Instantaneous Performance Bug Detection in IDE

We propose an instantaneous technique to detect performance bugs in the IDE. It tracks program changes in the background, detects performance bugs, and displays and invalidates bug warnings and fixes, all happening in a blink. We develop a novel change-aware static race perf-bug detection algorithm that leverages a change-aware on-the-fly points-to analysis to compute only change-related information instead of the whole program, which is significantly more efficient than state-of-the-art techniques without change-aware points-to analysis for performance bug detection.