Hi, I need to modify gcc so as to add customized Labels for instructions in an ELF binary after it is done optimizing the code and to then make it output a symbol for the labeled instruction so that I can view the label in the symbol table. For example, I need to label every load instruction in a function with a unique ID and to make that ID show up as a symbol in the symbol table along with the memory address of the load instruction corresponding to the ID. Even the slightest help is much appreciated. &> veej.