Hi, I want to use profiling information. I know there're two relevent fields in each basic block, count and frequency. I want to use frequency because the compiled program is for another architecture so it cannot run on the host.
I use -fprofile-arcs. And I can see the frequency value when I debug cc1. But I happen to realize that when I add -fprofile-arcs, it change the the whole structure of basic block. I compared the vcg output files with and without the -fprofile-arcs. I found they're totally different. My question is why it is so? I want to know the profiling info, but if profiling info I get is for another different structure of basic block, it's useless to me. Where do I go wrong here? Which option is the suitable in this case? The gcc version is 3.3.3. Thanks. Regards, Timothy
