/// \brief A combiner-aware RAUW-like routine.
///
/// This method is to be used when an instruction is found to be dead,
- /// replacable with another preexisting expression. Here we add all uses of
+ /// replaceable with another preexisting expression. Here we add all uses of
/// I to the worklist, replace all uses of I with the new value, then return
/// I, so that the inst combiner will know that I was modified.
Instruction *ReplaceInstUsesWith(Instruction &I, Value *V) {