[clang] [clang][bytecode] Implement __builtin_constant_p (PR #130143)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-aarch64-sve2-vla-2stage` running on `linaro-g4-01` while building `clang` at step 12 "ninja check 2".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/199/builds/2062

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

```
Step 12 (ninja check 2) failure: stage 2 checked (failure)
******************** TEST 'LLVM-Unit :: Support/./SupportTests/47/88' FAILED ********************
Script(shard):
--
GTEST_OUTPUT=json:/home/tcwg-buildbot/worker/clang-aarch64-sve2-vla-2stage/stage2/unittests/Support/./SupportTests-LLVM-Unit-1723671-47-88.json GTEST_SHUFFLE=0 GTEST_TOTAL_SHARDS=88 GTEST_SHARD_INDEX=47 /home/tcwg-buildbot/worker/clang-aarch64-sve2-vla-2stage/stage2/unittests/Support/./SupportTests
--

Script:
--
/home/tcwg-buildbot/worker/clang-aarch64-sve2-vla-2stage/stage2/unittests/Support/./SupportTests --gtest_filter=Caching.WriteAfterCommit
--
/home/tcwg-buildbot/worker/clang-aarch64-sve2-vla-2stage/llvm/llvm/unittests/Support/Caching.cpp:103: Failure
Value of: AddStream
  Actual: false
Expected: true


/home/tcwg-buildbot/worker/clang-aarch64-sve2-vla-2stage/llvm/llvm/unittests/Support/Caching.cpp:103
Value of: AddStream
  Actual: false
Expected: true



********************


```

</details>

https://github.com/llvm/llvm-project/pull/130143