On Sep 28, 2006, at 4:26 AM, Jan Beulich wrote:
While I'm not certain whether gcc is able to split one function's code between different sections
Kinda, sorta... Hot-cold partitioning (-freorder-blocks-and- partition) does this. If one exposed a FE language construct to so tag code, then the hot-cold partitioner could make use of that information. Naturally, when complete, it would have to manage the debug information and the unwind information. As I recall, it might not be that complete yet.
I think exposing a language feature so that you can tell the compiler to so split code would be better than trying to do it behind the compiler's back.
If you profiled and tweaked and tuned, you might be able to get the compiler to partition the code for you, though, having that sticky in the source base so that everyone can just compile it, is well, a dream.
