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Clang-19 fatal error: error in backend: Cannot select: intrinsic %llvm.preserve.struct.access.index when using builtin_preserve_access_index() #92336

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iamanonymouscs opened this issue May 16, 2024 · 1 comment
Open

Clang-19 fatal error: error in backend: Cannot select: intrinsic %llvm.preserve.struct.access.index when using builtin_preserve_access_index() #92336

iamanonymouscs opened this issue May 16, 2024 · 1 comment
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backend:X86 crash Prefer [crash-on-valid] or [crash-on-invalid]

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@iamanonymouscs
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Clang-19 crashed when using builtin_preserve_access_index() with -g

Compiler explorer: https://godbolt.org/z/csM7Gqbar

$cat mutant.c
struct {
  int a;
} b;
int c() { return __builtin_preserve_access_index(b.a); }

$clang-19 -g -c mutant.c
fatal error: error in backend: Cannot select: intrinsic %llvm.preserve.struct.access.index
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.      Program arguments: clang-19 -g mutant.c -c
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module 'mutant.c'.
4.      Running pass 'X86 DAG->DAG Instruction Selection' on function '@c'
 #0 0x00007f6883b24216 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xdc1216)
 #1 0x00007f6883b21ec0 llvm::sys::RunSignalHandlers() (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xdbeec0)
 #2 0x00007f6883b235f4 llvm::sys::CleanupOnSignal(unsigned long) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xdc05f4)
 #3 0x00007f6883a7123e (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xd0e23e)
 #4 0x00007f6883a711fb (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xd0e1fb)
 #5 0x00007f6883b1e707 llvm::sys::Process::Exit(int, bool) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xdbb707)
 #6 0x00005617f30c93c3 (/usr/lib/llvm-19/bin/clang+0x133c3)
 #7 0x00007f6883a7ed0f llvm::report_fatal_error(llvm::Twine const&, bool) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xd1bd0f)
 #8 0x00007f6884394fa0 llvm::SelectionDAGISel::isOrEquivalentToAdd(llvm::SDNode const*) const (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x1631fa0)
 #9 0x00007f6884394498 llvm::SelectionDAGISel::SelectCodeCommon(llvm::SDNode*, unsigned char const*, unsigned int) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x1631498)
#10 0x00007f68868a67b5 (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x3b437b5)
#11 0x00007f688438bcaf llvm::SelectionDAGISel::DoInstructionSelection() (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x1628caf)
#12 0x00007f688438b391 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x1628391)
#13 0x00007f688438a5fe llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x16275fe)
#14 0x00007f68843885ee llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x16255ee)
#15 0x00007f688689c2af (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x3b392af)
#16 0x00007f6883ef3fb7 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x1190fb7)
#17 0x00007f6883c73e1f llvm::FPPassManager::runOnFunction(llvm::Function&) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xf10e1f)
#18 0x00007f6883c797c3 llvm::FPPassManager::runOnModule(llvm::Module&) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xf167c3)
#19 0x00007f6883c74534 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xf11534)
#20 0x00007f688c11ad60 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x1c5ed60)
#21 0x00007f688c4af0c9 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x1ff30c9)
#22 0x00007f688b06c076 clang::ParseAST(clang::Sema&, bool, bool) (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0xbb0076)
#23 0x00007f688cf69825 clang::FrontendAction::Execute() (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x2aad825)
#24 0x00007f688cee50d4 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x2a290d4)
#25 0x00007f688cfe2f7e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x2b26f7e)
#26 0x00005617f30c8fad cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/lib/llvm-19/bin/clang+0x12fad)
#27 0x00005617f30c6075 (/usr/lib/llvm-19/bin/clang+0x10075)
#28 0x00007f688cb75439 (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x26b9439)
#29 0x00007f6883a711dc llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xd0e1dc)
#30 0x00007f688cb74dfe clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x26b8dfe)
#31 0x00007f688cb3c901 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x2680901)
#32 0x00007f688cb3cb4e clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x2680b4e)
#33 0x00007f688cb596cc clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x269d6cc)
#34 0x00005617f30c59e5 clang_main(int, char**, llvm::ToolContext const&) (/usr/lib/llvm-19/bin/clang+0xf9e5)
#35 0x00005617f30d3556 main (/usr/lib/llvm-19/bin/clang+0x1d556)
#36 0x00007f6881f5dc87 __libc_start_main /build/glibc-CVJwZb/glibc-2.27/csu/../csu/libc-start.c:344:0
#37 0x00005617f30c2bfa _start (/usr/lib/llvm-19/bin/clang+0xcbfa)
clang-19: error: clang frontend command failed with exit code 70 (use -v to see invocation)
Ubuntu clang version 19.0.0 (++20240301064251+dd426fa5f931-1~exp1~20240301184412.1845)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/lib/llvm-19/bin
clang-19: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-19: note: diagnostic msg: /tmp/mutant-ed2bff.c
clang-19: note: diagnostic msg: /tmp/mutant-ed2bff.sh
clang-19: note: diagnostic msg: 

********************
@EugeneZelenko EugeneZelenko added backend:X86 crash Prefer [crash-on-valid] or [crash-on-invalid] and removed new issue labels May 16, 2024
@llvmbot
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llvmbot commented May 16, 2024

@llvm/issue-subscribers-backend-x86

Author: Anonymous (iamanonymouscs)

Clang-19 crashed when using builtin_preserve_access_index() with -g

Compiler explorer: https://godbolt.org/z/csM7Gqbar

$cat mutant.c
struct {
  int a;
} b;
int c() { return __builtin_preserve_access_index(b.a); }

$clang-19 -g -c mutant.c
fatal error: error in backend: Cannot select: intrinsic %llvm.preserve.struct.access.index
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.      Program arguments: clang-19 -g mutant.c -c
1.      &lt;eof&gt; parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module 'mutant.c'.
4.      Running pass 'X86 DAG-&gt;DAG Instruction Selection' on function '@<!-- -->c'
 #<!-- -->0 0x00007f6883b24216 llvm::sys::PrintStackTrace(llvm::raw_ostream&amp;, int) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xdc1216)
 #<!-- -->1 0x00007f6883b21ec0 llvm::sys::RunSignalHandlers() (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xdbeec0)
 #<!-- -->2 0x00007f6883b235f4 llvm::sys::CleanupOnSignal(unsigned long) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xdc05f4)
 #<!-- -->3 0x00007f6883a7123e (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xd0e23e)
 #<!-- -->4 0x00007f6883a711fb (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xd0e1fb)
 #<!-- -->5 0x00007f6883b1e707 llvm::sys::Process::Exit(int, bool) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xdbb707)
 #<!-- -->6 0x00005617f30c93c3 (/usr/lib/llvm-19/bin/clang+0x133c3)
 #<!-- -->7 0x00007f6883a7ed0f llvm::report_fatal_error(llvm::Twine const&amp;, bool) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xd1bd0f)
 #<!-- -->8 0x00007f6884394fa0 llvm::SelectionDAGISel::isOrEquivalentToAdd(llvm::SDNode const*) const (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x1631fa0)
 #<!-- -->9 0x00007f6884394498 llvm::SelectionDAGISel::SelectCodeCommon(llvm::SDNode*, unsigned char const*, unsigned int) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x1631498)
#<!-- -->10 0x00007f68868a67b5 (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x3b437b5)
#<!-- -->11 0x00007f688438bcaf llvm::SelectionDAGISel::DoInstructionSelection() (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x1628caf)
#<!-- -->12 0x00007f688438b391 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x1628391)
#<!-- -->13 0x00007f688438a5fe llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&amp;) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x16275fe)
#<!-- -->14 0x00007f68843885ee llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&amp;) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x16255ee)
#<!-- -->15 0x00007f688689c2af (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x3b392af)
#<!-- -->16 0x00007f6883ef3fb7 llvm::MachineFunctionPass::runOnFunction(llvm::Function&amp;) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0x1190fb7)
#<!-- -->17 0x00007f6883c73e1f llvm::FPPassManager::runOnFunction(llvm::Function&amp;) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xf10e1f)
#<!-- -->18 0x00007f6883c797c3 llvm::FPPassManager::runOnModule(llvm::Module&amp;) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xf167c3)
#<!-- -->19 0x00007f6883c74534 llvm::legacy::PassManagerImpl::run(llvm::Module&amp;) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xf11534)
#<!-- -->20 0x00007f688c11ad60 clang::EmitBackendOutput(clang::DiagnosticsEngine&amp;, clang::HeaderSearchOptions const&amp;, clang::CodeGenOptions const&amp;, clang::TargetOptions const&amp;, clang::LangOptions const&amp;, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr&lt;llvm::vfs::FileSystem&gt;, std::unique_ptr&lt;llvm::raw_pwrite_stream, std::default_delete&lt;llvm::raw_pwrite_stream&gt;&gt;, clang::BackendConsumer*) (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x1c5ed60)
#<!-- -->21 0x00007f688c4af0c9 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&amp;) (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x1ff30c9)
#<!-- -->22 0x00007f688b06c076 clang::ParseAST(clang::Sema&amp;, bool, bool) (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0xbb0076)
#<!-- -->23 0x00007f688cf69825 clang::FrontendAction::Execute() (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x2aad825)
#<!-- -->24 0x00007f688cee50d4 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&amp;) (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x2a290d4)
#<!-- -->25 0x00007f688cfe2f7e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x2b26f7e)
#<!-- -->26 0x00005617f30c8fad cc1_main(llvm::ArrayRef&lt;char const*&gt;, char const*, void*) (/usr/lib/llvm-19/bin/clang+0x12fad)
#<!-- -->27 0x00005617f30c6075 (/usr/lib/llvm-19/bin/clang+0x10075)
#<!-- -->28 0x00007f688cb75439 (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x26b9439)
#<!-- -->29 0x00007f6883a711dc llvm::CrashRecoveryContext::RunSafely(llvm::function_ref&lt;void ()&gt;) (/usr/lib/llvm-19/bin/../lib/libLLVM.so.19.0+0xd0e1dc)
#<!-- -->30 0x00007f688cb74dfe clang::driver::CC1Command::Execute(llvm::ArrayRef&lt;std::optional&lt;llvm::StringRef&gt;&gt;, std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt;&gt;*, bool*) const (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x26b8dfe)
#<!-- -->31 0x00007f688cb3c901 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&amp;, clang::driver::Command const*&amp;, bool) const (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x2680901)
#<!-- -->32 0x00007f688cb3cb4e clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&amp;, llvm::SmallVectorImpl&lt;std::pair&lt;int, clang::driver::Command const*&gt;&gt;&amp;, bool) const (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x2680b4e)
#<!-- -->33 0x00007f688cb596cc clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&amp;, llvm::SmallVectorImpl&lt;std::pair&lt;int, clang::driver::Command const*&gt;&gt;&amp;) (/usr/lib/llvm-19/bin/../lib/libclang-cpp.so.19.0+0x269d6cc)
#<!-- -->34 0x00005617f30c59e5 clang_main(int, char**, llvm::ToolContext const&amp;) (/usr/lib/llvm-19/bin/clang+0xf9e5)
#<!-- -->35 0x00005617f30d3556 main (/usr/lib/llvm-19/bin/clang+0x1d556)
#<!-- -->36 0x00007f6881f5dc87 __libc_start_main /build/glibc-CVJwZb/glibc-2.27/csu/../csu/libc-start.c:344:0
#<!-- -->37 0x00005617f30c2bfa _start (/usr/lib/llvm-19/bin/clang+0xcbfa)
clang-19: error: clang frontend command failed with exit code 70 (use -v to see invocation)
Ubuntu clang version 19.0.0 (++20240301064251+dd426fa5f931-1~exp1~20240301184412.1845)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/lib/llvm-19/bin
clang-19: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-19: note: diagnostic msg: /tmp/mutant-ed2bff.c
clang-19: note: diagnostic msg: /tmp/mutant-ed2bff.sh
clang-19: note: diagnostic msg: 

********************

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@EugeneZelenko @iamanonymouscs @llvmbot