LoopUnrollAndJamPass crash: GenericLoopInfo.h:146: [...] Assertion `!isInvalid() && "Loop not in a valid state!"' failed.

[mikaelholmen]

llvm commit: 6805d7e

Reproduce with:
opt -passes="loop(invalidate<all>,loop-unroll-and-jam,loop-unroll-and-jam)" bbi-103085.ll -o /dev/null -S -unroll-and-jam-count=4 -mcpu=cortex-a55 -mtriple=aarch64

Result:

opt: ../include/llvm/Support/GenericLoopInfo.h:146: const std::vector<LoopT *> &llvm::LoopBase<llvm::BasicBlock, llvm::Loop>::getSubLoops() const [BlockT = llvm::BasicBlock, LoopT = llvm::Loop]: Assertion `!isInvalid() && "Loop not in a valid state!"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: build-all/bin/opt -passes=loop(invalidate<all>,loop-unroll-and-jam,loop-unroll-and-jam) bbi-103085.ll -o /dev/null -S -unroll-and-jam-count=4 -mcpu=cortex-a55 -mtriple=aarch64
1.	Running pass "function(loop(invalidate<all>,loop-unroll-and-jam,loop-unroll-and-jam))" on module "bbi-103085.ll"
2.	Running pass "loop(invalidate<all>,loop-unroll-and-jam,loop-unroll-and-jam)" on function "test_it"
 #0 0x0000564cc1e14ac6 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (build-all/bin/opt+0x45ceac6)
 #1 0x0000564cc1e1250e llvm::sys::RunSignalHandlers() (build-all/bin/opt+0x45cc50e)
 #2 0x0000564cc1e15379 SignalHandler(int) Signals.cpp:0:0
 #3 0x00007fafbeb0bd10 __restore_rt (/lib64/libpthread.so.0+0x12d10)
 #4 0x00007fafbc4ab52f raise (/lib64/libc.so.6+0x4e52f)
 #5 0x00007fafbc47ee65 abort (/lib64/libc.so.6+0x21e65)
 #6 0x00007fafbc47ed39 _nl_load_domain.cold.0 (/lib64/libc.so.6+0x21d39)
 #7 0x00007fafbc4a3e86 (/lib64/libc.so.6+0x46e86)
 #8 0x0000564cc274b6cb void llvm::appendReversedLoopsToWorklist<llvm::iterator_range<std::reverse_iterator<llvm::Loop* const*>>>(llvm::iterator_range<std::reverse_iterator<llvm::Loop* const*>>&&, llvm::SmallPriorityWorklist<llvm::Loop*, 4u>&) (build-all/bin/opt+0x4f056cb)
 #9 0x0000564cc274b42e void llvm::appendLoopsToWorklist<llvm::ArrayRef<llvm::Loop*>&>(llvm::ArrayRef<llvm::Loop*>&, llvm::SmallPriorityWorklist<llvm::Loop*, 4u>&) (build-all/bin/opt+0x4f0542e)
#10 0x0000564cc381dfce llvm::LoopUnrollAndJamPass::run(llvm::LoopNest&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) (build-all/bin/opt+0x5fd7fce)
#11 0x0000564cc328d01d llvm::detail::PassModel<llvm::LoopNest, llvm::LoopUnrollAndJamPass, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::run(llvm::LoopNest&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) PassBuilderPipelines.cpp:0:0
#12 0x0000564cc34ff5ed std::optional<llvm::PreservedAnalyses> llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::runSinglePass<llvm::LoopNest, std::unique_ptr<llvm::detail::PassConcept<llvm::LoopNest, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>, std::default_delete<llvm::detail::PassConcept<llvm::LoopNest, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>>>>(llvm::LoopNest&, std::unique_ptr<llvm::detail::PassConcept<llvm::LoopNest, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>, std::default_delete<llvm::detail::PassConcept<llvm::LoopNest, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>>>&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&, llvm::PassInstrumentation&) (build-all/bin/opt+0x5cb95ed)
#13 0x0000564cc34fe8e5 llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::runWithLoopNestPasses(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) (build-all/bin/opt+0x5cb88e5)
#14 0x0000564cc34fe480 llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::run(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) (build-all/bin/opt+0x5cb8480)
#15 0x0000564cc327a8bd llvm::detail::PassModel<llvm::Loop, llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::run(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) PassBuilderPipelines.cpp:0:0
#16 0x0000564cc35001a1 llvm::FunctionToLoopPassAdaptor::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (build-all/bin/opt+0x5cba1a1)
#17 0x0000564cc327eedd llvm::detail::PassModel<llvm::Function, llvm::FunctionToLoopPassAdaptor, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) PassBuilderPipelines.cpp:0:0
#18 0x0000564cc2035a27 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (build-all/bin/opt+0x47efa27)
#19 0x0000564cc32846cd llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) PassBuilderPipelines.cpp:0:0
#20 0x0000564cc203a5fe llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (build-all/bin/opt+0x47f45fe)
#21 0x0000564cc327c19d llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) PassBuilderPipelines.cpp:0:0
#22 0x0000564cc2034717 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (build-all/bin/opt+0x47ee717)
#23 0x0000564cc320468c 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::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (build-all/bin/opt+0x59be68c)
#24 0x0000564cc1dd7712 optMain (build-all/bin/opt+0x4591712)
#25 0x00007fafbc4977e5 __libc_start_main (/lib64/libc.so.6+0x3a7e5)
#26 0x0000564cc1dd532e _start (build-all/bin/opt+0x458f32e)
Abort

bbi-103085.ll.gz

[mikaelholmen]

The opt pipeline used to triggered this is non-standard and generated by a fuzzer, so I'm labelling this with "generated by fuzzer". I don't know if that the intended use. If not, please let me know.

[davemgreen]

Do you have the IR reproducer too? Thanks

[mikaelholmen]

Do you have the IR reproducer too? Thanks

Bah, sorry. Attached it to the original post now.
Thanks!

[mikaelholmen]

I noticed that if we build opt with ASAN and run the bbi-103085.ll testcase we get

==3349467==ERROR: AddressSanitizer: use-after-poison on address 0x521000007a40 at pc 0x55713d205877 bp 0x7ffdd1999e50 sp 0x7ffdd1999e48
READ of size 1 at 0x521000007a40 thread T0
    #0 0x55713d205876 in isInvalid /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/GenericLoopInfo.h:219:12
    #1 0x55713d205876 in getSubLoops /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/GenericLoopInfo.h:146:5
    #2 0x55713d205876 in begin /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/GenericLoopInfo.h:156:35
    #3 0x55713d205876 in void llvm::appendReversedLoopsToWorklist<llvm::iterator_range<std::__1::reverse_iterator<llvm::Loop* const*>>>(llvm::iterator_range<std::__1::reverse_iterator<llvm::Loop* const*>>&&, llvm::SmallPriorityWorklist<llvm::Loop*, 4u>&) /repo/llvm/build-all-bbisdk-asan/../lib/Transforms/Utils/LoopUtils.cpp:1808:34
    #4 0x55713d204ad9 in void llvm::appendLoopsToWorklist<llvm::ArrayRef<llvm::Loop*>&>(llvm::ArrayRef<llvm::Loop*>&, llvm::SmallPriorityWorklist<llvm::Loop*, 4u>&) /repo/llvm/build-all-bbisdk-asan/../lib/Transforms/Utils/LoopUtils.cpp:1820:3
    #5 0x55714083fe1b in tryToUnrollAndJamLoop /repo/llvm/build-all-bbisdk-asan/../lib/Transforms/Scalar/LoopUnrollAndJamPass.cpp:436:3
    #6 0x55714083fe1b in llvm::LoopUnrollAndJamPass::run(llvm::LoopNest&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) /repo/llvm/build-all-bbisdk-asan/../lib/Transforms/Scalar/LoopUnrollAndJamPass.cpp:460:8
    #7 0x55713f72db11 in llvm::detail::PassModel<llvm::LoopNest, llvm::LoopUnrollAndJamPass, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::run(llvm::LoopNest&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerInternal.h:91:17
    #8 0x55713fec0dd7 in std::__1::optional<llvm::PreservedAnalyses> llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::runSinglePass<llvm::LoopNest, std::__1::unique_ptr<llvm::detail::PassConcept<llvm::LoopNest, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>, std::__1::default_delete<llvm::detail::PassConcept<llvm::LoopNest, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>>>>(llvm::LoopNest&, std::__1::unique_ptr<llvm::detail::PassConcept<llvm::LoopNest, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>, std::__1::default_delete<llvm::detail::PassConcept<llvm::LoopNest, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>>>&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&, llvm::PassInstrumentation&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/Transforms/Scalar/LoopPassManager.h:375:32
    #9 0x55713febe67c in llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::runWithLoopNestPasses(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) /repo/llvm/build-all-bbisdk-asan/../lib/Transforms/Scalar/LoopPassManager.cpp:112:16
    #10 0x55713febdd61 in llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::run(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) /repo/llvm/build-all-bbisdk-asan/../lib/Transforms/Scalar/LoopPassManager.cpp:30:32
    #11 0x55713f719901 in llvm::detail::PassModel<llvm::Loop, llvm::PassManager<llvm::Loop, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&>::run(llvm::Loop&, llvm::AnalysisManager<llvm::Loop, llvm::LoopStandardAnalysisResults&>&, llvm::LoopStandardAnalysisResults&, llvm::LPMUpdater&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerInternal.h:91:17
    #12 0x55713fec3348 in llvm::FunctionToLoopPassAdaptor::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /repo/llvm/build-all-bbisdk-asan/../lib/Transforms/Scalar/LoopPassManager.cpp:302:38
    #13 0x55713f722991 in llvm::detail::PassModel<llvm::Function, llvm::FunctionToLoopPassAdaptor, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerInternal.h:91:17
    #14 0x55713ba254c9 in llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerImpl.h:81:38
    #15 0x55713f728871 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>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerInternal.h:91:17
    #16 0x55713ba34d25 in llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /repo/llvm/build-all-bbisdk-asan/../lib/IR/PassManager.cpp:124:38
    #17 0x55713f71d491 in llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerInternal.h:91:17
    #18 0x55713ba218f9 in llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerImpl.h:81:38
    #19 0x55713f5eda5d 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) /repo/llvm/build-all-bbisdk-asan/../tools/opt/NewPMDriver.cpp:552:7
    #20 0x55713b2721b3 in optMain /repo/llvm/build-all-bbisdk-asan/../tools/opt/optdriver.cpp:725:12
    #21 0x7f6c3bae47e4 in __libc_start_main (/lib64/libc.so.6+0x3a7e4) (BuildId: 37e4ac6a7fb96950b0e6bf72d73d94f3296c77eb)
    #22 0x55713b1823ad in _start (/repo/llvm/build-all-bbisdk-asan/bin/opt+0x8cfe3ad)

0x521000007a40 is located 320 bytes inside of 4096-byte region [0x521000007900,0x521000008900)
allocated by thread T0 here:
    #0 0x55713b25a992 in operator new(unsigned long, std::align_val_t, std::nothrow_t const&) asan_new_delete.cpp:113:3
    #1 0x55713b346d4f in llvm::allocate_buffer(unsigned long, unsigned long) /repo/llvm/build-all-bbisdk-asan/../lib/Support/MemAlloc.cpp:16:18
    #2 0x55713b34a30a in Allocate /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/AllocatorBase.h:92:12
    #3 0x55713b34a30a in StartNewSlab /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/Allocator.h:346:42
    #4 0x55713b34a30a in llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator, 4096ul, 4096ul, 128ul>::AllocateSlow(unsigned long, unsigned long, llvm::Align) /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/Allocator.h:202:5
    #5 0x55713cb12443 in Allocate /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/Allocator.h:178:12
    #6 0x55713cb12443 in Allocate /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/Allocator.h:216:12
    #7 0x55713cb12443 in Allocate /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/AllocatorBase.h:53:43
    #8 0x55713cb12443 in Allocate<llvm::Loop> /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/AllocatorBase.h:76:29
    #9 0x55713cb12443 in llvm::Loop* llvm::LoopInfoBase<llvm::BasicBlock, llvm::Loop>::AllocateLoop<llvm::BasicBlock*&>(llvm::BasicBlock*&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/GenericLoopInfo.h:571:36
    #10 0x55713cb0ff50 in llvm::LoopInfoBase<llvm::BasicBlock, llvm::Loop>::analyze(llvm::DominatorTreeBase<llvm::BasicBlock, false> const&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/GenericLoopInfoImpl.h:594:18
    #11 0x55713cb23dbc in llvm::LoopAnalysis::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /repo/llvm/build-all-bbisdk-asan/../lib/Analysis/LoopInfo.cpp:977:6
    #12 0x55714109e4e7 in llvm::detail::AnalysisPassModel<llvm::Function, llvm::LoopAnalysis, llvm::AnalysisManager<llvm::Function>::Invalidator>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerInternal.h:321:14
    #13 0x55713ba300ab in llvm::AnalysisManager<llvm::Function>::getResultImpl(llvm::AnalysisKey*, llvm::Function&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerImpl.h:156:35
    #14 0x55713d1e67b4 in getResult<llvm::LoopAnalysis> /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManager.h:414:9
    #15 0x55713d1e67b4 in llvm::LoopSimplifyPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /repo/llvm/build-all-bbisdk-asan/../lib/Transforms/Utils/LoopSimplify.cpp:825:22
    #16 0x55713f719f11 in llvm::detail::PassModel<llvm::Function, llvm::LoopSimplifyPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerInternal.h:91:17
    #17 0x55713ba254c9 in llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerImpl.h:81:38
    #18 0x55713fec1dce in llvm::FunctionToLoopPassAdaptor::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /repo/llvm/build-all-bbisdk-asan/../lib/Transforms/Scalar/LoopPassManager.cpp:209:34
    #19 0x55713f722991 in llvm::detail::PassModel<llvm::Function, llvm::FunctionToLoopPassAdaptor, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerInternal.h:91:17
    #20 0x55713ba254c9 in llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerImpl.h:81:38
    #21 0x55713f728871 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>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerInternal.h:91:17
    #22 0x55713ba34d25 in llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /repo/llvm/build-all-bbisdk-asan/../lib/IR/PassManager.cpp:124:38
    #23 0x55713f71d491 in llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerInternal.h:91:17
    #24 0x55713ba218f9 in llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /repo/llvm/build-all-bbisdk-asan/../include/llvm/IR/PassManagerImpl.h:81:38
    #25 0x55713f5eda5d 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) /repo/llvm/build-all-bbisdk-asan/../tools/opt/NewPMDriver.cpp:552:7
    #26 0x55713b2721b3 in optMain /repo/llvm/build-all-bbisdk-asan/../tools/opt/optdriver.cpp:725:12
    #27 0x7f6c3bae47e4 in __libc_start_main (/lib64/libc.so.6+0x3a7e4) (BuildId: 37e4ac6a7fb96950b0e6bf72d73d94f3296c77eb)

SUMMARY: AddressSanitizer: use-after-poison /repo/llvm/build-all-bbisdk-asan/../include/llvm/Support/GenericLoopInfo.h:219:12 in isInvalid
Shadow bytes around the buggy address:
  0x521000007780: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x521000007800: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x521000007880: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x521000007900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x521000007980: 00 00 00 00 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
=>0x521000007a00: f7 f7 f7 f7 f7 f7 f7 f7[f7]f7 00 00 00 00 00 00
  0x521000007a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f7 f7
  0x521000007b00: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
  0x521000007b80: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
  0x521000007c00: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
  0x521000007c80: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==3349467==ABORTING