Translations:GCC optimization/33/en

On x86 and x86-64 CPUs,  will generate code specifically for that CPU using all its available instruction sets and the correct ABI; it will have no backwards compatibility for older/different CPUs. If you don't need to execute code on anything other than the system you're running Gentoo on, continue to use. You should only consider using  when you need to generate code for older CPUs such as i386 and i486. produces more generic code than ; though it will tune code for a certain CPU, it doesn't take into account available instruction sets and ABI. Don't use  on x86 or x86-64 systems, as it is deprecated for those arches.