[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 `mlir-nvidia-gcc7` running on `mlir-nvidia` while building `llvm` at step 6 "build-check-mlir-build-only".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/116/builds/12158

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

```
Step 6 (build-check-mlir-build-only) failure: build (failure)
...
       for (auto &[__, Subctx] : SubCtxSet)
                             ^
/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Analysis/CtxProfAnalysis.cpp:629:29: warning: unused variable ‘_’ [-Wunused-variable]
     for (auto &[_, SubCtxSet] : Ctx.callsites())
                             ^
10.577 [2961/16/1794] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/CycleAnalysis.cpp.o
10.580 [2960/16/1795] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ConstraintSystem.cpp.o
10.585 [2959/16/1796] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/DDGPrinter.cpp.o
10.586 [2958/16/1797] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/DDG.cpp.o
10.587 [2957/16/1798] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ConstantFolding.cpp.o
FAILED: lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ConstantFolding.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes CCACHE_SLOPPINESS=pch_defines,time_macros /usr/bin/ccache /usr/bin/g++-7 -DGTEST_HAS_RTTI=0 -DHAS_LOGF128 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.obj/lib/Analysis -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Analysis -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.obj/include -I/vol/worker/mlir-nvidia/mlir-nvidia-gcc7/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-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -Wno-misleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -std=c++1z -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 /vol/worker/mlir-nvidia/mlir-nvidia-gcc7/llvm.src/llvm/lib/Analysis/ConstantFolding.cpp
g++-7: error: unrecognized command line option ‘-ffp-exception-behavior=strict’
10.587 [2957/15/1799] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/Delinearization.cpp.o
10.591 [2957/14/1800] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/DevelopmentModeInlineAdvisor.cpp.o
10.593 [2957/13/1801] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/DependenceGraphBuilder.cpp.o
10.594 [2957/12/1802] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/DependenceAnalysis.cpp.o
10.596 [2957/11/1803] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/DemandedBits.cpp.o
10.598 [2957/10/1804] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/DomPrinter.cpp.o
10.598 [2957/9/1805] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/DomConditionCache.cpp.o
10.599 [2957/8/1806] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/DominanceFrontier.cpp.o
10.604 [2957/7/1807] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/DomTreeUpdater.cpp.o
11.077 [2957/6/1808] Building X86GenFastISel.inc...
11.763 [2957/5/1809] Building X86GenGlobalISel.inc...
13.226 [2957/4/1810] Building X86GenDAGISel.inc...
14.595 [2957/3/1811] Building X86GenSubtargetInfo.inc...
15.835 [2957/2/1812] Building X86GenInstrInfo.inc...
26.803 [2957/1/1813] 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