Hello,
2010/7/8, JD Zheng entropy.zjd@gmail.com:
I don't quite get why A9 won't gain much by using hard float.
Because A9 benefits from `softfp` which it is compatible with `soft`. In theory, hard floating point (incompatible with soft*) should not be much of a win over softfp on A9 cores which much better structured pipeline.
Loïc and other have kindly start working on a wiki page that might be of interest for you too.
http://wiki.debian.org/ArmHardFloatPort
Best regards,