search for: instr_ptr

I am writing an analysis pass on LLVM which requires to: [1] generate unique, positive ID corresponding to each instruction [2] the ID must survive across runs [3] given the ID, corresponding instruction has to be mapped back For [1], the general suggestion is to use the Value* instr_ptr associated to each instruction. The instr_ptr points to specific instruction in memory, hence unique. However, it does change at every run, thus violating [2]. I have a hacking workaround of getting the first instruction of 'main' method and computing the offset. The problem is, this gives...

...nt the counter but how'll I assign an > ID to an instruction. Because, I need these IDs during an > instrumentation phase. In other words, how will the instrumentation > phase know what ID has been assigned to a particular instruction? > Because, the instrumentation knows about the instr_ptr (memory address > of an instruction) which changes at every run. > > > > Two tactics come to mind. First, you can store the ID directly in the > instruction (adding a field to the class) when you assign the IDs. > > > > Is there any standard means to add an extra fiel...