GCC Profile base optimizations using simulator profile

[Hariharan]

Hi,
I just wanted to see if there are others out there who get profile 
information from a simulator and feed that information back for GCC's 
PBO, in the .gcda format.

I had tried this on picoChip, by changing the instrumentation code in 
GCC for fprofile-arcs and got edge profile working quite well (but GCC 
4.4 would not accept just edge profile). I have never attempted to try 
others (indirect call, value profile etc), but would like to know the 
results of anyone who might have tried.

Thanks.

Hari