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

Mon Apr 28 02:26:45 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lldb-remote-linux-ubuntu` running on `as-builder-9` while building `llvm` at step 7 "build-default".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/195/builds/8230

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

```
Step 7 (build-default) failure: cmake (failure)
...
9.954 [2604/66/2664] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/MemorySSA.cpp.o
9.955 [2603/66/2665] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/MemorySSAUpdater.cpp.o
9.955 [2602/66/2666] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ModelUnderTrainingRunner.cpp.o
9.956 [2601/66/2667] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ModuleDebugInfoPrinter.cpp.o
9.957 [2600/66/2668] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/MustExecute.cpp.o
9.957 [2599/66/2669] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/NoInferenceModelRunner.cpp.o
9.958 [2598/66/2670] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ObjCARCAliasAnalysis.cpp.o
9.959 [2597/66/2671] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ObjCARCAnalysisUtils.cpp.o
9.960 [2596/66/2672] Building CXX object tools/clang/lib/StaticAnalyzer/Checkers/CMakeFiles/obj.clangStaticAnalyzerCheckers.dir/DynamicTypePropagation.cpp.o
9.960 [2595/66/2673] 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 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/lib/Analysis -I/home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/llvm/lib/Analysis -I/home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/build/include -I/home/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/llvm/include -D__OPTIMIZE__ -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-maybe-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 -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -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/buildbot/worker/as-builder-9/lldb-remote-linux-ubuntu/llvm-project/llvm/lib/Analysis/ConstantFolding.cpp
c++: error: unrecognized command-line option ‘-ffp-exception-behavior=strict’
9.961 [2595/65/2674] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ModuleSummaryAnalysis.cpp.o
9.961 [2595/64/2675] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ObjCARCInstKind.cpp.o
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9.963 [2595/60/2679] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/PhiValues.cpp.o
9.963 [2595/59/2680] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/PostDominators.cpp.o
9.963 [2595/58/2681] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ProfileSummaryInfo.cpp.o
9.964 [2595/57/2682] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/PtrUseVisitor.cpp.o
9.964 [2595/56/2683] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/RegionInfo.cpp.o
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9.969 [2595/44/2695] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/SyntheticCountsUtils.cpp.o
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9.970 [2595/42/2697] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/TargetLibraryInfo.cpp.o
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9.970 [2595/40/2699] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/TensorSpec.cpp.o
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9.974 [2595/30/2709] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/VectorUtils.cpp.o

```

</details>

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