Nava Whiteford <new@xxxxxxxxxxxxx> writes: > I'm trying to build my codebase on a AMD Opteron 2352, but I'm having > problems compiling under O2 and O3. Are there any know problems with > this processor under gcc 4.5.1? There are certainly code generation bugs in gcc, but not many. There are no known problems that are specific to that processor. The most common cause of a program which fails at -O2 with newer gcc is invalid aliasing in the program. Try using the -fno-strict-aliasing option. The second most common cause is invalid reliance on the behaviour of signed overflow. Try using the -fno-strict-overflow option. Ian
