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Troubleshooting

General

Phi nodes

  • The phi node should be the first instruction of a block
  • Input blocks must be direct predecessor of the phi's block, but for input values it's more permissive.

Errors

  • llvm::LiveVariables::HandleVirtRegUse(unsigned int, llvm::MachineBasicBlock*, llvm::MachineInstr&) () from /usr/lib/x86_64-linux-gnu/libLLVM-8.so.1 => In a function, a variable from another function is used.
  • Program received signal SIGSEGV, Segmentation fault. 0x00007ffffbf573a2 in llvm::Function::getPersonalityFn() const () from /usr/lib/x86_64-linux-gnu/libLLVM-8.so.1 => A function tries to throw something but didn't declare throws attribute so the main function doesn't setup the personality function.