[clang] [clang][bytecode] Loosen assertion This() for array elements (PR #130399)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-aarch64-linux-bootstrap-msan` running on `sanitizer-buildbot9` while building `clang` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/94/builds/5061

<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)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 84044 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90
FAIL: LLVM-Unit :: Support/./SupportTests/47/88 (79918 of 84044)
******************** TEST 'LLVM-Unit :: Support/./SupportTests/47/88' FAILED ********************
Script(shard):
--
GTEST_OUTPUT=json:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/unittests/Support/./SupportTests-LLVM-Unit-3250804-47-88.json GTEST_SHUFFLE=0 GTEST_TOTAL_SHARDS=88 GTEST_SHARD_INDEX=47 /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/unittests/Support/./SupportTests
--

Script:
--
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/unittests/Support/./SupportTests --gtest_filter=Caching.WriteAfterCommit
--
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/unittests/Support/Caching.cpp:103: Failure
Value of: AddStream
  Actual: false
Expected: true


/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/unittests/Support/Caching.cpp:103
Value of: AddStream
  Actual: false
Expected: true



********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. 
Slowest Tests:
--------------------------------------------------------------------------
23.51s: LLVM :: tools/llvm-reduce/parallel-workitem-kill.ll
21.81s: Clang :: Driver/fsanitize.c
15.40s: Clang :: Preprocessor/riscv-target-features.c
14.68s: Clang :: Driver/arm-cortex-cpus-2.c
14.45s: Clang :: Driver/arm-cortex-cpus-1.c
13.85s: Clang :: OpenMP/target_defaultmap_codegen_01.cpp
13.20s: Clang :: OpenMP/target_update_codegen.cpp
11.03s: Clang :: Preprocessor/arm-target-features.c
10.85s: Clang :: Preprocessor/aarch64-target-features.c
10.20s: Clang :: Driver/clang_f_opts.c
10.02s: LLVM-Unit :: Support/./SupportTests/ProgramEnvTest/TestExecuteNoWaitDetached
Step 14 (stage3/msan check) failure: stage3/msan check (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:512: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 84044 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90
FAIL: LLVM-Unit :: Support/./SupportTests/47/88 (79918 of 84044)
******************** TEST 'LLVM-Unit :: Support/./SupportTests/47/88' FAILED ********************
Script(shard):
--
GTEST_OUTPUT=json:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/unittests/Support/./SupportTests-LLVM-Unit-3250804-47-88.json GTEST_SHUFFLE=0 GTEST_TOTAL_SHARDS=88 GTEST_SHARD_INDEX=47 /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/unittests/Support/./SupportTests
--

Script:
--
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build2_msan/unittests/Support/./SupportTests --gtest_filter=Caching.WriteAfterCommit
--
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/unittests/Support/Caching.cpp:103: Failure
Value of: AddStream
  Actual: false
Expected: true


/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/unittests/Support/Caching.cpp:103
Value of: AddStream
  Actual: false
Expected: true



********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. 
Slowest Tests:
--------------------------------------------------------------------------
23.51s: LLVM :: tools/llvm-reduce/parallel-workitem-kill.ll
21.81s: Clang :: Driver/fsanitize.c
15.40s: Clang :: Preprocessor/riscv-target-features.c
14.68s: Clang :: Driver/arm-cortex-cpus-2.c
14.45s: Clang :: Driver/arm-cortex-cpus-1.c
13.85s: Clang :: OpenMP/target_defaultmap_codegen_01.cpp
13.20s: Clang :: OpenMP/target_update_codegen.cpp
11.03s: Clang :: Preprocessor/arm-target-features.c
10.85s: Clang :: Preprocessor/aarch64-target-features.c
10.20s: Clang :: Driver/clang_f_opts.c
10.02s: LLVM-Unit :: Support/./SupportTests/ProgramEnvTest/TestExecuteNoWaitDetached

```

</details>

https://github.com/llvm/llvm-project/pull/130399