[LLVMdev] Crash in CreateShl() method

[Tim Northover]

> How could this crash be fixed?

What you've basically written is:
    %AI = alloca i32
    %Vresult = store i32 1, i32* %AI
    %res = shl i32 %Vresult, 1

The problem is that stores don't produce values that can be used
elsewhere (they have type "void"). If you want to shift a variable
like "AI" in LLVM you have to load it, do the shift and then store it
again.