On Wed, Dec 30, 2009 at 08:50, pang long <hitpanglong@xxxxxxxxx> wrote: > How to dump trees of ssa in raw representation by gcc 4.4.1? The format for gimple raw dumps changed in version 4.4 (with the changes in the data structures used to represent gimple). You won't be able to get a raw dump in the same format as what was produced by earlier versions. Sorry. Diego.