Anyone that can reliably and off-the-cuff do all of these can have complete control back: https://en.wikipedia.org/wiki/Category:Compiler_optimizations https:/

Anyone that can reliably and off-the-cuff do all of these can have complete control back: https://en.wikipedia.org/wiki/Category:Compiler_optimizations https://en.wikipedia.org/wiki/Category:Compiler_optimization... Otherwise we should trust compilers to know better.