[ThinLTO] Support aliased GlobalIFunc

[SchrodingerZhu]

Summary

Fixes https://github.com/llvm/llvm-project/issues/56290: when an ifunc is aliased in LTO, clang will attempt to create an alias summary; however, as ifunc is not included in the module summary, doing so will lead to problems.

[SchrodingerZhu]

Updating D129009: [llvm.analysis] Fix LTO for aliased IFuncs.

As https://github.com/llvm/llvm-project/issues/56290 indicates,
when an ifunc is aliased in LTO, clang will attempt to create
an alias summary; however, as ifunc is not included in the
module summary...

[SchrodingerZhu]

update code area

[SchrodingerZhu]

fix integration test

[MaskRay]

LG but the test needs a change.

clang/test/Analysis/alias-indirect-function-lto.c

1 ↗

(On Diff #441758)

The test is added to the wrong place. clang Analysis != llvm Analysis.

Find somewhere in llvm/test/ThinLTO.

5 ↗

(On Diff #441758)

No newline at end of file

llvm/lib/Analysis/ModuleSummaryAnalysis.cpp

672

Use an early return to avoid indenting so many lines.

[MaskRay]

As https://github.com/llvm/llvm-project/issues/56290 indicates

Write the description, followed by Fix(es)? https://github.com/llvm/llvm-project/issues/56290 on a separate line.

[nikic]

llvm/lib/Analysis/ModuleSummaryAnalysis.cpp

672

Also, please use isa<GlobalIFunc>(Aliasee) instead of inspecting the value ID.

[SchrodingerZhu]

address CR

[SchrodingerZhu]

address CR

[SchrodingerZhu]

undo wrong patch

[SchrodingerZhu]

address CR

[SchrodingerZhu]

address CR

[SchrodingerZhu]

• adjust run arg

[SchrodingerZhu]

Sorry for the noise during the process. I am really new to LLVM.

[SchrodingerZhu]

• specify target

[MaskRay]

llvm/lib/Analysis/ModuleSummaryAnalysis.cpp

655

https://llvm.org/docs/CodingStandards.html#don-t-use-braces-on-simple-single-statement-bodies-of-if-else-loop-statements

llvm/test/LTO/alias-indirect-function-lto.c

1 ↗

(On Diff #441830)

llvm/test/ tests cannot use clang. You need to use tools like llvm-lto2. See existing tests.

[SchrodingerZhu]

• address cr: code brace

[SchrodingerZhu]

• address cr: use IR instead

[SchrodingerZhu]

• move to proper place

[SchrodingerZhu]

• adjust comment

[MaskRay]

llvm/test/LTO/Resolution/X86/alias-indirect-function-lto.ll

2

Testing a command does not crash does not make good use of the test. Please check basic properties. And add a file-level comment about the purpose.

[SchrodingerZhu]

@MaskRay unfortunately and fortunately, extending the test case to

; RUN: opt -module-summary -o %t.bc %s
; RUN: llvm-lto2 run %t.bc -r %t.bc,foo,pl -r %t.bc,bar,pl -r %t.bc,baz,pl -o %t2
; RUN: llvm-nm %t2.1 | FileCheck %s
; CHECK: i foo
; CHECK: t foo_resolver
; CHECK: i bar
; CHECK: i baz

gives me another crash at LTO stage:

 #0 0x000056128a37edb9 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/schrodinger/Documents/llvm-project/llvm/cmake-build-minsizerel/bin/llvm-lto2+0x1bb4db9)
 #1 0x000056128a37ef6e SignalHandler(int) Signals.cpp:0:0
 #2 0x00007f0ba5506150 (/usr/lib/libc.so.6+0x42150)
 #3 0x000056128a6dcdd7 std::_Function_handler<bool (llvm::GlobalValue const&), llvm::thinLTOInternalizeModule(llvm::Module&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&)::$_4>::_M_invoke(std::_Any_data const&, llvm::GlobalValue const&) FunctionImport.cpp:0:0
 #4 0x000056128a7073fe llvm::InternalizePass::maybeInternalize(llvm::GlobalValue&, llvm::DenseMap<llvm::Comdat const*, llvm::InternalizePass::ComdatInfo, llvm::DenseMapInfo<llvm::Comdat const*, void>, llvm::detail::DenseMapPair<llvm::Comdat const*, llvm::InternalizePass::ComdatInfo>>&) (/home/schrodinger/Documents/llvm-project/llvm/cmake-build-minsizerel/bin/llvm-lto2+0x1f3d3fe)
 #5 0x000056128a707990 llvm::InternalizePass::internalizeModule(llvm::Module&, llvm::CallGraph*) (/home/schrodinger/Documents/llvm-project/llvm/cmake-build-minsizerel/bin/llvm-lto2+0x1f3d990)
 #6 0x000056128a6d9df0 llvm::thinLTOInternalizeModule(llvm::Module&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&) (/home/schrodinger/Documents/llvm-project/llvm/cmake-build-minsizerel/bin/llvm-lto2+0x1f0fdf0)
 #7 0x000056128a181dba llvm::lto::thinBackend(llvm::lto::Config const&, unsigned int, std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>, llvm::Module&, llvm::ModuleSummaryIndex const&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>*, std::vector<unsigned char, std::allocator<unsigned char>> const&) (/home/schrodinger/Documents/llvm-project/llvm/cmake-build-minsizerel/bin/llvm-lto2+0x19b7dba)
 #8 0x000056128a17d8b0 (anonymous namespace)::InProcessThinBackend::runThinLTOBackendThread(std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>, std::function<llvm::Expected<std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>> (unsigned int, llvm::StringRef)>, unsigned int, llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>)::operator()(std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>) const LTO.cpp:0:0
 #9 0x000056128a17d1fa std::_Function_handler<void (), std::_Bind<(anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) (llvm::BitcodeModule, std::reference_wrapper<llvm::ModuleSummaryIndex>, std::reference_wrapper<llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const>, std::reference_wrapper<llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const>, std::reference_wrapper<std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const>, std::reference_wrapper<llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const>, std::reference_wrapper<llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>>)>>::_M_invoke(std::_Any_data const&) LTO.cpp:0:0
#10 0x000056128a17c851 void std::__invoke_impl<void, llvm::ThreadPool::createTaskAndFuture(std::function<void ()>)::'lambda'()&>(std::__invoke_other, llvm::ThreadPool::createTaskAndFuture(std::function<void ()>)::'lambda'()&) (/home/schrodinger/Documents/llvm-project/llvm/cmake-build-minsizerel/bin/llvm-lto2+0x19b2851)
#11 0x000056128a33eed1 llvm::ThreadPool::processTasks(llvm::ThreadPoolTaskGroup*) (/home/schrodinger/Documents/llvm-project/llvm/cmake-build-minsizerel/bin/llvm-lto2+0x1b74ed1)

I am looking into it

[SchrodingerZhu]

• stage
• stage
• fix lto

[SchrodingerZhu]

• format

[SchrodingerZhu]

The LTO problem is fixed but thinlto is not fully resolved:

 /home/schrodinger/Documents/llvm-project/llvm/cmake-build-debug/bin/clang test.c -o test -flto=thin -sha
red -fuse-ld=lld
IFunc resolver must be a definition
ptr @f
LLVM ERROR: Broken module found, compilation aborted!
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
 #0 0x0000559adcf4c647 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/schrodinger/Documents/llvm-project/llvm/lib/Support/Unix/Signals.inc:569:11
 #1 0x0000559adcf4c85b PrintStackTraceSignalHandler(void*) /home/schrodinger/Documents/llvm-project/llvm/lib/Support/Unix/Signals.inc:636:1
 #2 0x0000559adcf4abf3 llvm::sys::RunSignalHandlers() /home/schrodinger/Documents/llvm-project/llvm/lib/Support/Signals.cpp:103:5
 #3 0x0000559adcf4d071 SignalHandler(int) /home/schrodinger/Documents/llvm-project/llvm/lib/Support/Unix/Signals.inc:0:3
 #4 0x00007f4a56705150 (/usr/lib/libc.so.6+0x42150)
 #5 0x00007f4a567606db pthread_kill (/usr/lib/libc.so.6+0x9d6db)
 #6 0x00007f4a567050a8 gsignal (/usr/lib/libc.so.6+0x420a8)
 #7 0x00007f4a566eb535 abort (/usr/lib/libc.so.6+0x28535)
 #8 0x0000559adce51e34 llvm::report_fatal_error(llvm::Twine const&, bool) /home/schrodinger/Documents/llvm-project/llvm/lib/Support/ErrorHandling.cpp:125:5
 #9 0x0000559adce51ca2 /home/schrodinger/Documents/llvm-project/llvm/lib/Support/ErrorHandling.cpp:83:3
#10 0x0000559ae2a64551 llvm::VerifierPass::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/schrodinger/Documents/llvm-project/llvm/lib/IR/Verifier.cpp:0:5
#11 0x0000559ae006e757 llvm::detail::PassModel<llvm::Module, llvm::VerifierPass, llvm::PreservedAnalyses, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/schrodinger/Documents/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:88:17
#12 0x0000559ae2a1111c llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/schrodinger/Documents/llvm-project/llvm/include/llvm/IR/PassManager.h:522:16
#13 0x0000559ae0062e9f runNewPMPasses(llvm::lto::Config const&, llvm::Module&, llvm::TargetMachine*, unsigned int, bool, llvm::ModuleSummaryIndex*, llvm::ModuleSummaryIndex const*) /home/schrodinger/Documents/llvm-project/llvm/lib/LTO/LTOBackend.cpp:309:7
#14 0x0000559ae00620f7 llvm::lto::opt(llvm::lto::Config const&, llvm::TargetMachine*, unsigned int, llvm::Module&, bool, llvm::ModuleSummaryIndex*, llvm::ModuleSummaryIndex const*, std::vector<unsigned char, std::allocator<unsigned char>> const&) /home/schrodinger/Documents/llvm-project/llvm/lib/LTO/LTOBackend.cpp:336:11
#15 0x0000559ae0064d1f llvm::lto::thinBackend(llvm::lto::Config const&, unsigned int, std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>, llvm::Module&, llvm::ModuleSummaryIndex const&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>*, std::vector<unsigned char, std::allocator<unsigned char>> const&)::$_6::operator()(llvm::Module&, llvm::TargetMachine*, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>) const /home/schrodinger/Documents/llvm-project/llvm/lib/LTO/LTOBackend.cpp:554:13
#16 0x0000559ae0064c2c llvm::lto::thinBackend(llvm::lto::Config const&, unsigned int, std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>, llvm::Module&, llvm::ModuleSummaryIndex const&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>*, std::vector<unsigned char, std::allocator<unsigned char>> const&) /home/schrodinger/Documents/llvm-project/llvm/lib/LTO/LTOBackend.cpp:630:3
#17 0x0000559ae0031752 (anonymous namespace)::InProcessThinBackend::runThinLTOBackendThread(std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>, std::function<llvm::Expected<std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>> (unsigned int, llvm::StringRef)>, unsigned int, llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>)::operator()(std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>) const /home/schrodinger/Documents/llvm-project/llvm/lib/LTO/LTO.cpp:1256:7
#18 0x0000559ae00312df (anonymous namespace)::InProcessThinBackend::runThinLTOBackendThread(std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>, std::function<llvm::Expected<std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream, std::default_delete<llvm::CachedFileStream>>> (unsigned int)>> (unsigned int, llvm::StringRef)>, unsigned int, llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) /home/schrodinger/Documents/llvm-project/llvm/lib/LTO/LTO.cpp:1272:7
#19 0x0000559ae0030e86 (anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::operator()(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) const /home/schrodinger/Documents/llvm-project/llvm/lib/LTO/LTO.cpp:1310:21
#20 0x0000559ae0030cb7 void std::__invoke_impl<void, (anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)&, llvm::BitcodeModule&, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&>(std::__invoke_other, (anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)&, llvm::BitcodeModule&, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.1.0/../../../../include/c++/12.1.0/bits/invoke.h:61:14
#21 0x0000559ae0030b79 std::__invoke_result<(anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)&, llvm::BitcodeModule&, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&>::type std::__invoke<(anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)&, llvm::BitcodeModule&, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&>((anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)&, llvm::BitcodeModule&, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.1.0/../../../../include/c++/12.1.0/bits/invoke.h:96:7
#22 0x0000559ae0030a92 void std::_Bind<(anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) (llvm::BitcodeModule, std::reference_wrapper<llvm::ModuleSummaryIndex>, std::reference_wrapper<llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const>, std::reference_wrapper<llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const>, std::reference_wrapper<std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const>, std::reference_wrapper<llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const>, std::reference_wrapper<llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>>)>::__call<void, 0ul, 1ul, 2ul, 3ul, 4ul, 5ul, 6ul>(std::tuple<>&&, std::_Index_tuple<0ul, 1ul, 2ul, 3ul, 4ul, 5ul, 6ul>) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.1.0/../../../../include/c++/12.1.0/functional:484:11
#23 0x0000559ae0030923 void std::_Bind<(anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) (llvm::BitcodeModule, std::reference_wrapper<llvm::ModuleSummaryIndex>, std::reference_wrapper<llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const>, std::reference_wrapper<llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const>, std::reference_wrapper<std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const>, std::reference_wrapper<llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const>, std::reference_wrapper<llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>>)>::operator()<void>() /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.1.0/../../../../include/c++/12.1.0/functional:567:17
#24 0x0000559ae00308cd void std::__invoke_impl<void, std::_Bind<(anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) (llvm::BitcodeModule, std::reference_wrapper<llvm::ModuleSummaryIndex>, std::reference_wrapper<llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const>, std::reference_wrapper<llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const>, std::reference_wrapper<std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const>, std::reference_wrapper<llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const>, std::reference_wrapper<llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>>)>&>(std::__invoke_other, std::_Bind<(anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) (llvm::BitcodeModule, std::reference_wrapper<llvm::ModuleSummaryIndex>, std::reference_wrapper<llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const>, std::reference_wrapper<llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const>, std::reference_wrapper<std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const>, std::reference_wrapper<llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const>, std::reference_wrapper<llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>>)>&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.1.0/../../../../include/c++/12.1.0/bits/invoke.h:61:7
#25 0x0000559ae003087d std::enable_if<__and_<std::is_void<void>, std::__is_invocable<std::_Bind<(anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) (llvm::BitcodeModule, std::reference_wrapper<llvm::ModuleSummaryIndex>, std::reference_wrapper<llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const>, std::reference_wrapper<llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const>, std::reference_wrapper<std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const>, std::reference_wrapper<llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const>, std::reference_wrapper<llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>>)>&>>::value, void>::type std::__invoke_r<void, std::_Bind<(anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) (llvm::BitcodeModule, std::reference_wrapper<llvm::ModuleSummaryIndex>, std::reference_wrapper<llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const>, std::reference_wrapper<llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const>, std::reference_wrapper<std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const>, std::reference_wrapper<llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const>, std::reference_wrapper<llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>>)>&>(std::_Bind<(anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) (llvm::BitcodeModule, std::reference_wrapper<llvm::ModuleSummaryIndex>, std::reference_wrapper<llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const>, std::reference_wrapper<llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const>, std::reference_wrapper<std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const>, std::reference_wrapper<llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const>, std::reference_wrapper<llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>>)>&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.1.0/../../../../include/c++/12.1.0/bits/invoke.h:156:5
#26 0x0000559ae003072d std::_Function_handler<void (), std::_Bind<(anonymous namespace)::InProcessThinBackend::start(unsigned int, llvm::BitcodeModule, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&)::'lambda'(llvm::BitcodeModule, llvm::ModuleSummaryIndex&, llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const&, llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const&, std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const&, llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const&, llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>&) (llvm::BitcodeModule, std::reference_wrapper<llvm::ModuleSummaryIndex>, std::reference_wrapper<llvm::StringMap<std::unordered_set<unsigned long, std::hash<unsigned long>, std::equal_to<unsigned long>, std::allocator<unsigned long>>, llvm::MallocAllocator> const>, std::reference_wrapper<llvm::DenseSet<llvm::ValueInfo, llvm::DenseMapInfo<llvm::ValueInfo, void>> const>, std::reference_wrapper<std::map<unsigned long, llvm::GlobalValue::LinkageTypes, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, llvm::GlobalValue::LinkageTypes>>> const>, std::reference_wrapper<llvm::DenseMap<unsigned long, llvm::GlobalValueSummary*, llvm::DenseMapInfo<unsigned long, void>, llvm::detail::DenseMapPair<unsigned long, llvm::GlobalValueSummary*>> const>, std::reference_wrapper<llvm::MapVector<llvm::StringRef, llvm::BitcodeModule, llvm::DenseMap<llvm::StringRef, unsigned int, llvm::DenseMapInfo<llvm::StringRef, void>, llvm::detail::DenseMapPair<llvm::StringRef, unsigned int>>, std::vector<std::pair<llvm::StringRef, llvm::BitcodeModule>, std::allocator<std::pair<llvm::StringRef, llvm::BitcodeModule>>>>>)>>::_M_invoke(std::_Any_data const&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.1.0/../../../../include/c++/12.1.0/bits/std_function.h:290:2
#27 0x0000559adcf55855 std::function<void ()>::operator()() const /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.1.0/../../../../include/c++/12.1.0/bits/std_function.h:591:2
#28 0x0000559add5bb0cd llvm::ThreadPool::createTaskAndFuture(std::function<void ()>)::'lambda'()::operator()() const /home/schrodinger/Documents/llvm-project/llvm/include/llvm/Support/ThreadPool.h:135:15
#29 0x0000559add5bb08d void std::__invoke_impl<void, llvm::ThreadPool::createTaskAndFuture(std::function<void ()>)::'lambda'()&>(std::__invoke_other, llvm::ThreadPool::createTaskAndFuture(std::function<void ()>)::'lambda'()&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.1.0/../../../../include/c++/12.1.0/bits/invoke.h:61:7
#30 0x0000559add5bb03d std::enable_if<__and_<std::is_void<void>, std::__is_invocable<llvm::ThreadPool::createTaskAndFuture(std::function<void ()>)::'lambda'()&>>::value, void>::type std::__invoke_r<void, llvm::ThreadPool::createTaskAndFuture(std::function<void ()>)::'lambda'()&>(llvm::ThreadPool::createTaskAndFuture(std::function<void ()>)::'lambda'()&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.1.0/../../../../include/c++/12.1.0/bits/invoke.h:156:5
#31 0x0000559add5baeed std::_Function_handler<void (), llvm::ThreadPool::createTaskAndFuture(std::function<void ()>)::'lambda'()>::_M_invoke(std::_Any_data const&) /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.1.0/../../../../include/c++/12.1.0/bits/std_function.h:290:2
#32 0x0000559adcf55855 std::function<void ()>::operator()() const /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/12.1.0/../../../../include/c++/12.1.0/bits/std_function.h:591:2
#33 0x0000559add5d3cfa llvm::ThreadPool::processTasks(llvm::ThreadPoolTaskGroup*) /home/schrodinger/Documents/llvm-project/llvm/lib/Support/ThreadPool.cpp:99:5
#34 0x0000559add5d4f33 llvm::ThreadPool::grow(int)::$_0::operator()() const /home/schrodinger/Documents/llvm-project/llvm/lib/Support/ThreadPool.cpp:48:5
#35 0x0000559add5d4ec5 void llvm::thread::Apply<llvm::ThreadPool::grow(int)::$_0>(std::tuple<llvm::ThreadPool::grow(int)::$_0>&, std::integer_sequence<unsigned long>) /home/schrodinger/Documents/llvm-project/llvm/include/llvm/Support/thread.h:43:3
#36 0x0000559add5d4e74 void llvm::thread::GenericThreadProxy<std::tuple<llvm::ThreadPool::grow(int)::$_0>>(void*) /home/schrodinger/Documents/llvm-project/llvm/include/llvm/Support/thread.h:50:5
#37 0x0000559add5d4b65 void* llvm::thread::ThreadProxy<std::tuple<llvm::ThreadPool::grow(int)::$_0>>(void*) /home/schrodinger/Documents/llvm-project/llvm/include/llvm/Support/thread.h:61:5
#38 0x00007f4a5675e721 (/usr/lib/libc.so.6+0x9b721)
#39 0x00007f4a567f3164 __clone (/usr/lib/libc.so.6+0x130164)
clang-15: error: unable to execute command: Aborted (core dumped)
clang-15: error: linker command failed due to signal (use -v to see invocation)

[SchrodingerZhu]

fix liveness of resolvers

[SchrodingerZhu]

fix more

[SchrodingerZhu]

fix typo

[SchrodingerZhu]

enlarge test and fix accordingly

[SchrodingerZhu]

fix test arg

[SchrodingerZhu]

fix test arg

[SchrodingerZhu]

This comment was removed by SchrodingerZhu.

[SchrodingerZhu]

more clean ups for ifunc logic

[SchrodingerZhu]

typo

[SchrodingerZhu]

@MaskRay PTAL

[MaskRay]

I feel obliged to point out that the sheer number of updates is too large. Every update triggers an email to all reviewers and subscribers, so please be mindful. Personally I don't mind how many updates I receive, but others may do.
It's usually not too bad to have too many reviewers (having too few reviewers can be more of a problem at times).
I don't know how you added reviewers or whether you got upset after I clicked "Request Changes".
Note: if the number of iterations suggests that there is something inherently tricky, you likely should improve your commit message (Differential summary) to mention the subtle points.

https://llvm.org/docs/CodeReview.html#lgtm-how-a-patch-is-accepted "Please also be mindful of weekends and major holidays."
July 4 is a federal holiday in the United States, so many folks may not be responsive during the long weekend.
(For my case I just finished my trip mode.)

I haven't taken a second deep look at this patch but the applyAlongResolverPath change looks too intrusive to me. One previous version seems more favorable to me.

[SchrodingerZhu]

First of all, I am really sorry about the noise and the misbehavior here. I have to admit that some of the changes here are because I am still in the way of getting familiar with the patch system. I apologize for being careless in the progress.

I don't know how you added reviewers or whether you got upset after I clicked "Request Changes".

I am very glad to recieve any review from you and any other member from the team! It is just that I saw you push some commits to the monorepo recently, so I thought that you were too busy to review the patch. Again, I am sorry for the confusion.

I haven't taken a second deep look at this patch but the applyAlongResolverPath change looks too intrusive to me. One previous version seems more favorable to me.

Back to the patch itself, I made the changes because in the previous version, I assumed that, along the de-aliasing path to the resolver object, the immediate instance of Constant* need to be GlobalObject or GlobalAlias; but the resolver is stored as a Constant *, behind which, according to the implementation of findBaseObject, can also be instantiated as Expr.

I am looking forward to your suggestions, on the code and on how to follow the community conventions better!

[MaskRay]

OK, I think the approach is fine.

llvm/include/llvm/IR/GlobalIFunc.h

97

Delete Method to

99

expr -> ConstantExpr

103

Use function_ref instead.

llvm/lib/Analysis/ModuleSummaryAnalysis.cpp

652

Delete the blank line and move the comment above GlobalObject *Aliasee = A.getAliaseeObject(); (expand autos which may hinder readability).

821

I.applyAlongResolverPath([&Index](const GlobalValue *GV) { ... })

llvm/lib/Bitcode/Writer/BitcodeWriter.cpp

4106

// Skip ifunc and nameless functions which don't have an entry in the summary

llvm/lib/IR/Globals.cpp

360

Change ... to const GlobalValue *

553

Change ... to const GlobalValue *

590

Use function_ref instead.

llvm/lib/Transforms/IPO/FunctionImport.cpp

1155

s/dyn_cast/cast if known to be of the type.

cast<GlobalAlias>(&GV).getAliaseeObject()

llvm/lib/Transforms/Utils/FunctionImportUtils.cpp

39

llvm/test/LTO/Resolution/X86/alias-indirect-function-lto.ll

1

llvm/test/ThinLTO/X86/alias-ifunc is better.

I'll remove -lto from the filename since it conveys no additional information.

Additionally test llvm-dis < %t.bc

Test something like

^1 = gv: (name: "quux", summaries: (alias: (module: ^0, flags: (linkage: internal, visibility: default, notEligibleToImport: 0, live: 1, dsoLocal: 1, canAutoHide: 0), aliasee: ^6)))
^2 = ...   # have the line to test that there is no summary
^3 = ...
^6 = gv: (name: "foo_resolver", summaries: (function: (module: ^0, flags: (linkage: internal, visibility: default, notEligibleToImport: 0, live: 1, dsoLocal: 1, canAutoHide: 0), insts: 1)))

31

Delete

[MaskRay]

llvm/test/LTO/Resolution/X86/alias-indirect-function-lto.ll

15

Replace all these xxx* to ptr (opaque pointers). See recent clang's codegen.

[SchrodingerZhu]

This commit addresses problems mentioned in code reviews:

• Fix format and wording for comments
• Add more checks with llvm-dis
• Adjust code styles for function references, and auto inference.

[MaskRay]

As https://github.com/llvm/llvm-project/issues/56290 indicates, when an ifunc is aliased in LTO, clang will attempt to create an alias summary; however, as ifunc is not included in the module summary, doing so will lead to problems.

Fixes https://github.com/llvm/llvm-project/issues/56290

Don't repeat the link. You can use :

Fixes https://github.com/llvm/llvm-project/issues/56290: when an ifunc ...

llvm/include/llvm/IR/GlobalIFunc.h

102

Prefer const GlobalValue & if not-nullable.

llvm/test/ThinLTO/X86/alias-ifunc.ll

22 ↗

(On Diff #443503)

For the same check prefix, align the content.

; CHECK-RESOLVER:      (name: "foo_resolver"
; CHECK-RESOLVER-SAME: live: 1

[SchrodingerZhu]

This commit addresses issues mentioned in code reviews:

• change applyAlongResolverPath to use reference since the pointer is supposed to be non-null.
• update test format to align check rules under the same prefix.

[SchrodingerZhu]

Hi, is there anything else I should do for this patch？

[MaskRay]

In D129009#3665664, @SchrodingerZhu wrote:

Hi, is there anything else I should do for this patch？

There is no. I was waiting a bit to collect more response. I'll do some testing and push this. Thanks for your contribution.

[MaskRay]

Add blank lines
remove trailing whitespace

llvm/include/llvm/IR/GlobalIFunc.h

static bool isValidLinkage(LinkageTypes L) {
     return isExternalLinkage(L) || isLocalLinkage(L) || isWeakLinkage(L) ||
            isLinkOnceLinkage(L);
   }
 
   // Methods for support type inquiry through isa, cast, and dyn_cast:
   static bool classof(const Value *V) {
     return V->getValueID() == Value::GlobalIFuncVal;
   }
+
+  /// Method to apply specific operation to all resolver-related values.
+  /// If resolver target is already a global object, then apply the operation to
+  /// it directly. If target is an expr or an alias, evaluate it to its base
+  /// object and apply the operation for the base object and all aliases along
+  /// the path.
+  void applyAlongResolverPath(
+      const std::function<void(const GlobalValue *)> &Op) const;
 };
 
 template <>
 struct OperandTraits<GlobalIFunc>
     : public FixedNumOperandTraits<GlobalIFunc, 1> {};
 
 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GlobalIFunc, Constant)
 
 } // end namespace llvm
 
 #endif // LLVM_IR_GLOBALIFUNC_H

llvm/lib/Analysis/ModuleSummaryAnalysis.cpp

if (NonRenamableLocal)
     CantBePromoted.insert(V.getGUID());
   if (HasBlockAddress)
     GVarSummary->setNotEligibleToImport();
   if (!VTableFuncs.empty())
     GVarSummary->setVTableFuncs(VTableFuncs);
   Index.addGlobalValueSummary(V, std::move(GVarSummary));
 }
 
-static void
-computeAliasSummary(ModuleSummaryIndex &Index, const GlobalAlias &A,
+static void computeAliasSummary(ModuleSummaryIndex &Index, const GlobalAlias &A,
                                 DenseSet<GlobalValue::GUID> &CantBePromoted) {
+  auto *Aliasee = A.getAliaseeObject();
+
+  // Skip summary for indirect function aliases as summary for aliasee will not
+  // be emitted.
+  if (isa<GlobalIFunc>(Aliasee))
+    return;
+
   bool NonRenamableLocal = isNonRenamableLocal(A);
   GlobalValueSummary::GVFlags Flags(
       A.getLinkage(), A.getVisibility(), NonRenamableLocal,
       /* Live = */ false, A.isDSOLocal(), A.canBeOmittedFromSymbolTable());
   auto AS = std::make_unique<AliasSummary>(Flags);
-  auto *Aliasee = A.getAliaseeObject();
   auto AliaseeVI = Index.getValueInfo(Aliasee->getGUID());
   assert(AliaseeVI && "Alias expects aliasee summary to be available");
   assert(AliaseeVI.getSummaryList().size() == 1 &&
          "Expected a single entry per aliasee in per-module index");
   AS->setAliasee(AliaseeVI, AliaseeVI.getSummaryList()[0].get());
   if (NonRenamableLocal)
     CantBePromoted.insert(A.getGUID());
   Index.addGlobalValueSummary(A, std::move(AS));
 }
 
 // Set LiveRoot flag on entries matching the given value name.
 static void setLiveRoot(ModuleSummaryIndex &Index, StringRef Name) {
   if (ValueInfo VI = Index.getValueInfo(GlobalValue::getGUID(Name)))
     for (auto &Summary : VI.getSummaryList())
       Summary->setLive(true);
 }
 
 ModuleSummaryIndex llvm::buildModuleSummaryIndex(
for (const GlobalVariable &G : M.globals()) {
     computeVariableSummary(Index, G, CantBePromoted, M, Types);
   }
 
   // Compute summaries for all aliases defined in module, and save in the
   // index.
   for (const GlobalAlias &A : M.aliases())
     computeAliasSummary(Index, A, CantBePromoted);
 
+  // Iterate through ifuncs, set their resolvers all alive.
+  for (const GlobalIFunc &I : M.ifuncs()) {
+    std::function<void(const GlobalValue *)> Setter =
+        [&Index](const GlobalValue *GV) {
+          Index.getGlobalValueSummary(*GV)->setLive(true);
+        };
+    I.applyAlongResolverPath(Setter);
+  }
+
   for (auto *V : LocalsUsed) {
     auto *Summary = Index.getGlobalValueSummary(*V);
     assert(Summary && "Missing summary for global value");
     Summary->setNotEligibleToImport();
   }
 
   // The linker doesn't know about these LLVM produced values, so we need
   // to flag them as live in the index to ensure index-based dead value

llvm/lib/Bitcode/Writer/BitcodeWriter.cpp

void ModuleBitcodeWriterBase::writePerModuleGlobalValueSummary() {
   // Capture references from GlobalVariable initializers, which are outside
   // of a function scope.
   for (const GlobalVariable &G : M.globals())
     writeModuleLevelReferences(G, NameVals, FSModRefsAbbrev,
                                FSModVTableRefsAbbrev);
 
   for (const GlobalAlias &A : M.aliases()) {
     auto *Aliasee = A.getAliaseeObject();
-    if (!Aliasee->hasName())
-      // Nameless function don't have an entry in the summary, skip it.
+    // IFunc function and Nameless function don't have an entry in the
+    // summary, skip it.
+    if (!Aliasee->hasName() || isa<GlobalIFunc>(Aliasee))
       continue;
     auto AliasId = VE.getValueID(&A);
     auto AliaseeId = VE.getValueID(Aliasee);
     NameVals.push_back(AliasId);
     auto *Summary = Index->getGlobalValueSummary(A);
     AliasSummary *AS = cast<AliasSummary>(Summary);
     NameVals.push_back(getEncodedGVSummaryFlags(AS->flags()));
     NameVals.push_back(AliaseeId);

llvm/lib/IR/Globals.cpp

bool GlobalObject::canIncreaseAlignment() const {
   bool isELF =
       (!Parent || Triple(Parent->getTargetTriple()).isOSBinFormatELF());
   if (isELF && !isDSOLocal())
     return false;
 
   return true;
 }
 
+template <typename Operation>
 static const GlobalObject *
-findBaseObject(const Constant *C, DenseSet<const GlobalAlias *> &Aliases) {
-  if (auto *GO = dyn_cast<GlobalObject>(C))
+findBaseObject(const Constant *C, DenseSet<const GlobalAlias *> &Aliases,
+               const Operation &Op) {
+  if (auto *GO = dyn_cast<GlobalObject>(C)) {
+    Op(GO);
     return GO;
-  if (auto *GA = dyn_cast<GlobalAlias>(C))
+  }
+  if (auto *GA = dyn_cast<GlobalAlias>(C)) {
+    Op(GA);
     if (Aliases.insert(GA).second)
-      return findBaseObject(GA->getOperand(0), Aliases);
+      return findBaseObject(GA->getOperand(0), Aliases, Op);
+  }
   if (auto *CE = dyn_cast<ConstantExpr>(C)) {
     switch (CE->getOpcode()) {
     case Instruction::Add: {
-      auto *LHS = findBaseObject(CE->getOperand(0), Aliases);
-      auto *RHS = findBaseObject(CE->getOperand(1), Aliases);
+      auto *LHS = findBaseObject(CE->getOperand(0), Aliases, Op);
+      auto *RHS = findBaseObject(CE->getOperand(1), Aliases, Op);
       if (LHS && RHS)
         return nullptr;
       return LHS ? LHS : RHS;
     }
     case Instruction::Sub: {
-      if (findBaseObject(CE->getOperand(1), Aliases))
+      if (findBaseObject(CE->getOperand(1), Aliases, Op))
         return nullptr;
-      return findBaseObject(CE->getOperand(0), Aliases);
+      return findBaseObject(CE->getOperand(0), Aliases, Op);
     }
     case Instruction::IntToPtr:
     case Instruction::PtrToInt:
     case Instruction::BitCast:
     case Instruction::GetElementPtr:
-      return findBaseObject(CE->getOperand(0), Aliases);
+      return findBaseObject(CE->getOperand(0), Aliases, Op);
     default:
       break;
     }
   }
   return nullptr;
 }
 
 const GlobalObject *GlobalValue::getAliaseeObject() const {
   DenseSet<const GlobalAlias *> Aliases;
-  return findBaseObject(this, Aliases);
+  return findBaseObject(this, Aliases, [](...) {});
 }
 
 bool GlobalValue::isAbsoluteSymbolRef() const {
   auto *GO = dyn_cast<GlobalObject>(this);
   if (!GO)
     return false;
 
   return GO->getMetadata(LLVMContext::MD_absolute_symbol);

 void GlobalAlias::setAliasee(Constant *Aliasee) {
   assert((!Aliasee || Aliasee->getType() == getType()) &&
          "Alias and aliasee types should match!");
   Op<0>().set(Aliasee);
 }
 
 const GlobalObject *GlobalAlias::getAliaseeObject() const {
   DenseSet<const GlobalAlias *> Aliases;
-  return findBaseObject(getOperand(0), Aliases);
+  return findBaseObject(getOperand(0), Aliases, [](...) {});
 }
 
 //===----------------------------------------------------------------------===//
 // GlobalIFunc Implementation
 //===----------------------------------------------------------------------===//
 
 GlobalIFunc::GlobalIFunc(Type *Ty, unsigned AddressSpace, LinkageTypes Link,
                          const Twine &Name, Constant *Resolver,

 }
 
 void GlobalIFunc::eraseFromParent() {
   getParent()->getIFuncList().erase(getIterator());
 }
 
 const Function *GlobalIFunc::getResolverFunction() const {
   DenseSet<const GlobalAlias *> Aliases;
-  return dyn_cast<Function>(findBaseObject(getResolver(), Aliases));
+  return dyn_cast<Function>(findBaseObject(getResolver(), Aliases, [](...) {}));
+}
+
+void GlobalIFunc::applyAlongResolverPath(
+    const std::function<void(const GlobalValue *)> &Op) const {
+  DenseSet<const GlobalAlias *> Aliases;
+  findBaseObject(getResolver(), Aliases, Op);
 }

llvm/lib/Transforms/IPO/FunctionImport.cpp

 }
 
 /// Run internalization on \p TheModule based on symmary analysis.
 void llvm::thinLTOInternalizeModule(Module &TheModule,
                                     const GVSummaryMapTy &DefinedGlobals) {
   // Declare a callback for the internalize pass that will ask for every
   // candidate GlobalValue if it can be internalized or not.
   auto MustPreserveGV = [&](const GlobalValue &GV) -> bool {
+    // It maybe the case that GV is on a chain of an ifunc, its alias and
+    // subsequent aliases. In this case, the summary for the value is not
+    // available.
+    if (isa<GlobalIFunc>(&GV) ||
+        (isa<GlobalAlias>(&GV) &&
+         isa<GlobalIFunc>(dyn_cast<GlobalAlias>(&GV)->getAliaseeObject())))
+      return true;
+
     // Lookup the linkage recorded in the summaries during global analysis.
     auto GS = DefinedGlobals.find(GV.getGUID());
     if (GS == DefinedGlobals.end()) {
       // Must have been promoted (possibly conservatively). Find original
       // name so that we can access the correct summary and see if it can
       // be internalized again.
       // FIXME: Eventually we should control promotion instead of promoting
       // and internalizing again.
for (GlobalVariable &GV : SrcModule->globals()) {
                         << SrcModule->getSourceFileName() << "\n");
       if (Import) {
         if (Error Err = GV.materialize())
           return std::move(Err);
         ImportedGVCount += GlobalsToImport.insert(&GV);
       }
     }
     for (GlobalAlias &GA : SrcModule->aliases()) {
-      if (!GA.hasName())
+      if (!GA.hasName() || isa<GlobalIFunc>(GA.getAliaseeObject()))
         continue;
       auto GUID = GA.getGUID();
       auto Import = ImportGUIDs.count(GUID);
       LLVM_DEBUG(dbgs() << (Import ? "Is" : "Not") << " importing alias "
                         << GUID << " " << GA.getName() << " from "
                         << SrcModule->getSourceFileName() << "\n");
       if (Import) {
         if (Error Err = GA.materialize())

llvm/lib/Transforms/Utils/FunctionImportUtils.cpp

bool FunctionImportGlobalProcessing::doImportAsDefinition(
 
   // Otherwise yes.
   return true;
 }
 
 bool FunctionImportGlobalProcessing::shouldPromoteLocalToGlobal(
     const GlobalValue *SGV, ValueInfo VI) {
   assert(SGV->hasLocalLinkage());
+
+  // ifuncs and ifunc aliasee does not have summary
+  if (isa<GlobalIFunc>(SGV) ||
+      (isa<GlobalAlias>(SGV) &&
+       isa<GlobalIFunc>(cast<GlobalAlias>(SGV)->getAliaseeObject())))
+    return false;
+
   // Both the imported references and the original local variable must
   // be promoted.
   if (!isPerformingImport() && !isModuleExporting())
     return false;
 
   if (isPerformingImport()) {
     assert((!GlobalsToImport->count(const_cast<GlobalValue *>(SGV)) ||
             !isNonRenamableLocal(*SGV)) &&

llvm/test/LTO/Resolution/X86/alias-indirect-function-lto.ll

+; RUN: opt -module-summary -o %t.bc %s
+; RUN: llvm-lto2 run %t.bc -r %t.bc,foo,px -r %t.bc,bar,px -r %t.bc,baz,px -r %t.bc,qux,px -r %t.bc,grault,px -o %t2
+; RUN: llvm-nm %t2.1 | FileCheck %s
+; CHECK: i bar
+; CHECK: i baz
+; CHECK: i foo
+; CHECK: t foo_resolver
+; CHECK: i grault
+; CHECK: i quuz
+; CHECK: i qux
+
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@foo = ifunc i32 (i32), i32 (i32)* ()* @foo_resolver
+
+define internal i32 (i32)* @foo_resolver() {
+entry:
+  ret i32 (i32)* null
+}
+
+@bar = alias i32 (i32), i32 (i32)* @foo
+@baz = weak alias i32 (i32), i32 (i32)* @foo
+@qux = alias i32 (i32), i32 (i32)* @bar
+
+@quux = internal alias i32 (i32)* (), i32 (i32)* ()* @foo_resolver
+@quuz = internal ifunc i32 (i32), i32 (i32)* ()* @quux
+@corge = internal alias i32 (i32), i32 (i32)* @quuz
+@grault = alias i32 (i32), i32 (i32)* @corge
+
+; no crash