Benchmarking GHC

From this I guess the answer is "-O2 -fvia-C"? I just wanted to check

Hi, I want to benchmark GHC vs some other Haskell compilers, what flags should I use? I just want whichever package of flags is "good optimisation" - nothing unsafe, nothing that changes strictness properties, and a set of flags that is generally applicable - but slow compilation is fine. As far as the user guide says: * At the moment, -O2 is unlikely to produce better code than -O. * When we want to go for broke, we tend to use -O2 -fvia-C this information is still current before I start giving anyone any benchmark numbers. (for reference I'm on Windows, x86 Pentium 4/Athlon, if that makes a difference) Thanks Neil