Assertion in IntegerType::get: `NumBits <= MAX_INT_BITS && "bitwidth too large"'

[ym-xie]

code:

typedef float __m128 __attribute__((__vector_size__(1 << 28), __may_alias__));
extern __m128 _mm_sub_ps(__m128 __A, __m128 __B);
extern __m128 _mm_mul_ps(__m128 __A, __m128 __B);
__m128 vq_nbest(const __m128 *codebook, __m128 d, __m128 in) {
  return _mm_sub_ps(d, _mm_mul_ps(in, *codebook++));
}

command:

timeout 30 clang -x c -std=c2x -c file.c -o /dev/null

clang version 19.1.6. The above code causes hang.

[shafik]

On assertions trunk it crashes: https://godbolt.org/z/4jxqqa43a

clang++: /root/llvm-project/llvm/lib/IR/Type.cpp:313:
static llvm::IntegerType* llvm::IntegerType::get(llvm::LLVMContext&, unsigned int):
Assertion `NumBits <= MAX_INT_BITS && "bitwidth too large"' failed.

Backtrace:

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: /opt/compiler-explorer/clang-assertions-trunk/bin/clang++ -gdwarf-4 -g -o /app/output.s -mllvm --x86-asm-syntax=intel -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics -x c -std=c2x -c <source>
1.	<eof> parser at end of file
2.	Code generation
3.	Running pass 'Function Pass Manager' on module '<source>'.
4.	Running pass 'X86 DAG->DAG Instruction Selection' on function '@vq_nbest'
 #0 0x0000000003c6c4a8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3c6c4a8)
 #1 0x0000000003c6a1b4 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3c6a1b4)
 #2 0x0000000003bb7718 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x0000776787442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007767874969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #5 0x0000776787442476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #6 0x00007767874287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #7 0x000077678742871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #8 0x0000776787439e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #9 0x000000000362e3c2 llvm::IntegerType::get(llvm::LLVMContext&, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x362e3c2)
#10 0x00000000032c6d09 llvm::EVT::getExtendedIntegerVT(llvm::LLVMContext&, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x32c6d09)
#11 0x0000000004daebfb (anonymous namespace)::DAGCombiner::TransformFPLoadStorePair(llvm::SDNode*) DAGCombiner.cpp:0:0
#12 0x0000000004e40cb1 (anonymous namespace)::DAGCombiner::visitSTORE(llvm::SDNode*) DAGCombiner.cpp:0:0
#13 0x0000000004e446a6 (anonymous namespace)::DAGCombiner::visit(llvm::SDNode*) DAGCombiner.cpp:0:0
#14 0x0000000004e46acc (anonymous namespace)::DAGCombiner::combine(llvm::SDNode*) DAGCombiner.cpp:0:0
#15 0x0000000004e483b8 (anonymous namespace)::DAGCombiner::Run(llvm::CombineLevel) DAGCombiner.cpp:0:0
#16 0x0000000004e4accb llvm::SelectionDAG::Combine(llvm::CombineLevel, llvm::AAResults*, llvm::CodeGenOptLevel) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4e4accb)
#17 0x0000000004f88618 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4f88618)
#18 0x0000000004f8c309 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4f8c309)
#19 0x0000000004f8d5b0 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4f8d5b0)
#20 0x0000000004f7df5f llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4f7df5f)
#21 0x0000000002fb95d9 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.0) MachineFunctionPass.cpp:0:0
#22 0x00000000035c234f llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x35c234f)
#23 0x00000000035c2701 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x35c2701)
#24 0x00000000035c2fa1 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x35c2fa1)
#25 0x0000000003f24372 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*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3f24372)
#26 0x00000000045fa91e clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x45fa91e)
#27 0x000000000660992c clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x660992c)
#28 0x00000000045facf8 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x45facf8)
#29 0x00000000048b43b9 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x48b43b9)
#30 0x0000000004836b7e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4836b7e)
#31 0x00000000049a12ae clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49a12ae)
#32 0x0000000000ce7f8f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xce7f8f)
#33 0x0000000000cdfa2a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#34 0x000000000463f219 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0
#35 0x0000000003bb7bc4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3bb7bc4)
#36 0x000000000463f80f clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0
#37 0x0000000004604a6d clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4604a6d)
#38 0x0000000004605b5d clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4605b5d)
#39 0x000000000460d0d5 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x460d0d5)
#40 0x0000000000ce4dd3 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xce4dd3)
#41 0x0000000000bb10a4 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xbb10a4)
#42 0x0000776787429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#43 0x0000776787429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#44 0x0000000000cdf4d5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xcdf4d5)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134

[llvmbot]

@llvm/issue-subscribers-backend-x86

Author: None (wxie7)

code: ```c typedef float __m128 __attribute__((__vector_size__(1 << 28), __may_alias__)); extern __m128 _mm_sub_ps(__m128 __A, __m128 __B); extern __m128 _mm_mul_ps(__m128 __A, __m128 __B); __m128 vq_nbest(const __m128 *codebook, __m128 d, __m128 in) { return _mm_sub_ps(d, _mm_mul_ps(in, *codebook++)); } ``` command: ```shell timeout 30 clang -x c -std=c2x -c file.c -o /dev/null ``` clang version 19.1.6. The above code causes hang.