Debugopt: Debugging fully optimized natively compiled programs using multistage instrumentation

To address the issue, we propose Debugopt, a framework for debugging fully optimized natively compiled programs using multistage instrumentation. At compile time, Debugopt generates unoptimized programs with accurate debugging information and optimized programs. At debugging time, Debugopt dynamically replaces the execution of optimized programs with unoptimized programs. Debugopt is implemented on multiple architectures, including x86-32, x86-64, armv7 and mips3. Debugopt's overhead is small during normal execution on a large range of benchmarks.