834d4260a042cd33e6346256aab66eca7390e83b
  llvm revision 834d4260a042cd33e6346256aab66eca7390e83b
Skipping the following test categories: ['libc++', 'dsym', 'gmodules', 'debugserver', 'objc']

--
Command Output (stderr):
--
========= DEBUG ADAPTER PROTOCOL LOGS =========
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