[Bug]: Clang crashes with NDK 25c when optimizing for size (-Os) in Release build

[tvballhaus]

Description

Prerequisite:

• NDK 25.2.9519653
• CMAKE_BUILD_TYPE Release
• CMAKE_CXX_FLAGS -Os

Action:

Compile the following code for arm64-v8a:

struct Foo
{
	size_t mLength;
	void Update(const short* arg0, double* arg1);
};

void Foo::Update(const short* arg0, double* arg1)
{
	std::transform(arg0, arg0 + mLength, arg1, [](auto p){ return static_cast<double>(p); });
}

Output:

Clang crashes: clang++: error: clang frontend command failed due to signal (use -v to see invocation)
See the full output in the attachment: ANC824.zip

Workarounds:

• Using NDK 25.1.8937393
• Using -O3 instead of -Os
• Adding attribute [[clang::optnone]] to the problematic methods.

Upstream bug

No response

Commit to cherry-pick

No response

Affected versions

r25

Canary version

No response

Host OS

Windows

Host OS version

Windows 10

Affected ABIs

arm64-v8a

[DanAlbert]

Possible duplicate of #1862 (I haven't looked closely so leaving both open, but the circumstances are similar).

Thanks for the minimized repro case 👍 Also interesting that this crashes in r25c but not in r25b... There weren't many changes in r25c so that makes the list of culprits quite small.

[DanAlbert]

@appujee probably a dup of #1862?

[appujee]

yes it is the same bug

0.	Program arguments: /usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real -Os -g -fPIC /usr/local//g/bugs/r25c-vector/transform.cpp -std=c++14 --target=aarch64-linux-android31 -c --sysroot /usr/local//llvm-toolchain/toolchain/prebuilts/ndk/r25/toolchains/llvm/prebuilt/linux-x86_64/sysroot -fvectorize -I /usr/local//llvm-toolchain/toolchain/prebuilts/ndk/r25/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/c++/v1

1.	<eof> parser at end of file
2.	Optimizer
 #0 0x00000000047d91d8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x47d91d8)
 #1 0x00000000047d8340 llvm::sys::RunSignalHandlers() (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x47d8340)
 #2 0x00000000047a3dc3 (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x47a3dc3)
 #3 0x00000000047a3fa1 (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x47a3fa1)
 #4 0x00007f0efe404f90 (/lib/x86_64-linux-gnu/libc.so.6+0x3bf90)
 #5 0x00000000065bec3e llvm::VPTransformState::get(llvm::VPValue*, llvm::VPIteration const&) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x65bec3e)
 #6 0x00000000065be8b9 llvm::InnerLoopVectorizer::scalarizeInstruction(llvm::Instruction*, llvm::VPReplicateRecipe*, llvm::VPIteration const&, bool, llvm::VPTransformState&) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x65be8b9)
 #7 0x00000000065be760 llvm::VPReplicateRecipe::execute(llvm::VPTransformState&) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x65be760)
 #8 0x00000000065be31e llvm::VPBasicBlock::execute(llvm::VPTransformState*) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x65be31e)
 #9 0x00000000065be047 llvm::VPRegionBlock::execute(llvm::VPTransformState*) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x65be047)
#10 0x00000000065bdf6c llvm::VPRegionBlock::execute(llvm::VPTransformState*) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x65bdf6c)
#11 0x00000000066fabf1 llvm::VPlan::execute(llvm::VPTransformState*) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x66fabf1)
#12 0x00000000062fd91e llvm::LoopVectorizationPlanner::executePlan(llvm::ElementCount, unsigned int, llvm::VPlan&, llvm::InnerLoopVectorizer&, llvm::DominatorTree*) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x62fd91e)
#13 0x000000000663a48f llvm::LoopVectorizePass::processLoop(llvm::Loop*) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x663a48f)
#14 0x0000000005edebea llvm::LoopVectorizePass::runImpl(llvm::Function&, llvm::ScalarEvolution&, llvm::LoopInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::BlockFrequencyInfo&, llvm::TargetLibraryInfo*, llvm::DemandedBits&, llvm::AAResults&, llvm::AssumptionCache&, std::__1::function<llvm::LoopAccessInfo const& (llvm::Loop&)>&, llvm::OptimizationRemarkEmitter&, llvm::ProfileSummaryInfo*) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x5edebea)
#15 0x0000000005eddbb9 llvm::LoopVectorizePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x5eddbb9)
#16 0x0000000005edd89b (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x5edd89b)
#17 0x0000000005c6168a llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function> >::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x5c6168a)
#18 0x0000000005c61521 clang::TemplateDeclInstantiator::VisitDecl(clang::Decl*) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x5c61521)
#19 0x0000000005ec7112 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x5ec7112)
#20 0x0000000005ec6dd1 (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x5ec6dd1)
#21 0x00000000063538c6 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x63538c6)
#22 0x00000000065d66c8 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, std::__1::unique_ptr<llvm::raw_pwrite_stream, std::__1::default_delete<llvm::raw_pwrite_stream> >) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x65d66c8)
#23 0x00000000060524d5 (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x60524d5)
#24 0x0000000005ea25a9 clang::ParseAST(clang::Sema&, bool, bool) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x5ea25a9)
#25 0x00000000063c128d clang::FrontendAction::Execute() (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x63c128d)
#26 0x00000000063c112d clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x63c112d)
#27 0x00000000063c1541 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x63c1541)
#28 0x00000000066a9f54 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x66a9f54)
#29 0x00000000066a6de3 (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x66a6de3)
#30 0x00000000066a6c92 (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x66a6c92)
#31 0x00000000066a6c61 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x66a6c61)
#32 0x00000000066a69f4 clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*, bool*) const (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x66a69f4)
#33 0x00000000066a685f clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&) const (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x66a685f)
#34 0x00000000066a66f2 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::__1::pair<int, clang::driver::Command const*> >&) (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x66a66f2)
#35 0x00000000066752ee main (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x66752ee)
#36 0x00007f0efe3f018a __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:74:3
#37 0x00007f0efe3f0245 call_init ./csu/../csu/libc-start.c:128:20
#38 0x00007f0efe3f0245 __libc_start_main ./csu/../csu/libc-start.c:368:5
#39 0x00000000064cce69 _start (/usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin/clang++.real+0x64cce69)
clang-14: error: clang frontend command failed with exit code 139 (use -v to see invocation)
Android (9352603, based on r450784d1) clang version 14.0.7 (https://android.googlesource.com/toolchain/llvm-project 4c603efb0cca074e9238af8b4106c30add4418f6)
Target: aarch64-unknown-linux-android31
Thread model: posix
InstalledDir: /usr/local/g/aosp-master-with-phones/prebuilts/clang/host/linux-x86/clang-r450784d1/bin
clang-14: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-14: note: diagnostic msg: /tmp/transform-196fd9.cpp
clang-14: note: diagnostic msg: /tmp/transform-196fd9.sh
clang-14: note: diagnostic msg: 

[DanAlbert]

Duplicate of #1862