PPU LLVM JIT Repository Early Testing

I suspect the issue occurs because I used the pext (part of the BMI2 instruction set) instruction to optimize handling of the PPU's CR register. It turns out this instruction is available only on Haswell microarchitecture and newer processors. In case you are using a processor with an older microarchitecture, this should cause a crash.

People who are seeing the crash, can you please let me know if you are using a CPU older than Haswell or not? If this is the case, I will make a solution for this over the weekend.