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I'm writing a compiler using LLVM, and suddenly today I started to get this error, when emitting to a .s file. Assertion failed: (I != M+Size && I->FromReg == RegNum && "Invalid RegNum"), function getLLVMRegNum, file MCRegisterInfo.cpp, line 78. I'm emitting using x86_64-apple-darwin. Any thoughts about what could be causing this? LLVM validation does not report any errors. Timothy -- “One of the main causes of the fall of th...

...ly instruction of the form Rd=Rm*Rs where Rd != Rm. > How can I add this requirement to the instruction definition? Unfortunately there is currently no great way to do this. Some options are: 1. Pin one operand to a specific register, one that isn't allocated (e.g. R12). Use copyto/fromreg to get to it. They other would be allocated to some different reg. 2. Allocate like normal, and then do a post-pass. The post-pass would scan for the bad instruction, and if found insert compensation code to copy in/out of some other reg (again, R12 would a natural choice). I'd l...

The ARM has a multiply instruction of the form Rd=Rm*Rs where Rd != Rm. How can I add this requirement to the instruction definition? Thanks, Rafael

Hi I come across the following exception when I use the llvm-dwarfdump -debug-info target_binary: llvm-dwarfdump: /home/linux/llvm-7/llvm/lib/MC/MCRegisterInfo.cpp:87: int llvm::MCRegisterInfo::getLLVMRegNum(unsigned int, bool) const: Assertion `I != M+Size && I->FromReg == RegNum && "Invalid RegNum"' failed. Stack dump: 0. Program arguments: /home/linux/llvm-7/llvm/build/bin/llvm-dwarfdump -debug-info C++/483.xalancbmk.O1 #0 0x000000000093ab37 llvm::sys::PrintStackTrace(llvm::raw_ostream&) /home/linux/llvm-7/llvm/lib/Support/Unix/Sig...

...following exception when I use the llvm-dwarfdump >> -debug-info target_binary: >> >> llvm-dwarfdump: /home/linux/llvm-7/llvm/lib/MC/MCRegisterInfo.cpp:87: int >> llvm::MCRegisterInfo::getLLVMRegNum(unsigned int, bool) const: Assertion `I >> != M+Size && I->FromReg == RegNum && "Invalid RegNum"' failed. >> Stack dump: >> 0. Program arguments: >> /home/linux/llvm-7/llvm/build/bin/llvm-dwarfdump -debug-info >> C++/483.xalancbmk.O1 >> #0 0x000000000093ab37 llvm::sys::PrintStackTrace(llvm::raw_ostream&)...

...-dwarfdump >>>> -debug-info target_binary: >>>> >>>> llvm-dwarfdump: /home/linux/llvm-7/llvm/lib/MC/MCRegisterInfo.cpp:87: >>>> int llvm::MCRegisterInfo::getLLVMRegNum(unsigned int, bool) const: >>>> Assertion `I != M+Size && I->FromReg == RegNum && "Invalid RegNum"' failed. >>>> Stack dump: >>>> 0. Program arguments: >>>> /home/linux/llvm-7/llvm/build/bin/llvm-dwarfdump -debug-info >>>> C++/483.xalancbmk.O1 >>>> #0 0x000000000093ab37 llvm::sys:...