search for: removeregoperandsfromuselists

Hi, What kind of C/C++ high level code can generate a computed jump, such as: jmpq *%r14 or jmpq *(%r14,%rbx,8) ? I imagine that any calls (including virtual) would use something like 'call *%r14', and the above jumps are mostly from 'switch' statements. Is this correct? Anything else? Thank you, Dan

...a utility to clone a MachineBasicBlock in LLVM? I found utility to clone machineInstrs, but couldn’t find similar utility for MachineBasicBlock. So, I created a utility myself for cloning a MachineBasicBlock, but I am running into an issue when LLVM is trying to  destroy the use list for registers (RemoveRegOperandsFromUseLists--> RemoveRegOperandFromRegInfo()-->NextOp->getReg() – where nextOp seems like invalid but not NULL). Its hitting assert in one of the registers that is getting reused in the cloned block What I am trying to do is to use exact set of virtual registers in both the blocks. Will it cause any i...

...chineRegisterInfo::removeRegOperandFromUseList(llvm::MachineOperand*)") at assert.c:103 #5 0x0884e0e0 in llvm::MachineRegisterInfo::removeRegOperandFromUseList (this=0x931b0c8, MO=0x9329aac) at /work/llvm/trunk/llvm/lib/CodeGen/MachineRegisterInfo.cpp:162 #6 0x08823d7f in llvm::MachineInstr::RemoveRegOperandsFromUseLists (this=0x931b920, MRI=...) at /work/llvm/trunk/llvm/lib/CodeGen/MachineInstr.cpp:638 #7 0x087f7c64 in llvm::ilist_traits<llvm::MachineInstr>::removeNodeFromList (this=0x931b3b4, N=0x931b920) at /work/llvm/trunk/llvm/lib/CodeGen/MachineBasicBlock.cpp:115 #8 0x0856f3d8 in llvm::iplist<llvm:...