[llvm] [Analysis] Ensure use of strict fp exceptions in ConstantFolding (PR #136139)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `polly-x86_64-linux-shared` running on `polly-x86_64-gce2` while building `llvm` at step 5 "build".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/97/builds/6350

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

```
Step 5 (build) failure: 'ninja' (failure)
...
[1207/4390] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/CallGraph.cpp.o
[1208/4390] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/CallGraphSCCPass.cpp.o
[1209/4390] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/CallPrinter.cpp.o
[1210/4390] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/CaptureTracking.cpp.o
[1211/4390] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/CmpInstAnalysis.cpp.o
[1212/4390] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/CostModel.cpp.o
[1213/4390] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/CodeMetrics.cpp.o
[1214/4390] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/CtxProfAnalysis.cpp.o
[1215/4390] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/CycleAnalysis.cpp.o
[1216/4390] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ConstantFolding.cpp.o
FAILED: lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ConstantFolding.cpp.o 
ccache /usr/bin/c++ -DGTEST_HAS_RTTI=0 -DHAS_LOGF128 -DLLVM_EXPORTS -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.obj/lib/Analysis -I/home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.src/llvm/lib/Analysis -I/home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.obj/include -I/home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.src/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -fPIC  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -std=c++17 -ffp-exception-behavior=strict -MD -MT lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ConstantFolding.cpp.o -MF lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ConstantFolding.cpp.o.d -o lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ConstantFolding.cpp.o -c /home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.src/llvm/lib/Analysis/ConstantFolding.cpp
c++: error: unrecognized command-line option ‘-ffp-exception-behavior=strict’
[1217/4390] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/DDG.cpp.o
[1218/4390] Building CXX object lib/CodeGen/AsmPrinter/CMakeFiles/LLVMAsmPrinter.dir/AsmPrinter.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/136139