On Thu, Jun 19, 2008 at 11:56 PM, Mohamed Shafi <shafitvm@gmail.com> wrote: > Can you tell me what was done in gcc 4.3 so that i can back port > the changes to gcc 4.1.2 It was a rewrite of life information of flow.c really. It is very hard to backport (trust me I have tried already). Thanks, Andrew Pinski