In practice I do not think this will work. There is already a queue of PRs waiting to be tested and merged. Most changes are not going to change the compiler p

In practice I do not think this will work. There is already a queue of PRs waiting to be tested and merged. Most changes are not going to change the compiler performance. Better to watch a trend line and revert any change that hurts performance in a significant way. Releases are every 6 weeks so there is plenty of time for this type of analysis and activity.