In general, no. Optimizations from a compiler can't do anything regular code gen isn't allowed to do. It's just they're more likely to do some things. So in pra

In general, no. Optimizations from a compiler can't do anything regular code gen isn't allowed to do. It's just they're more likely to do some things. So in practice disabling optimization (especially using pragmas or attributes for certain critical functions) can help, but it can't be considered truly reliable.