[llvm] [Analysis] Guard logf128 cst folding (PR #106543)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-debian-cpp20` running on `clang-debian-cpp20` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/108/builds/3064

<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 :: ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll' FAILED ********************
Exit Code: 2

Command Output (stderr):
--
RUN: at line 1: /vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli -jit-kind=orc-lazy -compile-threads=2 -thread-entry hello /vol/worker/clang-debian-cpp20/clang-debian-cpp20/llvm-project/llvm/test/ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll | /vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/FileCheck /vol/worker/clang-debian-cpp20/clang-debian-cpp20/llvm-project/llvm/test/ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll
+ /vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli -jit-kind=orc-lazy -compile-threads=2 -thread-entry hello /vol/worker/clang-debian-cpp20/clang-debian-cpp20/llvm-project/llvm/test/ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll
+ /vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/FileCheck /vol/worker/clang-debian-cpp20/clang-debian-cpp20/llvm-project/llvm/test/ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: /vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli -jit-kind=orc-lazy -compile-threads=2 -thread-entry hello /vol/worker/clang-debian-cpp20/clang-debian-cpp20/llvm-project/llvm/test/ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll
 #0 0x000059ea33480738 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli+0x1364738)
 #1 0x000059ea3347e1ad llvm::sys::RunSignalHandlers() (/vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli+0x13621ad)
 #2 0x000059ea33480e08 SignalHandler(int) Signals.cpp:0:0
 #3 0x00007b2d6ebd6510 (/lib/x86_64-linux-gnu/libc.so.6+0x3c510)
 #4 0x00007b2d6ec1ebc0 _pthread_cleanup_pop (/lib/x86_64-linux-gnu/libc.so.6+0x84bc0)
 #5 0x00007b2d6ec21828 pthread_cond_wait (/lib/x86_64-linux-gnu/libc.so.6+0x87828)
 #6 0x000059ea33046b9b llvm::orc::DynamicThreadPoolTaskDispatcher::shutdown() (/vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli+0xf2ab9b)
 #7 0x000059ea3304619e llvm::orc::SelfExecutorProcessControl::disconnect() (/vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli+0xf2a19e)
 #8 0x000059ea32f77691 llvm::orc::ExecutionSession::endSession() (/vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli+0xe5b691)
 #9 0x000059ea32fe1416 llvm::orc::LLJIT::~LLJIT() (/vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli+0xec5416)
#10 0x000059ea32fe6524 llvm::orc::LLLazyJIT::~LLLazyJIT() (/vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli+0xeca524)
#11 0x000059ea325ead2e runOrcJIT(char const*) (/vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli+0x4ced2e)
#12 0x000059ea325e5989 main (/vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli+0x4c9989)
#13 0x00007b2d6ebc16ca (/lib/x86_64-linux-gnu/libc.so.6+0x276ca)
#14 0x00007b2d6ebc1785 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x27785)
#15 0x000059ea325e2601 _start (/vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/lli+0x4c6601)
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /vol/worker/clang-debian-cpp20/clang-debian-cpp20/build/bin/FileCheck /vol/worker/clang-debian-cpp20/clang-debian-cpp20/llvm-project/llvm/test/ExecutionEngine/OrcLazy/multiple-compile-threads-basic.ll

--

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


```

</details>

https://github.com/llvm/llvm-project/pull/106543