llvm dev - Dec 2012 - [LLVMdev] profiling with 64b counters

Hi,

The profiler pass currently uses 'unsigned' (32b) counters. These 
counters are not large enough for some of the programs I am profiling. I 
want to re-write the profiling tools for 64b counters. How much of an 
effort will that be?

Thanks.
-Apala