[llvm-dev] Node emitted out of order - late

[Nagaraju Mekala via llvm-dev]

Hi All,

I am porting  an embedded 32bit RISC processor to LLVM-8.
I was able to compile few basic applications successfully  but for a
particular application I am seeing below error:

llvm-project/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp:317:
unsigned int llvm::InstrEmitter::getVR(llvm::SDValue,
llvm::DenseMap<llvm::SDValue, unsigned int>&): Assertion `I !=
VRBaseMap.end() && "Node emitted out of order - late"' failed

I tried debugging it and found that CopyToReg is trying to use virtual
register and somehow matching with "VRBaseMap.end()" as a result it is
crashing.

Can someone please help me out from this?
I am really struck on this.

Thanks in advance
Nagaraju