[X86] Using option -mno-sse2 causes ICE

[Luhaocong]

clang: /home/luhaocong/llvm-project-debug/llvm/lib/Target/X86/X86FloatingPoint.cpp:318: unsigned int getFPReg(const llvm::MachineOperand&): Assertion `Reg >= X86::FP0 && Reg <= X86::FP6 && "Expected FP register!"' failed.
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: /home/luhaocong/llvm-project-debug/build/bin/clang -O2 -S test.c -mno-sse2
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module 'test.c'.
4.      Running pass 'X86 FP Stackifier' on function '@main'
 #0 0x0000560a7cb8a666 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/luhaocong/llvm-project-debug/llvm/lib/Support/Unix/Signals.inc:565:0
 #1 0x0000560a7cb8a71d PrintStackTraceSignalHandler(void*) /home/luhaocong/llvm-project-debug/llvm/lib/Support/Unix/Signals.inc:632:0
 #2 0x0000560a7cb883cc llvm::sys::RunSignalHandlers() /home/luhaocong/llvm-project-debug/llvm/lib/Support/Signals.cpp:94:0
 #3 0x0000560a7cb89ec0 llvm::sys::CleanupOnSignal(unsigned long) /home/luhaocong/llvm-project-debug/llvm/lib/Support/Unix/Signals.inc:361:0
 #4 0x0000560a7caaaa3c (anonymous namespace)::CrashRecoveryContextImpl::HandleCrash(int, unsigned long) /home/luhaocong/llvm-project-debug/llvm/lib/Support/CrashRecoveryContext.cpp:76:0
 #5 0x0000560a7caaaf57 CrashRecoverySignalHandler(int) /home/luhaocong/llvm-project-debug/llvm/lib/Support/CrashRecoveryContext.cpp:390:0
 #6 0x00007f54dff59980 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x12980)
 #7 0x00007f54df051e87 raise /build/glibc-uZu3wS/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
 #8 0x00007f54df0537f1 abort /build/glibc-uZu3wS/glibc-2.27/stdlib/abort.c:81:0
 #9 0x00007f54df0433fa __assert_fail_base /build/glibc-uZu3wS/glibc-2.27/assert/assert.c:89:0
#10 0x00007f54df043472 (/lib/x86_64-linux-gnu/libc.so.6+0x30472)
#11 0x0000560a7ae357a4 getFPReg(llvm::MachineOperand const&) /home/luhaocong/llvm-project-debug/llvm/lib/Target/X86/X86FloatingPoint.cpp:318:0
#12 0x0000560a7ae395f8 (anonymous namespace)::FPS::handleSpecialFP(llvm::MachineInstrBundleIterator<llvm::MachineInstr, false>&) /home/luhaocong/llvm-project-debug/llvm/lib/Target/X86/X86FloatingPoint.cpp:1532:0
#13 0x0000560a7ae36236 (anonymous namespace)::FPS::processBasicBlock(llvm::MachineFunction&, llvm::MachineBasicBlock&) /home/luhaocong/llvm-project-debug/llvm/lib/Target/X86/X86FloatingPoint.cpp:460:0
#14 0x0000560a7ae35ac0 (anonymous namespace)::FPS::runOnMachineFunction(llvm::MachineFunction&) /home/luhaocong/llvm-project-debug/llvm/lib/Target/X86/X86FloatingPoint.cpp:375:0
#15 0x0000560a7b90ba79 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) /home/luhaocong/llvm-project-debug/llvm/lib/CodeGen/MachineFunctionPass.cpp:73:0
#16 0x0000560a7c072d22 llvm::FPPassManager::runOnFunction(llvm::Function&) /home/luhaocong/llvm-project-debug/llvm/lib/IR/LegacyPassManager.cpp:1434:0
#17 0x0000560a7c072fcb llvm::FPPassManager::runOnModule(llvm::Module&) /home/luhaocong/llvm-project-debug/llvm/lib/IR/LegacyPassManager.cpp:1480:0
#18 0x0000560a7c0733f3 (anonymous namespace)::MPPassManager::runOnModule(llvm::Module&) /home/luhaocong/llvm-project-debug/llvm/lib/IR/LegacyPassManager.cpp:1549:0
#19 0x0000560a7c06e415 llvm::legacy::PassManagerImpl::run(llvm::Module&) /home/luhaocong/llvm-project-debug/llvm/lib/IR/LegacyPassManager.cpp:539:0
#20 0x0000560a7c073c7d llvm::legacy::PassManager::run(llvm::Module&) /home/luhaocong/llvm-project-debug/llvm/lib/IR/LegacyPassManager.cpp:1677:0
#21 0x0000560a7d04742c (anonymous namespace)::EmitAssemblyHelper::RunCodegenPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile> >&) /home/luhaocong/llvm-project-debug/clang/lib/CodeGen/BackendUtil.cpp:1535:0
#22 0x0000560a7d047630 (anonymous namespace)::EmitAssemblyHelper::EmitAssembly(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) /home/luhaocong/llvm-project-debug/clang/lib/CodeGen/BackendUtil.cpp:1568:0
#23 0x0000560a7d0486c3 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream> >) /home/luhaocong/llvm-project-debug/clang/lib/CodeGen/BackendUtil.cpp:1729:0
#24 0x0000560a7e3f5196 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) /home/luhaocong/llvm-project-debug/clang/lib/CodeGen/CodeGenAction.cpp:370:0
#25 0x0000560a80075d8c clang::ParseAST(clang::Sema&, bool, bool) /home/luhaocong/llvm-project-debug/clang/lib/Parse/ParseAST.cpp:182:0
#26 0x0000560a7dad14f9 clang::ASTFrontendAction::ExecuteAction() /home/luhaocong/llvm-project-debug/clang/lib/Frontend/FrontendAction.cpp:1083:0
#27 0x0000560a7e3f180a clang::CodeGenAction::ExecuteAction() /home/luhaocong/llvm-project-debug/clang/lib/CodeGen/CodeGenAction.cpp:1107:0
#28 0x0000560a7dad0dc2 clang::FrontendAction::Execute() /home/luhaocong/llvm-project-debug/clang/lib/Frontend/FrontendAction.cpp:980:0
#29 0x0000560a7da09475 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) /home/luhaocong/llvm-project-debug/clang/lib/Frontend/CompilerInstance.cpp:1036:0
#30 0x0000560a7dc69b28 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) /home/luhaocong/llvm-project-debug/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:263:0
#31 0x0000560a7ad07a16 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) /home/luhaocong/llvm-project-debug/clang/tools/driver/cc1_main.cpp:248:0
#32 0x0000560a7acfbb35 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) /home/luhaocong/llvm-project-debug/clang/tools/driver/driver.cpp:317:0
#33 0x0000560a7d8d9289 clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool*) const::'lambda'()::operator()() const /home/luhaocong/llvm-project-debug/clang/lib/Driver/Job.cpp:407:0
#34 0x0000560a7d8d98aa void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool*) const::'lambda'()>(long) /home/luhaocong/llvm-project-debug/llvm/include/llvm/ADT/STLFunctionalExtras.h:46:0
#35 0x0000560a7ca9ff00 llvm::function_ref<void ()>::operator()() const /home/luhaocong/llvm-project-debug/llvm/include/llvm/ADT/STLFunctionalExtras.h:68:0
#36 0x0000560a7caab157 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) /home/luhaocong/llvm-project-debug/llvm/lib/Support/CrashRecoveryContext.cpp:426:0
#37 0x0000560a7d8d94a3 clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool*) const /home/luhaocong/llvm-project-debug/clang/lib/Driver/Job.cpp:407:0
#38 0x0000560a7d8841a2 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&) const /home/luhaocong/llvm-project-debug/clang/lib/Driver/Compilation.cpp:196:0
#39 0x0000560a7d88451e clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) const /home/luhaocong/llvm-project-debug/clang/lib/Driver/Compilation.cpp:249:0
#40 0x0000560a7d894408 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*> >&) /home/luhaocong/llvm-project-debug/clang/lib/Driver/Driver.cpp:1617:0
#41 0x0000560a7acfccc0 main /home/luhaocong/llvm-project-debug/clang/tools/driver/driver.cpp:489:0
#42 0x00007f54df034c87 __libc_start_main /build/glibc-uZu3wS/glibc-2.27/csu/../csu/libc-start.c:344:0
#43 0x0000560a7acfa2aa _start (/home/luhaocong/llvm-project-debug/build/bin/clang+0x2a662aa)
clang-14: error: clang frontend command failed with exit code 134 (use -v to see invocation)
clang version 15.0.0 ([email protected]:llvm/llvm-project.git 75acad41bcd6cbe688e0609cbd7649ea8a533195)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/luhaocong/llvm-project-debug/build/bin

The failed test case as follow:

// test.c
int main() {
  printf("%f\n", 999.99);
}

Build options:

cmake -DCMAKE_INSTALL_PREFIX=$RISCV -DCMAKE_BUILD_TYPE=Debug -DLLVM_OPTIMIZED_TABLEGEN=On -DLLVM_USE_LINKER=gold -DLLVM_ENABLE_PROJECTS="clang;lld;compiler-rt;" -DLLVM_ENABLE_ZLIB=Off -DLLVM_ENABLE_TERMINFO=Off -DLLVM_TARGETS_TO_BUILD="X86;RISCV;" ../llvm

What's more, this case can be compiled successfully with release version, but runs error results.

[llvmbot]

@llvm/issue-subscribers-backend-x86

[phoebewang]

This is a duplicate of bug #29774