Actually, doing this very thing was what got me the largest salary increase in my 42-year career. I had been 16 months without any mention of my salary or a raise, so I took things into my own hands. I prepared a list of specific accomplishments and also the activities that I regularly performed at work, including the results that made things better. Scheduled a meeting with my boss, we sat down and I presented my data, then asked for a $6k per year raise. Boss looked over the list, and said there was no problem and he would handle it, which he did immediately. My wife and I had quite a celebration after that meeting.
One of the best days of my IT career was the day I told my boss if the problem was so simple he should go fix it himself.