[llvm] [InstCombine] Transform high latency, dependent FSQRT/FDIV into FMUL (PR #87474)
LLVM Continuous Integration via llvm-commits
llvm-commits at lists.llvm.org
Thu Jan 16 22:59:17 PST 2025
llvm-ci wrote:
LLVM Buildbot has detected a new failure on builder `sanitizer-x86_64-linux-bootstrap-ubsan` running on `sanitizer-buildbot3` while building `llvm` at step 2 "annotate".
Full details are available at: https://lab.llvm.org/buildbot/#/builders/25/builds/5712
<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-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/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: 88353 tests, 88 workers --
Testing: 0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.
FAIL: LLVM :: Transforms/InstCombine/fsqrtdiv-transform.ll (67601 of 88353)
******************** TEST 'LLVM :: Transforms/InstCombine/fsqrtdiv-transform.ll' FAILED ********************
Exit Code: 2
Command Output (stderr):
--
RUN: at line 2: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -S -passes='instcombine<no-verify-fixpoint>' < /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/Transforms/InstCombine/fsqrtdiv-transform.ll | /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/FileCheck /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/Transforms/InstCombine/fsqrtdiv-transform.ll
+ /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -S '-passes=instcombine<no-verify-fixpoint>'
+ /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/FileCheck /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/Transforms/InstCombine/fsqrtdiv-transform.ll
/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:110:37: runtime error: reference binding to misaligned address 0x5785938ba7f1 for type 'const llvm::Value', which requires 8 byte alignment
0x5785938ba7f1: note: pointer points here
<memory cannot be printed>
#0 0x5780bc4b61aa in doit /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:110:12
#1 0x5780bc4b61aa in doit /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:137:12
#2 0x5780bc4b61aa in doit /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:127:12
#3 0x5780bc4b61aa in isPossible /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:255:12
#4 0x5780bc4b61aa in isPossible /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:509:12
#5 0x5780bc4b61aa in isa<llvm::Value, llvm::Value *> /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:549:10
#6 0x5780bc4b61aa in cast_if_present<llvm::Value, llvm::Value> /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:706:3
#7 0x5780bc4b61aa in cast_or_null<llvm::Value, llvm::Value> /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:729:10
#8 0x5780bc4b61aa in getOperand /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/InstrTypes.h:395:1
#9 0x5780bc4b61aa in foldFDivPowDivisor(llvm::BinaryOperator&, llvm::IRBuilder<llvm::TargetFolder, llvm::IRBuilderCallbackInserter>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp:1935:18
#10 0x5780bc4b483f in llvm::InstCombinerImpl::visitFDiv(llvm::BinaryOperator&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp:2196:26
#11 0x5780bc3d88c8 in llvm::InstCombinerImpl::run() /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp:5234:31
#12 0x5780bc3dd966 in combineInstructionsOverFunction(llvm::Function&, llvm::InstructionWorklist&, llvm::AAResults*, llvm::AssumptionCache&, llvm::TargetLibraryInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::OptimizationRemarkEmitter&, llvm::BlockFrequencyInfo*, llvm::BranchProbabilityInfo*, llvm::ProfileSummaryInfo*, llvm::InstCombineOptions const&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp:5551:37
#13 0x5780bc3dcee0 in llvm::InstCombinePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp:5614:8
#14 0x5780bceec851 in llvm::detail::PassModel<llvm::Function, llvm::InstCombinePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:90:17
#15 0x5780bb4eacd2 in llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:81:38
#16 0x5780bcef73e1 in llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:90:17
#17 0x5780bb4f2af0 in llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/IR/PassManager.cpp:124:38
#18 0x5780bceebd91 in llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:90:17
#19 0x5780bb4e99a2 in llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:81:38
#20 0x5780bce75084 in llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::__1::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/tools/opt/NewPMDriver.cpp:541:7
#21 0x5780bb1a2363 in optMain /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/tools/opt/optdriver.cpp:739:12
#22 0x71138cc2a3b7 (/lib/x86_64-linux-gnu/libc.so.6+0x2a3b7) (BuildId: 5f3f024b472f38389da3a2f567b3d0eaa8835ca2)
#23 0x71138cc2a47a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a47a) (BuildId: 5f3f024b472f38389da3a2f567b3d0eaa8835ca2)
#24 0x5780bb170164 in _start (/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt+0x6fa7164)
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:110:37
Step 11 (stage2/ubsan check) failure: stage2/ubsan check (failure)
...
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/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: 88353 tests, 88 workers --
Testing: 0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.
FAIL: LLVM :: Transforms/InstCombine/fsqrtdiv-transform.ll (67601 of 88353)
******************** TEST 'LLVM :: Transforms/InstCombine/fsqrtdiv-transform.ll' FAILED ********************
Exit Code: 2
Command Output (stderr):
--
RUN: at line 2: /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -S -passes='instcombine<no-verify-fixpoint>' < /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/Transforms/InstCombine/fsqrtdiv-transform.ll | /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/FileCheck /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/Transforms/InstCombine/fsqrtdiv-transform.ll
+ /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt -S '-passes=instcombine<no-verify-fixpoint>'
+ /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/FileCheck /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/test/Transforms/InstCombine/fsqrtdiv-transform.ll
/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:110:37: runtime error: reference binding to misaligned address 0x5785938ba7f1 for type 'const llvm::Value', which requires 8 byte alignment
0x5785938ba7f1: note: pointer points here
<memory cannot be printed>
#0 0x5780bc4b61aa in doit /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:110:12
#1 0x5780bc4b61aa in doit /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:137:12
#2 0x5780bc4b61aa in doit /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:127:12
#3 0x5780bc4b61aa in isPossible /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:255:12
#4 0x5780bc4b61aa in isPossible /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:509:12
#5 0x5780bc4b61aa in isa<llvm::Value, llvm::Value *> /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:549:10
#6 0x5780bc4b61aa in cast_if_present<llvm::Value, llvm::Value> /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:706:3
#7 0x5780bc4b61aa in cast_or_null<llvm::Value, llvm::Value> /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:729:10
#8 0x5780bc4b61aa in getOperand /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/InstrTypes.h:395:1
#9 0x5780bc4b61aa in foldFDivPowDivisor(llvm::BinaryOperator&, llvm::IRBuilder<llvm::TargetFolder, llvm::IRBuilderCallbackInserter>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp:1935:18
#10 0x5780bc4b483f in llvm::InstCombinerImpl::visitFDiv(llvm::BinaryOperator&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp:2196:26
#11 0x5780bc3d88c8 in llvm::InstCombinerImpl::run() /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp:5234:31
#12 0x5780bc3dd966 in combineInstructionsOverFunction(llvm::Function&, llvm::InstructionWorklist&, llvm::AAResults*, llvm::AssumptionCache&, llvm::TargetLibraryInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::OptimizationRemarkEmitter&, llvm::BlockFrequencyInfo*, llvm::BranchProbabilityInfo*, llvm::ProfileSummaryInfo*, llvm::InstCombineOptions const&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp:5551:37
#13 0x5780bc3dcee0 in llvm::InstCombinePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp:5614:8
#14 0x5780bceec851 in llvm::detail::PassModel<llvm::Function, llvm::InstCombinePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:90:17
#15 0x5780bb4eacd2 in llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:81:38
#16 0x5780bcef73e1 in llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:90:17
#17 0x5780bb4f2af0 in llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/IR/PassManager.cpp:124:38
#18 0x5780bceebd91 in llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:90:17
#19 0x5780bb4e99a2 in llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/IR/PassManagerImpl.h:81:38
#20 0x5780bce75084 in llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::__1::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/tools/opt/NewPMDriver.cpp:541:7
#21 0x5780bb1a2363 in optMain /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/tools/opt/optdriver.cpp:739:12
#22 0x71138cc2a3b7 (/lib/x86_64-linux-gnu/libc.so.6+0x2a3b7) (BuildId: 5f3f024b472f38389da3a2f567b3d0eaa8835ca2)
#23 0x71138cc2a47a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a47a) (BuildId: 5f3f024b472f38389da3a2f567b3d0eaa8835ca2)
#24 0x5780bb170164 in _start (/home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm_build_ubsan/bin/opt+0x6fa7164)
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/b/sanitizer-x86_64-linux-bootstrap-ubsan/build/llvm-project/llvm/include/llvm/Support/Casting.h:110:37
```
</details>
https://github.com/llvm/llvm-project/pull/87474
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