[clang] [clang][Sema] Merge Check[Sizeless]VectorConditionalTypes implementations (PR #169165)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-darwin` running on `doug-worker-3` while building `clang` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/23/builds/15903

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

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM-Unit :: CAS/./CASTests/9/18' FAILED ********************
Script(shard):
--
GTEST_OUTPUT=json:/Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/unittests/CAS/./CASTests-LLVM-Unit-61451-9-18.json GTEST_SHUFFLE=0 GTEST_TOTAL_SHARDS=18 GTEST_SHARD_INDEX=9 /Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/unittests/CAS/./CASTests
--

Note: This is test shard 10 of 18.
[==========] Running 2 tests from 2 test suites.
[----------] Global test environment set-up.
[----------] 1 test from OnDiskCASTest
[ RUN      ] OnDiskCASTest.UnifiedOnDiskCacheTest
/Users/buildbot/buildbot-root/x86_64-darwin/llvm-project/llvm/unittests/CAS/UnifiedOnDiskCacheTest.cpp:55: Failure
Value of: llvm::detail::TakeError(UnifiedOnDiskCache::open(Temp.path(), SizeLimit, "blake3", sizeof(HashType)) .moveInto(UniDB))
Expected: succeeded
  Actual: failed  ('/private/var/folders/dh/qpq6gp912dd8pr2b150rqlyw0000gp/T/lit-tmp-72tzr8ak/ondisk-unified-bc4562/v1.1/data.v1': No space left on device)

 #0 0x000000010378c4f8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/unittests/CAS/CASTests+0x10009f4f8)
 #1 0x000000010378a326 llvm::sys::RunSignalHandlers() (/Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/unittests/CAS/CASTests+0x10009d326)
 #2 0x000000010378d097 SignalHandler(int, __siginfo*, void*) (/Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/unittests/CAS/CASTests+0x1000a0097)
 #3 0x00007ff814e76fdd (/usr/lib/system/libsystem_platform.dylib+0x7ff80046afdd)
 #4 0x00007fea82f00000
 #5 0x00000001037bea8c testing::Test::Run() (/Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/unittests/CAS/CASTests+0x1000d1a8c)
 #6 0x00000001037bfed9 testing::TestInfo::Run() (/Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/unittests/CAS/CASTests+0x1000d2ed9)
 #7 0x00000001037c0c87 testing::TestSuite::Run() (/Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/unittests/CAS/CASTests+0x1000d3c87)
 #8 0x00000001037cf2be testing::internal::UnitTestImpl::RunAllTests() (/Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/unittests/CAS/CASTests+0x1000e22be)
 #9 0x00000001037ce71d testing::UnitTest::Run() (/Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/unittests/CAS/CASTests+0x1000e171d)
#10 0x00000001037adbbb main (/Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/unittests/CAS/CASTests+0x1000c0bbb)
#11 0x00007ff814abc345

--
exit: -11
--
shard JSON output does not exist: /Volumes/RAMDisk/buildbot-root/x86_64-darwin/build/unittests/CAS/./CASTests-LLVM-Unit-61451-9-18.json
********************


```

</details>

https://github.com/llvm/llvm-project/pull/169165