Reproducible builds are an edge case, that require determistic compilation for sure. But profile based optimisation or linker address randomisation are sometime

Reproducible builds are an edge case, that require determistic compilation for sure. But profile based optimisation or linker address randomisation are sometimes also useful. While rule out one thing for the other. Normally you can easily turn on and off optimisation depending on your need. Just do -O0 if you want determinism. But normally you should not rely on it (also at execution time)