Created attachment 641804 [details] [diff] [review] Patch For bug 771130, I need JM PICs to have a valid pc. Turns out there's already a field, it just has to be initialized. The patch also removes BaseIC::op and changes its users to call f.pc(). Any idea why this field was added? Since CALLELEM no longer has to push |this|, the stack store for that is also removed.